Meteorology Tools

Browse all available meteorology tools.

Available tools

Advection Fog Sea Delta Checker Air dewpoint−sea temperature contact-cooling screen with explicit efficiency; fog/visibility not established without mixing trajectory and moisture evidence. Caller independently establishes matching units, evidence, method edition and applicability; output is not compliance, diagnosis, work-safety approval, geological identity or validated hazard prediction.
Ageostrophic Component Magnitude Difference measured and independently supplied geostrophic wind vectors, not scalar speed subtraction or computed pressure-gradient wind.
Air Mass Source Region Classifier Measured thermodynamic/moisture and independently trajectory-confirmed source-region evidence. Independently declared positive evidence requirements; overlapping/unknown classes retained. Caller independently establishes matching units, evidence, method edition and applicability; output is not compliance, diagnosis, work-safety approval, geological identity or validated hazard prediction.
Albedo Surface Type Table Lookup Observed same-spectrum/geometry surface albedo vs caller reference, not a universal static surface-type constant. Exact caller verified numeric reference; signed deviations retained. Caller independently establishes matching units, evidence, method edition and applicability; output is not compliance, diagnosis, work-safety approval, geological identity or validated hazard prediction.
Anomaly Correlation Height Field Compute uncentered area-weighted anomaly correlation relative to caller climate-normal height field; differs from Pearson centered correlation, matched area exposure required and zero anomaly norms undefined.
Bergeron Findeisen Ice Process Efficiency Lookup Observed same-temperature/cloud-liquid/ice supersaturation efficiency vs independently verified phase-process reference. Exact caller verified numeric reference; signed deviations retained. Caller independently establishes matching units, evidence, method edition and applicability; output is not compliance, diagnosis, work-safety approval, geological identity or validated hazard prediction.
Bias Score Frequency Hit Compute forecast/observed event frequency bias from explicit binary table; overforecast bias is not hit accuracy or probability calibration.
Bias Score Frequency Hit Practice Create reproducible practice for Bias Score Frequency Hit from supplied scenarios, returning validated questions and computed answers under the source tool's assumptions and limits.
Blocking High Omega Block Classifier Observed geopotential contour geometry and persistent flow evidence for caller omega-block classes, no identification from single pressure. Independently declared positive evidence requirements; overlapping/unknown classes retained. Caller independently establishes matching units, evidence, method edition and applicability; output is not compliance, diagnosis, work-safety approval, geological identity or validated hazard prediction.
Bora Katabatic Drainage Speed Evaluate inviscid uniform katabatic parcel acceleration over supplied slope distance/density proxy; no friction, entrainment, sustained Bora wind prediction or safety assessment.
Bulk Shear 0 To 6KM Interpolate observed 0/6000 m AGL wind endpoints before signed bulk shear difference; full layer coverage required, not average shear rate, surface-speed difference or a storm warning.
Cap Strength CIN Checker Audit maximum measured environmental-minus-parcel cap temperature excess and location against caller threshold; not integrated CIN or proof that convection cannot occur.
CAPE Convective Available Potential Energy Integrate positive portions of caller precomputed virtual parcel/environment buoyancy in observed height window, resolving each linear zero crossing; no hidden parcel lift, full sounding CAPE outside coverage or storm safety.
Ceilometer Cloud Layer Report Parser Parse strict operational cloud-layer subset (FEW/SCT/BKN/OVC/VV with known three-digit heights in hundreds of feet); CLR/SKC retain no observed ceiling, no full METAR/unknown-height inference or aviation minima/safe-flight assessment.
CIN Convective Inhibition Integrate only negative caller parcel virtual-buoyancy segments in bounded observed window, retaining signed CIN and magnitude; boundary choices/parcel lift are caller declared, not inferred complete sounding inhibition.
