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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 >

At the National Weather Service Office in Grand Rapids, we issue the 1050 MHz tone alert and the SAME tone on NOAA Weather Radio for the following products:

Blizzard Warning Civil Danger Warning Civil Emergency Warning
Flash Flood Warning Earthquake Warning Evacuation Immediate
Severe Thunderstorm Watch Fire Warning Hazardous Materials Warning
Severe Thunderstorm Warning Law Enforcement Warning Local Area Emergency
Tornado Watch Nuclear Power Plant Warning Radiological Hazard Warning
Tornado Warning Shelter In Place Warning Required Weekly Test