⛈️
High Surf Warning
◍ Guam · USA · updated 10/17/2026, 9:55:00 PM
⏱ In effect until 11:00 PM UTC+10
Severity score
65/100
Confidence
High
Why this matters
* WHAT...For the Coastal Flood Warning, significant coastal flooding expected for south and east facing shorelines. For the High Surf Warning, dangerously large breaking waves up to 30 feet for Guam, 20 to 25 feet for Rota, and 15 to 20 feet for Tinian and Saipan. * WHERE...South and east facing reefs of Guam, Rota, Tinian and Saipan. * WHEN...From 5 PM this afternoon to 4 AM ChST Monday. * IMP
Key stats
Severity
Moderate
Certainty
Likely
Urgency
Expected
Timeline
- High Surf Warning10/17/2026, 9:55:00 PMHigh Surf Warning issued October 18 at 7:55AM ChST until October 19 at 4:00AM ChST by NWS Tiyan GU
Sources & attribution
OfficialNWS NWS Tiyan GUupdated 10/17/2026, 9:55:00 PM
OfficialNWS NWS Juneau AKupdated 10/17/2026, 10:08:00 PM
OfficialNWS NWS Juneau AKupdated 10/17/2026, 10:08:00 PM
OfficialNWS NWS Mount Holly NJupdated 10/17/2026, 9:57:00 PM
OfficialNWS NWS Mount Holly NJupdated 10/17/2026, 9:57:00 PM
OfficialNWS NWS Mount Holly NJupdated 10/17/2026, 9:57:00 PM
OfficialNWS NWS Springfield MOupdated 10/17/2026, 9:21:00 PM
OfficialNWS NWS Marquette MIupdated 10/17/2026, 8:59:00 PM
OfficialNWS NWS Marquette MIupdated 10/17/2026, 8:59:00 PM
OfficialNWS NWS Marquette MIupdated 10/17/2026, 8:59:00 PM
OfficialNWS NWS Duluth MNupdated 10/17/2026, 8:49:00 PM
OfficialNWS NWS Duluth MNupdated 10/17/2026, 8:49:00 PM
OfficialNWS NWS Los Angeles/Oxnard CAupdated 10/17/2026, 8:48:00 PM
OfficialNWS NWS Los Angeles/Oxnard CAupdated 10/17/2026, 8:48:00 PM
OfficialNWS NWS Los Angeles/Oxnard CAupdated 10/17/2026, 8:48:00 PM
OfficialNWS NWS Juneau AKupdated 10/17/2026, 8:04:00 PM
OfficialNWS NWS Juneau AKupdated 10/17/2026, 8:04:00 PM
OfficialNWS NWS Juneau AKupdated 10/17/2026, 8:04:00 PM
OfficialNWS NWS Juneau AKupdated 10/17/2026, 8:04:00 PM
OfficialNWS NWS Juneau AKupdated 10/17/2026, 8:04:00 PM
OfficialNWS NWS Juneau AKupdated 10/17/2026, 8:04:00 PM
OfficialNWS NWS Juneau AKupdated 10/17/2026, 8:04:00 PM
OfficialNWS NWS Juneau AKupdated 10/17/2026, 8:04:00 PM
OfficialNWS NWS Juneau AKupdated 10/17/2026, 8:04:00 PM
OfficialNWS NWS Juneau AKupdated 10/17/2026, 8:04:00 PM
OfficialNWS NWS Juneau AKupdated 10/17/2026, 8:04:00 PM
OfficialNWS NWS Juneau AKupdated 10/17/2026, 8:04:00 PM
OfficialNWS NWS Lake Charles LAupdated 10/17/2026, 7:57:00 PM