Climate Normals Anomaly Deviation Calculator Actual season/time-matched climate-normal signed deviations, not climate trend or anomaly attribution. Caller independently establishes matching units, evidence, method edition and applicability; output is not compliance, diagnosis, work-safety approval, geological identity or validated hazard prediction.
Cold Front Passing Temp Drop Rate Audit observed interval cooling rates over irregular hours while preserving warming sign; temperature change alone does not establish a cold-front passage or weather hazard.
Collision Coalescence Warm Rain Growth Integrate ideal spherical collector growth under constant relative fall speed, liquid content and efficiency, conserving gained liquid mass; no droplet spectrum, changing fall speed or rain onset prediction.
Contrail Persistence Temp Humidity Checker Audit ice-supersaturation/subzero observations against caller contrail persistence policy; supersaturation above 100% is retained, formation requires separate engine/Schmidt–Appleman conditions and persistence is not proven.
Cooling Degree Days Calculator Sum daily cooling degree days as max((high + low) / 2 − base, 0) without rounding daily means.
Cup Anemometer Calibration Constant Calibrate measured cup rotation rates to reference wind with explicit intercept/slope and extrapolation flag; not a universal instrument constant, gust response or certified sensor accuracy.
Cut Off Low Cold Pool Detachment Checker Independently traced closed/cutoff circulation and cold-pool detachment observations. Independently declared positive evidence requirements; overlapping/unknown classes retained. Caller independently establishes matching units, evidence, method edition and applicability; output is not compliance, diagnosis, work-safety approval, geological identity or validated hazard prediction.
Daily Clear Sky Insolation Estimate Calculator Integrate independently modeled same-day clear-sky irradiance trace, actual covered window only; no hidden solar geometry/cloud transmission model. Caller independently establishes matching units, evidence, method edition and applicability; output is not compliance, diagnosis, work-safety approval, geological identity or validated hazard prediction.
DCAPE Downdraft CAPE Calculator Integrate positive downward buoyancy g(TvEnv−TvDescended)/TvEnv over observed height window, resolving linear zero crossings; caller independently descends saturated downdraft parcel, not upward CAPE or full sounding. Caller independently establishes matching units, evidence, method edition and applicability; output is not compliance, diagnosis, work-safety approval, geological identity or validated hazard prediction.
Double Rainbow Secondary 51 Degree Compute stationary double internal-reflection spherical-drop rainbow ray under caller wavelength-specific refractive index; not a fixed 51 degree lookup or visible bow forecast.
Downwelling Longwave Clear Sky Parametrization Calculator Clear-sky calibrated emissivityσT⁴ downwelling model; caller independent same-band humidity calibration, not surface emitted flux or universal emissivity. Caller independently establishes matching units, evidence, method edition and applicability; output is not compliance, diagnosis, work-safety approval, geological identity or validated hazard prediction.
Dryline Mixing Ratio Gradient Checker Screen observed signed moisture gradients on caller measured planar transect distances; no coordinate distance computation or dryline identification from humidity gradient alone.
Effective Atmospheric Emissivity Lookup Observed/calibrated clear-sky same-band atmospheric emissivity vs explicit humidity/temperature reference. Exact caller verified numeric reference; signed deviations retained. Caller independently establishes matching units, evidence, method edition and applicability; output is not compliance, diagnosis, work-safety approval, geological identity or validated hazard prediction.
EL Equilibrium Level Locate first upper zero crossing terminating observed positive-buoyancy layer after caller LFC search boundary; retain unobserved EL/right-censored positive layer rather than extrapolating sounding top.
Ensemble Spread Error Consistency Checker Compare case-wise ensemble-mean RMSE with unbiased member variance under finite-M exchangeability factor sqrt(1+1/M); descriptive comparison, no reliability test/independence claim and perfect zero-error ratio undefined.
Equitable Threat Score ETS Compute observed binary ETS after marginal random-hit correction, retaining possible negative skill; unlike raw CSI or HSS, correct negatives change chance hits but not event union directly.
