Alert archive / California / Winter Storm Watches in 2021
Winter Storm Watch 10, NWS Eureka, CA
NWS Eureka, CA issued this winter storm watch at Dec 24, 2021, 10:01 AM PST for Del Norte County, Humboldt County, Mendocino County, California. It took effect at Dec 26, 2021, 10:00 PM PST. It was in force for .
The area
The counties it named.
The facts
- Issued
- Dec 24, 2021, 10:01 AM PST (18:01 UTC)
- In effect from
- Dec 26, 2021, 10:00 PM PST
- Expired
- Dec 26, 2021, 4:37 AM PST
- In force
- Issued by
- NWS Eureka, CA
Counties Del Norte County, CA, Humboldt County, CA, Mendocino County, CA
The radar
The Eureka (Bunker Hill) radar (KBHX), 47 km from the middle of the area, began a volume at 18:03 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
Medford/Jackson, OR (KMFR), launched 12:00Z, 6.0 hours before the alert went out and 210 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 702 m above ground
- 0-6 km bulk shear
- 53 kt
- 0-1 km storm-relative helicity
- 213 m²/s²
- 0-3 km storm-relative helicity
- 225 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
324 WWUS46 KEKA 241801 WSWEKA URGENT - WINTER WEATHER MESSAGE National Weather Service Eureka CA 1001 AM PST Fri Dec 24 2021 ...HEAVY MOUNTAIN SNOW EXPECTED DURING THE CHRISTMAS HOLIDAY... .A series of cold upper level storm systems will aid in lowering snow levels to as low as 2000 feet by Saturday afternoon, and then occasionally sea level Saturday night through Monday morning. Periods of heavy showers spreading across the cold airmass will favor significant mountain snowfall beginning this afternoon and lasting through Monday morning. Travel across mountain roadways and highway passes will subsequently be difficult if not impossible. CAZ104-250215- /O.EXA.KEKA.WS.W.0010.211224T1800Z-211227T1800Z/ Southwestern Humboldt- 1001 AM PST Fri Dec 24 2021 ...WINTER STORM WARNING IN EFFECT UNTIL 10 AM PST MONDAY... * WHAT...Heavy snow expected. Total snow accumulations of 7 to 24 inches. * WHERE...Southwestern Humboldt County. * WHEN...Until 10 AM PST Monday. * IMPACTS...Travel could be very difficult to impossible. The hazardous conditions could impact the morning or evening commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state of California can be obtained by calling 1-800-GAS-ROAD. && $$ CAZ102-105>108-110-111-114-250215- /O.CON.KEKA.WS.W.0010.000000T0000Z-211227T1800Z/ Del Norte Interior-Northern Humboldt Interior- Southern Humboldt Interior-Northern Trinity-Southern Trinity- Northwestern Mendocino Interior-Northeastern Mendocino Interior- Northern Lake- 1001 AM PST Fri Dec 24 2021 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 10 AM PST MONDAY... * WHAT...Heavy snow expected. Total snow accumulations of 7 to 24 inches. Winds gusting as high as 35 mph. * WHERE...Portions of northwest California. * WHEN...Until 10 AM PST Monday. * IMPACTS...Travel could be very difficult to impossible. The hazardous conditions could impact the morning or evening commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state of California can be obtained by calling 1-800-GAS-ROAD. && $$ CAZ101-103-109-112-113-115-250215- /O.NEW.KEKA.WS.A.0010.211226T0000Z-211227T1800Z/ Coastal Del Norte-Northern Humboldt Coast-Mendocino Coast- Southwestern Mendocino Interior-Southeastern Mendocino Interior- Southern Lake- 1001 AM PST Fri Dec 24 2021 ...WINTER STORM WATCH IN EFFECT FROM SATURDAY AFTERNOON THROUGH MONDAY MORNING... * WHAT...Heavy snow possible. Total snow accumulations of 3 to 9 inches possible. * WHERE...Portions of northwest California. * WHEN...From Saturday afternoon through Monday morning. * IMPACTS...Travel could be very difficult to impossible. The hazardous conditions could impact the morning commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor the latest forecasts for updates on this situation. && $$
