RexWeather vs Storm Window

RexWeather is the most complete tornado and severe weather app on iOS. Whether you are chasing records, researching history, or watching the sky right now, everything you need is in one place. HISTORICAL TORNADO DATABASE 75 years of verified NOAA tornado records from 1950 to the present day, including current-year data from NOAA NCEI updated monthly. Search near any location with a customizable radius. Filter by date range and EF rating. Jump to famous outbreaks like the 2011 Super Outbreak with one tap. Tornado detail maps show real NOAA surveyed damage path polygons with per-segment EF intensity coloring when available, so you see exactly where each rating began and ended on the ground. TORNADO POTENTIAL SCORE A real-time 1-to-10 score showing how favorable atmospheric conditions are for tornado development at your location. It draws from active NWS warnings, NOAA SPC tornado probability outlooks, and GFS model data including CAPE, wind shear, 0-6km bulk shear, Lifted Index, and Convective Inhibition. Every factor is explained in plain language. When instability and shear are both elevated, the app warns you the atmosphere is loaded even before storms fire. LIVE NWS SEVERE WEATHER ALERTS Active National Weather Service alerts for your exact location appear on the home screen the moment they are issued. Purple for Particularly Dangerous Situation tornado warnings. Red for active tornado warnings. Amber for watches. Tap to read the full NWS text. SPC CONVECTIVE OUTLOOKS Day 1, Day 2, and Day 3 NOAA Storm Prediction Center outlook maps with categorical risk, tornado probability, wind, and hail layers. See your exact location risk and read the SPC forecaster discussion. WEATHER AND MORE Check weather and tornado risk for any city in the world, not just where you are. The app works fully offline with cached weather and tornado data when you need it. Customize your units, map style, and appearance. Canadian locations are fully supported with regional tornado potential scoring built in.

Storm Window helps you find safer outdoor windows when weather risk is changing. Instead of giving you another raw forecast, Storm Window turns hourly weather data into a clear outdoor risk timeline, highlighting when conditions look clear, marginal, stormy, or severe. Built for runners, cyclists, walkers, golfers, beach days, trail time, work crews, and anyone who plans around lightning, heat, wind, air quality, and rain. Core features: • Clear "go / wait" style outdoor risk guidance • 48-hour hourly risk strip, shown as bars or dots • Lightning-aware storm risk • Heat, air quality, wind, UV, rain, and snow context • National Weather Service alert awareness • Current-location planning, plus one saved place • Home Screen widgets and Apple Watch support • Built-in explanations of what's driving each hour's risk Storm Window Pro adds: • Multiple saved locations • Activity-specific risk profiles (runner, cyclist, golfer, and more) • Custom activity profiles • Personal heat and AQI sensitivity tuning • Full hourly detail on tap • Driest-stretch highlight within your safe window • Per-location widgets and complications Storm Window Pro+ adds: • Trips: pin an upcoming event and get its own safe-window forecast and alerts • "Should I Go?" activity-aware guidance • Forecast change reviews and 48-hour forecast summaries • Apple Intelligence-powered risk explanations on supported devices — all features work without it Storm Window uses deterministic risk rules for its core safety assessment. Pro+ guidance does not replace the underlying risk rating. Storm Window is forecast guidance, not a guarantee of safe conditions. Weather can change quickly. When thunder roars, go indoors. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/