Equitable Threat Score ETS Practice Create reproducible practice for Equitable Threat Score ETS from supplied scenarios, returning validated questions and computed answers under the source tool's assumptions and limits.
Eyewall Replacement Cycle Duration Lookup Observed independently defined eyewall-cycle duration compared with caller matched storm-family reference, not predicted completion. Exact caller verified numeric reference; signed deviations retained. Caller independently establishes matching units, evidence, method edition and applicability; output is not compliance, diagnosis, work-safety approval, geological identity or validated hazard prediction.
False Alarm Ratio Precip Verification Compute observed false alarms/(hits+false alarms), not false-positive rate over observed nonevents; no-event forecasts leave ratio undefined.
False Alarm Ratio Precip Verification Practice Create reproducible practice for False Alarm Ratio Precip Verification from supplied scenarios, returning validated questions and computed answers under the source tool's assumptions and limits.
Foehn Chinook Warming Rate Model windward dry/saturated ascent then dry lee descent with supplied crest/LCL/lapse rates; explicit rainout/unsaturated descent idealization, not actual Chinook event or environmental profile fit.
Forecast Skill Heidke Score Compute binary Heidke skill against marginal chance agreement on explicit observed contingency counts; undefined degenerate chance is rejected, no independence confidence interval or operational forecast quality certification.
Forecast Skill Heidke Score Practice Create reproducible practice for Forecast Skill Heidke Score from supplied scenarios, returning validated questions and computed answers under the source tool's assumptions and limits.
Freezing Fog Rime Deposit Rate Lookup Observed freezing-fog rime accretion rate vs independently matched surface/wind/microphysical reference. Exact caller verified numeric reference; signed deviations retained. Caller independently establishes matching units, evidence, method edition and applicability; output is not compliance, diagnosis, work-safety approval, geological identity or validated hazard prediction.
Freezing Rain Depth Ice Load MM Account supplied liquid-equivalent freezing rain, collection/retention and ice density into equivalent uniform ice load/thickness; not radial wire growth, structural capacity or travel safety.
Fresh Snow Density Percent Table Lookup Qualified caller-reference registry: actual snow conditions, temperature/wind and independently measured density/liquid-ratio study. Requires independently applicable source/context/date evidence; not an authoritative table, omitted predictive model, diagnosis, permission, safety or compliance determination.
Frontal Slope Margules Formula Evaluate signed Margules temperature-weighted along-front geostrophic-wind slope under declared uniform two-air-mass convention; not frontal motion or an observed frontal elevation map.
Frontogenesis Function 2D Compute 2D adiabatic kinematic material growth of temperature-gradient magnitude from caller local velocity-gradient tensor; no vertical tilting/diabatic term, coordinates or front forecast.
Gradient Wind Curvature Correction Solve continuous geostrophic-limit normal branch of V²/(fR)+V=Vg with signed curvature, rejecting no-real anticyclonic balance; no anomalous branch, surface gusts or safe-flight inference.
Gradient Wind Curvature Correction Practice Create reproducible practice for Gradient Wind Curvature Correction from supplied scenarios, returning validated questions and computed answers under the source tool's assumptions and limits.
Green Flash Refraction Duration Seconds Convert independently measured spectral refraction separation and apparent solar descent to geometric limb-duration/exposure ratio; no atmospheric dispersion derivation, visible green-flash guarantee or safe-sun viewing advice.
Haboob Dust Wall Height Wind Lookup Caller verified event/site dust-wall height/wind notice, not live hazard or universal wall height. Exact independently verified location/jurisdiction/method/edition reference key, not a live database. Caller independently establishes matching units, evidence, method edition and applicability; output is not compliance, diagnosis, work-safety approval, geological identity or validated hazard prediction.
Hail Kinetic Energy Damage Proxy Sum spherical caller hail inventory kinetic energy per represented impact area; impact speeds are supplied, not terminal-speed lookup, and energy alone is not a damage, injury or safe-shelter prediction.
