Weather alerts in Guam, 2009
97 weather alerts in 2009, 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
- 97
- Warnings
- 8
- Watches
- 9
- Advisories
- 80
- Busiest month
- September20 alerts
- Busiest day
- February 22, 20094 alerts
Over time
By month
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 |
|---|---|---|---|---|
| Jan 2, 1:00 AM CST | High Surf Advisory | GUM | 6 days | |
| Jan 2, 2:00 AM CST | Small Craft Advisory for Hazardous Seas | GUM | 3 days | |
| Jan 4, 12:42 AM CST | Areal Flood Advisory | GUM | 6 hr | |
| Jan 9, 11:01 PM CST | High Surf Advisory | GUM | 13 hr | |
| Jan 11, 2:41 PM CST | High Surf Advisory | GUM | 60 hr | |
| Jan 11, 4:35 PM CST | Small Craft Advisory for Hazardous Seas | GUM | 23 hr | |
| Jan 17, 2:00 PM CST | Small Craft Advisory for Hazardous Seas | GUM | 49 hr | |
| Jan 25, 12:50 AM CST | Small Craft Advisory | GUM | 62 hr | |
| Jan 27, 1:53 PM CST | Small Craft Advisory for Hazardous Seas | GUM | 49 hr | |
| Feb 1, 2:00 PM CST | Small Craft Advisory for Hazardous Seas | GUM | 4 days | |
| Feb 2, 12:13 AM CST | High Surf Advisory | GUM | 4 days | |
| Feb 2, 10:03 PM CST | High Surf Warning | GUM | 28 hr | |
| Feb 12, 3:08 PM CST | Small Craft Advisory for Hazardous Seas | GUM | 11 hr | |
| Feb 13, 12:45 AM CST | Small Craft Advisory | GUM | 38 hr | |
| Feb 14, 1:31 AM CST | High Surf Advisory | GUM | 36 hr | |
| Feb 14, 2:08 PM CST | Small Craft Advisory for Hazardous Seas | GUM | 49 hr | |
| Feb 15, 4:48 PM CST | Fire Weather Watch | GUM | 4 days | |
| Feb 19, 2:00 AM CST | Small Craft Advisory | GUM | 36 hr | |
| Feb 21, 1:11 PM CST | Small Craft Advisory | GUM | 13 hr | |
| Feb 22, 1:35 AM CST | Small Craft Advisory for Winds | GUM | 12 hr | |
| Feb 22, 1:35 AM CST | Small Craft Advisory for Hazardous Seas | GUM | 12 hr | |
| Feb 22, 11:40 AM CST | High Surf Advisory | GUM | 14 hr | |
| Feb 22, 11:55 AM CST | Small Craft Advisory | GUM | 14 hr | |
| Feb 24, 1:07 AM CST | Small Craft Advisory | GUM | 5 days | |
| Feb 25, 1:16 PM CST | High Surf Advisory | GUM | 3 days | |
| Feb 25, 6:35 PM CST | Fire Weather Watch | GUM | 31 hr | |
| Mar 5, 12:00 AM CST | High Surf Advisory | GUM | 12 hr | |
| Mar 13, 2:40 AM CDT | Small Craft Advisory | GUM | 13 hr | |
| Mar 13, 1:00 PM CDT | High Surf Advisory | GUM | 36 hr | |
| Mar 14, 1:56 AM CDT | Small Craft Advisory | GUM | 12 hr | |
| Mar 14, 1:56 AM CDT | Small Craft Advisory for Hazardous Seas | GUM | 24 hr | |
| Apr 28, 8:22 AM CDT | Areal Flood Advisory | GUM | 3 hr | |
| Apr 28, 11:29 AM CDT | Areal Flood Advisory | GUM | 6 hr | |
| May 5, 8:06 PM CDT | Areal Flood Advisory | GUM | 3 hr | |
| Jul 18, 3:43 AM CDT | Special Marine Warning | GUM | 32 min | |
| Jul 29, 1:17 AM CDT | High Surf Advisory | GUM | 11 days | |
| Jul 31, 1:44 AM CDT | Small Craft Advisory for Hazardous Seas | GUM | 3 days | |
| Aug 1, 3:53 AM CDT | Areal Flood Advisory | GUM | 3 hr | |
| Aug 3, 6:11 AM CDT | Areal Flood Advisory | GUM | 3 hr | |
| Aug 4, 1:25 PM CDT | Areal Flood Advisory | GUM | 3 hr | |
| Aug 4, 3:52 PM CDT | Areal Flood Advisory | GUM | 3 hr | |
| Aug 6, 2:01 PM CDT | Small Craft Advisory for Hazardous Seas | GUM | 11 hr | |
| Aug 21, 5:24 AM CDT | Areal Flood Advisory | GUM | 6 hr | |
| Aug 21, 9:38 PM CDT | Areal Flood Advisory | GUM | 3 hr | |
| Aug 22, 12:36 AM CDT | Areal Flood Advisory | GUM | 3 hr | |
| Sep 2, 2:30 PM CDT | High Surf Advisory | GUM | 5 days | |
| Sep 5, 2:57 PM CDT | Small Craft Advisory for Hazardous Seas | GUM | 34 hr | |
| Sep 12, 1:26 AM CDT | Tropical Storm Watch | GUM | 24 hr | |
| Sep 12, 1:26 AM CDT | Typhoon Watch | GUM | 60 hr | |
| Sep 13, 12:31 AM CDT | Tropical Storm Warning | GUM | 60 hr | |
