Severe

Significant threat to life or property

California High Wind Warning | Effective 05/17/2026 02:36

* WHAT...Northwest winds 30 to 50 mph with gusts up to 60 mph expected. Strongest during the overnight hours. * WHERE...Interstate 5 Corridor, Northern Ventura County Mountains, and Southern Ventura County Mountains. * WHEN...Until 9 AM PDT this morning. * IMPACTS...Damaging winds could blow down trees and power lines. Widespread power outages are possible. Travel will be difficult, especially for high profile vehicles. * ADDITIONAL DETAILS...Wind speeds may drop well below warning

California High Wind Warning | Effective 05/17/2026 02:36

* WHAT...Northwest winds 30 to 40 mph with gusts up to 60 mph expected. Strongest during the overnight hours. * WHERE...Santa Barbara County Interior Mountains, Santa Barbara County Southwestern Coast, Santa Ynez Mountains Eastern Range, and Santa Ynez Mountains Western Range. * WHEN...Until 9 AM PDT this morning. * IMPACTS...Damaging winds could blow down trees and power lines. Widespread power outages are possible. Travel will be difficult, especially for high profile vehicles.

Arizona Red Flag Warning | Effective 05/17/2026 01:54

* AFFECTED AREA...Fire Weather Zones 151, 152, 153 and 154. * TIMING...From 11 AM to 11 PM MST Sunday. * WINDS...Southwest 20 to 25 mph with gusts up to 45 mph. * RELATIVE HUMIDITY...As low as 7 percent. * IMPACTS...Any fires that develop or are ongoing will have the potential to spread rapidly. A Red Flag Warning means that critical fire weather conditions are either occurring now...or are expected to develop. A combination of strong winds...low relative humidity...and dry

Arizona Red Flag Warning | Effective 05/17/2026 01:22

* WHAT...Southwest winds 20 to 30 mph with gusts up to 50 mph and relative humidity between 8 and 16 percent. * WHERE...Navajo Nation in Arizona, Little Colorado River Valley, Kaibab Plateau, Marble and Glen Canyons, Grand Canyon Country, Eastern Mogollon Rim, and White Mountains. This includes portions of the Apache-Sitgreaves, Coconino, and Kaibab national forests. * WHEN...From 11 AM MST /noon MDT/ this morning to 8 PM MST /9 PM MDT/ this evening. * IMPACTS...Rapid spread and growth of any new or existing fires.

California Red Flag Warning | Effective 05/17/2026 01:27

* Winds...North winds 20 to 30 mph. Gusts 35 to 45 mph, locally up to 50 mph around the Delta and the western Sacramento Valley. * Humidity...Daytime minimum humidities of 7 to 15%. Overnight maximum relative humidities of 20 to 55%. * Highest Threat...Along and west of the Interstate 5 corridor in the Sacramento Valley. Strongest winds are expected today. * Impacts...The combination of gusty winds and low humidity can cause fire to rapidly grow in size and intensity. Outdoor burning is not recommended.

Missouri Flood Warning | Effective 05/17/2026 01:28

* WHAT...Flooding caused by excessive rainfall is occurring. * WHERE...Northern Daviess County in north central Missouri... Southern Grundy County in north central Missouri... * WHEN...Until noon CDT Sunday. * IMPACTS...Flooding of rivers, creeks, streams, and other low-lying and flood-prone locations is imminent or occurring. * ADDITIONAL DETAILS... - At 326 AM CDT, local law enforcement reported extensive flooding across the warned area. Many roads are closed. Use extreme

Missouri Flood Watch | Effective 05/17/2026 01:34

* WHAT...Flash flooding caused by excessive rainfall continues to be possible. * WHERE...Portions of north central and northwest Missouri, including the following areas, in north central Missouri, Daviess, Grundy, Harrison, Linn, Livingston, Mercer, Putnam and Sullivan. In northwest Missouri, Andrew, Atchison, De Kalb, Gentry, Holt, Nodaway, and Worth. * WHEN...Through Tuesday morning. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations.

Nebraska Severe Thunderstorm Warning | Effective 05/17/2026 01:37

SVRLBF The National Weather Service in North Platte has issued a * Severe Thunderstorm Warning for... Eastern Keith County in southwestern Nebraska... Northwestern Lincoln County in southwestern Nebraska... * Until 400 AM CDT/300 AM MDT/. * At 337 AM CDT/237 AM MDT/, a severe thunderstorm was located near Sutherland Reservoir State Recreation Area, or 24 miles west of North Platte, moving northeast at 35 mph. HAZARD...Quarter size hail. SOURCE...Radar indicated. IMPACT...Damage to vehicles is expected. * Locations impacted include...

Iowa, South Dakota Flash Flood Warning | Effective 05/17/2026 01:08

At 308 AM CDT, Doppler radar and automated rain gauges indicated thunderstorms produced heavy rain earlier this morning across the warned area. Between 2.5 and 3.5 inches of rain fell with these thunderstorms. Additional rainfall amounts up to 0.5 inches are possible in the warned area overnight. Flash flooding is ongoing or expected to begin shortly. HAZARD...Flash flooding caused by slow moving thunderstorms. SOURCE...Radar and automated gauges. IMPACT...Flash flooding of small creeks and streams, urban areas,

New Mexico Red Flag Warning | Effective 05/17/2026 01:15

...RED FLAG WARNING REMAINS IN EFFECT FROM 10 AM TO 9 PM MDT TODAY DUE TO STRONG WINDS AND LOW RELATIVE HUMIDITY FOR PARTS OF WESTERN, MUCH OF CENTRAL, AND ALL EASTERN NEW MEXICO... ...FIRE WEATHER WATCH REMAINS IN EFFECT FROM MONDAY MORNING THROUGH MONDAY EVENING DUE TO STRONG WINDS AND LOW RELATIVE HUMIDITY FOR SOUTHWESTERN, MUCH OF CENTRAL, AND ALL OF EASTERN NEW MEXICO... .Extremely poor humidity recovery observed this morning with many areas only reaching 15 to 25 percent come dawn. More widespread and
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