Hail Size Parameter Lookup Hail parameter/size conditional same-region independently verified observed calibration, not CAPE-only deterministic hail size prediction. Conditional independently matched piecewise-linear calibration, no extrapolation. Caller independently establishes matching units, evidence, method edition and applicability; output is not compliance, diagnosis, work-safety approval, geological identity or validated hazard prediction.
Halo 22 Degree Ice Crystal Checker Compare observed angular radius to ideal 60-degree hexagonal ice-prism minimum deviation under caller index/tolerance; angular agreement does not prove ice crystal habit, visible halo or sun-viewing safety.
Harmattan Dust Season Lookup Caller location/year independently verified dust-season notice, not current air quality. Exact independently verified location/jurisdiction/method/edition reference key, not a live database. Caller independently establishes matching units, evidence, method edition and applicability; output is not compliance, diagnosis, work-safety approval, geological identity or validated hazard prediction.
Heating Degree Days Calculator Sum daily heating degree days as max(base − (high + low) / 2, 0) without rounding daily means.
Holdridge Life Zone Classifier Actual independently established Holdridge biotemperature/precipitation log coordinates against caller same-triangle verified zones, PET/aridity transform/context externally established; no Köppen duplicate. Caller independently establishes matching units, evidence, method edition and applicability; output is not compliance, diagnosis, work-safety approval, geological identity or validated hazard prediction.
Isopleth Interpolation IDW Stations Tool Bounded planar IDW actual station values, exact collocated matches/conflicts preserved and stable scaled weights; no geodesy distance or physical isopleth guarantee. Caller independently establishes matching units, evidence, method edition and applicability; output is not compliance, diagnosis, work-safety approval, geological identity or validated hazard prediction.
K Index Severe Weather Calculate named K index from 850/700/500-hPa temperature and measured 850/700 dewpoints; input levels must match and no severe-weather probability/recommendation follows.
Koppen Climate Classification Code Lookup Caller verified Köppen edition/code meaning, not classifier inferred from code spelling. Exact independently verified location/jurisdiction/method/edition reference key, not a live database. Caller independently establishes matching units, evidence, method edition and applicability; output is not compliance, diagnosis, work-safety approval, geological identity or validated hazard prediction.
Land Breeze Onset Hour Estimate Calculator Qualified caller-reference registry: actual local timezone, coastline/land temperatures, season and independently calibrated onset-time study. Requires independently applicable source/context/date evidence; not an authoritative table, omitted predictive model, diagnosis, permission, safety or compliance determination.
Lenticular Standing Wave Cloud Lookup Independently verified wave-cloud reference, not evidence of safe aviation turbulence. Exact independently verified location/jurisdiction/method/edition reference key, not a live database. Caller independently establishes matching units, evidence, method edition and applicability; output is not compliance, diagnosis, work-safety approval, geological identity or validated hazard prediction.
LFC Level Free Convection Find first strict-positive buoyancy transition at/above caller LCL in supplied linear sounding, with left-censoring or explicit no-observed-LFC sentinel; touches without positive buoyancy are not free convection.
Lifted Index Difference measured environmental and caller independently lifted surface-parcel temperatures at 500 hPa; parcel lift is not computed and index alone does not classify storm occurrence.
Lightning Flash Density Per KM2 Year Lookup Actual deduplicated flash density over covered space/time and independent detection efficiency; strokes not substituted for flashes, no lightning forecast. Caller independently establishes matching units, evidence, method edition and applicability; output is not compliance, diagnosis, work-safety approval, geological identity or validated hazard prediction.
Lightning Leader Step Length Meters Audit resolved observed lightning-leader steps using high-speed frame times and measured local Cartesian positions; unresolved frames may combine steps, no universal step length, geodesy or lightning-distance safety inference.