7 follow-up statements
855 WWUS46 KEKA 242254 WSWEKA URGENT - WINTER WEATHER MESSAGE National Weather Service Eureka CA 254 PM PST Fri Dec 24 2021 ...HEAVY MOUNTAIN SNOW EXPECTED DURING THE CHRISTMAS HOLIDAY... .A series of cold upper level storm systems will aid in lowering snow levels to as low as 2000 feet this evening, and then occasionally sea level Saturday night through Monday morning. Periods of heavy showers spreading across the cold airmass will favor significant mountain snowfall lasting through Monday morning. Travel across mountain roadways and highway passes will subsequently be difficult if not impossible. CAZ102-104>108-110-111-114-250700- /O.CON.KEKA.WS.W.0010.000000T0000Z-211227T1800Z/ Del Norte Interior-Southwestern Humboldt- Northern Humboldt Interior-Southern Humboldt Interior- Northern Trinity-Southern Trinity-Northwestern Mendocino Interior- Northeastern Mendocino Interior-Northern Lake- 254 PM PST Fri Dec 24 2021 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 10 AM PST MONDAY... * WHAT...Heavy snow. Additional snow accumulations of 7 to 24 inches. * WHERE...Portions of northwest California. * WHEN...Until 10 AM PST Monday. * IMPACTS...Travel could be very difficult to impossible. The hazardous conditions could impact the morning or evening commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state of California can be obtained by calling 1-800-GAS-ROAD. && $$ CAZ101-103-109-112-113-115-250700- /O.CON.KEKA.WS.A.0010.211226T0000Z-211227T1800Z/ Coastal Del Norte-Northern Humboldt Coast-Mendocino Coast- Southwestern Mendocino Interior-Southeastern Mendocino Interior- Southern Lake- 254 PM PST Fri Dec 24 2021 ...WINTER STORM WATCH REMAINS IN EFFECT FROM SATURDAY AFTERNOON THROUGH MONDAY MORNING... * WHAT...Heavy snow possible. Total snow accumulations of 2 to 8 inches possible. * WHERE...Portions of northwest California. * WHEN...From Saturday afternoon through Monday morning. * IMPACTS...Travel could be very difficult to impossible. The hazardous conditions could impact the morning commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor the latest forecasts for updates on this situation. && $$
326 WWUS46 KEKA 250645 WSWEKA URGENT - WINTER WEATHER MESSAGE National Weather Service Eureka CA 1045 PM PST Fri Dec 24 2021 ...HEAVY MOUNTAIN SNOW EXPECTED DURING THE CHRISTMAS HOLIDAY... .A series of cold upper level storm systems will aid in lowering snow levels to as low as 2000 feet this evening, and then occasionally sea level Saturday night through Monday morning. Periods of heavy showers spreading across the cold airmass will favor significant mountain snowfall lasting through Monday morning. Travel across mountain roadways and highway passes will subsequently be difficult if not impossible. CAZ102-104>108-110-111-114-251400- /O.CON.KEKA.WS.W.0010.000000T0000Z-211227T1800Z/ Del Norte Interior-Southwestern Humboldt- Northern Humboldt Interior-Southern Humboldt Interior- Northern Trinity-Southern Trinity-Northwestern Mendocino Interior- Northeastern Mendocino Interior-Northern Lake- 1045 PM PST Fri Dec 24 2021 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 10 AM PST MONDAY... * WHAT...Heavy snow. Additional snow accumulations of 24 to 48 inches. * WHERE...Portions of northwest California. * WHEN...Until 10 AM PST Monday. * IMPACTS...Travel could be very difficult to impossible. The hazardous conditions could impact the morning commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state of California can be obtained by calling 1-800-GAS-ROAD. && $$ CAZ101-103-109-112-113-115-251400- /O.CON.KEKA.WS.A.0010.211226T0000Z-211227T1800Z/ Coastal Del Norte-Northern Humboldt Coast-Mendocino Coast- Southwestern Mendocino Interior-Southeastern Mendocino Interior- Southern Lake- 1045 PM PST Fri Dec 24 2021 ...WINTER STORM WATCH REMAINS IN EFFECT FROM SATURDAY AFTERNOON THROUGH MONDAY MORNING... * WHAT...Heavy snow possible. Total snow accumulations of 1 to 8 inches possible. * WHERE...Portions of northwest California. * WHEN...From Saturday afternoon through Monday morning. * IMPACTS...Travel could be very difficult to impossible. The hazardous conditions could impact the morning commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor the latest forecasts for updates on this situation. && $$
