338 WGUS56 KMTR 251101 FFWMTR CAC001-013-251400- /O.NEW.KMTR.FF.W.0007.251225T1101Z-251225T1400Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED Flash Flood Warning National Weather Service San Francisco CA 301 AM PST Thu Dec 25 2025 The National Weather Service in San Francisco has issued a * Flash Flood Warning for... Northwestern Alameda County in northern California... Western Contra Costa County in northern California... * Until 600 AM PST. * At 301 AM PST, Doppler radar indicated heavy rain across the warned area. Between 0.5 and 1 inch of rain has fallen. Flash flooding is ongoing or expected to begin shortly. HAZARD...Flash flooding caused by heavy rain. SOURCE...Radar indicated. IMPACT...Flash flooding of small creeks and streams, urban areas, highways, streets and underpasses as well as other poor drainage and low-lying areas. * Some locations that will experience flash flooding include... Oakland, Concord, Berkeley, Richmond, Mountain View, Alameda, San Ramon, Walnut Creek, Danville, Martinez, Pleasant Hill, San Pablo, Lafayette, El Cerrito, Hercules, Albany, Pinole, Orinda, Moraga and Piedmont. PRECAUTIONARY/PREPAREDNESS ACTIONS... Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Be especially cautious at night when it is harder to recognize the dangers of flooding. Be aware of your surroundings and do not drive on flooded roads. && LAT...LON 3790 12233 3790 12232 3791 12239 3797 12243 3795 12240 3801 12237 3801 12230 3805 12226 3802 12215 3805 12209 3778 12195 3774 12221 3779 12225 3780 12234 3781 12232 3782 12231 3782 12233 3783 12230 FLASH FLOOD...RADAR INDICATED $$ KR  698 WWUS56 KMTR 251106 SVSMTR Severe Weather Statement National Weather Service San Francisco CA 306 AM PST Thu Dec 25 2025 CAC081-087-251115- /O.CON.KMTR.SV.W.0021.000000T0000Z-251225T1115Z/ San Mateo CA-Santa Cruz CA- 306 AM PST Thu Dec 25 2025 ...SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 315 AM PST FOR SOUTHEASTERN SAN MATEO AND NORTHWESTERN SANTA CRUZ COUNTIES... At 306 AM PST, a severe thunderstorm was located 7 miles north of Boulder Creek, or 8 miles west of Saratoga, moving northeast at 50 mph. HAZARD...70 mph wind gusts and small hail. SOURCE...Radar indicated. IMPACT...Expect considerable tree damage. Damage is likely to mobile homes, roofs, and outbuildings. Locations impacted include... Boulder Creek. PRECAUTIONARY/PREPAREDNESS ACTIONS... Anyone outdoors should move to shelter inside a well-built structure and stay away from windows. This storm is capable of producing widespread damaging winds. Tornadoes can develop quickly from severe thunderstorms. Seek shelter immediately in an interior room on the lowest floor of a well-built structure. && LAT...LON 3708 12223 3728 12220 3724 12211 3723 12210 3723 12209 3722 12209 3722 12208 3721 12207 3721 12206 3720 12205 3698 12215 TIME...MOT...LOC 1048Z 202DEG 42KT 3705 12227 TORNADO...POSSIBLE THUNDERSTORM DAMAGE THREAT...CONSIDERABLE HAIL THREAT...RADAR INDICATED MAX HAIL SIZE...<1.00 IN WIND THREAT...RADAR INDICATED MAX WIND GUST...70 MPH $$ Behringer  092 WGUS56 KMTR 251111 FFWMTR CAC081-085-251415- /O.NEW.KMTR.FF.W.0008.251225T1111Z-251225T1415Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED Flash Flood Warning National Weather Service San Francisco CA 311 AM PST Thu Dec 25 2025 The National Weather Service in San Francisco has issued a * Flash Flood Warning for... East Central San Mateo County in northern California... Northwestern Santa Clara County in northern California... * Until 615 AM PST. * At 311 AM PST, Doppler radar indicated thunderstorms producing heavy rain across the warned area. Between 0.2 and 1 inch of rain has fallen. Flash flooding is ongoing or expected to begin shortly. HAZARD...Life threatening flash flooding. Thunderstorms producing flash flooding. SOURCE...Radar indicated. IMPACT...Life threatening flash flooding of creeks and streams, urban areas, highways, streets and underpasses. * Some locations that will experience flash flooding include... San Jose, Fremont, Sunnyvale, Santa Clara, Mountain View, Milpitas, Palo Alto, Cupertino, Campbell, Menlo Park, Saratoga, Los Gatos, Los Altos, East Palo Alto, Los Altos Hills, Woodside, Fruitdale, Buena Vista, Sunol-Midtown and Rancho Rinconada Cdp. PRECAUTIONARY/PREPAREDNESS ACTIONS... Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Be especially cautious at night when it is harder to recognize the dangers of flooding. Be aware of your surroundings and do not drive on flooded roads. Please report observed flooding to local emergency services or law enforcement and request they pass this information to the National Weather Service when you can do so safely. && LAT...LON 3747 12212 3746 12210 3747 12207 3746 12205 3746 12195 3747 12195 3723 12164 3709 12184 3714 12199 3717 12203 3719 12203 3721 12206 3722 12208 3728 12215 3738 12223 FLASH FLOOD...RADAR INDICATED FLASH FLOOD DAMAGE THREAT...CONSIDERABLE $$ KR  390 WUUS56 KMTR 251112 SVRMTR CAC001-081-085-087-251145- /O.NEW.KMTR.SV.W.0022.251225T1112Z-251225T1145Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Warning National Weather Service San Francisco CA 312 AM PST Thu Dec 25 2025 The National Weather Service in San Francisco has issued a * Severe Thunderstorm Warning for... South Central Alameda County in northern California... East Central San Mateo County in northern California... Northwestern Santa Clara County in northern California... Northwestern Santa Cruz County in northern California... * Until 345 AM PST. * At 312 AM PST, severe thunderstorms were located along a line from over Los Altos to over Ben Lomond, or along a line from over Los Altos to 9 miles north of Santa Cruz, moving northeast at 60 mph. HAZARD...70 mph wind gusts and small hail. SOURCE...Radar indicated. IMPACT...Expect considerable tree damage. Damage is likely to mobile homes, roofs, and outbuildings. * Locations impacted include... San Jose, Fremont, Hayward, Sunnyvale, Santa Clara, Mountain View, Pleasanton, Union City, Milpitas, Palo Alto, Cupertino, Newark, Campbell, Saratoga, Los Gatos, Los Altos, Scotts Valley, Los Altos Hills, Buena Vista and Fruitdale. PRECAUTIONARY/PREPAREDNESS ACTIONS... Anyone outdoors should move to shelter inside a well-built structure and stay away from windows. These storms are capable of producing widespread damaging winds. Tornadoes can develop quickly from severe thunderstorms. Seek shelter immediately in an interior room on the lowest floor of a well-built structure. Intense thunderstorm lines can produce brief tornadoes and widespread significant wind damage. Although a tornado is not immediately likely, it is best to move to an interior room on the lowest floor of a building. These storms may cause serious injury and significant property damage. Torrential rainfall is also occurring with these storms and may lead to flash flooding. Do not drive your vehicle through flooded roadways. && LAT...LON 3749 12205 3750 12208 3765 12193 3744 12158 3700 12210 3733 12223 3736 12220 3746 12196 3746 12197 3747 12199 3748 12196 3747 12205 TIME...MOT...LOC 1112Z 211DEG 50KT 3736 12210 3728 12202 3711 12206 TORNADO...POSSIBLE THUNDERSTORM DAMAGE THREAT...CONSIDERABLE HAIL THREAT...RADAR INDICATED MAX HAIL SIZE...