Alert archive / Guam / 2026
Weather alerts in Guam, September 2026
16 weather alerts in September 2026, 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
- 16
- Warnings
- 4
- Watches
- 1
- Advisories
- 10
- Busiest day
- September 9, 20264 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 |
|---|---|---|---|---|
| Sep 2, 3:04 AM CDT | Rip Current Statement | GUM | 58 hr | |
| Sep 2, 3:04 AM CDT | High Surf Advisory | GUM | 58 hr | |
| Sep 6, 4:15 AM CDT | Flash Flood Warning | GUM | 90 min | |
| Sep 8, 4:05 PM CDT | Areal Flood Advisory | GUM | 115 min | |
| Sep 8, 11:05 PM CDT | Areal Flood Advisory | GUM | 85 min | |
| Sep 9, 12:02 AM CDT | Flash Flood Warning | GUM | 88 min | |
| Sep 9, 12:25 AM CDT | Areal Flood Advisory | GUM | 2 hr | |
| Sep 9, 1:38 AM CDT | Flash Flood Warning | GUM | 82 min | |
| Sep 13, 12:18 AM CDT | Areal Flood Advisory | GUM | 3 hr | |
| Sep 15, 9:20 AM CDT | Areal Flood Advisory | GUM | 5 hr | |
| Sep 18, 9:43 AM CDT | Areal Flood Advisory | GUM | 60 min | |
| Sep 19, 5:04 AM CDT | Areal Flood Advisory | GUM | 86 min | |
| Sep 19, 5:49 AM CDT | Flash Flood Warning | GUM | 56 min | |
| Sep 19, 6:29 AM CDT | Areal Flood Advisory | GUM | 61 min | |
| Sep 19, 8:09 PM CDT | Areal Flood Advisory | GUM | 3 hr | |
| Sep 21, 12:35 AM CDT | Flood Watch | GUM | 15 hr |
By product
Every kind of product issued here, grouped by hazard. Each opens the same place narrowed to that product.
| Product | Alerts |
|---|---|
| Flooding | |
| Flash Flood Warning | 4 |
| Flood Watch | 1 |
| Areal Flood Advisory | 9 |
| Coast and beach | |
| High Surf Advisory | 1 |
| Rip Current Statement | 1 |
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.