Low Level Wind Shear Alert Threshold Checker Actual signed runway wind gains/losses against caller independently verified magnitude threshold, equality alerts; not live airport alert or aviation safety. Caller independently establishes matching units, evidence, method edition and applicability; output is not compliance, diagnosis, work-safety approval, geological identity or validated hazard prediction.
Mercurial Barometer Temperature Correction Calculator Mercury-barometer column reduction using independent mercury and scale expansion coefficients, same reference temperature; gravity/index corrections not included. Caller independently establishes matching units, evidence, method edition and applicability; output is not compliance, diagnosis, work-safety approval, geological identity or validated hazard prediction.
Microburst vs Macroburst Classifier Observed downburst footprint/duration/wind evidence against caller micro/macroburst classification, not storm safety. Independently declared positive evidence requirements; overlapping/unknown classes retained. Caller independently establishes matching units, evidence, method edition and applicability; output is not compliance, diagnosis, work-safety approval, geological identity or validated hazard prediction.
Monsoon Onset Date Threshold Lookup Audit caller monsoon-onset wet-run and following dry-break policy with fully observed confirmation window; incomplete future windows cannot confirm onset and no regional calendar is embedded.
Mountain Gap Flow Speed Lookup Qualified caller-reference registry: actual gap geometry, pressure gradient, stability and independently measured wind-speed study. Requires independently applicable source/context/date evidence; not an authoritative table, omitted predictive model, diagnosis, permission, safety or compliance determination.
Nakaya Crystal Habit Temperature Lookup Caller exact temperature/supersaturation/pressure crystal-habit reference, not temperature-only habit assignment. Exact independently verified location/jurisdiction/method/edition reference key, not a live database. Caller independently establishes matching units, evidence, method edition and applicability; output is not compliance, diagnosis, work-safety approval, geological identity or validated hazard prediction.
Net Radiation Budget Surface Balance Account measured down/up shortwave and longwave fluxes with declared downward-positive net convention and actual exposure; no inferred surface emissivity, sensible/latent partition or equilibrium temperature.
Occlusion Stage Life Cycle Lookup Independently verified frontal/occlusion stage reference, not assumed storm life cycle from one timestamp. Exact independently verified location/jurisdiction/method/edition reference key, not a live database. Caller independently establishes matching units, evidence, method edition and applicability; output is not compliance, diagnosis, work-safety approval, geological identity or validated hazard prediction.
Precipitable Water Column Integrate supplied specific humidity over increasing pressure in measured column with gravity/liquid density conversion; partial observed column remains partial and condensate or unsampled atmosphere is not inferred.
Pressure Tendency 3HR Change Calculate signed observed three-hour pressure tendency with bracketed piecewise-linear samples at report time; no unobserved extrapolation or synoptic symbol/weather inference.
Radius Max Wind Climatology Lookup Qualified caller-reference registry: actual cyclone basin/intensity/size definition and independently applicable radius-of-maximum-wind climatology. Requires independently applicable source/context/date evidence; not an authoritative table, omitted predictive model, diagnosis, permission, safety or compliance determination.
Rain Gauge Wind Undercatch Correction Percent Calculator Independent wind-catch calibrated correction observed/efficiency and percent relative to observed, not constant rain gauge bias or weather inference. Caller independently establishes matching units, evidence, method edition and applicability; output is not compliance, diagnosis, work-safety approval, geological identity or validated hazard prediction.
Rainbow Primary 42 Degree Angle Compute stationary single internal-reflection spherical-drop rainbow ray under caller wavelength-specific refractive index; not a fixed 42 degree lookup or visible bow forecast.
Rank Histogram Flatness Check Tool Audit supplied rank histogram versus uniform bins using descriptive Pearson statistic/end-bin excess; tie randomization and independent cases are caller responsibilities, no automatic significance or calibrated ensemble claim.
