Weather alerts in Guam, 2017
67 weather alerts in 2017, 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
- 67
- Warnings
- 9
- Watches
- 1
- Advisories
- 56
- Busiest month
- October20 alerts
- Busiest day
- October 17, 20175 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 15, 11:38 PM CST | High Surf Advisory | GUM | 4 days | |
| Jan 15, 11:39 PM CST | Small Craft Advisory | GUM | 4 days | |
| Jan 21, 1:40 PM CST | Small Craft Advisory for Winds | GUM | 24 hr | |
| Jan 22, 2:30 PM CST | High Surf Advisory | GUM | 5 days | |
| Jan 22, 2:32 PM CST | Small Craft Advisory | GUM | 5 days | |
| Feb 4, 1:55 PM CST | Small Craft Advisory | GUM | 35 hr | |
| Feb 4, 1:55 PM CST | High Surf Advisory | GUM | 35 hr | |
| Feb 7, 10:38 AM CST | Areal Flood Advisory | GUM | 5 hr | |
| Feb 7, 2:09 PM CST | Small Craft Advisory for Hazardous Seas | GUM | 11 hr | |
| Feb 7, 6:34 PM CST | High Surf Advisory | GUM | 17 hr | |
| Feb 9, 7:04 PM CST | High Surf Advisory | GUM | 17 hr | |
| Feb 11, 7:04 PM CST | Small Craft Advisory | GUM | 7 days | |
| Feb 11, 7:57 PM CST | High Surf Advisory | GUM | 7 days | |
| Feb 24, 1:10 AM CST | High Surf Advisory | GUM | 24 hr | |
| Mar 16, 1:08 AM CDT | High Surf Advisory | GUM | 4 days | |
| Mar 16, 7:37 PM CDT | Small Craft Advisory for Hazardous Seas | GUM | 21 hr | |
| Mar 17, 3:34 PM CDT | Small Craft Advisory | GUM | 165 days | |
| Mar 19, 1:17 AM CDT | Small Craft Advisory for Winds | GUM | 15 hr | |
| Mar 20, 2:25 AM CDT | Small Craft Advisory for Winds | GUM | 12 hr | |
| Mar 28, 12:54 PM CDT | Small Craft Advisory | GUM | 211 days | |
| Mar 28, 9:26 PM CDT | Small Craft Advisory | GUM | 208 days | |
| Mar 29, 8:18 PM CDT | High Surf Advisory | GUM | 29 hr | |
| Apr 4, 5:16 PM CDT | Small Craft Advisory | GUM | 203 days | |
| Apr 4, 5:16 PM CDT | High Surf Advisory | GUM | 71 hr | |
| May 13, 3:38 AM CDT | Dense Smoke Advisory | GUM | 5 hr | |
| May 13, 9:10 AM CDT | Dense Smoke Advisory | GUM | 10 hr | |
| Jun 6, 9:03 PM CDT | Areal Flood Advisory | GUM | 3 hr | |
| Jun 24, 10:54 PM CDT | Small Craft Advisory for Winds | GUM | 15 hr | |
| Jul 1, 9:38 PM CDT | Special Marine Warning | GUM | 112 min | |
| Jul 29, 11:09 PM CDT | Areal Flood Advisory | GUM | 3 hr | |
| Aug 20, 5:11 PM CDT | Areal Flood Advisory | GUM | 109 min | |
| Aug 27, 3:14 AM CDT | Small Craft Advisory for Winds | GUM | 19 hr | |
| Aug 27, 8:40 AM CDT | Areal Flood Advisory | GUM | 3 hr | |
| Aug 29, 1:55 AM CDT | High Surf Advisory | GUM | 48 hr | |
| Sep 7, 3:58 PM CDT | Areal Flood Advisory | GUM | 3 hr | |
| Sep 8, 3:00 PM CDT | Small Craft Advisory for Winds | GUM | 24 hr | |
| Sep 8, 9:35 PM CDT | Areal Flood Advisory | GUM | 3 hr | |
| Sep 9, 12:42 AM CDT | Areal Flood Advisory | GUM | 3 hr | |
| Oct 16, 2:41 AM CDT | Small Craft Advisory for Winds | GUM | 13 hr | |
| Oct 17, 4:42 AM CDT | Areal Flood Advisory | GUM | 2 hr | |
| Oct 17, 12:58 PM CDT | High Wind Warning | GUM | 62 min | |
| Oct 17, 3:00 PM CDT | Small Craft Advisory for Winds | GUM | 13 hr | |
| Oct 17, 3:00 PM CDT | Small Craft Advisory for Winds | GUM | 13 hr | |
| Oct 17, 6:41 PM CDT | High Surf Advisory | GUM | 7 hr | |
| Oct 17, 10:44 PM CDT | Wind Advisory | GUM | 5 hr | |
| Oct 17, 11:49 PM CDT | Special Marine Warning | GUM | 86 min | |
| Oct 18, 1:10 AM CDT | Wind Advisory | GUM | 3 hr | |
| Oct 18, 2:00 AM CDT | High Surf Advisory | GUM | 3 days | |
| Oct 18, 8:50 PM CDT | Special Marine Warning | GUM | 85 min | |
| Oct 20, 12:38 AM CDT | Tropical Storm Watch | GUM | 4 days | |
| Oct 21, 4:42 AM CDT | High Surf Warning | GUM | 46 hr | |
| Oct 21, 5:42 AM CDT | High Surf Advisory | GUM | 4 days | |
| Oct 21, 2:45 PM CDT | Hazardous Seas Warning | GUM | 23 hr | |
| Oct 22, 3:06 PM CDT | Hazardous Seas Warning | GUM | 12 hr | |
| Oct 23, 3:08 PM CDT | Hazardous Seas Warning | GUM | 16 hr | |
| Oct 23, 3:11 PM CDT | High Surf Warning | GUM | 16 hr | |
| Oct 23, 4:11 PM CDT | High Surf Advisory | GUM | 33 hr | |
| Oct 23, 7:46 PM CDT | Wind Advisory | GUM | 7 hr | |
| Nov 5, 10:21 PM CST | Small Craft Advisory for Winds | GUM | 14 hr | |
| Nov 24, 12:36 AM CST | Small Craft Advisory | GUM | 4 days | |
| Nov 25, 12:32 PM CST | High Surf Advisory | GUM | 62 hr | |
| Dec 2, 1:50 AM CST | Small Craft Advisory | GUM | 54 hr | |
| Dec 2, 1:50 AM CST | High Surf Advisory | GUM | 23 hr | |
| Dec 19, 5:29 PM CST | Small Craft Advisory | GUM | 21 hr | |
| Dec 21, 2:46 PM CST | Small Craft Advisory | GUM | 22 hr | |
| Dec 29, 1:27 AM CST | Rip Current Statement | GUM | 47 hr | |
| Dec 29, 2:00 AM CST | High Surf Advisory | GUM | 46 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 | 9 |
| Wind and dust | |
| High Wind Warning | 1 |
| Wind Advisory | 3 |
| Fog and smoke | |
| Dense Smoke Advisory | 2 |
| Tropical | |
| Tropical Storm Watch | 1 |
| Coast and beach | |
| High Surf Warning | 2 |
| High Surf Advisory | 18 |
| Rip Current Statement | 1 |
| Marine | |
| Hazardous Seas Warning | 3 |
| Special Marine Warning | 3 |
| Small Craft Advisory | 12 |
| Small Craft Advisory for Hazardous Seas | 2 |
| Small Craft Advisory for Winds | 10 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordThe radar archive20162018
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.