# StormNet — Severe Weather Forecast, Radar > Accurate severe weather forecasts with real-time radar and 14-day predictions. (iPhone/iPad app by Cloudnine Weather LLC.) - Source: https://appshunter.io/ios/app/stormnet/id6760000154 (this page in markdown: same URL + `.md`) - Developer: [Cloudnine Weather LLC](https://appshunter.io/developer/487445927) - Category: Weather, Travel - Price: Free - Rating: 4.90/5 from 18 App Store ratings · 11 written reviews indexed - Age rating: 4+ - Requires: iOS 15.1 · 39 MB - Languages: American English - Released: 2026-03-12 - Data updated: 2026-09-06 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/stormnet/id6760000154/reviews.md ## What is StormNet? StormNet is optimized to provide the most accurate severe weather forecast with NEXRAD, Super-Res Radar. StormNet is completely free, with no ads. Trained on decades of severe weather events, StormNet analyzes high-resolution radar, satellites, ground-based sensors, and weather forecast models in real-time to find complex patterns that lead to severe weather. The model updates every 2 minutes to provide 14-day forecasts for lightning, hail, damaging thunderstorm winds, and tornadoes. Super-Res Radar is the highest-resolution NEXRAD radar data available from 159 stations across the continental United States. Each radar station updates every 3-4 minutes and measures the intensity of precipitation based on how much energy the radar signal receives back from objects in the atmosphere. Combined, StormNet + Super-Res Radar provides a first-of-its-kind, multiple-component severe weather forecast system for the United States. StormNet Map Overlays • Radar: The highest-resolution radar available for the United States from each radar station. • Radar + Risk: NEXRAD radar, alongside StormNet risk probabilities, for the next 4 hours. • Risk Forecast: The StormNet risk probabilities from real-time to 14 days into the future. StormNet Risk Forecasts • Lightning • Hail • Damaging Winds • Tornado Super-Res (NEXRAD) Radar • Radar Reflectivity • Radar Velocity • Spectrum Width National Weather Service Warnings • Tornado • Severe Thunderstorm • Snow Squall • Flash Flood StormNet vs. National Weather Service The National Weather Service, the Storm Prediction Center, and other government agencies are the official sources for watches, warnings, and severe weather information. StormNet should serve as a trusted and automated guide for severe weather risk, but StormNet should not be treated as an official source. StormNet vs. Traditional Weather Models Existing weather forecast models are incredible feats of engineering and predict the ingredients for severe weather, but they are not designed to excel at severe weather forecasting and are not real-time tools. StormNet was trained and optimized to provide severe weather forecasts. StormNet vs. Other Weather Apps Existing weather apps and companies usually pass along official government watches and warnings, and often communicate if lightning or hail is already close by. While these are valuable features, we are not aware of another weather app or company that matches StormNet’s ability to provide real-time updates for lightning, hail, damaging thunderstorm winds, and tornado risk. Powered by OpenSnow In 2011, OpenSnow began predicting snowfall for skiers and snowboarders. OpenSnow has since become a global leader in mountain weather forecasts and expanded to provide forecasts for every type of outdoor activity. Since lightning is a risk to outdoor activities, especially on longer mountain-based adventures, OpenSnow created a weather forecast system that would provide both lightning forecasts to support real-time decisions and multi-day outlooks to support trip planning. Meteorologist Andrew Brady built StormNet to predict the risk of severe weather. OpenSnow acquired his technology in 2024 to help people stay safe and enjoy the outdoors. — Terms & Conditions — StormNet is free and available in the United States. We'll never track you, sell ads, or collect data. We only ask for your location to show the most accurate radar and severe weather forecast. Full terms and conditions can be found here: https://support.opensnow.com/legal/terms | https://support.opensnow.com/legal/privacy ## Key features - NEXRAD Super-Res Radar - 14-day severe weather forecasts - Lightning, hail, wind, tornado risk prediction - Real-time data analysis - Radar overlays (reflectivity, velocity) - National Weather Service warnings ## Recent user reviews (10 of 11) All indexed reviews: https://appshunter.io/ios/app/stormnet/id6760000154/reviews.md ### 5/5 — Great app for severe weather *2026-07-24* Radar, lightning forecasts, tornado forecasts, this app has it all and more. ### 5/5 — Improved *2026-07-03* App was having an issue with lagging behind real time. Developers responded to my comments and addressed the issue. Now it’s a 5 star