OfficialNWS NWS Lake Charles LAupdated 10/17/2026, 7:57:00 PM
OfficialNWS NWS Tallahassee FLupdated 10/17/2026, 7:07:00 PM
OfficialNWS NWS Los Angeles/Oxnard CAupdated 10/17/2026, 7:05:00 PM
OfficialNWS NWS Newport/Morehead City NCupdated 10/17/2026, 7:03:00 PM
OfficialNWS NWS Jackson KYupdated 10/17/2026, 6:41:00 PM
OfficialNWS NWS Melbourne FLupdated 10/17/2026, 6:39:00 PM
OfficialNWS NWS Melbourne FLupdated 10/17/2026, 6:34:00 PM
OfficialNWS NWS Baltimore MD/Washington DCupdated 10/17/2026, 6:31:00 PM
OfficialNWS NWS Newport/Morehead City NCupdated 10/17/2026, 6:14:00 PM
OfficialNWS NWS Houston/Galveston TXupdated 10/17/2026, 6:11:00 PM
OfficialNWS NWS Charleston SCupdated 10/17/2026, 6:10:00 PM
OfficialNWS NWS Greenville-Spartanburg SCupdated 10/17/2026, 5:54:00 PM
OfficialNWS NWS Greenville-Spartanburg SCupdated 10/17/2026, 5:54:00 PM
OfficialNWS NWS Binghamton NYupdated 10/17/2026, 5:03:00 PM
OfficialNWS NWS Miami FLupdated 10/17/2026, 4:39:00 PM
OfficialNWS NWS Little Rock ARupdated 10/17/2026, 4:34:00 PM
OfficialNWS NWS Cheyenne WYupdated 10/17/2026, 4:24:00 PM
OfficialNWS NWS Juneau AKupdated 10/17/2026, 4:15:00 PM
OfficialNWS NWS Juneau AKupdated 10/17/2026, 4:15:00 PM
OfficialNWS NWS Juneau AKupdated 10/17/2026, 4:15:00 PM
OfficialNWS NWS Grand Rapids MIupdated 10/17/2026, 3:30:00 PM
OfficialNWS NWS Tallahassee FLupdated 10/17/2026, 3:27:00 PM
OfficialNWS NWS Tallahassee FLupdated 10/17/2026, 3:27:00 PM
OfficialNWS NWS Grand Rapids MIupdated 10/17/2026, 3:15:00 PM
OfficialNWS NWS Grand Rapids MIupdated 10/17/2026, 3:15:00 PM
OfficialNWS NWS San Diego CAupdated 10/17/2026, 2:31:00 PM
OfficialNWS NWS Honolulu HIupdated 10/17/2026, 1:20:00 PM
OfficialNWS NWS San Francisco CAupdated 10/17/2026, 1:02:00 PM
OfficialNWS NWS Fairbanks AKupdated 10/17/2026, 11:46:00 AM
OfficialNWS NWS Fairbanks AKupdated 10/17/2026, 11:46:00 AM
OfficialNWS NWS Fairbanks AKupdated 10/17/2026, 11:46:00 AM
OfficialNWS NWS Fairbanks AKupdated 10/17/2026, 11:45:00 AM
OfficialNWS NWS Juneau AKupdated 10/17/2026, 11:43:00 AM
OfficialNWS NWS Juneau AKupdated 10/17/2026, 11:43:00 AM
OfficialNWS NWS Juneau AKupdated 10/17/2026, 11:43:00 AM
OfficialNWS NWS Juneau AKupdated 10/17/2026, 11:43:00 AM
OfficialNWS NWS Juneau AKupdated 10/17/2026, 11:43:00 AM
OfficialNWS NWS Anchorage AKupdated 10/17/2026, 11:43:00 AM
OfficialNWS NWS Juneau AKupdated 10/17/2026, 11:43:00 AM
OfficialNWS NWS Juneau AKupdated 10/17/2026, 11:43:00 AM
OfficialNWS NWS Juneau AKupdated 10/17/2026, 11:43:00 AM
