Weather alerts in Guam
2,366 weather alerts since 1986, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered any part of the state, so the counties below add up to more than the state.
- Alerts
- 2,366
- Warnings
- 420
- Watches
- 228
- Advisories
- 1,473
- Busiest year
- 2022240 alerts
- Average year
- 108over 22 years on file
Over time
By year
Before late 2005 the archive holds only tornado, severe thunderstorm, flash flood and marine warnings, and from 1997 SPC's watches, so the jump that year is the archive widening, not the weather.
By month of the year
By product
Every kind of product issued here, grouped by hazard. Each opens the same place narrowed to that product.
The latest warnings
The most recent on file, newest first.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 19, 5:49 AM CDT | Flash Flood Warning | GUM | 56 min | |
| Sep 9, 1:38 AM CDT | Flash Flood Warning | GUM | 82 min | |
| Sep 9, 12:02 AM CDT | Flash Flood Warning | GUM | 88 min | |
| Sep 6, 4:15 AM CDT | Flash Flood Warning | GUM | 90 min | |
| Aug 30, 4:35 AM CDT | Flash Flood Warning | GUM | 74 min | |
| Aug 30, 2:33 AM CDT | Flash Flood Warning | GUM | 72 min | |
| Aug 25, 3:57 PM CDT | Flash Flood Warning | GUM | 93 min | |
| Aug 19, 12:05 AM CDT | Flash Flood Warning | GUM | 115 min | |
| Aug 5, 9:48 PM CDT | Flash Flood Warning | GUM | 87 min | |
| Jul 10, 1:02 AM CDT | Flash Flood Warning | GUM | 88 min | |
| Jul 6, 1:21 AM CDT | Flash Flood Warning | GUM | 3 hr | |
| Jul 5, 11:10 AM CDT | Flash Flood Warning | GUM | 14 hr |
Nearby
Sources
National Weather Service watches, warnings, advisories and statements from the Iowa Environmental Mesonet's VTEC archive, which reconstructs tornado, severe thunderstorm, flash flood and marine warnings back to 1986 from the NWS text archive. Storm Prediction Center watches and mesoscale discussions from SPC's archive through the Mesonet. County centers from the US Census Bureau. Rebuilt daily.