Live weather-peril watch wall
Every official storm warning. One calm wall.
Thunderstorm, hail, wind, tornado, hard freeze and lightning, reprinted live from the weather services that issue them, with credit on every card. Live now: United States. Switching on next: Canada, Europe.
Research Lab
Bring a weather idea. We test it in the open.
Anyone can submit an idea about storms, hail, wind, cold or lightning. It is tested against official data, and the result is published pass or fail, with the data and the method.
See the Research Lab Submit an idea →The board is open
No tests have been published yet. The first ones go up here with their data, their method and their result, whichever way it lands.
Peril Globe
The whole planet, live where we cover it.
Spin the Earth and see where official warnings are in effect right now. The globe loads only when you ask for it, so this page stays fast.
Open the full globeThe live wall
Six perils. One page each.
Each page shows the official warnings for its peril, the reports that follow, and the maps the weather services publish, all credited.
Thunderstorm
Severe thunderstorm warnings and watches as the National Weather Service issues them, next to today's Storm Prediction Center reports.
Open the thunderstorm wall →Hail
Three official layers, each credited: the warning as issued (before), the radar estimate (during) and the ground reports (after).
Open the hail wall →Wind
High wind warnings and watches as issued, next to today's wind reports.
Open the wind wall →Tornado
Tornado warnings and watches as the National Weather Service issues them, next to today's preliminary tornado reports.
Open the tornado wall →Hard Freeze
Freeze warnings, watches and frost advisories as issued, with the coldest station readings right now.
Open the hard freeze wall →Lightning
Official lightning maps from ground networks and weather satellites, refreshed every few minutes.
Open the lightning wall →Free email
The Weekly Peril Report
One short email a week: the biggest storm days, where they hit, and what the official reports said. No spam, unsubscribe any time.
How it works
Official streams in. Credit on every card.
PerilRadar is not a warning service. It reprints official warnings with credit and never issues its own.
Read how the wall is built →- Official feeds only. Warnings and reports come straight from the national weather services.
- Reprinted, never reworded. Every warning keeps its original words, its issue time and a link back.
- FACT or MODEL, always labeled. Anything we calculate is marked MODEL, so it can never pass for a warning.
- Offline says offline. If a source goes quiet, its card says so and everything else keeps working.
Membership
Go deeper with the Command Center.
The free wall shows what is happening now. Members get the tools behind it: every peril on one screen, anomalies against normal, storm replay and the weather almanac.
PerilRadar Membership
- Command Center: all six perils on one live screen
- Anomalies versus normal, labeled MODEL
- Storm Replay: scrub back through past storm days
- Weather Almanac: records and peril history
Work with us
Data partners, researchers and sponsors
Weather services, universities, insurers and storm-spotter groups: if you publish official or research-grade weather data, we would like to credit it here.
Credit where it is due
Official sources
These services issue the warnings and publish the data. We reprint them with credit and are not affiliated with or endorsed by any of them.
Common questions
Does PerilRadar issue weather warnings?
No. PerilRadar is not a warning service. Every warning is issued by an official weather service, such as the US National Weather Service, and reprinted here exactly as published with credit and a link to the original.
What does FACT and MODEL mean on a card?
FACT marks official data shown with its source. MODEL marks anything PerilRadar computes itself, such as a reading compared with its 30-year normal. The two always look different so nobody mistakes a calculation for a warning.
Which regions are covered?
The United States is live now. Canada and Europe switch on as soon as their official feeds pass testing. The globe shows the whole planet, but live data loads only for covered regions to keep pages light.
Is PerilRadar free?
Yes. The live wall, the six peril pages, the Peril Globe, the Warning Guide and the Research Lab are free to read. Membership opens the Command Center and the Weather Almanac.
What happens when a source goes down?
Its card says offline in plain words and the rest of the page keeps working. A quiet day with no warnings shows a calm No active warnings card, which is a healthy state, not an error.
Watch the weather the calm way.
Official warnings, clearly credited, on one light and fast wall.
Open the live wall