OfficialNWS NWS Juneau AKupdated 10/17/2026, 11:43:00 AM
OfficialNWS NWS Juneau AKupdated 10/17/2026, 11:43:00 AM
OfficialNWS NWS Juneau AKupdated 10/17/2026, 11:43:00 AM
OfficialNWS NWS Anchorage AKupdated 10/17/2026, 11:43:00 AM
OfficialNWS NWS Juneau AKupdated 10/17/2026, 11:43:00 AM
OfficialNWS NWS Juneau AKupdated 10/17/2026, 11:43:00 AM
OfficialNWS NWS Juneau AKupdated 10/17/2026, 11:43:00 AM
OfficialNWS NWS Juneau AKupdated 10/17/2026, 11:43:00 AM
OfficialNWS NWS Anchorage AKupdated 10/17/2026, 11:43:00 AM
OfficialNWS NWS Anchorage AKupdated 10/17/2026, 11:43:00 AM
OfficialNWS NWS Anchorage AKupdated 10/17/2026, 11:43:00 AM
OfficialNWS NWS Anchorage AKupdated 10/17/2026, 11:43:00 AM
OfficialNWS NWS Anchorage AKupdated 10/17/2026, 11:43:00 AM
OfficialNWS NWS Anchorage AKupdated 10/17/2026, 11:43:00 AM
OfficialNWS NWS Anchorage AKupdated 10/17/2026, 11:43:00 AM
OfficialNWS NWS Anchorage AKupdated 10/17/2026, 11:43:00 AM
OfficialNWS NWS Anchorage AKupdated 10/17/2026, 11:32:00 AM
OfficialNWS NWS Anchorage AKupdated 10/17/2026, 11:32:00 AM
OfficialNWS NWS Anchorage AKupdated 10/17/2026, 11:32:00 AM
OfficialNWS NWS Anchorage AKupdated 10/17/2026, 11:32:00 AM
OfficialNWS NWS Anchorage AKupdated 10/17/2026, 11:32:00 AM
OfficialNWS NWS Anchorage AKupdated 10/17/2026, 11:32:00 AM
OfficialNWS NWS Anchorage AKupdated 10/17/2026, 11:32:00 AM
OfficialNWS NWS Anchorage AKupdated 10/17/2026, 11:32:00 AM
OfficialNWS NWS Anchorage AKupdated 10/17/2026, 11:32:00 AM
OfficialNWS NWS Anchorage AKupdated 10/17/2026, 11:32:00 AM
OfficialNWS NWS Anchorage AKupdated 10/17/2026, 11:32:00 AM
OfficialNWS NWS Anchorage AKupdated 10/17/2026, 11:32:00 AM
OfficialNWS NWS Anchorage AKupdated 10/17/2026, 11:32:00 AM
OfficialNWS NWS Anchorage AKupdated 10/17/2026, 11:32:00 AM
OfficialNWS NWS Anchorage AKupdated 10/17/2026, 11:32:00 AM
OfficialNWS NWS Anchorage AKupdated 10/17/2026, 11:32:00 AM
OfficialNWS NWS Anchorage AKupdated 10/17/2026, 11:32:00 AM
OfficialNWS NWS Anchorage AKupdated 10/17/2026, 11:32:00 AM
OfficialNWS NWS Anchorage AKupdated 10/17/2026, 11:32:00 AM
OfficialNWS NWS Anchorage AKupdated 10/17/2026, 11:32:00 AM
OfficialNWS NWS Anchorage AKupdated 10/17/2026, 11:32:00 AM
OfficialNWS NWS Anchorage AKupdated 10/17/2026, 11:32:00 AM
OfficialNWS NWS Anchorage AKupdated 10/17/2026, 11:32:00 AM
OfficialNWS NWS Anchorage AKupdated 10/17/2026, 11:32:00 AM
OfficialNWS NWS Anchorage AKupdated 10/17/2026, 11:32:00 AM
