Alert archive / California / Winter Storm Warnings in 2025
Winter Storm Warning 7, NWS Eureka, CA
NWS Eureka, CA issued this winter storm warning at Mar 13, 2025, 10:30 AM PDT for Trinity County, California. It took effect at Mar 14, 2025, 3:00 AM PDT. It was in force for 14 hr. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Mar 13, 2025, 10:30 AM PDT (17:30 UTC)
- In effect from
- Mar 14, 2025, 3:00 AM PDT
- Expired
- Mar 14, 2025, 5:00 PM PDT
- In force
- 14 hr
- Issued by
- NWS Eureka, CA
County Trinity County, CA
The radar
The Eureka (Bunker Hill) radar (KBHX), 101 km from the middle of the area, began a volume at 17:31 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, 5.5 hours before the alert went out and 193 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
- 788 m above ground
- 0-6 km bulk shear
- 30 kt
- 0-1 km storm-relative helicity
- 79 m²/s²
- 0-3 km storm-relative helicity
- 95 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
156 WWUS46 KEKA 131730 WSWEKA URGENT - WINTER WEATHER MESSAGE National Weather Service Eureka CA 1030 AM PDT Thu Mar 13 2025 CAZ107-108-140130- /O.UPG.KEKA.WS.A.0006.250314T0800Z-250315T0600Z/ /O.NEW.KEKA.WS.W.0007.250314T1000Z-250315T0000Z/ /O.CON.KEKA.WW.Y.0005.000000T0000Z-250314T0000Z/ Northern Trinity-Southern Trinity- Including Hwy 3-Scott Mountain, Hayfork, Hwy 36-South Fork Mountain, Hwy 299-Buckhorn Summit, Hyampom, Big Bar, Trinity Center, Hwy 299-Oregon Mountain, Weaverville, Ruth, Hwy 3-Hayfork Summit, and Forest Glen 1030 AM PDT Thu Mar 13 2025 ...WINTER STORM WARNING IN EFFECT FROM 3 AM TO 5 PM PDT FRIDAY... ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 PM PDT THIS AFTERNOON... * WHAT...For the Winter Weather Advisory, snow. Additional snow accumulations up to one inch. For the Winter Storm Warning, heavy snow expected. Total snow accumulations between 4 and 11 inches. Winds gusting as high as 35 mph. * WHERE...Trinity County. * WHEN...For the Winter Weather Advisory, until 5 PM PDT this afternoon. For the Winter Storm Warning, from 3 AM to 5 PM PDT Friday. * IMPACTS...Travel could be very difficult. Roads, and especially bridges and overpasses, will likely become slick and hazardous. 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 you are calling from can be obtained by calling 5 1 1. Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. Persons are urged to stay indoors until conditions improve. If you must go outside, dress in layers. Several layers of clothes will keep you warmer than a single heavy coat. Cover exposed skin to reduce your risk of frostbite or hypothermia. Gloves, a scarf, and a hat will keep you from losing your body heat. Be prepared for slippery roads. Slow down and use caution while driving. If you are going outside, watch your first few steps taken on stairs, sidewalks, and driveways. These surfaces could be icy and slippery, increasing your risk of a fall and injury. && $$ CAZ102-105-140130- /O.CON.KEKA.WW.Y.0005.000000T0000Z-250314T0000Z/ /O.CON.KEKA.WS.A.0006.250314T0600Z-250315T0600Z/ Del Norte Interior-Northern Humboldt Interior- Including Hoopa, Bald Hills Rd, Hwy 101-Prairie Creek Summit, Hwy 199-Collier Tunnel, Gasquet, Hwy 299-Berry Summit, Willow Creek, and Orleans 1030 AM PDT Thu Mar 13 2025 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 PM PDT THIS AFTERNOON ABOVE 2000 FEET... ...WINTER STORM WATCH REMAINS IN EFFECT FROM THIS EVENING THROUGH FRIDAY EVENING ABOVE 2500 FEET... * WHAT...For the Winter Weather Advisory ABOVE 2000 FEET, snow. Additional snow accumulations up to one inch. For the Winter Storm Watch ABOVE 2500 FEET, heavy snow possible. Total snow accumulations up to 5 inches possible. Winds could gust as high as 50 mph. * WHERE...Del Norte Interior and Northern Humboldt Interior. * WHEN...For the Winter Weather Advisory, until 5 PM PDT this afternoon. For the Winter Storm Watch, from this evening through Friday evening. * IMPACTS...Travel could be very difficult. Tire chains may be necessary if travelling through mountain passes. Gusty winds could bring down tree branches. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. Monitor the latest forecasts for updates on this situation. && $$ CAZ111-114-140130- /O.CON.KEKA.WS.A.0006.250314T0600Z-250315T0600Z/ Northeastern Mendocino Interior-Northern Lake- Including Covelo and Gravelly Valley Airport 1030 AM PDT Thu Mar 13 2025 ...WINTER STORM WATCH REMAINS IN EFFECT FROM THIS EVENING THROUGH FRIDAY EVENING... * WHAT...Heavy snow possible. Total snow accumulations up to 6 inches possible. Winds could gust as high as 45 mph. * WHERE...Northeastern Mendocino Interior and Northern Lake. * WHEN...From this evening through Friday evening. * IMPACTS...Travel could be very difficult. Gusty winds could bring down tree branches. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor the latest forecasts for updates on this situation. && $$ CAZ110-115-140130- /O.CON.KEKA.WS.A.0006.250314T1200Z-250314T2000Z/ Northwestern Mendocino Interior-Southern Lake- Including Laytonville, Lakeport, Legget, Hwy 101-Rattlesnake Summit, Oasis, Hwy 101-Ridgewood Summit, Middletown, Cobb, Knobcone Camp, Potter Valley, Clearlake, Hidden Valley Lake, and Willits 1030 AM PDT Thu Mar 13 2025 ...WINTER STORM WATCH REMAINS IN EFFECT FROM LATE TONIGHT THROUGH FRIDAY AFTERNOON... * WHAT...Heavy wet snow possible. Total snow accumulations up to 4 inches possible. Winds could gust as high as 45 mph. * WHERE...Northwestern Mendocino Interior and Southern Lake. * WHEN...From late tonight through Friday afternoon. * IMPACTS...Plan on slippery road conditions. The hazardous conditions could impact the Friday morning commute. Gusty winds could bring down tree branches. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor the latest forecasts for updates on this situation. && $$ For hazard areas see https://www.wrh.noaa.gov/map/?wfo=eka DB
8 follow-up statements
187 WWUS46 KEKA 131858 WSWEKA URGENT - WINTER WEATHER MESSAGE National Weather Service Eureka CA 1158 AM PDT Thu Mar 13 2025 CAZ107-108-140300- /O.CAN.KEKA.WW.Y.0005.000000T0000Z-250314T0000Z/ /O.CON.KEKA.WS.W.0007.250314T1000Z-250315T0000Z/ Northern Trinity-Southern Trinity- Including Hwy 3-Scott Mountain, Hayfork, Hwy 36-South Fork Mountain, Hwy 299-Buckhorn Summit, Hyampom, Big Bar, Trinity Center, Hwy 299-Oregon Mountain, Weaverville, Ruth, Hwy 3-Hayfork Summit, and Forest Glen 1158 AM PDT Thu Mar 13 2025 ...WINTER WEATHER ADVISORY IS CANCELLED... ...WINTER STORM WARNING REMAINS IN EFFECT FROM 3 AM TO 5 PM PDT FRIDAY... * WHAT...Heavy snow expected. Total snow accumulations between 5 and 11 inches. * WHERE...Trinity County. * WHEN...From 3 AM to 5 PM PDT Friday. * IMPACTS...Travel could be very difficult. 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 you are calling from can be obtained by calling 5 1 1. && $$ CAZ102-105-140300- /O.CAN.KEKA.WW.Y.0005.000000T0000Z-250314T0000Z/ /O.CON.KEKA.WS.A.0006.250314T0600Z-250315T0600Z/ Del Norte Interior-Northern Humboldt Interior- Including Hoopa, Bald Hills Rd, Hwy 101-Prairie Creek Summit, Hwy 199-Collier Tunnel, Gasquet, Hwy 299-Berry Summit, Willow Creek, and Orleans 1158 AM PDT Thu Mar 13 2025 ...WINTER WEATHER ADVISORY IS CANCELLED... ...WINTER STORM WATCH REMAINS IN EFFECT FROM 11 PM PDT THIS EVENING THROUGH FRIDAY EVENING ABOVE 2500 FEET... * WHAT...Heavy snow possible ABOVE 2500 FEET. Total snow accumulations up to 5 inches possible. Winds could gust as high as 45 mph. * WHERE...Del Norte Interior and Northern Humboldt Interior. * WHEN...From 11 PM PDT this evening through Friday evening. * IMPACTS...Travel could be very difficult. Tire chains may be necessary if travelling through mountain passes. Gusty winds could bring down tree branches. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor the latest forecasts for updates on this situation. && $$ CAZ111-114-140300- /O.CON.KEKA.WS.A.0006.250314T0600Z-250315T0600Z/ Northeastern Mendocino Interior-Northern Lake- Including Covelo and Gravelly Valley Airport 1158 AM PDT Thu Mar 13 2025 ...WINTER STORM WATCH REMAINS IN EFFECT FROM 11 PM PDT THIS EVENING THROUGH FRIDAY EVENING... * WHAT...Heavy snow possible. Total snow accumulations up to 6 inches possible. Winds could gust as high as 35 mph. * WHERE...Northeastern Mendocino Interior and Northern Lake. * WHEN...From 11 PM PDT this evening through Friday evening. * IMPACTS...Travel could be very difficult. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor the latest forecasts for updates on this situation. && $$ CAZ110-115-140300- /O.CON.KEKA.WS.A.0006.250314T1200Z-250314T2000Z/ Northwestern Mendocino Interior-Southern Lake- Including Laytonville, Lakeport, Legget, Hwy 101-Rattlesnake Summit, Oasis, Hwy 101-Ridgewood Summit, Middletown, Cobb, Knobcone Camp, Potter Valley, Clearlake, Hidden Valley Lake, and Willits 1158 AM PDT Thu Mar 13 2025 ...WINTER STORM WATCH REMAINS IN EFFECT FROM LATE TONIGHT THROUGH FRIDAY AFTERNOON... * WHAT...Heavy wet snow possible. Total snow accumulations up to two inches possible. Winds could gust as high as 35 mph. * WHERE...Northwestern Mendocino Interior and Southern Lake. * WHEN...From late tonight through Friday afternoon. * IMPACTS...Plan on slippery road conditions. The hazardous conditions could impact the Friday morning commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor the latest forecasts for updates on this situation. && $$ For hazard areas see https://www.wrh.noaa.gov/map/?wfo=eka DB
918 WWUS46 KEKA 131922 WSWEKA URGENT - WINTER WEATHER MESSAGE National Weather Service Eureka CA 1222 PM PDT Thu Mar 13 2025 CAZ107-108-140330- /O.CON.KEKA.WS.W.0007.250314T1000Z-250315T0000Z/ Northern Trinity-Southern Trinity- Including Hwy 3-Scott Mountain, Hayfork, Hwy 36-South Fork Mountain, Hwy 299-Buckhorn Summit, Hyampom, Big Bar, Trinity Center, Hwy 299-Oregon Mountain, Weaverville, Ruth, Hwy 3-Hayfork Summit, and Forest Glen 1222 PM PDT Thu Mar 13 2025 ...WINTER STORM WARNING REMAINS IN EFFECT FROM 3 AM TO 5 PM PDT FRIDAY... * WHAT...Heavy snow expected. Total snow accumulations between 5 and 11 inches. * WHERE...Trinity County. * WHEN...From 3 AM to 5 PM PDT Friday. * IMPACTS...Travel could be very difficult. 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 you are calling from can be obtained by calling 5 1 1. && $$ CAZ111-114-140330- /O.UPG.KEKA.WS.A.0006.250314T0600Z-250315T0600Z/ /O.NEW.KEKA.WW.Y.0006.250314T0900Z-250314T1800Z/ Northeastern Mendocino Interior-Northern Lake- Including Covelo and Gravelly Valley Airport 1222 PM PDT Thu Mar 13 2025 ...WINTER WEATHER ADVISORY IN EFFECT FROM 2 AM TO 11 AM PDT FRIDAY ABOVE 1500 FEET... * WHAT...Snow expected Above 1500 feet. Total snow accumulations 1 to 4 inches. Winds gusting as high as 35 mph. * WHERE...Northeastern Mendocino Interior and Northern Lake. * WHEN...From 2 AM to 11 AM PDT Friday. * IMPACTS...Travel could be very difficult. Tire chains may be necessary if travelling through mountain