451 WWUS46 KEKA 251337 WSWEKA URGENT - WINTER WEATHER MESSAGE National Weather Service Eureka CA 537 AM PST Sat Dec 25 2021 ...HEAVY MOUNTAIN SNOW EXPECTED DURING THE CHRISTMAS HOLIDAY... .A series of cold upper level storm systems has lowered snow levels to around 2000 feet this morning, and may occasionally drop snow levels to sea level Saturday night through Monday morning. Periods of heavy showers spreading across the cold airmass will favor significant mountain snowfall lasting through Monday morning. Travel across mountain roadways and highway passes will subsequently be difficult if not impossible. CAZ104>106-252145- /O.NEW.KEKA.WW.Y.0024.211226T0300Z-211226T1600Z/ /O.CON.KEKA.WS.W.0010.000000T0000Z-211227T1800Z/ Southwestern Humboldt-Northern Humboldt Interior- Southern Humboldt Interior- 537 AM PST Sat Dec 25 2021 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 10 AM PST MONDAY... ...WINTER WEATHER ADVISORY IN EFFECT FROM 7 PM THIS EVENING TO 8 AM PST SUNDAY... * WHAT...For the Winter Storm Warning, heavy snow. Additional snow accumulations of 24 to 38 inches. For the Winter Weather Advisory, snow expected. Total snow accumulations of 1 to 5 inches. * WHERE...Southwestern Humboldt, Northern Humboldt Interior and Southern Humboldt Interior Counties. * WHEN...For the Winter Storm Warning, until 10 AM PST Monday. For the Winter Weather Advisory, from 7 PM this evening to 8 AM PST Sunday. * IMPACTS...Travel could be very difficult to impossible. The hazardous conditions could impact the morning commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. Slow down and use caution while traveling. The latest road conditions for the state of California can be obtained by calling 1-800-GAS-ROAD. && $$ CAZ110-252145- /O.NEW.KEKA.WW.Y.0024.211226T0600Z-211226T1800Z/ /O.CON.KEKA.WS.W.0010.000000T0000Z-211227T1800Z/ Northwestern Mendocino Interior- 537 AM PST Sat Dec 25 2021 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 10 AM PST MONDAY... ...WINTER WEATHER ADVISORY IN EFFECT FROM 10 PM THIS EVENING TO 10 AM PST SUNDAY... * WHAT...For the Winter Storm Warning, heavy snow. Additional snow accumulations of 5 to 17 inches. For the Winter Weather Advisory, snow expected. Total snow accumulations of 2 to 4 inches. * WHERE...Northwestern Mendocino Interior County. * WHEN...For the Winter Storm Warning, until 10 AM PST Monday. For the Winter Weather Advisory, from 10 PM this evening to 10 AM PST Sunday. * IMPACTS...Travel could be very difficult to impossible. The hazardous conditions could impact the morning commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. Slow down and use caution while traveling. The latest road conditions for the state of California can be obtained by calling 1-800-GAS-ROAD. && $$ CAZ102-107-108-111-114-252145- /O.CON.KEKA.WS.W.0010.000000T0000Z-211227T1800Z/ Del Norte Interior-Northern Trinity-Southern Trinity- Northeastern Mendocino Interior-Northern Lake- 537 AM PST Sat Dec 25 2021 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 10 AM PST MONDAY... * WHAT...Heavy snow. Additional snow accumulations of 24 to 48 inches. * WHERE...Portions of northwest California. * WHEN...Until 10 AM PST Monday. * IMPACTS...Travel could be very difficult to impossible. The hazardous conditions could impact the morning commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state of California can be obtained by calling 