<1.00 IN WIND THREAT...RADAR INDICATED MAX WIND GUST...70 MPH $$ Behringer  992 WWUS56 KMTR 251113 SVSMTR Severe Weather Statement National Weather Service San Francisco CA 313 AM PST Thu Dec 25 2025 CAC081-087-251123- /O.EXP.KMTR.SV.W.0021.000000T0000Z-251225T1115Z/ San Mateo CA-Santa Cruz CA- 313 AM PST Thu Dec 25 2025 ...SEVERE THUNDERSTORM WARNING WILL EXPIRE AT 315 AM PST FOR SOUTHEASTERN SAN MATEO AND NORTHWESTERN SANTA CRUZ COUNTIES... The storm which prompted the warning has moved out of the area. Therefore, the warning will be allowed to expire. However, gusty winds are still possible with this thunderstorm. && LAT...LON 3708 12223 3728 12220 3724 12211 3723 12210 3723 12209 3722 12209 3722 12208 3721 12207 3721 12206 3720 12205 3698 12215 TIME...MOT...LOC 1106Z 202DEG 42KT 3724 12217 $$ Behringer  569 WWUS56 KMTR 251134 SVSMTR Severe Weather Statement National Weather Service San Francisco CA 334 AM PST Thu Dec 25 2025 CAC081-087-251144- /O.CAN.KMTR.SV.W.0022.000000T0000Z-251225T1145Z/ San Mateo CA-Santa Cruz CA- 334 AM PST Thu Dec 25 2025 ...SEVERE THUNDERSTORM WARNING IS CANCELLED FOR EAST CENTRAL SAN MATEO AND NORTHWESTERN SANTA CRUZ COUNTIES... The storms which prompted the warning have moved out of the area. Therefore, the warning has been cancelled. However, gusty winds are still possible with these thunderstorms. && LAT...LON 3748 12196 3765 12193 3759 12182 3744 12158 3715 12192 TIME...MOT...LOC 1112Z 211DEG 50KT 3737 12210 3728 12202 3711 12205 $$ CAC001-085-251145- /O.CON.KMTR.SV.W.0022.000000T0000Z-251225T1145Z/ Alameda CA-Santa Clara CA- 334 AM PST Thu Dec 25 2025 ...SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 345 AM PST FOR SOUTH CENTRAL ALAMEDA AND NORTH CENTRAL SANTA CLARA COUNTIES... At 334 AM PST, severe thunderstorms were located along a line from over Sunol to over Alum Rock, or along a line from over Pleasanton to near San Jose, moving northeast at 60 mph. HAZARD...70 mph wind gusts and small hail. SOURCE...Radar indicated. IMPACT...Expect considerable tree damage. Damage is likely to mobile homes, roofs, and outbuildings. Locations impacted include... San Jose, Fremont, Hayward, Santa Clara, Pleasanton, Milpitas, Campbell, Los Gatos, East Foothills, Alum Rock, Sunol-Midtown, Seven Trees, Buena Vista, Fruitdale, Sunol and Cambrian Park. PRECAUTIONARY/PREPAREDNESS ACTIONS... Anyone outdoors should move to shelter inside a well-built structure and stay away from windows. These storms are capable of producing widespread damaging winds. Tornadoes can develop quickly from severe thunderstorms. Seek shelter immediately in an interior room on the lowest floor of a well-built structure. Intense thunderstorm lines can produce brief tornadoes and widespread significant wind damage. Although a tornado is not immediately likely, it is best to move to an interior room on the lowest floor of a building. These storms may cause serious injury and significant property damage. Torrential rainfall is also occurring with these storms and may lead to flash flooding. Do not drive your vehicle through flooded roadways. && LAT...LON 3748 12196 3765 12193 3759 12182 3744 12158 3715 12192 TIME...MOT...LOC 1112Z 211DEG 50KT 3737 12210 3728 12202 3711 12205 TORNADO...POSSIBLE THUNDERSTORM DAMAGE THREAT...CONSIDERABLE HAIL THREAT...RADAR INDICATED MAX HAIL SIZE...<1.00 IN WIND THREAT...RADAR INDICATED MAX WIND GUST...70 MPH $$ Behringer  934 WWUS56 KMTR 251145 SVSMTR Severe Weather Statement National Weather Service San Francisco CA 345 AM PST Thu Dec 25 2025 CAC001-085-251155- /O.EXP.KMTR.SV.W.0022.000000T0000Z-251225T1145Z/ Alameda CA-Santa Clara CA- 345 AM PST Thu Dec 25 2025 ...SEVERE THUNDERSTORM WARNING HAS EXPIRED FOR SOUTH CENTRAL ALAMEDA AND NORTH CENTRAL SANTA CLARA COUNTIES... The storms which prompted the warning have moved out of the area. Therefore, the warning has been allowed to expire. However, gusty winds are still possible with these thunderstorms. && LAT...LON 3748 12196 3765 12193 3759 12182 3744 12158 3715 12192 TIME...MOT...LOC 1134Z 212DEG 50KT 3763 12189 3755 12181 3737 12185 $$ Behringer