Weather alerts in Guam, 2026

152 weather alerts in 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: 152
Warnings: 29
Watches: 10
Advisories: 89
Busiest month: March30 alerts
Busiest day: March 12, 20267 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	Lasted
Jan 3, 11:54 PM CST	Rip Current Statement	GUM	4 days
Jan 3, 11:54 PM CST	High Surf Advisory	GUM	4 days
Jan 9, 11:21 PM CST	Rip Current Statement	GUM	5 days
Jan 9, 11:21 PM CST	High Surf Advisory	GUM	48 hr
Jan 20, 8:20 PM CST	Areal Flood Advisory	GUM	45 min
Jan 20, 9:06 PM CST	Flash Flood Warning	GUM	29 min
Jan 20, 9:08 PM CST	Areal Flood Advisory	GUM	37 min
Jan 23, 12:14 AM CST	High Surf Advisory	GUM	5 days
Jan 23, 1:45 AM CST	Rip Current Statement	GUM	5 days
Jan 24, 9:06 PM CST	Areal Flood Advisory	GUM	107 min
Jan 27, 1:30 AM CST	Areal Flood Advisory	GUM	60 min
Jan 27, 2:20 AM CST	Areal Flood Advisory	GUM	55 min
Jan 30, 12:20 AM CST	Rip Current Statement	GUM	4 days
Jan 30, 12:20 AM CST	High Surf Advisory	GUM	3 days
Feb 3, 1:54 PM CST	Areal Flood Advisory	GUM	32 min
Feb 3, 2:26 PM CST	Flash Flood Warning	GUM	34 min
Feb 6, 3:37 PM CST	Areal Flood Advisory	GUM	38 min
Feb 9, 12:01 AM CST	Rip Current Statement	GUM	8 days
Feb 9, 12:01 AM CST	High Surf Advisory	GUM	4 days
Feb 21, 12:11 PM CST	Rip Current Statement	GUM	3 days
Feb 21, 12:11 PM CST	High Surf Advisory	GUM	3 days
Feb 23, 12:05 AM CST	Coastal Flood Statement	GUM	4 days
Feb 23, 11:12 PM CST	High Surf Warning	GUM	65 hr
Feb 24, 10:06 AM CST	Areal Flood Advisory	GUM	54 min
Feb 24, 11:04 AM CST	Areal Flood Advisory	GUM	56 min
Feb 24, 12:16 PM CST	Areal Flood Advisory	GUM	3 hr
Feb 25, 11:39 PM CST	Rip Current Statement	GUM	5 days
Feb 25, 11:39 PM CST	High Surf Advisory	GUM	4 days
Feb 27, 9:26 PM CST	Areal Flood Advisory	GUM	64 min
Mar 1, 10:08 AM CST	Areal Flood Advisory	GUM	52 min
Mar 1, 2:47 PM CST	Areal Flood Advisory	GUM	58 min
Mar 1, 3:50 PM CST	Flash Flood Warning	GUM	2 hr
Mar 1, 6:02 PM CST	Areal Flood Advisory	GUM	28 min
Mar 3, 6:52 PM CST	Rip Current Statement	GUM	6 days
Mar 3, 6:52 PM CST	High Surf Advisory	GUM	6 days
Mar 4, 11:33 PM CST	Flood Watch	GUM	4 days
Mar 6, 7:06 PM CST	Areal Flood Advisory	GUM	66 min
Mar 6, 7:59 PM CST	Flash Flood Warning	GUM	106 min
Mar 7, 9:47 PM CST	Areal Flood Advisory	GUM	2 hr
Mar 8, 2:54 PM CDT	Areal Flood Advisory	GUM	66 min
Mar 8, 7:02 PM CDT	Areal Flood Advisory	GUM	77 min
Mar 8, 8:16 PM CDT	Areal Flood Advisory	GUM	119 min
Mar 9, 10:09 PM CDT	Areal Flood Advisory	GUM	51 min
Mar 10, 11:36 PM CDT	Areal Flood Advisory	GUM	69 min
Mar 11, 8:41 PM CDT	Areal Flood Advisory	GUM	34 min