passes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ CAZ110-115-140330- /O.UPG.KEKA.WS.A.0006.250314T1200Z-250314T2000Z/ /O.NEW.KEKA.WW.Y.0006.250314T0900Z-250314T1800Z/ Northwestern Mendocino Interior-Southern Lake- Including Laytonville, Lakeport, Legget, Hwy 101-Rattlesnake Summit, Oasis, Hwy 101-Ridgewood Summit, Middletown, Cobb, Knobcone Camp, Potter Valley, Clearlake, Hidden Valley Lake, and Willits 1222 PM PDT Thu Mar 13 2025 ...WINTER WEATHER ADVISORY IN EFFECT FROM 2 AM TO 11 AM PDT FRIDAY ABOVE 1500 FEET... * WHAT...Wet snow expected Above 1500 feet. Total snow accumulations 1 to 4 inches. Winds gusting as high as 35 mph. * WHERE...Northwestern Mendocino Interior and Southern Lake. * WHEN...From 2 AM to 11 AM PDT Friday. * IMPACTS...Plan on slippery road conditions. The hazardous conditions could impact the Friday morning commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ CAZ102-105-140330- /O.EXT.KEKA.WS.A.0006.250314T1000Z-250314T1800Z/ Del Norte Interior-Northern Humboldt Interior- Including Hoopa, Bald Hills Rd, Hwy 101-Prairie Creek Summit, Hwy 199-Collier Tunnel, Gasquet, Hwy 299-Berry Summit, Willow Creek, and Orleans 1222 PM PDT Thu Mar 13 2025 ...WINTER STORM WATCH NOW IN EFFECT FROM LATE TONIGHT THROUGH FRIDAY MORNING ABOVE 1500 FEET... * WHAT...Heavy snow possible ABOVE 1500 FEET. Total snow accumulations up to 4 inches possible. Winds could gust as high as 45 mph. * WHERE...Del Norte Interior and Northern Humboldt Interior. * WHEN...From late tonight through Friday morning. * IMPACTS...Travel could be very difficult. Tire chains may be necessary if travelling through mountain passes. Gusty winds could bring down tree branches. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor the latest forecasts for updates on this situation. && $$ For hazard areas see https://www.wrh.noaa.gov/map/?wfo=eka DB
903 WWUS46 KEKA 131927 WSWEKA URGENT - WINTER WEATHER MESSAGE National Weather Service Eureka CA 1227 PM PDT Thu Mar 13 2025 CAZ107-108-140330- /O.CON.KEKA.WS.W.0007.250314T1000Z-250315T0000Z/ Northern Trinity-Southern Trinity- Including Hwy 3-Scott Mountain, Hayfork, Hwy 36-South Fork Mountain, Hwy 299-Buckhorn Summit, Hyampom, Big Bar, Trinity Center, Hwy 299-Oregon Mountain, Weaverville, Ruth, Hwy 3-Hayfork Summit, and Forest Glen 1227 PM PDT Thu Mar 13 2025 ...WINTER STORM WARNING REMAINS IN EFFECT FROM 3 AM TO 5 PM PDT FRIDAY ABOVE 1500 FEET... * WHAT...Heavy snow expected. Total snow accumulations between 5 and 11 inches. * WHERE...Trinity County. * WHEN...From 3 AM to 5 PM PDT Friday. * IMPACTS...Travel could be very difficult. 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 you are calling from can be obtained by calling 5 1 1. && $$ CAZ102-105-140330- /O.UPG.KEKA.WS.A.0006.250314T1000Z-250314T1800Z/ /O.EXB.KEKA.WW.Y.0006.250314T1100Z-250314T1800Z/ Del Norte Interior-Northern Humboldt Interior- Including Hoopa, Bald Hills Rd, Hwy 101-Prairie Creek Summit, Hwy 199-Collier Tunnel, Gasquet, Hwy 299-Berry Summit, Willow Creek, and Orleans 1227 PM PDT Thu Mar 13 2025 ...WINTER WEATHER ADVISORY IN EFFECT FROM 4 AM TO 11 AM PDT FRIDAY ABOVE 1500 FEET... * WHAT...Snow expected ABOVE 1500 FEET. Total snow accumulations between 2 and 4 inches. * WHERE...Del Norte Interior and Northern Humboldt Interior. * WHEN...From 4 AM to 11 AM PDT Friday. * IMPACTS...Travel could be very difficult on highways 299 and 199. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ CAZ110-115-140330- /O.CON.KEKA.WW.Y.0006.250314T0900Z-250314T1800Z/ Northwestern Mendocino Interior-Southern Lake- Including Laytonville, Lakeport, Legget, Hwy 101-Rattlesnake Summit, Oasis, Hwy 101-Ridgewood Summit, Middletown, Cobb, Knobcone Camp, Potter Valley, Clearlake, Hidden Valley Lake, and Willits 1227 PM PDT Thu Mar 13 2025 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 2 AM TO 11 AM PDT FRIDAY ABOVE 1500 FEET... * WHAT...Wet snow expected Above 1500 feet. Total snow accumulations 1 to 4 inches. Winds gusting as high as 35 mph. * WHERE...Northwestern Mendocino Interior and Southern Lake. * WHEN...From 2 AM to 11 AM PDT Friday. * IMPACTS...Plan on slippery road conditions. The hazardous conditions could impact the Friday morning commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ CAZ111-114-140330- /O.CON.KEKA.WW.Y.0006.250314T0900Z-250314T1800Z/ Northeastern Mendocino Interior-Northern Lake- Including Covelo and Gravelly Valley Airport 1227 PM PDT Thu Mar 13 2025 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 2 AM TO 11 AM PDT FRIDAY ABOVE 1500 FEET... * WHAT...Snow expected Above 1500 feet. Total snow accumulations 1 to 4 inches. Winds gusting as high as 35 mph. * WHERE...Northeastern Mendocino Interior and Northern Lake. * WHEN...From 2 AM to 11 AM PDT Friday. * IMPACTS...Travel could be very difficult. Tire chains may be necessary if travelling through mountain passes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ For hazard areas see https://www.wrh.noaa.gov/map/?wfo=eka DB
536 WWUS46 KEKA 140331 WSWEKA URGENT - WINTER WEATHER MESSAGE National Weather Service Eureka CA 831 PM PDT Thu Mar 13 2025 CAZ107-108-141145- /O.CON.KEKA.WS.W.0007.250314T1000Z-250315T0000Z/ Northern Trinity-Southern Trinity- Including Trinity Center, Hwy 3-Scott Mountain, Weaverville, Big Bar, Hwy 299-Buckhorn Summit, Hyampom, Ruth, Forest Glen, Hwy 3-Hayfork Summit, Hwy 299-Oregon Mountain, Hwy 36-South Fork Mountain, and Hayfork 831 PM PDT Thu Mar 13 2025 ...WINTER STORM WARNING REMAINS IN EFFECT FROM 3 AM TO 5 PM PDT FRIDAY... * WHAT...Heavy snow expected. Total snow accumulations between 5 and 11 inches. * WHERE...Trinity County. * WHEN...From 3 AM to 5 PM PDT Friday. * IMPACTS...Travel could be very difficult. 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 you are calling from can be obtained by calling 5 1 1. && $$ CAZ110-115-141145- /O.CON.KEKA.WW.Y.0006.250314T0900Z-250314T1800Z/ Northwestern Mendocino Interior-Southern Lake- Including Clearlake, Hwy 101-Rattlesnake Summit, Lakeport, Oasis, Hwy 101-Ridgewood Summit, Cobb, Willits, Hidden Valley Lake, Knobcone Camp, Legget, Middletown, Laytonville, and Potter Valley 831 PM PDT Thu Mar 13 2025 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 2 AM TO 11 AM PDT FRIDAY ABOVE 1500 FEET... * WHAT...Wet snow expected Above 1500 feet. Total snow accumulations 1 to 4 inches. Winds gusting as high as 35 mph. * WHERE...Northwestern Mendocino Interior and Southern Lake. * WHEN...From 2 AM to 11 AM PDT Friday. * IMPACTS...Plan on slippery road conditions. The hazardous conditions could impact the Friday morning commute. * ADDITIONAL DETAILS...Travel could be difficult on highways 101 north of Ukiah and 175 at higher elevations. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ CAZ111-114-141145- /O.CON.KEKA.WW.Y.0006.250314T0900Z-250314T1800Z/ Northeastern Mendocino Interior-Northern Lake- Including Covelo and Gravelly Valley Airport 831 PM PDT Thu Mar 13 2025 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 2 AM TO 11 AM PDT FRIDAY ABOVE 1500 FEET... * WHAT...Snow expected Above 1500 feet. Total snow accumulations 1 to 4 inches. Winds gusting as high as 35 mph. * WHERE...Northeastern Mendocino Interior and Northern Lake. * WHEN...From 2 AM to 11 AM PDT Friday. * IMPACTS...Travel could be very difficult. Tire chains may be necessary