Warning and watch polygons are the exact shapes issued by the National Weather Service — not approximations. The map checks for new alerts every 3 minutes while open. Quiet map = good news: no tornado warnings are in effect.
Conditions are favorable for tornadoes over a broad area in the coming hours. Nothing has been sighted yet. Keep an eye on the sky and on this map, know where you would shelter, charge your phone.
A tornado has been sighted or indicated by radar inside the red polygon. Take shelter now: lowest floor, interior room, away from windows. Mobile homes are not safe — move to a sturdy building.
| Time (UTC) | Location | County | State | Notes |
|---|---|---|---|---|
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Preliminary local storm reports from the NOAA Storm Prediction Center — surveyed ratings (EF-scale) come days later.
The United States sees about 1,200 tornadoes a year — more than anywhere else on Earth, because flat terrain lets dry Rocky-Mountain air collide with warm, moist Gulf air. The classic Tornado Alley runs from Texas through Oklahoma and Kansas into Nebraska; Dixie Alley (Mississippi, Alabama, Tennessee) is infamous for fast, rain-wrapped, night-time tornadoes.
Peak season is April–June, when the strongest outbreaks occur; a secondary peak hits in November. But tornadoes have struck every state and every month of the year — which is exactly why a live map beats a calendar.
Is this map official?
The data is 100% official — NWS warnings, SPC reports and
outlooks — displayed unmodified. For emergency decisions always follow local authorities and
NOAA Weather Radio.
Does the map cover places outside the US?
Live warning polygons exist only for
the United States (no other country publishes them openly in real time). Reported tornadoes
and the outlook are also US products.
What does the shaded outlook mean?
The Storm Prediction Center's Day-1 outlook:
the darker the shading, the higher the chance of severe storms — from light green (general
thunderstorms) up to magenta (HIGH risk, likely outbreak).