Flash Weather: Future Radar

Flash Weather: Future Radar

Lightning Prediction & Alerts

105 ratings
48 reviews
#155 in top-grossing Weather
🌟 Lifestyle
☀️ Weather
Free
In-App Purchases

Details

Released
October 4, 2023
Updated
October 29, 2026

Features

Background Location Access

Flash Weather: Future Radar screenshot #1 for iPhone
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Flash Weather: Future Radar screenshot #5 for iPhone
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Flash Weather: Future Radar screenshot #8 for iPhone
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About

This app uses advanced algorithms and deep learning to predict lightning strikes before they happen. It provides real-time and future radar, smart push notifications, and heat stress forecasting for outdoor safety. Get hourly and 7-day forecasts for temperature, precipitation, and more.

✓Predictive lightning alerts
✓Live Activities on Lock Screen
✓Future radar up to 18 hours
✓Smart push notifications
✓Heat and WBGT forecasting
✓7-day hourly and daily forecasts
Show original description
+2

What's New in Flash Weather

1.5.251

October 29, 2026

Bug Fix - Daily highs and lows now show correctly through the daylight saving time change New Features - Notification Center: A redesigned, easier notification settings screen. Users can set their own alert levels, customizable thresholds for variables like UV or rainfall, get updates for today and tomorrow, get smoke and air quality alerts and NWS warnings, and choose their units. Can be set for all, none, or some of your locations. - Global forecast maps: Edge forecast maps for wind, gusts, temperature, rain, snow and ice cover the whole globe - Flash in 6 languages: English, Spanish, Portuguese (Brazil), Vietnamese, Tagalog and Simplified Chinese. Each user's chosen language also sets the language of their alerts, and Spanish alerts use the National Weather Service's official Spanish wording. - Severe storm risk alerts: Premium alerts when a saved location is at risk of severe storms or excessive rain ("level 3 out of 5"), checked against our own local forecast. - Lightning alerts across the Pacific: GOES-West satellite detection extends lightning alerts to Hawaii, the Aleutians, Fiji and Samoa. - Performance Improvements - All clear levels: Organizations choose Balanced, Extended or Safety all clear timing, with one default for the whole org. - Safer Live Activities: Live Activities show the same forecast-based status as the app's lightning card, and never show low risk when data is missing or stale. - Clearer alerts: Alert titles lead with FLASH (for example, "FLASH Fog Advisory"), forecast wording for smoke, air quality, heat and daily highs and lows is clearer and consistent, and hourly forecasts now include air quality. - Holds up during outages: The app handles backend hiccups gracefully instead of showing wrong data or dropping premium access. - AI-powered corrections: Machine-learning corrections for temperature, rain chances and precipitation type (rain, snow or ice), checked against real weather station observations. Each one switches on only where it proves more accurate than the base model, and switches itself off if it ever slips. - Better snow totals: Snowfall totals with low, likely and high ranges out to 7.5 days, no longer cut short by the rain forecast, and no more snow shown in above-freezing temperatures. Built for snow removal contractors, schools and facilities - Better ice forecasts: AI-corrected freezing rain amounts for the Gulf Coast and Midwest over the next 2 days, ice accumulation estimates out to 7.5 days, and better rain/snow/ice calls across the US. - Truer thunderstorm chances: The daily thunderstorm chance reflects the real odds of thunder that day, and thunder, rain chances and weather icons always agree. - Faster updates: Each forecast update reaches customers sooner. Bug Fixes - Extended range no longer shows 87 mph gusts or flat highs and lows - Rain and snow totals no longer drop from one hour to the next - Heat index uses the full NWS formula, and the day/night flag is no longer an hour off - Notifications: no more false hottest day of the year, odd vs yesterday trends, cloud icons on clearing skies, sunset heat alerts or duplicate digests - Lightning go/no-go no longer sticks after all clear, and the widget and app agree - Paying iOS customers no longer see Validation failed, and the backend going down no longer revokes premium

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Subscriptions & In-App Purchases

Flash Premium Yearly

Yearly subscription that gives all of FLASH's features

$39.991 Year
7 Days trial
How to cancel Flash Weather subscription ⁉️

Charts

Top Grossing

📈 155+11

Weather

This app rose +11 positions in Weather chart.

Last updated on November 3, 2026.

User reviews

Incredible accuracy

There’s not an app that is as accurate as Flash Weather… I have tracked severe weather using multiple apps to compare accuracy and Flash wins every time!

Dog thunder flight risk

Highly recommend. Been super useful to get alerts when lightning and thunder are close by. We have a dog that is terrified of thunder and jumps the fence. Now we can prepare and lock her in the house.

Pay for too much

Tried this app when first came out. Had issues, something’s changed. But way too many features are free on well known free apps. Paying for lightning alerts-nope, the metrics (showing humidity, uv, etc) never appears).
Will stick with major names and forget all this AI BS.

Great app IF you pay.

Great lightning app and interface, but basic things like more than one location notification requires a subscription so I’ve moved to other apps.

Issues

This app was recommended to me with the caveat that it doesn’t always load quickly or at all. After a few days I would agree. I’m in the middle of a storm and the lightening feature won’t load. Seems decent but only if it works which appears to be about half the time. Certainly not worth the price they charge
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Response from developer

Hi Rule, thanks for the feedback and sorry the lightning feature let you down when you needed it most. That's not the experience we want, especially during a storm. Mind emailing support@flashweather.ai with your device and any screenshots you're able to share? We'd like to look into what's causing the load issue.

FAQ

What is Flash Weather's lightning prediction technology?

Flash Weather utilizes a patented algorithm infused with deep learning to forecast lightning strikes before they occur. This technology aims to provide users with advance notice to seek shelter.

How accurate is Flash Weather's lightning prediction?

The app's description highlights a 'patented algorithm infused with Deep Learning' for lightning prediction. Specific accuracy percentages are not provided, but the features like 'FirstStrike' and 'All Clear' suggest a focus on actionable timing.

Does Flash Weather have ads?

No, Flash Weather does not contain advertisements. The app is free to download and offers an optional premium subscription for advanced features.

What are the subscription options for Flash Weather?

Flash Weather offers a 7-day free trial for its Premium subscription. After the trial, it costs $3.99 per month or $39.99 per year for access to all features.

Can I track storms on my iPhone lock screen with Flash Weather?

Yes, Flash Weather supports Live Activities, allowing you to track storms directly from your Lock Screen on compatible devices.

How often does the future radar update in Flash Weather?

The future radar in Flash Weather updates hourly and provides an 18-hour outlook in 15-minute increments. Lightning Probability maps update every 2 minutes.

What is WBGT forecasting in Flash Weather?

WBGT (Wet Bulb Globe Temperature) forecasting in Flash Weather provides real-time readings and a 7-day outlook for heat stress. This is crucial for planning outdoor activities safely by indicating heat risk levels.

What devices is Flash Weather available on?

Flash Weather is available on iPhone, iPad, and iPod devices. It is rated for users aged 4 and up.