if travelling through mountain passes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ CAZ102-105-141145- /O.CON.KEKA.WW.Y.0006.250314T1100Z-250314T1800Z/ Del Norte Interior-Northern Humboldt Interior- Including Orleans, Bald Hills Rd, Gasquet, Hwy 199-Collier Tunnel, Hoopa, Willow Creek, Hwy 299-Berry Summit, and Hwy 101-Prairie Creek Summit 831 PM PDT Thu Mar 13 2025 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 4 AM TO 11 AM PDT FRIDAY ABOVE 1500 FEET... * WHAT...Snow expected ABOVE 1500 FEET. Total snow accumulations between 2 and 4 inches. * WHERE...Del Norte Interior and Northern Humboldt Interior. * WHEN...From 4 AM to 11 AM PDT Friday. * IMPACTS...Travel could be very difficult on highways 299 and 199. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ For hazard areas see https://www.wrh.noaa.gov/map/?wfo=eka ZVS
193 WWUS46 KEKA 141110 WSWEKA URGENT - WINTER WEATHER MESSAGE National Weather Service Eureka CA 410 AM PDT Fri Mar 14 2025 CAZ107-108-141915- /O.CON.KEKA.WS.W.0007.000000T0000Z-250315T0000Z/ Northern Trinity-Southern Trinity- Including Ruth, Hwy 3-Scott Mountain, Hayfork, Hwy 299-Buckhorn Summit, Hwy 299-Oregon Mountain, Weaverville, Hwy 3-Hayfork Summit, Trinity Center, Forest Glen, Hwy 36-South Fork Mountain, Big Bar, and Hyampom 410 AM PDT Fri Mar 14 2025 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM PDT THIS AFTERNOON... * WHAT...Heavy snow expected. Total snow accumulations between 5 and 11 inches. * WHERE...Trinity County. * WHEN...Until 5 PM PDT this afternoon. * IMPACTS...Travel could be very difficult. 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 you are calling from can be obtained by calling 5 1 1. && $$ CAZ102-105-141800- /O.CON.KEKA.WW.Y.0006.000000T0000Z-250314T1800Z/ Del Norte Interior-Northern Humboldt Interior- Including Hwy 299-Berry Summit, Willow Creek, Bald Hills Rd, Gasquet, Hoopa, Orleans, Hwy 101-Prairie Creek Summit, and Hwy 199-Collier Tunnel 410 AM PDT Fri Mar 14 2025 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 AM PDT THIS MORNING ABOVE 1500 FEET... * WHAT...Snow expected ABOVE 1500 FEET. Total snow accumulations between 2 and 4 inches. * WHERE...Del Norte Interior and Northern Humboldt Interior. * WHEN...Until 11 AM PDT this morning. * IMPACTS...Travel could be very difficult on highways 299 and 199. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ CAZ110-115-141800- /O.CON.KEKA.WW.Y.0006.000000T0000Z-250314T1800Z/ Northwestern Mendocino Interior-Southern Lake- Including Willits, Hidden Valley Lake, Laytonville, Clearlake, Legget, Oasis, Potter Valley, Cobb, Lakeport, Hwy 101-Rattlesnake Summit, Hwy 101-Ridgewood Summit, Knobcone Camp, and Middletown 410 AM PDT Fri Mar 14 2025 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 AM PDT THIS MORNING ABOVE 1500 FEET... * WHAT...Wet snow expected Above 1500 feet. Total snow accumulations 1 to 4 inches. Winds gusting as high as 35 mph. * WHERE...Northwestern Mendocino Interior and Southern Lake. * WHEN...Until 11 AM PDT this morning. * IMPACTS...Plan on slippery road conditions. The hazardous conditions could impact the Friday morning commute. * ADDITIONAL DETAILS...Travel could be difficult on highways 101 north of Ukiah and 175 at higher elevations. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ CAZ111-114-141800- /O.CON.KEKA.WW.Y.0006.000000T0000Z-250314T1800Z/ Northeastern Mendocino Interior-Northern Lake- Including Gravelly Valley Airport and Covelo 410 AM PDT Fri Mar 14 2025 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 AM PDT THIS MORNING ABOVE 1500 FEET... * WHAT...Snow expected Above 1500 feet. Total snow accumulations 1 to 4 inches. Winds gusting as high as 35 mph. * WHERE...Northeastern Mendocino Interior and Northern Lake. * WHEN...Until 11 AM PDT this morning. * IMPACTS...Travel could be very difficult. Tire chains may be necessary if travelling through mountain passes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ For hazard areas see https://www.wrh.noaa.gov/map/?wfo=eka EYS
