WWUS86 KHNX 182143 RFWHNX URGENT - FIRE WEATHER MESSAGE National Weather Service Hanford CA 243 PM PDT Mon May 18 2026 CAZ579-580-190300- /O.CON.KHNX.FW.W.0002.000000T0000Z-260519T0300Z/ West Side Hills-San Joaquin Valley- 243 PM PDT Mon May 18 2026 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM PDT THIS EVENING FOR LOW RELATIVE HUMIDITIES FOR THE SAN JOAQUIN VALLEY AND WEST SIDE HILLS ALONG THE COASTAL RANGE... * AFFECTED AREA...Fire weather zone 579 West Side Hills on the Coastal Range. Fire weather zone 580 San Joaquin Valley. * WIND...GUSTING TO 20 MPH. * HUMIDITY...15% OR LESS THROUGH MONDAY EVENING. * HIGHEST THREAT...LOW RELATIVE HUMIDITIES LEADING TO EASIER FIRE STARTS. * IMPACTS...Any fires that develop will likely spread rapidly. Outdoor burning is not recommended. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. A combination of strong winds, low relative humidity, and warm temperatures can contribute to extreme fire behavior. && $$ McCoy