Flash Flood Warnings in Guam
136 flash flood warnings since 1986. An alert counts here when it covered any part of the state, so the counties below add up to more than the state. The archive of flash flood warnings reaches back to 1986.
- Flash Flood Warnings
- 136
- Busiest year
- 202320 flash flood warnings
- Average year
- 10over 14 years on file
Over time
By year
Before October 2007 these were issued for whole counties, and a storm crossing three counties was often three warnings; since then one polygon follows the storm. The count changed with the practice, not only with the weather.
By month of the year
The latest flash flood 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.