OfficialNWS NWS Anchorage AKupdated 10/17/2026, 11:32:00 AM
OfficialNWS NWS Anchorage AKupdated 10/17/2026, 11:32:00 AM
OfficialNWS NWS Jackson MSupdated 10/17/2026, 10:35:00 AM
OfficialNWS NWS Charleston SCupdated 10/17/2026, 8:53:00 AM
OfficialNWS NWS Newport/Morehead City NCupdated 10/17/2026, 7:04:00 AM
OfficialNWS NWS Newport/Morehead City NCupdated 10/17/2026, 7:04:00 AM
OfficialNWS NWS Newport/Morehead City NCupdated 10/17/2026, 7:04:00 AM
OfficialNWS NWS Newport/Morehead City NCupdated 10/17/2026, 6:59:00 AM
OfficialNWS NWS Newport/Morehead City NCupdated 10/17/2026, 6:59:00 AM
OfficialNWS NWS Juneau AKupdated 10/17/2026, 5:37:00 AM
OfficialNWS NWS Juneau AKupdated 10/17/2026, 5:36:00 AM
OfficialNWS NWS Juneau AKupdated 10/17/2026, 5:36:00 AM
OfficialNWS NWS Juneau AKupdated 10/17/2026, 5:36:00 AM
OfficialNWS NWS Juneau AKupdated 10/17/2026, 5:36:00 AM
OfficialNWS NWS Juneau AKupdated 10/17/2026, 5:36:00 AM
OfficialNWS NWS Juneau AKupdated 10/17/2026, 5:36:00 AM
OfficialNWS NWS Juneau AKupdated 10/17/2026, 5:36:00 AM
OfficialNWS NWS Juneau AKupdated 10/17/2026, 5:36:00 AM
OfficialNWS NWS Juneau AKupdated 10/17/2026, 5:36:00 AM
OfficialNWS NWS Juneau AKupdated 10/17/2026, 5:36:00 AM
OfficialNWS NWS Juneau AKupdated 10/17/2026, 5:36:00 AM
OfficialNWS NWS Juneau AKupdated 10/17/2026, 5:36:00 AM
OfficialNWS NWS Juneau AKupdated 10/17/2026, 5:34:00 AM
OfficialNWS NWS Juneau AKupdated 10/17/2026, 5:34:00 AM
OfficialNWS NWS Juneau AKupdated 10/17/2026, 5:34:00 AM
OfficialNWS NWS Juneau AKupdated 10/17/2026, 5:34:00 AM
OfficialNWS NWS Anchorage AKupdated 10/17/2026, 2:38:00 AM
OfficialNWS NWS Anchorage AKupdated 10/17/2026, 2:38:00 AM
OfficialNWS NWS Anchorage AKupdated 10/17/2026, 2:38:00 AM
OfficialNWS NWS Anchorage AKupdated 10/17/2026, 2:38:00 AM
OfficialNWS NWS Anchorage AKupdated 10/17/2026, 2:38:00 AM
OfficialNWS NWS Anchorage AKupdated 10/17/2026, 2:38:00 AM
OfficialNWS NWS Anchorage AKupdated 10/17/2026, 2:38:00 AM
OfficialNWS NWS Anchorage AKupdated 10/17/2026, 2:38:00 AM
OfficialNWS NWS Anchorage AKupdated 10/17/2026, 2:38:00 AM
OfficialNWS NWS Anchorage AKupdated 10/17/2026, 1:17:00 AM
OfficialNWS NWS Anchorage AKupdated 10/17/2026, 1:17:00 AM
OfficialNWS NWS Anchorage AKupdated 10/17/2026, 1:17:00 AM
OfficialNWS NWS Anchorage AKupdated 10/17/2026, 1:17:00 AM
OfficialNWS NWS Anchorage AKupdated 10/17/2026, 1:17:00 AM
OfficialNWS NWS Anchorage AKupdated 10/17/2026, 1:17:00 AM