1-800-GAS-ROAD. && $$ CAZ101-103-252145- /O.NEW.KEKA.WW.Y.0024.211226T0300Z-211226T1600Z/ /O.EXT.KEKA.WS.A.0010.211227T0000Z-211227T1800Z/ Coastal Del Norte-Northern Humboldt Coast- 537 AM PST Sat Dec 25 2021 ...WINTER WEATHER ADVISORY IN EFFECT FROM 7 PM THIS EVENING TO 8 AM PST SUNDAY... ...WINTER STORM WATCH NOW IN EFFECT FROM SUNDAY AFTERNOON THROUGH MONDAY MORNING... * WHAT...For the Winter Weather Advisory, wet snow expected. Total snow accumulations of up to 2 to 4 inches. For the Winter Storm Watch, heavy snow possible. Total snow accumulations of 1 to 3 inches possible down to sea level. * WHERE...Coastal Del Norte and Northern Humboldt Coast Counties. * WHEN...For the Winter Weather Advisory, from 7 PM this evening to 8 AM PST Sunday. For the Winter Storm Watch, from Sunday afternoon through Monday morning. * IMPACTS...Travel could be very difficult to impossible. The hazardous conditions could impact the morning commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. Monitor the latest forecasts for updates on this situation. The latest road conditions for the state of California can be obtained by calling 1-800-GAS-ROAD. && $$ CAZ109-112-113-115-252145- /O.NEW.KEKA.WW.Y.0024.211226T0600Z-211226T1800Z/ /O.EXT.KEKA.WS.A.0010.211227T0000Z-211227T1800Z/ Mendocino Coast-Southwestern Mendocino Interior- Southeastern Mendocino Interior-Southern Lake- 537 AM PST Sat Dec 25 2021 ...WINTER WEATHER ADVISORY IN EFFECT FROM 10 PM THIS EVENING TO 10 AM PST SUNDAY... ...WINTER STORM WATCH NOW IN EFFECT FROM SUNDAY AFTERNOON THROUGH MONDAY MORNING... * WHAT...For the Winter Weather Advisory, snow expected. Total snow accumulations of up to two inches. For the Winter Storm Watch, heavy snow possible. Total snow accumulations of up to 4 inches possible. * WHERE...Mendocino Coast, Southwestern Mendocino Interior, Southeastern Mendocino Interior and Southern Lake Counties. * WHEN...For the Winter Weather Advisory, from 10 PM this evening to 10 AM PST Sunday. For the Winter Storm Watch, from Sunday afternoon through Monday morning. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the morning commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. Monitor the latest forecasts for updates on this situation. The latest road conditions for the state of California can be obtained by calling 1-800-GAS-ROAD. && $$
693 WWUS46 KEKA 251608 WSWEKA URGENT - WINTER WEATHER MESSAGE National Weather Service Eureka CA 808 AM PST Sat Dec 25 2021 ...HEAVY MOUNTAIN SNOW EXPECTED DURING THE CHRISTMAS HOLIDAY... .A series of cold upper level storm systems has lowered snow levels to around 2000 feet this morning, and may occasionally drop snow levels to sea level Saturday night through Monday morning. Periods of heavy showers spreading across the cold airmass will favor significant mountain snowfall lasting through Monday morning. Travel across mountain roadways and highway passes will subsequently be difficult if not impossible. CAZ104>106-260015- /O.CAN.KEKA.WW.Y.0024.211226T0300Z-211226T1600Z/ /O.CON.KEKA.WS.W.0010.000000T0000Z-211227T1800Z/ Southwestern Humboldt-Northern Humboldt Interior- Southern Humboldt Interior- 808 AM PST Sat Dec 25 2021 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 10 AM PST MONDAY... * WHAT...For the Winter Storm Warning, heavy snow. Additional snow accumulations of 3 to 16 inches. * WHERE...Northern Humboldt Interior, Southwestern Humboldt and Southern Humboldt Interior Counties. * WHEN...Until 10 AM PST Monday. * IMPACTS...Travel could be very difficult to impossible. The hazardous conditions could impact the morning commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state of California can be obtained by calling 1-800-GAS-ROAD. && $$ CAZ110-260015- /O.CAN.KEKA.WW.Y.0024.211226T0600Z-211226T1800Z/ /O.CON.KEKA.WS.W.0010.000000T0000Z-211227T1800Z/ Northwestern