Record vs Normal Spread Z Checker Record deviation/independent matched normal SD; not tail probability for maxima or normality assumption. Caller independently establishes matching units, evidence, method edition and applicability; output is not compliance, diagnosis, work-safety approval, geological identity or validated hazard prediction.
Rime vs Clear Ice Accretion Type Checker Observed ice texture, liquid water/freezing evidence for rime/clear/mixed classes; ambiguity retained. Independently declared positive evidence requirements; overlapping/unknown classes retained. Caller independently establishes matching units, evidence, method edition and applicability; output is not compliance, diagnosis, work-safety approval, geological identity or validated hazard prediction.
Riming Degree Graupel Hail Split Checker Observed particle morphology/riming evidence against caller graupel/hail classes, no diameter-only species. Independently declared positive evidence requirements; overlapping/unknown classes retained. Caller independently establishes matching units, evidence, method edition and applicability; output is not compliance, diagnosis, work-safety approval, geological identity or validated hazard prediction.
Runway Prevailing Visibility Mile Converter Statute-mile visibility reporting distance to meters; does not convert prevailing visibility into runway visual range or authorize flight.
Saffir Simpson Category From Wind Lookup Saffir–Simpson1-minute wind category thresholds64/83/96/113/137knots, below hurricane threshold0; no surge/rain/total hazard. Caller independently establishes matching units, evidence, method edition and applicability; output is not compliance, diagnosis, work-safety approval, geological identity or validated hazard prediction.
Sea Breeze Front Inland Propagation Distance Integrate measured relative sea-breeze front speeds minus declared opposing background flow along fixed caller inland normal; signed retreat remains, no coast coordinates or propagation forecast.
Showalter Index Estimate Showalter 850-hPa-origin parcel index via explicit supplied LCL and caller piecewise dry/moist lapse approximation; differs from supplied surface-parcel lifted index, not a full pseudoadiabatic solver or validated thunder forecast.
Significant Tornado Parameter STP Calculator Explicit effective-layer CIN-bearing STP normalization1500/150/20 with shear 12.5cutoff/cap 1.5, LCL1000–2000 and CIN−50..−200factors; not fixed-layer variant or forecast. Caller independently establishes matching units, evidence, method edition and applicability; output is not compliance, diagnosis, work-safety approval, geological identity or validated hazard prediction.
Snow To Liquid Ratio Climatological Lookup Observed independently melted snowfall water ratio against caller same-region/month measurement reference; no snow amount forecast. Exact caller verified numeric reference; signed deviations retained. Caller independently establishes matching units, evidence, method edition and applicability; output is not compliance, diagnosis, work-safety approval, geological identity or validated hazard prediction.
Solar Declination Hour Angle Calculator Sinusoidal day-of-year solar declination with geometric altitude hour angle; unattainable flagged, no ephemeris/refraction/rise-time guarantee.
Sprite Blue Jet Altitude Range Lookup Observed sprite/blue-jet altitude vs caller independently verified event/method range reference. Exact caller verified numeric reference; signed deviations retained. Caller independently establishes matching units, evidence, method edition and applicability; output is not compliance, diagnosis, work-safety approval, geological identity or validated hazard prediction.
Station Model Wind Barb Speed Decoder Decode independently observed conventional 50/10/5knot symbols; no wind direction, OCR or different unit convention inferred. Caller independently establishes matching units, evidence, method edition and applicability; output is not compliance, diagnosis, work-safety approval, geological identity or validated hazard prediction.
Steam Fog Evaporation Mixing Checker Observed warm-water/cold-air moisture/mixing evidence, no saturation/visibility inferred from temperature alone. Independently declared positive evidence requirements; overlapping/unknown classes retained. Caller independently establishes matching units, evidence, method edition and applicability; output is not compliance, diagnosis, work-safety approval, geological identity or validated hazard prediction.
Storm Relative Helicity SRH Integrate signed storm-relative hodograph helicity over bounded observed layer using piecewise-linear winds and supplied storm motion; clockwise turns use positive conventional SRH, not tornado probability.