OfficialNWS NWS Anchorage AKupdated 10/17/2026, 1:17:00 AM
OfficialNWS NWS Anchorage AKupdated 10/17/2026, 1:17:00 AM
OfficialNWS NWS Anchorage AKupdated 10/17/2026, 1:17:00 AM
OfficialNWS NWS San Diego CAupdated 10/17/2026, 1:00:00 AM
OfficialNWS NWS Juneau AKupdated 10/17/2026, 12:47:00 AM
OfficialNWS NWS Juneau AKupdated 10/17/2026, 12:47:00 AM
OfficialNWS NWS Juneau AKupdated 10/17/2026, 12:47:00 AM
OfficialNWS NWS Juneau AKupdated 10/17/2026, 12:47:00 AM
OfficialNWS NWS Fairbanks AKupdated 10/16/2026, 11:49:00 PM
OfficialNWS NWS Fairbanks AKupdated 10/16/2026, 11:49:00 PM
OfficialNWS NWS Juneau AKupdated 10/16/2026, 11:04:00 PM
OfficialNWS NWS Juneau AKupdated 10/16/2026, 11:04:00 PM
OfficialNWS NWS Juneau AKupdated 10/16/2026, 11:04:00 PM
OfficialNWS NWS Juneau AKupdated 10/16/2026, 11:04:00 PM
OfficialNWS NWS Juneau AKupdated 10/16/2026, 10:54:00 PM
OfficialNWS NWS Juneau AKupdated 10/16/2026, 10:54:00 PM
OfficialNWS NWS Juneau AKupdated 10/16/2026, 10:54:00 PM
OfficialNWS NWS Juneau AKupdated 10/16/2026, 10:54:00 PM
OfficialNWS NWS Juneau AKupdated 10/16/2026, 10:54:00 PM
OfficialNWS NWS Juneau AKupdated 10/16/2026, 10:54:00 PM
OfficialNWS NWS Juneau AKupdated 10/16/2026, 10:54:00 PM
OfficialNWS NWS Juneau AKupdated 10/16/2026, 10:54:00 PM
OfficialNWS NWS Juneau AKupdated 10/16/2026, 10:54:00 PM
OfficialNWS NWS Juneau AKupdated 10/16/2026, 10:54:00 PM
OfficialNWS NWS Juneau AKupdated 10/16/2026, 10:54:00 PM
OfficialNWS NWS Juneau AKupdated 10/16/2026, 10:54:00 PM
OfficialNWS NWS Juneau AKupdated 10/16/2026, 10:45:00 PM
OfficialNWS NWS Anchorage AKupdated 10/16/2026, 10:39:00 PM
OfficialNWS NWS Anchorage AKupdated 10/16/2026, 10:39:00 PM
OfficialNWS NWS Anchorage AKupdated 10/16/2026, 10:39:00 PM
OfficialNWS NWS Anchorage AKupdated 10/16/2026, 10:39:00 PM
OfficialNWS NWS Anchorage AKupdated 10/16/2026, 10:39:00 PM
OfficialNWS NWS Anchorage AKupdated 10/16/2026, 10:39:00 PM
OfficialNWS NWS Anchorage AKupdated 10/16/2026, 10:39:00 PM
OfficialNWS NWS Anchorage AKupdated 10/16/2026, 10:39:00 PM
OfficialNWS NWS Anchorage AKupdated 10/16/2026, 10:39:00 PM
OfficialNWS NWS Anchorage AKupdated 10/16/2026, 10:39:00 PM
OfficialNWS NWS Anchorage AKupdated 10/16/2026, 10:39:00 PM
OfficialNWS NWS Anchorage AKupdated 10/16/2026, 10:39:00 PM
OfficialNWS NWS Anchorage AKupdated 10/16/2026, 10:39:00 PM
OfficialNWS NWS Anchorage AKupdated 10/16/2026, 10:39:00 PM
OfficialNWS NWS Anchorage AKupdated 10/16/2026, 10:39:00 PM
