Weather alerts in Guam, 2015
158 weather alerts in 2015, 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
- 158
- Warnings
- 40
- Watches
- 14
- Advisories
- 104
- Busiest month
- July31 alerts
- Busiest day
- July 4, 201510 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 3, 12:00 AM CST | High Surf Advisory | GUM | 36 hr | |
| Jan 3, 8:48 AM CST | Small Craft Advisory for Hazardous Seas | GUM | 37 days | |
| Jan 10, 12:20 AM CST | Small Craft Advisory | GUM | 25 days | |
| Jan 10, 1:30 PM CST | High Surf Advisory | GUM | 4 days | |
| Jan 10, 1:30 PM CST | Wind Advisory | GUM | 4 days | |
| Jan 19, 9:06 PM CST | High Surf Advisory | GUM | 29 hr | |
| Jan 25, 5:43 PM CST | High Surf Advisory | GUM | 24 hr | |
| Jan 26, 6:23 PM CST | High Surf Advisory | GUM | 6 hr | |
| Feb 2, 12:28 AM CST | High Surf Advisory | GUM | 4 days | |
| Feb 2, 11:10 AM CST | Small Craft Advisory | GUM | 37 hr | |
| Feb 2, 11:51 PM CST | Small Craft Advisory | GUM | 24 hr | |
| Feb 3, 11:38 AM CST | Small Craft Advisory | GUM | 12 hr | |
| Feb 3, 11:58 PM CST | Small Craft Advisory | GUM | 25 hr | |
| Feb 4, 12:00 PM CST | Small Craft Advisory | GUM | 13 hr | |
| Feb 4, 11:53 PM CST | Small Craft Advisory | GUM | 14 hr | |
| Feb 8, 6:00 AM CST | High Surf Advisory | GUM | 36 hr | |
| Feb 8, 12:45 PM CST | Small Craft Advisory for Hazardous Seas | GUM | 29 hr | |
| Feb 8, 10:58 PM CST | Small Craft Advisory for Hazardous Seas | GUM | 19 hr | |
| Feb 9, 1:44 PM CST | Small Craft Advisory for Hazardous Seas | GUM | 4 hr | |
| Feb 11, 1:49 PM CST | Small Craft Advisory | GUM | 12 hr | |
| Feb 11, 11:46 PM CST | Small Craft Advisory | GUM | 14 hr | |
| Feb 14, 1:25 PM CST | Small Craft Advisory | GUM | 34 hr | |
| Feb 14, 1:25 PM CST | High Surf Advisory | GUM | 53 hr | |
| Feb 17, 12:04 PM CST | High Surf Advisory | GUM | 36 hr | |
| Feb 20, 2:47 PM CST | Small Craft Advisory | GUM | 3 days | |
| Feb 20, 2:47 PM CST | High Surf Advisory | GUM | 3 days | |
| Feb 20, 4:52 PM CST | Red Flag Warning | GUM | 9 hr | |
| Mar 2, 11:09 PM CST | Small Craft Advisory for Winds | GUM | 26 hr | |
| Mar 3, 11:43 PM CST | Small Craft Advisory | GUM | 22 hr | |
| Mar 13, 2:06 AM CDT | Small Craft Advisory | GUM | 42 hr | |
| Mar 14, 8:18 AM CDT | Small Craft Advisory | GUM | 11 hr | |
| Mar 14, 8:18 AM CDT | High Surf Advisory | GUM | 11 hr | |
| Mar 14, 4:17 PM CDT | Tropical Storm Warning | GUM | 25 hr | |
| Mar 14, 11:03 PM CDT | Areal Flood Advisory | GUM | 6 hr | |
| Mar 15, 2:00 PM CDT | Small Craft Advisory | GUM | 34 hr | |
| Mar 15, 2:00 PM CDT | High Surf Advisory | GUM | 36 hr | |
| Mar 26, 8:39 AM CDT | Small Craft Advisory | GUM | 29 hr | |
| Mar 28, 12:03 AM CDT | Small Craft Advisory | GUM | 4 days | |