Mar 11, 9:00 PM CDT	Areal Flood Advisory	GUM	5 min
Mar 11, 9:10 PM CDT	Areal Flood Advisory	GUM	2 hr
Mar 11, 11:31 PM CDT	Areal Flood Advisory	GUM	89 min
Mar 12, 1:06 AM CDT	Rip Current Statement	GUM	12 days
Mar 12, 1:06 AM CDT	High Surf Advisory	GUM	3 days
Mar 12, 6:14 AM CDT	Areal Flood Advisory	GUM	2 hr
Mar 15, 1:07 AM CDT	Coastal Flood Watch	GUM	36 hr
Mar 15, 1:07 AM CDT	High Surf Warning	GUM	36 hr
Mar 16, 12:45 AM CDT	High Surf Advisory	GUM	13 hr
Mar 16, 1:19 PM CDT	Coastal Flood Watch	GUM	36 hr
Mar 16, 1:19 PM CDT	High Surf Warning	GUM	12 hr
Mar 16, 1:19 PM CDT	High Surf Advisory	GUM	5 days
Mar 24, 8:43 AM CDT	Areal Flood Advisory	GUM	92 min
Mar 24, 11:29 AM CDT	Areal Flood Advisory	GUM	3 hr
Apr 4, 12:57 AM CDT	Rip Current Statement	GUM	8 days
Apr 10, 12:32 AM CDT	Tropical Storm Warning	GUM	6 days
Apr 10, 1:37 AM CDT	High Surf Advisory	GUM	49 hr
Apr 10, 5:05 PM CDT	Flood Watch	GUM	5 days
Apr 10, 8:37 PM CDT	Typhoon Watch	GUM	5 days
Apr 11, 1:33 AM CDT	Coastal Flood Watch	GUM	47 hr
Apr 11, 1:33 AM CDT	High Surf Warning	GUM	7 days
Apr 12, 11:13 AM CDT	Areal Flood Advisory	GUM	32 min
Apr 12, 11:49 AM CDT	Flash Flood Warning	GUM	41 min
Apr 13, 12:54 AM CDT	Coastal Flood Warning	GUM	5 days
Apr 13, 1:34 AM CDT	Areal Flood Advisory	GUM	5 hr
Apr 13, 5:04 PM CDT	Areal Flood Advisory	GUM	4 hr
Apr 13, 9:25 PM CDT	Flash Flood Warning	GUM	13 hr
Apr 14, 2:47 PM CDT	Flash Flood Warning	GUM	3 hr
Apr 15, 10:02 PM CDT	Wind Advisory	GUM	16 hr
Apr 15, 10:24 PM CDT	Coastal Flood Advisory	GUM	70 hr
Apr 15, 10:24 PM CDT	Rip Current Statement	GUM	4 days
Apr 15, 10:24 PM CDT	High Surf Advisory	GUM	4 days
Apr 16, 12:42 AM CDT	Hurricane Local Statement	GUM	24 hr
Apr 28, 12:00 AM CDT	Rip Current Statement	GUM	49 hr
May 4, 1:04 AM CDT	Rip Current Statement	GUM	7 days
May 6, 10:59 AM CDT	High Surf Advisory	GUM	37 hr
May 9, 6:16 PM CDT	Areal Flood Advisory	GUM	59 min
May 13, 2:37 AM CDT	Areal Flood Advisory	GUM	113 min
May 16, 4:48 PM CDT	Rip Current Statement	GUM	4 days
May 23, 1:17 PM CDT	Areal Flood Advisory	GUM	106 min
May 26, 7:56 PM CDT	Areal Flood Advisory	GUM	115 min
Jun 7, 6:51 PM CDT	Tsunami Advisory	HEB	113 min
Jun 7, 7:56 PM CDT	Beach Hazards Statement	GUM	3 hr
Jun 7, 7:56 PM CDT	Rip Current Statement	GUM	3 hr
Jun 18, 3:31 PM CDT	Wind Advisory	GUM	9 hr
Jun 18, 7:43 PM CDT	Rip Current Statement	GUM	6 hr
Jun 25, 9:01 PM CDT	Areal Flood Advisory	GUM	119 min
Jul 2, 11:13 PM CDT	Flood Watch	GUM	4 days
Jul 3, 2:03 AM CDT	Typhoon Watch	GUM	25 hr
Jul 3, 2:48 AM CDT	Coastal Flood Watch	GUM	40 hr
Jul 4, 12:23 AM CDT	Typhoon Warning	GUM	64 hr
Jul 4, 3:40 AM CDT	High Surf Advisory	GUM	15 hr