Sun Dog Parhelia Offset Angle Calculator Minimum-deviation geometric offset through a 60-degree ice prism, ideal horizontal ray branch; not a full solar-altitude parhelion model.
Supercell Composite Parameter Calculator Named effective-layer SCP:MUCAPE/1000×ESRH/50×shearFactor(0below10m/s, min(s,20)/20); independently sounding-derived terms, no tornado occurrence/probability. Caller independently establishes matching units, evidence, method edition and applicability; output is not compliance, diagnosis, work-safety approval, geological identity or validated hazard prediction.
SWEAT Index Severe Evaluate named SWEAT with dewpoint/total-totals truncation and conventional direction/speed gates on shear term, explicit knots/wind-from degrees; not a calibrated warning or severe-weather probability.
Threat Score Critical Success Index Compute observed threat/critical-success score on event-union cases, deliberately excluding correct negatives; no no-event division or precipitation probabilistic verification.
Threat Score Critical Success Index Practice Create reproducible practice for Threat Score Critical Success Index from supplied scenarios, returning validated questions and computed answers under the source tool's assumptions and limits.
Thunder Delay 3 Second KM Rule Converter Explicit rough 3 seconds/km thunder-distance heuristic; ignores temperature/light travel and is not lightning safety guidance.
Total Totals Index Resolve named vertical/cross/total totals from fixed 850/500-hPa observations; unlike K index, no 700-hPa moisture layer and no storm occurrence/safety classification.
Total Totals Index Practice Create reproducible practice for Total Totals Index from supplied scenarios, returning validated questions and computed answers under the source tool's assumptions and limits.
Trade Wind Inversion Base Height Lookup Identify measured contiguous inversion layers at caller lapse threshold and report observed base/top brackets; no climatological trade-wind lookup or inference of inversion between unresolved samples.
Tropical Depression vs Storm Wind Classifier Named34/64knot tropical wind stage screen, caller independently verifies tropical cyclone identity and agency averaging period; hurricane-force wind not inferred hurricane identity. Caller independently establishes matching units, evidence, method edition and applicability; output is not compliance, diagnosis, work-safety approval, geological identity or validated hazard prediction.
Upslope Fog LCL Height Checker Actual along-parcel upslope lift versus independently same-parcel LCL, not temperature-depression LCL formula renamed or observed fog certainty. Caller independently establishes matching units, evidence, method edition and applicability; output is not compliance, diagnosis, work-safety approval, geological identity or validated hazard prediction.
Valley Nocturnal Jet Time Calculator Qualified caller-reference registry: actual valley geometry, cooling/stability, season/timezone and independently evaluated nocturnal jet timing. Requires independently applicable source/context/date evidence; not an authoritative table, omitted predictive model, diagnosis, permission, safety or compliance determination.
Virga Shaft Evaporation Height Lookup Observed virga evaporation height vs independently matched humidity/profile reference, not rainfall-at-ground forecast. Exact caller verified numeric reference; signed deviations retained. Caller independently establishes matching units, evidence, method edition and applicability; output is not compliance, diagnosis, work-safety approval, geological identity or validated hazard prediction.
Warm Front Overrunning Precip Type Lookup Independently matched atmospheric wet-bulb profile/front reference for overrunning precipitation type, no automatic phase from surface temperature. Exact independently verified location/jurisdiction/method/edition reference key, not a live database. Caller independently establishes matching units, evidence, method edition and applicability; output is not compliance, diagnosis, work-safety approval, geological identity or validated hazard prediction.
Zonal Index Circulation Strength Calculator Observed caller same-level/latitude zonal flow ring average with independent arc weights and explicit east-positive wind convention; not meridional pressure difference or blocking forecast. Caller independently establishes matching units, evidence, method edition and applicability; output is not compliance, diagnosis, work-safety approval, geological identity or validated hazard prediction.