Alert archive / California / Winter Storm Watches in 2021
Winter Storm Watch 2, NWS Eureka, CA
NWS Eureka, CA issued this winter storm watch at Jan 24, 2021, 3:01 PM PST for 5 counties in California. It took effect at Jan 26, 2021, 2:00 PM PST. It was in force for .
The area
The counties it named.
The facts
- Issued
- Jan 24, 2021, 3:01 PM PST (23:01 UTC)
- In effect from
- Jan 26, 2021, 2:00 PM PST
- Expired
- Jan 25, 2021, 3:00 PM PST
- In force
- Issued by
- NWS Eureka, CA
Counties Del Norte County, CA, Humboldt County, CA, Lake County, CA, Mendocino County, CA, Trinity County, CA
The radar
The Eureka (Bunker Hill) radar (KBHX), 75 km from the middle of the area, began a volume at 23:04 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, 11.0 hours before the alert went out and 233 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
- 693 m above ground
- 0-6 km bulk shear
- 39 kt
- 0-1 km storm-relative helicity
- 40 m²/s²
- 0-3 km storm-relative helicity
- 72 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
912 WWUS46 KEKA 242301 WSWEKA URGENT - WINTER WEATHER MESSAGE National Weather Service Eureka CA 301 PM PST Sun Jan 24 2021 ...Light snow expected today... ...Heavy Snow Tuesday afternoon through Wednesday morning... .Snow showers will linger above 3000 ft through this evening, with around 2 inches of additional accumulation possible at Scott Mountain Summit on Hwy 3. A stronger storm system will move through the area starting Tuesday afternoon and persist through Wednesday morning, bringing over a foot of snow to areas between 1500 and 2500 feet. CAZ102-105-106-108-250715- /O.CAN.KEKA.WW.Y.0004.000000T0000Z-210125T0300Z/ /O.NEW.KEKA.WS.A.0002.210126T2200Z-210127T2000Z/ Del Norte Interior-Northern Humboldt Interior- Southern Humboldt Interior-Southern Trinity- 301 PM PST Sun Jan 24 2021 ...WINTER STORM WATCH IN EFFECT FROM TUESDAY AFTERNOON THROUGH WEDNESDAY MORNING... ...WINTER WEATHER ADVISORY IS CANCELLED... * WHAT...Heavy snow possible. Total snow accumulations of up to 24 inches possible. Snow levels around 1500 ft for northern Trinity, Humboldt, and Del Norte interiors, and around 2500-3000 ft for southern Humboldt and Trinity. * WHERE...Del Norte Interior, Northern Humboldt Interior, Southern Humboldt Interior and Southern Trinity. * WHEN...From Tuesday afternoon through Wednesday morning. * IMPACTS...Travel could be very difficult to impossible. The hazardous conditions could impact the morning or evening commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor the latest forecasts for updates on this situation. && $$ CAZ104-250015- /O.CAN.KEKA.WW.Y.0004.000000T0000Z-210125T0300Z/ Southwestern Humboldt- 301 PM PST Sun Jan 24 2021 ...WINTER WEATHER ADVISORY IS CANCELLED... Light snow showers may persist through this evening above 3000 ft. $$ CAZ107-250715- /O.NEW.KEKA.WS.A.0002.210126T2200Z-210127T2000Z/ /O.CON.KEKA.WW.Y.0004.000000T0000Z-210125T0300Z/ Northern Trinity- 301 PM PST Sun Jan 24 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 7 PM PST THIS EVENING ABOVE 2500 FEET... ...WINTER STORM WATCH IN EFFECT FROM TUESDAY AFTERNOON THROUGH WEDNESDAY MORNING... * WHAT...For the Winter Weather Advisory above 2500 feet, snow. Additional snow accumulations of up to two inches at Scott Mountain Summit on Hwy 3. For the Winter Storm Watch, heavy snow possible. Total snow accumulations of 12 to 24 inches possible. * WHERE...Northern Trinity County. * WHEN...For the Winter Weather Advisory, until 7 PM PST this evening. For the Winter Storm Watch, from Tuesday afternoon through Wednesday morning. * IMPACTS...Travel could be very difficult to impossible. The hazardous conditions could impact the morning or evening 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. && $$ CAZ110-111-114-250715- /O.NEW.KEKA.WS.A.0002.210126T2200Z-210127T2000Z/ Northwestern Mendocino Interior-Northeastern Mendocino Interior- Northern Lake County- 301 PM PST Sun Jan 24 2021 ...WINTER STORM WATCH IN EFFECT FROM TUESDAY AFTERNOON THROUGH WEDNESDAY MORNING... * WHAT...Heavy snow possible above 2500 ft. Total snow accumulations of 12 to 24 inches possible. * WHERE...Northwestern Mendocino Interior, Northeastern Mendocino Interior and Northern Lake County. * WHEN...From Tuesday afternoon through Wednesday morning. * IMPACTS...Travel could be very difficult to impossible. The hazardous conditions could impact the morning or evening commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor the latest forecasts for updates on this situation. && $$