app. Thank you. ### 5/5 — Rodeo *2026-07-02* So far I like this weather radar I like that it has auto radar hope it plays snow on it this winter it gonna be my go to app so keep up date it good work ### 3/5 — Issue that EVERYONE is having *2026-06-16* Keeps refreshing on its own. Really annoying, but good app **Developer response:** Hello again, can you send an email to storm@opensnow.com and let us know the exact details? The radar and risk overlays will always refresh with the most recent data, so this behavior is expected. Let us know if it is something other than this. If the issue is fixed, can you update your review to 5 stars or delete this review? ### 3/5 — Hello *2026-05-07* No está disponible el radar de Puerto Rico 🇵🇷 ya la temporada de huracanes comienza el 1 de junio 2026 ### 5/5 — StormNet is Great! *2026-04-18* Great app! Hope y’all can update it more and make it even better than it already is! -Ethan **Developer response:** Thank you so much for your support and review! ### 5/5 — Overall nice simple weather app *2026-03-26* The app is very simple and user friendly which is great. There are plenty of features that can be added in future updates but one key improvement would be adding radar opacity controls and county overlays to make the app more visually appealing. **Developer response:** Thank you so much for your support and review! ### 5/5 — StormNet *2026-03-14* This is a game changer. One of a kind app!! Absolutely awesome!!!! **Developer response:** Thank you so much for your support and review! ### 5/5 — Best Radar & Lightning App *2026-03-13* Quick setup and easy to use. Love that the radar auto-selects to the location of where you are on the screen. No other weather app does lightning risk and strike data well and I think this app solves it. Great work. **Developer response:** Thank you so much for your support and review! ### 5/5 — Severe Weather Forecasts *2026-03-13* My new go-to source for radar and knowing if severe weather is heading for my area. I already love OpenSnow for mountain and daily weather, so it’s awesome to see them expanding into new verticals. **Developer response:** Thank you so much for your support and review! ## Frequently asked questions about StormNet ### What is StormNet? StormNet is a weather application designed to provide the most accurate severe weather forecasts. It analyzes high-resolution radar, satellites, ground sensors, and weather models in real-time to identify patterns leading to severe weather events. ### Does StormNet have ads? No, StormNet is completely free and does not contain any advertisements. Users can enjoy an uninterrupted experience while accessing severe weather information. ### What types of severe weather does StormNet forecast? StormNet forecasts risks for lightning, hail, damaging thunderstorm winds, and tornadoes. These predictions are updated every 2 minutes and extend up to 14 days into the future. ### How accurate is StormNet's radar data? StormNet utilizes Super-Res Radar, which is the highest-resolution NEXRAD radar data available from 159 stations across the continental United States. Each radar station updates every 3-4 minutes. ### Is StormNet an official source for weather warnings? While StormNet provides a trusted and automated guide for severe weather risk, it should not be treated as an official source. The National Weather Service and other government agencies are the official sources for watches and warnings. ### What devices does StormNet support? StormNet is available for iPhone, iPad, and iPod. It is designed to provide its advanced weather forecasting capabilities across these Apple devices. ### How often is StormNet updated? The app's model updates every 2 minutes to provide the latest severe weather forecasts. The application itself was last updated on March 13, 2026, with version 1.0.0. ### What is the age rating for StormNet? StormNet has an age rating of 4+, making it suitable for a wide range of users. This indicates that the content is generally appropriate for young children. ## Version history (last 2 releases) ### 1.1.0 — 2026-05-21 Thanks for using StormNet! This update includes improvements to location tracking allowing the app to follow your location during travel. Also, if you enjoy the app, please leave a 5-star review in the App Store. It helps a ton! ### 1.0.0 — 2026-03-13 No release notes. ## More apps by Cloudnine Weather LLC - [OpenSnow](https://appshunter.io/ios/app/opensnow/id780890907) - [OpenSummit](https://appshunter.io/ios/app/opensummit/id1145887342) All apps by Cloudnine Weather LLC: https://appshunter.io/developer/487445927 ## Related topics [stormnet](https://appshunter.io/ios/topics/stormnet) · [warning thunderstorm](https://appshunter.io/ios/topics/warning-thunderstorm) · [thundercloud](https://appshunter.io/ios/topics/thundercloud) --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-06.*