Alert archive / Guam / 2025
Weather alerts in Guam, August 2025
10 weather alerts in August 2025, 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
- 10
- Warnings
- 0
- Watches
- 0
- Advisories
- 10
- Busiest day
- August 21, 20253 alerts
Over time
By day
Days in UTC, the clock the archive keeps.
The alerts
Every alert, in the order issued. Times are local, Central Time. Each opens its own page with the text, the map, the radar and the sounding.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 1, 3:50 AM CDT | Areal Flood Advisory | GUM | 2 hr | |
| Aug 6, 7:53 PM CDT | Areal Flood Advisory | GUM | 82 min | |
| Aug 11, 5:02 AM CDT | Areal Flood Advisory | GUM | 58 min | |
| Aug 14, 5:01 AM CDT | Areal Flood Advisory | GUM | 3 hr | |
| Aug 19, 2:35 AM CDT | Areal Flood Advisory | GUM | 70 min | |
| Aug 20, 10:13 PM CDT | Areal Flood Advisory | GUM | 107 min | |
| Aug 21, 3:57 PM CDT | Areal Flood Advisory | GUM | 2 hr | |
| Aug 21, 6:38 PM CDT | Areal Flood Advisory | GUM | 3 hr | |
| Aug 22, 6:15 PM CDT | Areal Flood Advisory | GUM | 78 min | |
| Aug 29, 3:41 PM CDT | Areal Flood Advisory | GUM | 109 min |
By product
Every kind of product issued here, grouped by hazard. Each opens the same place narrowed to that product.
| Product | Alerts |
|---|---|
| Flooding | |
| Areal Flood Advisory | 10 |
Nearby
Alerts in force nowTornadoes on recordThe radar archive20242026
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. Warning verification from the Mesonet's Cow. Rebuilt daily.