3 follow-up statements
712 WWUS46 KEKA 250313 WSWEKA URGENT - WINTER WEATHER MESSAGE National Weather Service Eureka CA 713 PM PST Sun Jan 24 2021 ...Heavy Snow Tuesday afternoon through Wednesday morning... .A stronger storm system will move through the area starting Tuesday afternoon and persist through Wednesday morning, bringing over a foot of snow to areas between 1,500 and 2,500 feet. CAZ107-251230- /O.EXP.KEKA.WW.Y.0004.000000T0000Z-210125T0300Z/ /O.CON.KEKA.WS.A.0002.210126T2200Z-210127T2000Z/ Northern Trinity- 713 PM PST Sun Jan 24 2021 ...WINTER STORM WATCH REMAINS IN EFFECT FROM TUESDAY AFTERNOON THROUGH WEDNESDAY MORNING... ...WINTER WEATHER ADVISORY HAS EXPIRED... * WHAT...Heavy snow possible. Total snow accumulations of 10 to 32 inches possible. Winds could gust as high as 40 mph. * WHERE...Northern Trinity County. * WHEN...From Tuesday afternoon through Wednesday morning. * IMPACTS...Travel could be very difficult to impossible. The hazardous conditions could impact the morning or evening commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor the latest forecasts for updates on this situation. && $$ CAZ102-105-106-108-110-111-114-251230- /O.CON.KEKA.WS.A.0002.210126T2200Z-210127T2000Z/ Del Norte Interior-Northern Humboldt Interior- Southern Humboldt Interior-Southern Trinity- Northwestern Mendocino Interior-Northeastern Mendocino Interior- Northern Lake County- 713 PM PST Sun Jan 24 2021 ...WINTER STORM WATCH REMAINS IN EFFECT FROM TUESDAY AFTERNOON THROUGH WEDNESDAY MORNING... * WHAT...Heavy snow possible. Total snow accumulations of up to 26 inches possible. Winds could gust as high as 35 mph. * WHERE...Southern Trinity, Northeastern Mendocino Interior, Northwestern Mendocino Interior, Del Norte Interior, Northern Humboldt Interior, Southern Humboldt Interior and Northern Lake County Counties. * WHEN...From Tuesday afternoon through Wednesday morning. * IMPACTS...Travel could be very difficult to impossible. The hazardous conditions could impact the morning or evening commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor the latest forecasts for updates on this situation. && $$
371 WWUS46 KEKA 251127 WSWEKA URGENT - WINTER WEATHER MESSAGE National Weather Service Eureka CA 327 AM PST Mon Jan 25 2021 ...Heavy Snow Tuesday afternoon through Wednesday morning... .A strong and cold storm system will move through the area starting Tuesday afternoon and persist through Wednesday morning, bringing significant snow above the snow level. Snow levels will range from the valley floors in northern Trinity county to over 3,000 feet in southern Mendocino and Lake counties. Confidence is still low on the snow levels, monitor future forecast for the latest information. CAZ107-251930- /O.CON.KEKA.WS.A.0002.210126T2200Z-210127T2000Z/ Northern Trinity- 327 AM PST Mon Jan 25 2021 ...WINTER STORM WATCH REMAINS IN EFFECT FROM TUESDAY AFTERNOON THROUGH WEDNESDAY MORNING... * WHAT...Heavy snow possible. Total snow accumulations of 11 to 20 inches possible. Winds could gust as high as 50 mph. * WHERE...Northern Trinity County. This includes Highway 299 and Highway 3 as well as the towns of Weaverville and Trinity Center. * WHEN...From Tuesday afternoon through Wednesday morning. * IMPACTS...Travel could be very difficult to impossible. The hazardous conditions could impact the morning or evening commute. Gusty winds could bring down tree branches. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor the latest forecasts for updates on this situation. && $$ CAZ102-105-251930- /O.CON.KEKA.WS.A.0002.210126T2200Z-210127T2000Z/ Del Norte Interior-Northern Humboldt Interior- 327 AM PST Mon Jan 25 2021 ...WINTER STORM WATCH REMAINS IN EFFECT FROM TUESDAY AFTERNOON THROUGH WEDNESDAY MORNING ABOVE 1500 FEET... * WHAT...Heavy snow possible above 1500 feet. Total snow accumulations of 10 to 20 inches possible. Winds could gust as high as 50 mph. Locally higher snowfall amounts at higher elevations. * WHERE...Del Norte Interior and Northern Humboldt Interior Counties. This includes Highway 299 at Berry and Lord Ellis summits as well Highway 199 at the Collier Tunnel. * WHEN...From Tuesday afternoon through Wednesday morning. * IMPACTS...Travel could be very difficult to impossible. The hazardous conditions could impact the morning or evening commute. Gusty winds could bring down tree branches. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor the latest forecasts for updates on this situation. && $$ CAZ108-251930- /O.CON.KEKA.WS.A.0002.210126T2200Z-210127T2000Z/ Southern Trinity- 327 AM PST Mon Jan 25 2021 ...WINTER STORM WATCH REMAINS IN EFFECT FROM TUESDAY AFTERNOON THROUGH WEDNESDAY MORNING ABOVE 1500 FEET... * WHAT...Heavy snow possible above 1500 feet. Total snow accumulations of 10 to 20 inches possible. Winds could gust as high as 45 mph. * WHERE...Southern Trinity County. This includes Highway 3 and 36 and the town of Hayfork. * WHEN...From Tuesday afternoon through Wednesday morning. * IMPACTS...Travel could be very difficult to impossible. The hazardous conditions could impact the morning or evening commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor the latest forecasts for updates on this situation. && $$ CAZ106-251930- /O.CON.KEKA.WS.A.0002.210126T2200Z-210127T2000Z/ Southern Humboldt Interior- 327 AM PST Mon Jan 25 2021 ...WINTER STORM WATCH REMAINS IN EFFECT FROM TUESDAY AFTERNOON THROUGH WEDNESDAY MORNING ABOVE 2000 FEET... * WHAT...Heavy snow possible above 2000 feet. Total snow accumulations of 10 to 20 inches possible. Winds could gust as high as 50 mph. * WHERE...Southern Humboldt Interior County. This includes Highway 3 near Dinsmore. * WHEN...From Tuesday afternoon through Wednesday morning. * IMPACTS...Travel could be very difficult to impossible. The hazardous conditions could impact the morning or evening commute. Gusty winds could bring down tree branches. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor the latest forecasts for updates on this situation. && $$ CAZ110-111-114-251930- /O.CON.KEKA.WS.A.0002.210126T2200Z-210127T2000Z/ Northwestern Mendocino Interior-Northeastern Mendocino Interior- Northern Lake County- 327 AM PST Mon Jan 25 2021 ...WINTER STORM WATCH REMAINS IN EFFECT FROM TUESDAY AFTERNOON THROUGH WEDNESDAY MORNING ABOVE 2500 FEET... * WHAT...Heavy snow possible above 2500 feet. Total snow accumulations of 15 to 30 inches possible. Winds could gust as high as 45 mph. * WHERE...Northeastern Mendocino Interior, Northwestern Mendocino Interior and Northern Lake County Counties. * WHEN...From Tuesday afternoon through Wednesday morning. * IMPACTS...Travel could be very difficult to impossible. The hazardous conditions could impact the morning or evening commute. Gusty winds could bring down tree branches. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor the latest forecasts for updates on this situation. && $$
294 WWUS46 KEKA 252300 WSWEKA URGENT - WINTER WEATHER MESSAGE National Weather Service Eureka CA 300 PM PST Mon Jan 25 2021 ...Heavy Snow Tuesday afternoon through Wednesday morning... .A strong and cold storm system will move through the area Tuesday afternoon through Wednesday morning, bringing significant snow above the snow level. Snow levels will range from the valley floors in northern Trinity county to over 3,000 feet in southern Mendocino and Lake counties. Confidence is still low on the snow levels, particularly south of Hwy 36. Monitor future forecast for the latest information. CAZ107-260700- /O.UPG.KEKA.WS.A.0002.210126T2200Z-210127T2000Z/ /O.NEW.KEKA.WS.W.0002.210126T2200Z-210127T2000Z/ Northern Trinity- 300 PM PST Mon Jan 25 2021 ...WINTER STORM WARNING IN EFFECT FROM 2 PM TUESDAY TO NOON PST WEDNESDAY... * WHAT...Heavy snow expected. Total snow accumulations of 12 to 24 inches. Winds gusting as high as 50 mph. * WHERE...Northern Trinity County. This includes Highway 299 and Highway 3 as well as the towns of Weaverville and Trinity Center. * WHEN...From 2 PM Tuesday to noon PST Wednesday. * IMPACTS...Travel could be very difficult to impossible. The hazardous conditions could impact the morning or evening commute. Gusty winds could bring down tree branches. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state of California can be obtained by calling 1-800-GAS-ROAD. && $$ CAZ102-105-260700- /O.UPG.KEKA.WS.A.0002.210126T2200Z-210127T2000Z/ /O.NEW.KEKA.WS.W.0002.210126T2200Z-210127T2000Z/ Del Norte Interior-Northern Humboldt Interior- 300 PM PST Mon Jan 25 2021 ...WINTER STORM WARNING IN EFFECT FROM 2 PM TUESDAY TO NOON PST WEDNESDAY ABOVE 1500 FEET... * WHAT...Heavy snow expected above 1500 feet. Total snow accumulations of 10 to 18 inches. Winds gusting as high as 50 mph. * WHERE...Del Norte Interior and Northern Humboldt Interior. This includes Highway 299 at Berry and Lord Ellis summits as well Highway 199 at the Collier Tunnel. * WHEN...From 2 PM Tuesday to noon PST Wednesday. * IMPACTS...Travel could be very difficult to impossible. The hazardous conditions could impact the morning or evening commute. Gusty winds could bring down tree branches. 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. && $$ CAZ108-260700- /O.UPG.KEKA.WS.A.0002.210126T2200Z-210127T2000Z/ /O.NEW.KEKA.WS.W.0002.210126T2200Z-210127T2000Z/ Southern Trinity- 300 PM PST Mon Jan 25 2021 ...WINTER STORM WARNING IN EFFECT FROM 2 PM TUESDAY TO NOON PST WEDNESDAY ABOVE 1500 FEET... * WHAT...Heavy snow expected above 1500 feet. Total snow accumulations of 10 to 20 inches. Winds gusting as high as 45 mph. * WHERE...Southern Trinity County. This includes Highway 3 and 36 and the town of Hayfork. * WHEN...From 2 PM Tuesday to noon PST Wednesday. * IMPACTS...Travel could be very difficult to impossible. The hazardous conditions could impact the morning or evening commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state of California can be obtained by calling 1-800-GAS-ROAD. && $$ CAZ106-260700- /O.UPG.KEKA.WS.A.0002.210126T2200Z-210127T2000Z/ /O.NEW.KEKA.WS.W.0002.210126T2200Z-210127T2000Z/ Southern Humboldt Interior- 300 PM PST Mon Jan 25 2021 ...WINTER STORM WARNING IN EFFECT FROM 2 PM TUESDAY TO NOON PST WEDNESDAY ABOVE 2000 FEET... * WHAT...Heavy snow expected above 2000 feet. Total snow accumulations of 10 to 20 inches. Winds gusting as high as 50 mph. * WHERE...Southern Humboldt Interior. This includes Highway 36 near Dinsmore. * WHEN...From 2 PM Tuesday to noon PST Wednesday. * IMPACTS...Travel could be very difficult to impossible. The hazardous conditions could impact the morning or evening commute. Gusty winds could bring down tree branches. 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. && $$ CAZ110-111-114-260700- /O.UPG.KEKA.WS.A.0002.210126T2200Z-210127T2000Z/ /O.NEW.KEKA.WS.W.0002.210126T2200Z-210127T2000Z/ Northwestern Mendocino Interior-Northeastern Mendocino Interior- Northern Lake County- 300 PM PST Mon Jan 25 2021 ...WINTER STORM WARNING IN EFFECT FROM 2 PM TUESDAY TO NOON PST WEDNESDAY ABOVE 2500 FEET... * WHAT...Heavy snow expected above 2500 feet. Total snow accumulations of 10 to 20 inches. Winds gusting as high as 45 mph. * WHERE...Northwestern Mendocino Interior, Northeastern Mendocino Interior and Northern Lake County. * WHEN...From 2 PM Tuesday to noon PST Wednesday. * IMPACTS...Travel could be very difficult to impossible. The hazardous conditions could impact the morning or evening commute. Gusty winds could bring down tree branches. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state of California can be obtained by calling 1-800-GAS-ROAD. && $$ CAZ115-260700- /O.NEW.KEKA.WW.Y.0005.210126T2200Z-210127T0800Z/ Southern Lake County- 300 PM PST Mon Jan 25 2021 ...WINTER WEATHER ADVISORY IN EFFECT FROM 2 PM TUESDAY TO MIDNIGHT PST TUESDAY NIGHT ABOVE 2500 FEET... * WHAT...Snow expected above 2500 feet. Total snow accumulations of 2 to 4 inches. Winds gusting as high as 50 mph. * WHERE...Southern Lake County County. This includes Hwy 175 near Cobb. * WHEN...From 2 PM Tuesday to midnight PST Tuesday night. * IMPACTS...Travel could be very difficult to impossible. The hazardous conditions could impact the evening commute. Gusty winds could bring down tree branches. 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 |
|---|---|---|---|---|
| Jan 23, 8:31 PM PST | Gale Warning | EKA | 30 hr | |
| Jan 24, 2:42 AM PST | Wind Advisory | EKA | Humboldt, Mendocino | 15 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.