| Sep 13, 6:22 AM CDT | Small Craft Advisory for Winds | GUM | 26 hr | |
| Sep 13, 6:31 AM CDT | Wind Advisory | GUM | 43 hr | |
| Sep 13, 7:08 AM CDT | High Surf Advisory | GUM | 5 days | |
| Sep 14, 12:41 AM CDT | Small Craft Advisory for Hazardous Seas | GUM | 8 hr | |
| Sep 14, 7:41 AM CDT | Small Craft Advisory | GUM | 4 days | |
| Sep 15, 11:51 AM CDT | Wind Advisory | GUM | 9 hr | |
| Sep 20, 7:37 PM CDT | High Surf Advisory | GUM | 55 hr | |
| Sep 27, 6:52 AM CDT | Tropical Storm Watch | GUM | 50 hr | |
| Sep 28, 4:17 AM CDT | Small Craft Advisory | GUM | 47 hr | |
| Sep 29, 6:18 AM CDT | Tropical Storm Warning | GUM | 20 hr | |
| Sep 29, 6:56 PM CDT | Areal Flood Advisory | GUM | 6 hr | |
| Sep 30, 2:06 AM CDT | High Surf Advisory | GUM | 9 hr | |
| Sep 30, 2:41 AM CDT | Small Craft Advisory for Hazardous Seas | GUM | 8 hr | |
| Sep 30, 11:15 AM CDT | Tropical Storm Watch | GUM | 38 hr | |
| Sep 30, 11:15 AM CDT | Typhoon Watch | GUM | 56 hr | |
| Oct 1, 12:09 PM CDT | Tropical Storm Warning | GUM | 44 hr | |
| Oct 1, 6:38 PM CDT | Typhoon Warning | GUM | 41 hr | |
| Oct 2, 5:22 PM CDT | Small Craft Advisory | GUM | 45 hr | |
| Oct 2, 5:35 PM CDT | High Surf Advisory | GUM | 68 hr | |
| Oct 4, 7:29 PM CDT | Small Craft Advisory for Hazardous Seas | GUM | 18 hr | |
| Oct 5, 6:34 PM CDT | High Surf Advisory | GUM | 30 hr | |
| Oct 14, 1:38 AM CDT | Small Craft Advisory | GUM | 46 hr | |
| Oct 14, 1:40 PM CDT | Tropical Storm Watch | GUM | 9 hr | |
| Oct 14, 10:22 PM CDT | High Surf Advisory | GUM | 26 hr | |
| Oct 18, 1:30 PM CDT | High Surf Advisory | GUM | 60 hr | |
| Oct 26, 1:00 AM CDT | Tropical Storm Watch | GUM | 24 hr | |
| Oct 26, 6:36 AM CDT | Tropical Storm Warning | GUM | 19 hr | |
| Oct 27, 12:22 AM CDT | High Surf Advisory | GUM | 14 hr | |
| Oct 27, 12:29 AM CDT | Small Craft Advisory for Hazardous Seas | GUM | 14 hr | |
| Nov 4, 1:30 PM CST | High Surf Advisory | GUM | 4 days | |
| Nov 4, 2:32 PM CST | Small Craft Advisory for Hazardous Seas | GUM | 58 hr | |
| Nov 21, 1:09 PM CST | Small Craft Advisory | GUM | 24 hr | |
| Nov 22, 12:01 PM CST | Small Craft Advisory for Hazardous Seas | GUM | 12 hr | |
| Nov 22, 10:50 PM CST | High Surf Advisory | GUM | 9 days | |
| Nov 22, 11:00 PM CST | Small Craft Advisory | GUM | 3 days | |
| Nov 24, 11:21 PM CST | High Surf Warning | GUM | 21 hr | |
| Nov 25, 11:16 PM CST | Small Craft Advisory for Hazardous Seas | GUM | 4 days | |
| Nov 27, 10:10 PM CST | Areal Flood Advisory | GUM | 3 hr | |
| Dec 1, 1:27 AM CST | Small Craft Advisory for Winds | GUM | 23 hr | |
| Dec 1, 1:45 PM CST | Areal Flood Advisory | GUM | 3 hr | |
| Dec 1, 4:57 PM CST | Areal Flood Advisory | GUM | 6 hr | |
| Dec 1, 11:41 PM CST | Small Craft Advisory | GUM | 25 hr | |
| Dec 21, 1:04 AM CST | High Surf Advisory | GUM | 5 days | |
| Dec 22, 2:08 PM CST | Small Craft Advisory | GUM | 24 hr | |
| Dec 23, 1:28 AM CST | Areal Flood Advisory | GUM | 6 hr | |
| Dec 23, 1:04 PM CST | Areal Flood Advisory | GUM | 3 hr | |
| Dec 23, 3:50 PM CST | Areal Flood Advisory | GUM | 3 hr |
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 | 18 |
| Wind and dust | |
| Wind Advisory | 2 |
| Fire | |
| Fire Weather Watch | 2 |
| Tropical | |
| Tropical Storm Warning | 4 |
| Typhoon Warning | 1 |
| Tropical Storm Watch | 5 |
| Typhoon Watch | 2 |
| Coast and beach | |
| High Surf Warning | 2 |
| High Surf Advisory | 22 |
| Marine | |
| Special Marine Warning | 1 |
| Small Craft Advisory | 16 |
| Small Craft Advisory for Hazardous Seas | 19 |
| Small Craft Advisory for Winds | 3 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordThe radar archive20082010
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.