Severe Weather Outlook
Sunday, September 13
Scattered severe storms are possible today. Expect a few storms capable of damaging wind, hail, and perhaps an isolated tornado.
Watch today's outlook
📍 Severe storms are most likely across New York, Ohio, Pennsylvania, and West Virginia.
🌊 Flash flooding is ongoing in Arizona.
Today's threats
- Wind15%
scattered damaging wind gusts
- Tornado5%
a few tornadoes possible
- Hail5%
isolated large hail possible
Percentages are the SPC probability of that hazard within about 25 miles of a point.
Risk levels in effect today
- Slight Risk
- Marginal Risk
- General Thunderstorms
About this outlook
This page updates every day with the severe thunderstorm outlook from the NOAA/NWS Storm Prediction Center (SPC). The risk categories — Marginal, Slight, Enhanced, Moderate, and High — describe how likely and how widespread severe storms are expected to be. Higher categories mean a greater chance of damaging wind, large hail, and tornadoes.
Atmostorm is a free severe-weather map that aggregates NWS alerts, radar, satellite, SPC outlooks, and more. Open the live map to see current radar and warnings, or set up push alerts for your saved locations.
Not an official forecast — always confirm current watches and warnings at weather.gov and follow guidance from your local NWS office and emergency officials.