| Mar 30, 1:48 AM CDT | High Surf Advisory | GUM | 37 hr | |
| Mar 30, 5:26 PM CDT | Hazardous Seas Warning | GUM | 11 hr | |
| Mar 30, 5:26 PM CDT | High Surf Warning | GUM | 11 hr | |
| Mar 30, 6:26 PM CDT | Small Craft Advisory | GUM | 21 hr | |
| Mar 30, 6:26 PM CDT | High Surf Advisory | GUM | 21 hr | |
| Apr 4, 3:01 PM CDT | Small Craft Advisory | GUM | 24 hr | |
| Apr 22, 1:00 AM CDT | Small Craft Advisory | GUM | 39 hr | |
| May 12, 6:29 PM CDT | Tropical Storm Watch | GUM | 7 hr | |
| May 12, 6:29 PM CDT | Typhoon Watch | GUM | 44 hr | |
| May 13, 1:03 AM CDT | Small Craft Advisory | GUM | 20 hr | |
| May 14, 12:11 AM CDT | Tropical Storm Warning | GUM | 8 hr | |
| May 14, 12:11 AM CDT | Tropical Storm Warning | GUM | 14 hr | |
| May 14, 12:11 AM CDT | Typhoon Warning | GUM | 43 hr | |
| May 15, 1:39 AM CDT | Flash Flood Warning | GUM | 5 hr | |
| May 15, 1:40 AM CDT | Flash Flood Warning | GUM | 5 hr | |
| May 15, 7:05 AM CDT | Flash Flood Warning | GUM | 5 hr | |
| May 15, 7:34 PM CDT | High Surf Advisory | GUM | 48 hr | |
| May 15, 7:39 PM CDT | Wind Advisory | GUM | 6 hr | |
| May 15, 7:43 PM CDT | Small Craft Advisory | GUM | 44 hr | |
| Jul 2, 12:39 AM CDT | Typhoon Watch | GUM | 3 days | |
| Jul 4, 12:45 AM CDT | Flash Flood Watch | GUM | 50 hr | |
| Jul 4, 1:31 AM CDT | Tropical Storm Warning | GUM | 32 hr | |
| Jul 4, 3:15 AM CDT | Typhoon Warning | GUM | 23 hr | |
| Jul 4, 6:38 AM CDT | Small Craft Advisory | GUM | 6 hr | |
| Jul 4, 6:38 AM CDT | Small Craft Advisory | GUM | 19 hr | |
| Jul 4, 7:51 AM CDT | High Surf Advisory | GUM | 17 hr | |
| Jul 4, 11:18 AM CDT | Areal Flood Advisory | GUM | 3 hr | |
| Jul 4, 1:36 PM CDT | Flash Flood Warning | GUM | 5 hr | |
| Jul 4, 5:57 PM CDT | Flash Flood Warning | GUM | 6 hr | |
| Jul 4, 5:58 PM CDT | Flash Flood Warning | GUM | 6 hr | |
| Jul 4, 11:20 PM CDT | Flash Flood Warning | GUM | 3 hr | |
| Jul 4, 11:23 PM CDT | Flash Flood Warning | GUM | 6 hr | |
| Jul 5, 12:13 AM CDT | High Surf Advisory | GUM | 8 days | |
| Jul 5, 12:21 AM CDT | Small Craft Advisory | GUM | 9 days | |
| Jul 5, 12:21 AM CDT | Tropical Storm Warning | GUM | 9 hr | |
| Jul 5, 12:33 PM CDT | Areal Flood Advisory | GUM | 3 hr | |
| Jul 5, 12:33 PM CDT | Areal Flood Advisory | GUM | 3 hr | |
| Jul 7, 11:03 PM CDT | Typhoon Watch | GUM | 26 hr | |
| Jul 8, 2:39 AM CDT | High Surf Warning | GUM | 13 hr | |
| Jul 8, 2:39 AM CDT | High Surf Advisory | GUM | 13 hr | |
| Jul 8, 6:27 AM CDT | Tropical Storm Warning | GUM | 28 hr | |
| Jul 8, 7:33 AM CDT | Small Craft Advisory | GUM | 8 hr | |
| Jul 10, 2:44 AM CDT | High Surf Warning | GUM | 22 hr | |
| Jul 10, 3:44 AM CDT | High Surf Advisory | GUM | 23 hr | |
| Jul 11, 1:32 AM CDT | High Surf Warning | GUM | 23 hr | |
