Expected

Responsive action SHOULD be taken soon (within next hour)

Alaska Winter Weather Advisory | Effective 04/21/2026 04:59

* WHAT...Snow and blowing snow expected. Total snow accumulations up to 7 inches. Winds gusting as high as 40 mph. Visibility reduced to 1/2 mile or less at times. Ice accumulations of a light glaze. * WHERE...Nunivak Island and western Kuskokwim Delta coast including Toksook Bay. * WHEN...From 4 PM this afternoon to 10 AM AKDT Wednesday. * IMPACTS...Visibilities reduced to one half mile or less due to blowing snow. Travel could be very difficult. * ADDITIONAL DETAILS...A frontal boundary moving northward across

California Wind Advisory | Effective 04/21/2026 04:39

* WHAT...Southwest winds 20 to 30 mph with gusts up to 45 mph expected. * WHERE...Indian Wells Valley and Mojave Desert. * WHEN...From 2 PM this afternoon to 7 AM PDT Wednesday. * IMPACTS...Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. Winds this strong can make driving difficult, especially for high profile vehicles. Use extra caution.

California Wind Advisory | Effective 04/21/2026 04:39

* WHAT...West winds 20 to 30 mph with gusts up to 50 mph expected. * WHERE...Mojave Desert Slopes. * WHEN...From 2 PM this afternoon to 8 PM PDT Wednesday. * IMPACTS...Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. Winds this strong can make driving difficult, especially for high profile vehicles. Use extra caution.

Colorado Red Flag Warning | Effective 04/21/2026 04:02

Wind gusts up to 45 to 55 mph and critical fuels will overcome marginal relative humidity values on Wednesday, leading to widespread critical fire weather conditions in Colorado zones 200 and 202. * AFFECTED AREA...In Colorado, Fire Weather Zone 200 Little Snake Forecast Area and Fire Weather Zone 202 White River Forecast Area. * TIMING...From 10 AM to 9 PM MDT Wednesday. * WINDS...Southwest 25 to 35 mph with gusts up to 55 mph. * RELATIVE HUMIDITY...14 to 19 percent.

Colorado, Wyoming Red Flag Warning | Effective 04/21/2026 04:18

* AFFECTED AREA...Fire Weather Zones 214, 215, 216, 238, 239, 240, 241, 242, 243, 244, 245, 246, 247, 248, 249, 250 and 251. * TIMING...From 10 AM Wednesday to midnight MDT Wednesday night. * WINDS...Southwest 20 to 30 mph with gusts up to 45 mph. * RELATIVE HUMIDITY...As low as 6 percent. * IMPACTS...Conditions will be favorable for rapid fire spread. Avoid outdoor burning and any activity that may produce a spark and start a wildfire. A Red Flag Warning means that critical fire weather conditions

California Wind Advisory | Effective 04/21/2026 03:55

* WHAT...West winds 20 to 30 mph with gusts to 55 mph expected. * WHERE...Apple and Lucerne Valleys and San Diego County Deserts. * WHEN...From 2 PM this afternoon to 7 AM PDT Wednesday. * IMPACTS...Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. Winds this strong can make driving difficult, especially for high profile vehicles. Use extra caution.

California Wind Advisory | Effective 04/21/2026 03:55

* WHAT...West winds 20 to 30 mph with gusts to 55 mph expected. * WHERE...Riverside County Mountains and San Diego County Mountains. * WHEN...From 2 PM this afternoon to 7 AM PDT Wednesday. * IMPACTS...Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. Winds this strong can make driving difficult, especially for high profile vehicles. Use extra caution.

California Wind Advisory | Effective 04/21/2026 03:55

* WHAT...West winds 25 to 35 mph with gusts to 55 mph expected. * WHERE...San Gorgonio Pass near Banning. * WHEN...From 2 PM this afternoon to 7 AM PDT Wednesday. * IMPACTS...Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. Winds this strong can make driving difficult, especially for high profile vehicles. Use extra caution.

California Wind Advisory | Effective 04/21/2026 03:55

* WHAT...Southwest winds 25 to 35 mph with gusts to 65 mph expected. * WHERE...San Bernardino County Mountains. * WHEN...From 2 PM this afternoon to 7 AM PDT Wednesday. * IMPACTS...Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. Winds this strong can make driving difficult, especially for high profile vehicles. Use extra caution.

California Winter Weather Advisory | Effective 04/21/2026 03:06

* WHAT...Snow. Additional snow accumulations 2 to 4 inches. * WHERE...The higher terrain of southern Siskiyou County near the Trinity Alps. This includes Highway 3 south of Callahan. * WHEN...Until 11 AM PDT this morning. * IMPACTS...Travel may be very difficult. The hazardous conditions could impact the Monday evening and Tuesday morning commutes. Gusty winds could bring down tree branches. * ADDITIONAL DETAILS...Visit weather.gov/mfr/winter for snow probabilities.
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