Mendocino Interior- 808 AM PST Sat Dec 25 2021 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 10 AM PST MONDAY... * WHAT...Heavy snow. Additional snow accumulations of 3 to 13 inches. * WHERE...Northwestern Mendocino Interior County. * WHEN...Until 10 AM PST Monday. * IMPACTS...Travel could be very difficult to impossible. The hazardous conditions could impact the morning commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state of California can be obtained by calling 1-800-GAS-ROAD. && $$ CAZ102-107-108-111-114-260015- /O.CON.KEKA.WS.W.0010.000000T0000Z-211227T1800Z/ Del Norte Interior-Northern Trinity-Southern Trinity- Northeastern Mendocino Interior-Northern Lake- 808 AM PST Sat Dec 25 2021 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 10 AM PST MONDAY... * WHAT...Heavy snow. Additional snow accumulations of 7 to 14 inches at low elevations and 20 to 38 inches above 2000 feet. * WHERE...Southern Trinity, Del Norte Interior, Northeastern Mendocino Interior, Northern Trinity and Northern Lake Counties. * WHEN...Until 10 AM PST Monday. * IMPACTS...Travel could be very difficult to impossible. The hazardous conditions could impact the morning commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state of California can be obtained by calling 1-800-GAS-ROAD. && $$ CAZ101-103-260015- /O.CON.KEKA.WW.Y.0024.211226T0300Z-211226T1600Z/ /O.CON.KEKA.WS.A.0010.211227T0000Z-211227T1800Z/ Coastal Del Norte-Northern Humboldt Coast- 808 AM PST Sat Dec 25 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 7 PM THIS EVENING TO 8 AM PST SUNDAY... ...WINTER STORM WATCH REMAINS IN EFFECT FROM SUNDAY AFTERNOON THROUGH MONDAY MORNING... * WHAT...For the Winter Weather Advisory, wet snow expected. Total snow accumulations of up to 2 inches. For the Winter Storm Watch, heavy snow possible. Total snow accumulations of 1 to 4 inches possible. * WHERE...Coastal Del Norte and Northern Humboldt Coast Counties. * WHEN...For the Winter Weather Advisory, from 7 PM this evening to 8 AM PST Sunday. For the Winter Storm Watch, from Sunday afternoon through Monday morning. * IMPACTS...Travel could be very difficult to impossible. The hazardous conditions could impact the morning commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. Monitor the latest forecasts for updates on this situation. The latest road conditions for the state of California can be obtained by calling 1-800-GAS-ROAD. && $$ CAZ109-112-113-115-260015- /O.CON.KEKA.WW.Y.0024.211226T0600Z-211226T1800Z/ /O.CON.KEKA.WS.A.0010.211227T0000Z-211227T1800Z/ Mendocino Coast-Southwestern Mendocino Interior- Southeastern Mendocino Interior-Southern Lake- 808 AM PST Sat Dec 25 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 10 PM THIS EVENING TO 10 AM PST SUNDAY... ...WINTER STORM WATCH REMAINS IN EFFECT FROM SUNDAY AFTERNOON THROUGH MONDAY MORNING... * WHAT...For the Winter Weather Advisory, snow expected. Total snow accumulations of up to two inches. For the Winter Storm Watch, heavy snow possible. Total snow accumulations of up to 4 inches possible. * WHERE...Mendocino Coast, Southeastern Mendocino Interior, Southwestern Mendocino Interior and Southern Lake Counties. * WHEN...For the Winter Weather Advisory, from 10 PM this evening to 10 AM PST Sunday. For the Winter Storm Watch, from Sunday afternoon through Monday morning. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the morning commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. Monitor the latest forecasts for updates on this situation. The latest road conditions for the state of California can be obtained by calling 1-800-GAS-ROAD. && $$
