Comparison

Central Alert Repository vs StormNet

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Central Alert Repository

Access a real-time archive of nationwide emergency alerts, including severe weather warnings and official emergency messages. Stay informed about local threats and national crises with instant updates and a searchable history.

Highlights
  • Real-time emergency alert archive
  • Nationwide alert access
  • Severe weather warnings
  • Searchable alert history
  • Instant updates
  • User-friendly interface
Features
Read full description

Stay aware with Central Alert Repository, the real-time emergency alert archive by the Global Weather & EAS Society. Central Alert Repository is the ultimate real-time emergency alert archive, developed by the Global Weather & EAS Society. Stay ahead of emergencies with instant access to official alerts, severe weather warnings, and other emergency messages from across the nation. Whether tracking local threats or monitoring national crises, Central Alert Repository ensures you're always informed. With a user-friendly interface, searchable archives, and real-time updates, Central Alert Repository is your trusted source for staying prepared and aware.

About

StormNet

This app provides highly accurate severe weather forecasts using advanced radar and real-time data analysis. It predicts risks for lightning, hail, damaging winds, and tornadoes up to 14 days in advance.

Highlights
  • 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
Read full description

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

Screenshots

Central Alert Repository3 screens
StormNet4 screens

Verdict

The call

Central Alert Repository and StormNet both sit at 4.8 stars, but that hides the real split: 94% of Central Alert Repository's written reviews are positive against 82% of StormNet's. On price, rating, ratings volume and update cadence there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.8 for Central Alert Repository against 4.9 for StormNet. Both are backed by a comparable volume of ratings — 53 and 20 respectively. Written reviews are what separate them: 94% of Central Alert Repository's written reviews are positive against 82% of StormNet's.

UpkeepUpdate frequency

Central Alert Repository ships an update every 5 weeks, StormNet every 2 months. Both last shipped on October 24, 2026.

Scorecard1 real difference · 9 level
Central Alert Repository versus StormNet: the parameters behind the verdict, then further details
ParameterCentral Alert RepositoryStormNet
PriceFreeFree
Rating4.8 (53 ratings)4.9 (20 ratings) — better
Positive reviews93.8% of reviews — better81.8% of reviews
Number of ratings53 — better20
Update frequencyEvery 5 weeks — betterEvery 2 months
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.0 — better15.1
Further details — not scored
Size9 MB39 MB
Age rating4+4+
DeveloperGlobal Weather & EAS Society, LLCCloudnine Weather, Inc.

Customer experience

Central Alert Repository

All ratings53 ratings
Positive96.2%
Neutral1.9%
Negative1.9%
Written reviews32 reviews
Positive93.8%
Neutral3.1%
Negative3.1%

StormNet

All ratings18 ratings
Positive94.4%
Neutral5.6%
Negative0.0%
Written reviews11 reviews
Positive81.8%
Neutral18.2%
Negative0.0%

Bugs and requests

Central Alert Repository

Reported bugs

1 issue
  • Spammed with non-local alerts

Requested features

2 requests
  • Location filtering
  • Additional features and improvements

StormNet

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Central Alert Repository

No in-app purchases

None

StormNet

No in-app purchases

Questions

Is Central Alert Repository free?
Central Alert Repository is free to download, with no in-app purchases.
Is StormNet free?
StormNet is free to download, with no in-app purchases.
Which has better reviews, Central Alert Repository or StormNet?
StormNet is rated higher. Central Alert Repository averages 4.8 out of 5 from 53 ratings, while StormNet averages 4.9 from 20 ratings.
Do Central Alert Repository or StormNet have ads?
Neither Central Alert Repository nor StormNet shows ads.
Which is updated more often, Central Alert Repository or StormNet?
Central Alert Repository ships an update every 5 weeks, and StormNet every 2 months. Most recently, Central Alert Repository was updated on October 24, 2026 and StormNet on October 24, 2026.

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