551 WWUS46 KEKA 141756 WSWEKA URGENT - WINTER WEATHER MESSAGE National Weather Service Eureka CA 1056 AM PDT Fri Mar 14 2025 CAZ102-105-110-111-114-115-141900- /O.EXP.KEKA.WW.Y.0006.000000T0000Z-250314T1800Z/ Del Norte Interior-Northern Humboldt Interior-Northwestern Mendocino Interior-Northeastern Mendocino Interior-Northern Lake- Southern Lake- Including Hwy 199-Collier Tunnel, Willow Creek, Laytonville, Cobb, Potter Valley, Gravelly Valley Airport, Gasquet, Hwy 101-Prairie Creek Summit, Hwy 101-Rattlesnake Summit, Legget, Orleans, Hwy 299-Berry Summit, Willits, Covelo, Hoopa, Oasis, Hwy 101-Ridgewood Summit, Knobcone Camp, Bald Hills Rd, Lakeport, Middletown, Hidden Valley Lake, and Clearlake 1056 AM PDT Fri Mar 14 2025 ...WINTER WEATHER ADVISORY WILL EXPIRE AT 11 AM PDT THIS MORNING... The threat has ended. $$ CAZ107-108-150000- /O.CON.KEKA.WS.W.0007.000000T0000Z-250315T0000Z/ Northern Trinity-Southern Trinity- Including Hwy 299-Oregon Mountain, Hayfork, Hwy 299-Buckhorn Summit, Hyampom, Weaverville, Hwy 36-South Fork Mountain, Big Bar, Hwy 3-Hayfork Summit, Trinity Center, Forest Glen, Ruth, and Hwy 3-Scott Mountain 1056 AM PDT Fri Mar 14 2025 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM PDT THIS AFTERNOON... * WHAT...Heavy snow. Additional snow accumulations up to two inches. * WHERE...Trinity County. * WHEN...Until 5 PM PDT this afternoon. * IMPACTS...Plan on slippery road conditions. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ For hazard areas see https://www.wrh.noaa.gov/map/?wfo=eka JJW
913 WWUS46 KEKA 142113 WSWEKA URGENT - WINTER WEATHER MESSAGE National Weather Service Eureka CA 213 PM PDT Fri Mar 14 2025 CAZ107-150600- /O.NEW.KEKA.WS.W.0008.250315T1800Z-250317T0600Z/ /O.CON.KEKA.WS.W.0007.000000T0000Z-250315T0000Z/ Northern Trinity- Including Hwy 299-Oregon Mountain, Hwy 299-Buckhorn Summit, Weaverville, Big Bar, Trinity Center, and Hwy 3-Scott Mountain 213 PM PDT Fri Mar 14 2025 ...WINTER STORM WARNING IN EFFECT FROM 11 AM SATURDAY TO 11 PM PDT SUNDAY... ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM PDT THIS AFTERNOON... * WHAT...For the first Winter Storm Warning, heavy snow. Additional snow accumulations up to one inch. For the second Winter Storm Warning, heavy wet snow expected. Total snow accumulations up to two feet. * WHERE...Northern Trinity. * WHEN...For the first Winter Storm Warning, until 5 PM PDT this afternoon. For the second Winter Storm Warning, from 11 AM Saturday to 11 PM PDT Sunday. * IMPACTS...Plan on slippery road conditions. 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 you are calling from can be obtained by calling 5 1 1. && $$ CAZ108-150000- /O.CON.KEKA.WS.W.0007.000000T0000Z-250315T0000Z/ Southern Trinity- Including Hayfork, Hyampom, Hwy 36-South Fork Mountain, Hwy 3-Hayfork Summit, Forest Glen, and Ruth 213 PM PDT Fri Mar 14 2025 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM PDT THIS AFTERNOON... * WHAT...Heavy wet snow. Additional snow accumulations up to one inch. * WHERE...Southern Trinity. * WHEN...Until 5 PM PDT this afternoon. * IMPACTS...Plan on slippery road conditions. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ For hazard areas see https://www.wrh.noaa.gov/map/?wfo=eka JJW