325 WWUS46 KEKA 252246 WSWEKA URGENT - WINTER WEATHER MESSAGE National Weather Service Eureka CA 246 PM PST Sat Dec 25 2021 ...HEAVY MOUNTAIN SNOW EXPECTED DURING THE CHRISTMAS HOLIDAY... .A series of cold upper level storm systems has lowered snow levels to around 1500 feet today, and may occasionally drop snow levels to sea level tonight through Monday morning. Periods of heavy showers spreading across the cold airmass will favor significant mountain snowfall lasting through Monday morning. Travel across mountain roadways and highway passes will subsequently be difficult if not impossible. CAZ101-103-260700- /O.UPG.KEKA.WW.Y.0024.211226T0300Z-211226T1600Z/ /O.EXB.KEKA.WS.W.0010.211226T0600Z-211226T1800Z/ /O.EXT.KEKA.WS.A.0010.211227T0600Z-211227T1800Z/ Coastal Del Norte-Northern Humboldt Coast- 246 PM PST Sat Dec 25 2021 ...WINTER STORM WARNING IN EFFECT FROM 10 PM THIS EVENING TO 10 AM PST SUNDAY... ...WINTER STORM WATCH NOW IN EFFECT FROM SUNDAY EVENING THROUGH MONDAY MORNING... * WHAT...For the Winter Storm Warning, heavy snow expected. Total snow accumulations of 2 to 3 inches. For the Winter Storm Watch, heavy snow possible. Total snow accumulations of 2 to 3 inches possible. * WHERE...Coastal Del Norte and Northern Humboldt Coast Counties. * WHEN...For the Winter Storm Warning, from 10 PM this evening to 10 AM PST Sunday. For the Winter Storm Watch, from Sunday evening through Monday morning. * IMPACTS...Travel could be very difficult to impossible. The hazardous conditions could impact the morning commute including highway 101. * ADDITIONAL DETAILS...Snowfall will likely be wet and mixed with rain. Snowfall will be sporadic with accumulation most likely a couple hundred feet above sea level. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. Monitor the latest forecasts for updates on this situation. The latest road conditions for the state of California can be obtained by calling 1-800-GAS-ROAD. && $$ CAZ102-104>108-110-111-114-260700- /O.CON.KEKA.WS.W.0010.000000T0000Z-211227T1800Z/ Del Norte Interior-Southwestern Humboldt- Northern Humboldt Interior-Southern Humboldt Interior- Northern Trinity-Southern Trinity-Northwestern Mendocino Interior- Northeastern Mendocino Interior-Northern Lake- 246 PM PST Sat Dec 25 2021 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 10 AM PST MONDAY... * WHAT...Heavy snow. Additional snow accumulations of 7 to 14 inches at low elevations and 20 to 38 inches above 2000 feet. * WHERE...Portions of northwest California. * WHEN...Until 10 AM PST Monday. * IMPACTS...Travel could be very difficult to impossible. The hazardous conditions will impact highways 299, 101, 199, 36, and 3. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state of California can be obtained by calling 1-800-GAS-ROAD. && $$ CAZ109-112-113-115-260700- /O.EXT.KEKA.WS.A.0010.211227T0600Z-211227T1800Z/ /O.CON.KEKA.WW.Y.0024.211226T0600Z-211226T1800Z/ Mendocino Coast-Southwestern Mendocino Interior- Southeastern Mendocino Interior-Southern Lake- 246 PM PST Sat Dec 25 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 10 PM THIS EVENING TO 10 AM PST SUNDAY... ...WINTER STORM WATCH NOW IN EFFECT FROM SUNDAY EVENING THROUGH MONDAY MORNING... * WHAT...For the Winter Weather Advisory, snow expected. Total snow accumulations of up to 2 inches. For the Winter Storm Watch, heavy snow possible. Total snow accumulations of 2 to 5 inches possible. * WHERE...Mendocino Coast, Southeastern Mendocino Interior, Southwestern Mendocino Interior and Southern Lake Counties. * WHEN...For the Winter Weather Advisory, from 10 PM this evening to 10 AM PST Sunday. For the Winter Storm Watch, from Sunday evening through Monday morning. * IMPACTS...Travel could be very difficult to impossible along portions of highway 101. The hazardous conditions could impact the morning commute. * ADDITIONAL DETAILS...Snowfall will likely be wet and mixed with rain. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. Monitor the latest forecasts for updates on this situation. The latest road conditions for the state of California can be obtained by calling 1-800-GAS-ROAD. && $$