| Jul 12, 1:24 AM CDT | High Surf Warning | GUM | 24 hr | |
| Jul 12, 2:24 AM CDT | High Surf Advisory | GUM | 72 hr | |
| Jul 15, 1:02 PM CDT | High Surf Advisory | GUM | 12 hr | |
| Jul 22, 10:45 PM CDT | Areal Flood Advisory | GUM | 5 hr | |
| Jul 31, 6:16 AM CDT | Typhoon Watch | GUM | 19 hr | |
| Aug 1, 12:29 AM CDT | Tropical Storm Watch | GUM | 19 hr | |
| Aug 1, 12:29 AM CDT | Typhoon Warning | GUM | 46 hr | |
| Aug 1, 6:22 PM CDT | Tropical Storm Warning | GUM | 28 hr | |
| Aug 1, 9:00 PM CDT | Small Craft Advisory | GUM | 41 hr | |
| Aug 1, 9:00 PM CDT | Small Craft Advisory for Hazardous Seas | GUM | 66 hr | |
| Aug 1, 9:49 PM CDT | Wind Advisory | GUM | 23 hr | |
| Aug 2, 12:54 PM CDT | High Surf Advisory | GUM | 6 days | |
| Aug 4, 1:54 PM CDT | Small Craft Advisory | GUM | 12 hr | |
| Aug 5, 2:39 AM CDT | Areal Flood Advisory | GUM | 3 hr | |
| Aug 14, 12:46 AM CDT | Tropical Storm Watch | GUM | 22 hr | |
| Aug 14, 12:46 AM CDT | Typhoon Watch | GUM | 49 hr | |
| Aug 14, 7:05 PM CDT | Tropical Storm Warning | GUM | 31 hr | |
| Aug 14, 7:31 PM CDT | Flash Flood Watch | GUM | 29 hr | |
| Aug 14, 9:18 PM CDT | Tropical Storm Warning | GUM | 28 hr | |
| Aug 14, 10:40 PM CDT | Areal Flood Advisory | GUM | 6 hr | |
| Aug 15, 12:41 AM CDT | Flash Flood Warning | GUM | 6 hr | |
| Aug 15, 6:58 AM CDT | Flash Flood Warning | GUM | 8 hr | |
| Aug 15, 8:54 AM CDT | Areal Flood Advisory | GUM | 6 hr | |
| Aug 15, 2:40 PM CDT | Flash Flood Warning | GUM | 6 hr | |
| Aug 15, 2:53 PM CDT | Areal Flood Advisory | GUM | 6 hr | |
| Aug 15, 11:28 PM CDT | High Surf Advisory | GUM | 49 hr | |
| Aug 16, 12:12 AM CDT | Small Craft Advisory | GUM | 15 hr | |
| Aug 16, 12:12 AM CDT | Typhoon Watch | GUM | 60 min | |
| Aug 19, 12:53 AM CDT | High Surf Advisory | GUM | 6 days | |
| Aug 19, 12:54 AM CDT | Small Craft Advisory | GUM | 4 days | |
| Aug 27, 3:00 PM CDT | High Surf Advisory | GUM | 3 days | |
| Sep 8, 12:55 PM CDT | High Surf Advisory | GUM | 51 hr | |
| Sep 9, 1:08 AM CDT | Small Craft Advisory for Hazardous Seas | GUM | 21 hr | |
| Sep 18, 12:00 AM CDT | High Surf Advisory | GUM | 25 hr | |
| Sep 19, 11:32 PM CDT | Areal Flood Advisory | GUM | 3 hr | |
| Sep 20, 2:17 PM CDT | Small Craft Advisory | GUM | 49 hr | |
| Sep 21, 1:00 PM CDT | High Surf Advisory | GUM | 25 hr | |
| Sep 24, 12:47 AM CDT | High Surf Advisory | GUM | 5 days | |
| Oct 4, 3:00 PM CDT | Small Craft Advisory | GUM | 5 days | |
| Oct 4, 8:03 PM CDT | High Surf Advisory | GUM | 7 days | |
| Oct 12, 1:17 AM CDT | Flash Flood Watch | GUM | 26 hr | |
| Oct 12, 1:50 AM CDT | High Surf Advisory | GUM | 36 hr | |
| Oct 12, 1:52 AM CDT | Small Craft Advisory | GUM | 24 hr | |