Jul 4, 6:27 PM CDT	Coastal Flood Warning	GUM	42 hr
Jul 4, 6:27 PM CDT	High Surf Warning	GUM	3 days
Jul 5, 5:14 AM CDT	Areal Flood Advisory	GUM	3 hr
Jul 5, 8:08 AM CDT	Flash Flood Warning	GUM	2 hr
Jul 5, 11:10 AM CDT	Flash Flood Warning	GUM	14 hr
Jul 6, 1:21 AM CDT	Flash Flood Warning	GUM	3 hr
Jul 6, 12:19 PM CDT	Coastal Flood Advisory	GUM	37 hr
Jul 6, 2:16 PM CDT	Wind Advisory	GUM	12 hr
Jul 6, 4:19 PM CDT	Hurricane Local Statement	GUM	10 hr
Jul 7, 12:53 PM CDT	Rip Current Statement	GUM	4 days
Jul 8, 12:55 AM CDT	High Surf Advisory	GUM	4 days
Jul 10, 12:13 AM CDT	Areal Flood Advisory	GUM	2 hr
Jul 10, 12:46 AM CDT	Areal Flood Advisory	GUM	59 min
Jul 10, 1:02 AM CDT	Flash Flood Warning	GUM	88 min
Jul 10, 2:37 AM CDT	Areal Flood Advisory	GUM	53 min
Jul 12, 5:31 PM CDT	Areal Flood Advisory	GUM	119 min
Jul 19, 12:23 AM CDT	Areal Flood Advisory	GUM	3 hr
Jul 21, 11:06 PM CDT	Areal Flood Advisory	GUM	114 min
Jul 23, 9:16 PM CDT	Areal Flood Advisory	GUM	119 min
Aug 1, 2:21 AM CDT	Rip Current Statement	GUM	13 days
Aug 2, 12:29 AM CDT	High Surf Advisory	GUM	12 days
Aug 2, 11:31 AM CDT	Wind Advisory	GUM	49 hr
Aug 5, 7:38 PM CDT	Areal Flood Advisory	GUM	4 hr
Aug 5, 9:48 PM CDT	Flash Flood Warning	GUM	87 min
Aug 6, 3:47 AM CDT	Areal Flood Advisory	GUM	58 min
Aug 18, 2:10 PM CDT	Areal Flood Advisory	GUM	110 min
Aug 18, 7:20 PM CDT	Areal Flood Advisory	GUM	3 hr
Aug 19, 12:05 AM CDT	Flash Flood Warning	GUM	115 min
Aug 20, 1:17 PM CDT	Rip Current Statement	GUM	4 days
Aug 21, 1:07 AM CDT	High Surf Advisory	GUM	4 days
Aug 25, 3:23 PM CDT	Areal Flood Advisory	GUM	67 min
Aug 25, 3:57 PM CDT	Flash Flood Warning	GUM	93 min
Aug 28, 2:56 PM CDT	Areal Flood Advisory	GUM	35 min
Aug 29, 9:34 AM CDT	Areal Flood Advisory	GUM	2 hr
Aug 29, 1:41 PM CDT	Areal Flood Advisory	GUM	117 min
Aug 30, 2:33 AM CDT	Flash Flood Warning	GUM	72 min
Aug 30, 3:47 AM CDT	Areal Flood Advisory	GUM	45 min
Aug 30, 4:35 AM CDT	Flash Flood Warning	GUM	74 min
Aug 30, 8:44 PM CDT	Areal Flood Advisory	GUM	81 min
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	20
Flood Watch	4
Areal Flood Advisory	63
Wind and dust
Wind Advisory	4
Tropical
Tropical Storm Warning	1
Typhoon Warning	1
Typhoon Watch	2
Hurricane Local Statement	2
Coast and beach
Coastal Flood Warning	2
High Surf Warning	5
Coastal Flood Watch	4
Coastal Flood Advisory	2
High Surf Advisory	19
Tsunami Advisory	1
Beach Hazards Statement	1
Coastal Flood Statement	1
Rip Current Statement	20

The busiest days

Days with the most alerts issued, by UTC date.

Nearby

Alerts in force now Tornadoes on record The radar archive 2025

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.