747 WWUS46 KEKA 260645 WSWEKA URGENT - WINTER WEATHER MESSAGE National Weather Service Eureka CA 1045 PM PST Sat Dec 25 2021 ...HEAVY MOUNTAIN SNOW EXPECTED DURING THE CHRISTMAS HOLIDAY... .A series of cold upper level storm systems has lowered snow levels to around 1500 feet today, and may occasionally drop snow levels to sea level tonight through Monday morning. Periods of heavy showers spreading across the cold airmass will favor significant mountain snowfall lasting through Monday morning. Travel across mountain roadways and highway passes will subsequently be difficult if not impossible. CAZ101-103-261445- /O.CON.KEKA.WS.W.0010.000000T0000Z-211226T1800Z/ /O.CON.KEKA.WS.A.0010.211227T0600Z-211227T1800Z/ Coastal Del Norte-Northern Humboldt Coast- 1045 PM PST Sat Dec 25 2021 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 10 AM PST SUNDAY... ...WINTER STORM WATCH REMAINS IN EFFECT FROM SUNDAY EVENING THROUGH MONDAY MORNING... * WHAT...For the Winter Storm Warning, heavy snow. Additional snow accumulations of 1 to 3 inches. For the Winter Storm Watch, heavy snow possible. Total snow accumulations of 1 to 3 inches possible. Winds gusting as high as 30 mph. * WHERE...Coastal Del Norte and Northern Humboldt Coast Counties. * WHEN...For the Winter Storm Warning, until 10 AM PST Sunday. For the Winter Storm Watch, from Sunday evening through Monday morning. * IMPACTS...Travel could be very difficult to impossible. The hazardous conditions could impact the morning commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. Monitor the latest forecasts for updates on this situation. The latest road conditions for the state of California can be obtained by calling 1-800-GAS-ROAD. && $$ CAZ102-104>108-110-111-114-261445- /O.CON.KEKA.WS.W.0010.000000T0000Z-211227T1800Z/ Del Norte Interior-Southwestern Humboldt- Northern Humboldt Interior-Southern Humboldt Interior- Northern Trinity-Southern Trinity-Northwestern Mendocino Interior- Northeastern Mendocino Interior-Northern Lake- 1045 PM PST Sat Dec 25 2021 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 10 AM PST MONDAY... * WHAT...Heavy snow. Additional snow accumulations of 24 to 34 inches. Winds gusting as high as 35 mph. * WHERE...Portions of northwest California. * WHEN...Until 10 AM PST Monday. * IMPACTS...Travel could be very difficult to impossible. The hazardous conditions could impact the morning commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state of California can be obtained by calling 1-800-GAS-ROAD. && $$ CAZ109-112-113-115-261445- /O.CON.KEKA.WW.Y.0024.000000T0000Z-211226T1800Z/ /O.CON.KEKA.WS.A.0010.211227T0600Z-211227T1800Z/ Mendocino Coast-Southwestern Mendocino Interior- Southeastern Mendocino Interior-Southern Lake- 1045 PM PST Sat Dec 25 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 10 AM PST SUNDAY... ...WINTER STORM WATCH REMAINS IN EFFECT FROM SUNDAY EVENING THROUGH MONDAY MORNING... * WHAT...For the Winter Weather Advisory, snow. Additional snow accumulations of up to 3 inches. For the Winter Storm Watch, heavy snow possible. Total snow accumulations of up to 5 inches possible. * WHERE...Mendocino Coast, Southeastern Mendocino Interior, Southwestern Mendocino Interior and Southern Lake Counties. * WHEN...For the Winter Weather Advisory, until 10 AM PST Sunday. For the Winter Storm Watch, from Sunday evening through Monday morning. * IMPACTS...Travel could be very difficult to impossible. The hazardous conditions could impact the morning commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. Monitor the latest forecasts for updates on this situation. The latest road conditions for the state of California can be obtained by calling 1-800-GAS-ROAD. && $$