OfficialNWS NWS Anchorage AKupdated 10/16/2026, 10:39:00 PM
OfficialNWS NWS Anchorage AKupdated 10/16/2026, 10:39:00 PM
OfficialNWS NWS Anchorage AKupdated 10/16/2026, 10:39:00 PM
OfficialNWS NWS Anchorage AKupdated 10/16/2026, 10:39:00 PM
OfficialNWS NWS Anchorage AKupdated 10/16/2026, 10:39:00 PM
OfficialNWS NWS Anchorage AKupdated 10/16/2026, 10:39:00 PM
OfficialNWS NWS Anchorage AKupdated 10/16/2026, 10:39:00 PM
OfficialNWS NWS Anchorage AKupdated 10/16/2026, 10:39:00 PM
OfficialNWS NWS Juneau AKupdated 10/16/2026, 5:42:00 PM
OfficialNWS NWS Missoula MTupdated 10/16/2026, 4:37:00 PM
OfficialNWS NWS Anchorage AKupdated 10/16/2026, 12:03:00 PM
OfficialNWS NWS Anchorage AKupdated 10/16/2026, 12:03:00 PM
OfficialNWS NWS Anchorage AKupdated 10/16/2026, 12:03:00 PM
OfficialNWS NWS Anchorage AKupdated 10/16/2026, 12:03:00 PM
OfficialNWS NWS Anchorage AKupdated 10/16/2026, 12:03:00 PM
OfficialNWS NWS Anchorage AKupdated 10/16/2026, 12:03:00 PM
OfficialNWS NWS Anchorage AKupdated 10/16/2026, 12:03:00 PM
OfficialNWS NWS Anchorage AKupdated 10/16/2026, 12:03:00 PM
OfficialNWS NWS Anchorage AKupdated 10/16/2026, 12:03:00 PM
OfficialNWS NWS Anchorage AKupdated 10/16/2026, 11:54:00 AM
OfficialNWS NWS Anchorage AKupdated 10/16/2026, 11:54:00 AM
OfficialNWS NWS Anchorage AKupdated 10/16/2026, 11:54:00 AM
OfficialNWS NWS Anchorage AKupdated 10/16/2026, 11:54:00 AM
OfficialNWS NWS Anchorage AKupdated 10/16/2026, 11:54:00 AM
OfficialNWS NWS Anchorage AKupdated 10/16/2026, 11:54:00 AM
OfficialNWS NWS Anchorage AKupdated 10/16/2026, 11:54:00 AM
OfficialNWS NWS Anchorage AKupdated 10/16/2026, 11:54:00 AM
OfficialNWS NWS Anchorage AKupdated 10/16/2026, 11:54:00 AM
OfficialNWS NWS Anchorage AKupdated 10/16/2026, 11:54:00 AM
OfficialNWS NWS Anchorage AKupdated 10/16/2026, 11:54:00 AM
OfficialNWS NWS Anchorage AKupdated 10/16/2026, 11:54:00 AM
OfficialNWS NWS Anchorage AKupdated 10/16/2026, 11:54:00 AM
OfficialNWS NWS Anchorage AKupdated 10/16/2026, 11:54:00 AM
OfficialNWS NWS Tallahassee FLupdated 10/16/2026, 6:55:00 AM
OfficialNWS NWS Tallahassee FLupdated 10/16/2026, 6:55:00 AM
OfficialNWS NWS Tallahassee FLupdated 10/16/2026, 6:55:00 AM
OfficialNWS NWS Mobile ALupdated 10/16/2026, 5:38:00 AM
OfficialNWS NWS Mobile ALupdated 10/16/2026, 5:38:00 AM
OfficialNWS NWS Mobile ALupdated 10/16/2026, 5:38:00 AM
⚠This is an informational severity score, not an official warning. Follow guidance from NWS/NOAA, FEMA (ready.gov), and local emergency management.