StormThreat: Severe Weather

Severe thunderstorms, damaging winds, large hail, and tornadoes can disrupt your day. StormThreat makes it easier to see where severe weather is possible, follow developing conditions, and plan ahead.

Whether you're heading outdoors, traveling, preparing for severe weather, or just keeping an eye on the sky, StormThreat brings severe weather outlooks, watches, and storm reports together on one easy-to-use map.

KNOW WHAT TO EXPECT TODAY

See where thunderstorms and severe weather may develop with color-coded Convective Outlooks from the Storm Prediction Center (SPC).

• View severe weather risk areas from Marginal through High
• Explore tornado, damaging wind, and hail probabilities
• Examine Conditional Intensity Groups (CIG 1–3), highlighting the potential for particularly intense severe weather
• Read forecast details and discussions
• Zoom in to examine areas that matter to you

StormThreat presents complex weather information in a format that's useful whether you're a meteorologist or simply wondering what the afternoon might bring.

FOLLOW DEVELOPING WEATHER

As conditions change, stay informed with additional weather products:

• Tornado Watches
• Severe Thunderstorm Watches
• Particularly Dangerous Situation (PDS) Watches
• Mesoscale Discussions
• Local Storm Reports

See where watches are in effect, read discussions about developing conditions, and examine reports of tornadoes, large hail, and damaging winds.

LOOK BEYOND TODAY WITH STORMTHREAT PRO

Severe weather planning doesn't always begin on the day storms arrive.

StormThreat Pro gives you access to more forecasting information, helping you follow potential threats several days in advance.

PLAN AHEAD

View Convective Outlooks for Day 2, Day 3, and Days 4–8. See where severe weather may become a concern tomorrow, this weekend, or later in the week.

UNDERSTAND DEVELOPING THREATS

Access SPC Mesoscale Discussions for additional insight into changing conditions, developing thunderstorms, and the potential for severe weather watches.

EXPLORE THE PAST

Browse historical outlooks and storm reports dating back to 1987. Revisit significant severe weather events, examine past forecasts, and explore decades of weather history.

WEAR OS: WATCH APP, TILE, AND COMPLICATION

See your location's SPC risk on your watch. Swipe to the StormThreat tile, or add the "SPC outlook" complication to your watch face for your risk at a glance.

START FREE.

StormThreat Free includes:

• Current Day 1 Convective Outlook
• Active tornado and severe thunderstorm watches
• Local Storm Reports
• Recent historical outlooks

StormThreat Pro adds:

• Day 2 through Day 8 Convective Outlooks
• Mesoscale Discussions
• Full archive back to 1987
• Wear OS watch app, tile, and complication

Pro features require a paid subscription.

SEVERE WEATHER INFORMATION, WITHOUT THE CLUTTER

StormThreat is designed to make weather information convenient to access and easy to explore.

• Interactive, zoomable maps
• Street, satellite, and hybrid backgrounds
• County and state boundaries
• Weather forecast office boundaries
• Color-coded outlooks and probability areas
• Detailed weather information and discussions

Whether you're a storm spotter, storm chaser, meteorologist, emergency manager, weather enthusiast, or simply someone interested in severe weather, StormThreat puts important information within easy reach.

DATA SOURCES

Storm Prediction Center:
https://www.spc.noaa.gov/

National Weather Service:
https://www.weather.gov/

StormThreat is developed by Ultimate Enterprises LLC and is not affiliated with, endorsed by, or operated by any government agency.

StormThreat does not issue weather warnings or replace emergency notifications. For current warnings and safety instructions, consult the National Weather Service and local emergency management authorities.