| Oct 14, 6:14 PM CDT | Tropical Storm Watch | GUM | 7 hr | |
| Oct 14, 10:17 PM CDT | Small Craft Advisory | GUM | 3 days | |
| Oct 14, 10:17 PM CDT | High Surf Advisory | GUM | 32 hr | |
| Oct 15, 12:00 AM CDT | Tropical Storm Warning | GUM | 7 days | |
| Oct 15, 10:05 AM CDT | Flash Flood Warning | GUM | 8 hr | |
| Oct 15, 10:44 AM CDT | Flash Flood Warning | GUM | 7 hr | |
| Oct 15, 2:42 PM CDT | Wind Advisory | GUM | 12 hr | |
| Oct 15, 4:23 PM CDT | Tropical Storm Warning | GUM | 7 days | |
| Oct 15, 4:49 PM CDT | Areal Flood Advisory | GUM | 3 hr | |
| Oct 15, 7:21 PM CDT | Flash Flood Warning | GUM | 6 hr | |
| Oct 15, 7:58 PM CDT | Areal Flood Advisory | GUM | 3 hr | |
| Oct 16, 12:43 AM CDT | Flash Flood Warning | GUM | 5 hr | |
| Oct 16, 5:27 AM CDT | High Surf Warning | GUM | 35 hr | |
| Oct 16, 6:27 AM CDT | High Surf Advisory | GUM | 9 days | |
| Oct 16, 12:25 PM CDT | Hazardous Seas Warning | GUM | 15 hr | |
| Oct 16, 12:25 PM CDT | Hazardous Seas Warning | GUM | 27 hr | |
| Oct 16, 4:18 PM CDT | Areal Flood Advisory | GUM | 117 min | |
| Oct 16, 5:14 PM CDT | Wind Advisory | GUM | 10 hr | |
| Oct 18, 1:06 AM CDT | Small Craft Advisory for Hazardous Seas | GUM | 3 days | |
| Nov 16, 1:20 PM CST | Small Craft Advisory | GUM | 6 days | |
| Nov 17, 8:34 PM CST | High Surf Advisory | GUM | 4 days | |
| Nov 18, 7:19 PM CST | Tropical Storm Watch | GUM | 26 hr | |
| Nov 19, 8:03 PM CST | Tropical Storm Warning | GUM | 24 hr | |
| Nov 20, 6:59 PM CST | Wind Advisory | GUM | 7 hr | |
| Nov 29, 12:10 AM CST | Small Craft Advisory for Hazardous Seas | GUM | 14 hr | |
| Dec 6, 2:43 PM CST | Small Craft Advisory | GUM | 5 days | |
| Dec 11, 6:21 AM CST | High Surf Advisory | GUM | 19 hr | |
| Dec 20, 6:46 AM CST | High Surf Advisory | GUM | 42 hr | |
| Dec 20, 12:18 PM CST | Small Craft Advisory for Winds | GUM | 15 hr | |
| Dec 21, 1:54 AM CST | Small Craft Advisory | GUM | 35 hr | |
| Dec 21, 1:54 AM CST | Small Craft Advisory for Hazardous Seas | GUM | 11 hr | |
| Dec 27, 11:09 AM CST | Small Craft Advisory | GUM | 37 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 | 15 |
| Flash Flood Watch | 3 |
| Areal Flood Advisory | 13 |
| Wind and dust | |
| Wind Advisory | 6 |
| Fire | |
| Red Flag Warning | 1 |
| Tropical | |
| Tropical Storm Warning | 12 |
| Typhoon Warning | 3 |
| Tropical Storm Watch | 5 |
| Typhoon Watch | 6 |
| Coast and beach | |
| High Surf Warning | 6 |
| High Surf Advisory | 36 |
| Marine | |
| Hazardous Seas Warning | 3 |
| Small Craft Advisory | 38 |
| Small Craft Advisory for Hazardous Seas | 9 |
| Small Craft Advisory for Winds | 2 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordThe radar archive20142016
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.