Hawaii and Guam Concerns; Record Warmth Spreads Eastward; Heavy Snow for Sierra-Nevada; Severe Weather for the Plains

A very active spring pattern with tropical concerns across the Pacific. Heavy rainfall will continue to impact Hawaii this weekend. Meanwhile we continue to monitor a developing typhoon that may affect Guam into early next week. For the Lower 48, heavy snow for mountains of California this weekend, increase threat for severe thunderstorms next week for the Plains and record warmth spreads east. Read More >

Marianas Surf Zone Reef Displays
Guam Surf Zones	Rota Surf Zones	Tinian Surf Zones	Saipan Surf Zones

High Surf Warning Criteria (feet)
Location	All Reefs
Guam, Rota, Tinian, Saipan, Palau, Yap, Chuuk, Pohnpei, Kosrae and Majuro	15

High Surf Advisory Criteria (feet)
Location	North Facing	East Facing	South Facing	West Facing
Guam, Rota, Tinian, Saipan, Palau, Yap, Chuuk and Pohnpei	9	12	9	9
Kosrae	9	8	8	9
Majuro	12	12	8	9

Rip Current Risk Criteria (feet) for Guam, Rota, Tinian and Saipan
Rip Risk Level	All Reefs
Low Risk	1 to 4
Moderate Risk	5 to 8
High Risk	≥ 9