Moderate

Possible threat to life or property

Idaho, Oregon Freeze Warning | Effective 04/17/2026 11:44

Public safety alert, emergency alert, and weather alert<br /> Description:<br /> * WHAT...Sub-freezing temperatures as low as 25 to 30. * WHERE...Portions of south central and southwest Idaho and<br /> southeast Oregon. * WHEN...From midnight MDT /11 PM PDT/ tonight to 10 AM MDT /9 AM<br /> PDT/ Saturday. * IMPACTS...Frost and freeze conditions could kill crops, other<br /> sensitive vegetation and possibly damage unprotected outdoor<br /> plumbing. Instruction:<br /> Take steps now to protect tender plants from the cold.

Guam, Northern Mariana Islands High Surf Warning | Effective 04/17/2026 11:03

Public safety alert, emergency alert, and weather alert<br /> Description:<br /> * WHAT...For the High Surf Warning, dangerously large breaking<br /> waves of 11 to 15 feet. For the Coastal Flood Advisory, minor<br /> coastal flooding of 1 to 2 feet. For the High Surf Advisory,<br /> large breaking waves of 10 to 14 feet expected. For the High Rip<br /> Current Risk, dangerous rip currents. * WHERE...South, west and north facing reefs and shorelines of<br /> Guam and Rota. * WHEN...For the High Surf Warning, until 10 AM ChST this morning.<br />

Northern Mariana Islands High Surf Warning | Effective 04/17/2026 11:03

Public safety alert, emergency alert, and weather alert<br /> Description:<br /> * WHAT...For the High Surf Warning, dangerously<br /> large breaking waves of 12 to 17 feet. For the Coastal Flood<br /> Advisory, minor coastal flooding of 1 to 2 feet expected. For the<br /> High Surf Advisory, large breaking waves of 10 to 14 feet<br /> expected. For the High Rip Current Risk, dangerous rip currents. * WHERE...South, west, and north facing reefs of Tinian and Saipan. * WHEN...For the High Surf Warning, until 10 AM ChST this<br />

Northern Mariana Islands Rip Current Statement | Effective 04/17/2026 11:03

Public safety alert, emergency alert, and weather alert<br /> Description:<br /> * WHAT...For the High Surf Warning, dangerously<br /> large breaking waves of 12 to 17 feet. For the Coastal Flood<br /> Advisory, minor coastal flooding of 1 to 2 feet expected. For the<br /> High Surf Advisory, large breaking waves of 10 to 14 feet<br /> expected. For the High Rip Current Risk, dangerous rip currents. * WHERE...South, west, and north facing reefs of Tinian and Saipan. * WHEN...For the High Surf Warning, until 10 AM ChST this<br />

Guam, Northern Mariana Islands Rip Current Statement | Effective 04/17/2026 11:03

Public safety alert, emergency alert, and weather alert<br /> Description:<br /> * WHAT...For the High Surf Warning, dangerously large breaking<br /> waves of 11 to 15 feet. For the Coastal Flood Advisory, minor<br /> coastal flooding of 1 to 2 feet. For the High Surf Advisory,<br /> large breaking waves of 10 to 14 feet expected. For the High Rip<br /> Current Risk, dangerous rip currents. * WHERE...South, west and north facing reefs and shorelines of<br /> Guam and Rota. * WHEN...For the High Surf Warning, until 10 AM ChST this morning.<br />

California Freeze Warning | Effective 04/17/2026 11:09

Public safety alert, emergency alert, and weather alert<br /> Description:<br /> * WHAT...Sub-freezing temperatures as low as 31 expected. * WHERE...Northeastern Trinity, Northwestern and Central Trinity, and<br /> Southern Trinity. * WHEN...From 1 AM to 8 AM PDT Saturday. * IMPACTS...Frost and freeze conditions could kill crops, other<br /> sensitive vegetation and possibly damage unprotected outdoor<br /> plumbing. Instruction:<br /> Take steps now to protect tender plants from the cold.

Montana Special Weather Statement | Effective 04/17/2026 11:10

Public safety alert, emergency alert, and weather alert<br /> Description:<br /> Scattered rain and snow showers will move southward through<br /> Central MT this afternoon. These showers will affect areas around<br /> Choteau, Simms, Great Falls, Monarch and Stanford through the<br /> early afternoon hours. Expect a brief period of reduced visibility as the showers move<br /> through. Most snow accumulations will remain just on grassy<br /> areas. An isolated lightning strike is also possible.

Arizona, California, Nevada Wind Advisory | Effective 04/17/2026 10:52

Public safety alert, emergency alert, and weather alert<br /> Description:<br /> * WHAT...North winds 25 to 35 mph with gusts up to 50 mph. * WHERE...In Arizona, Lake Havasu and Fort Mohave and Lake Mohave -<br /> AZ side. In California, San Bernardino County-Upper Colorado River<br /> Valley. In Nevada, Lake Mohave - NV side. * WHEN...Until 5 PM PDT /5 PM MST/ this afternoon. * IMPACTS...Winds this strong can make driving difficult, especially<br /> for high-profile vehicles, particularly along east-west<br />

Wyoming Winter Weather Advisory | Effective 04/17/2026 10:35

Public safety alert, emergency alert, and weather alert<br /> Description:<br /> * WHAT...Snow. Additional snow accumulations up to one inch. * WHERE...Portions of Carbon and Albany county in south central<br /> Wyoming. * WHEN...Until 3 PM MDT this afternoon. * IMPACTS...Roads, and especially bridges and overpasses, will<br /> likely become slick and hazardous. * ADDITIONAL DETAILS...Rapidly dropping temperatures may lead to a<br /> flash freeze and icy conditions Thursday night into Friday morning. Instruction:<br />
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