182 WWUS46 KEKA 261237 WSWEKA URGENT - WINTER WEATHER MESSAGE National Weather Service Eureka CA 437 AM PST Sun Dec 26 2021 ...HEAVY MOUNTAIN SNOW EXPECTED DURING THE CHRISTMAS HOLIDAY... .A series of cold upper level storm systems has lowered snow levels to around 500 to 1000 feet early this morning. These will likely rise later this morning before dropping again tonight through Monday morning. Periods of heavy showers spreading across the cold airmass will favor significant mountain snowfall lasting through Monday morning. Travel across mountain roadways and highway passes will subsequently be difficult if not impossible. CAZ101-103-262045- /O.UPG.KEKA.WS.A.0010.211227T0600Z-211227T1800Z/ /O.NEW.KEKA.WW.Y.0025.211227T0900Z-211227T1800Z/ /O.CON.KEKA.WS.W.0010.000000T0000Z-211226T1800Z/ Coastal Del Norte-Northern Humboldt Coast- 437 AM PST Sun Dec 26 2021 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 10 AM PST THIS MORNING... ...WINTER WEATHER ADVISORY IN EFFECT FROM 1 AM TO 10 AM PST MONDAY... * WHAT...For the Winter Storm Warning, heavy wet snow. Additional snow accumulations of up to two inches. For the Winter Weather Advisory, snow expected. Total snow accumulations of up to two inches. * WHERE...Coastal Del Norte and Northern Humboldt Coast Counties. * WHEN...For the Winter Storm Warning, until 10 AM PST this morning. For the Winter Weather Advisory, from 1 AM to 10 AM PST Monday. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the morning commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. Slow down and use caution while traveling. The latest road conditions for the state of California can be obtained by calling 1-800-GAS-ROAD. && $$ CAZ102-104>108-110-111-114-262045- /O.CON.KEKA.WS.W.0010.000000T0000Z-211227T1800Z/ Del Norte Interior-Southwestern Humboldt- Northern Humboldt Interior-Southern Humboldt Interior- Northern Trinity-Southern Trinity-Northwestern Mendocino Interior- Northeastern Mendocino Interior-Northern Lake- 437 AM PST Sun Dec 26 2021 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 10 AM PST MONDAY... * WHAT...Heavy snow. Additional snow accumulations of 24 to 34 inches. Winds gusting as high as 35 mph. * WHERE...Portions of northwest California. * WHEN...Until 10 AM PST Monday. * IMPACTS...Travel could be very difficult to impossible. The hazardous conditions could impact the morning commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state of California can be obtained by calling 1-800-GAS-ROAD. && $$ CAZ109-112-113-115-262045- /O.UPG.KEKA.WS.A.0010.211227T0600Z-211227T1800Z/ /O.NEW.KEKA.WW.Y.0025.211227T0900Z-211227T1800Z/ /O.CON.KEKA.WW.Y.0024.000000T0000Z-211226T1800Z/ Mendocino Coast-Southwestern Mendocino Interior- Southeastern Mendocino Interior-Southern Lake- 437 AM PST Sun Dec 26 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 10 AM PST THIS MORNING... ...WINTER WEATHER ADVISORY IN EFFECT FROM 1 AM TO 10 AM PST MONDAY... * WHAT...For the first Winter Weather Advisory, wet snow. Additional snow accumulations of up to one inch. For the second Winter Weather Advisory, snow expected. Total snow accumulations of mostly 1 to 2 inches expected, locally up to 3 inches. * WHERE...Mendocino Coast, Southwestern Mendocino Interior, Southeastern Mendocino Interior and Southern Lake Counties. * WHEN...For the first Winter Weather Advisory, until 10 AM PST this morning. For the second Winter Weather Advisory, from 1 AM to 10 AM PST Monday. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the morning commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state of California can be obtained by calling 1-800-GAS-ROAD. && $$
The office that day
Everything else NWS Eureka, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 24, 2:53 AM PST | Gale Warning | EKA | 12 hr |
Nearby
Winter Storm Watches in California, 2021Every winter storm watch in 2021
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.