984 WWUS46 KEKA 150001 WSWEKA URGENT - WINTER WEATHER MESSAGE National Weather Service Eureka CA 501 PM PDT Fri Mar 14 2025 CAZ107-150815- /O.EXP.KEKA.WS.W.0007.000000T0000Z-250315T0000Z/ /O.CON.KEKA.WS.W.0008.250315T1800Z-250317T0600Z/ Northern Trinity- Including Big Bar, Hwy 299-Oregon Mountain, Trinity Center, Hwy 299-Buckhorn Summit, Weaverville, and Hwy 3-Scott Mountain 501 PM PDT Fri Mar 14 2025 ...WINTER STORM WARNING HAS EXPIRED... ...WINTER STORM WARNING REMAINS IN EFFECT FROM 11 AM SATURDAY TO 11 PM PDT SUNDAY... * WHAT...Heavy wet snow expected. Total snow accumulations up to two feet. * WHERE...Northern Trinity. * WHEN...From 11 AM Saturday to 11 PM PDT Sunday. * IMPACTS...Plan on slippery road conditions. 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 you are calling from can be obtained by calling 5 1 1. && $$ CAZ108-150115- /O.EXP.KEKA.WS.W.0007.000000T0000Z-250315T0000Z/ Southern Trinity- Including Hwy 3-Hayfork Summit, Ruth, Hwy 36-South Fork Mountain, Forest Glen, Hayfork, and Hyampom 501 PM PDT Fri Mar 14 2025 ...WINTER STORM WARNING HAS EXPIRED... The threat has ended. $$ For hazard areas see https://www.wrh.noaa.gov/map/?wfo=eka ZVS
What forecasters said that day
The local office's own words before this winter storm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Eureka, CA wrote its last area forecast discussion before this winter storm warning went out at Mar 13, 5:22 AM PDT, 5 hours 8 minutes earlier.
Area forecast discussion, Mar 13, 5:22 AM PDT, 5 hours 8 minutes before
AREA FORECAST DISCUSSION
National Weather Service Eureka CA
522 AM PDT Thu Mar 13 2025
.SYNOPSIS...A continuation of active winter weather proceeds through
the day before easing this evening. Low snow levels will accompany
the next inbound storm, likely to arrive tonight and into Friday
morning. Attention is required when transiting major travel
corridors. Snow levels should rise over the weekend as a moderate
atmospheric river storm brings an increase risk for heavy rain and
strong winds.
&&
.DISCUSSION...Atmospheric dynamics have been active in the PACNW
over the past 24 hours with the passing of a pronounced, deep trough
and associated frontal boundary. The convergence, lifting, cooling,
and condensing of moisture aloft has produced decent accumulation of
rain and snow at elevation where colder temperatures prevail. 24
hour accumulations as of 12z are near 3 inches for some areas.
Crescent City, Cooskie Mtn, and Gasquet; 2.80, 2.81, and 2.82 inches
respectively. Spotters near Dinsmore reporting snow overnight at
2400 (thanks Dottie!). Just south of King Range, there was radar
confirmed small hail overnight as well. High resolution and
convective allowance models continue to
After a brief break this evening, another storm with low snow levels
(1500-2500 feet) is forecast to arrive quickly late tonight into
Friday morning. Snow levels will start out lower with this next
round of precip and impacts on major travel corridors and will
likely be greater even though overall snow amounts will be lower
compared to the previous storm.
We may see a break in the active and wet weather on Saturday as a
ridge pumps up over the area. An atmospheric river storm (AR1/AR2)
will likely bring another bout of moderate to heavy rain and
possibly hefty high mountain snow as well as strong winds toward the
latter portion of the weekend and early next week. Snow levels
should rise up over the weekend, however travel impacts above 4000-
4500 feet are possible. There is still a great deal of variability
and spread with the timing and magnitude of winds with this next
storm and fine details are difficult to resolve multiple days out.
Stay tuned for updates. Another break in the wet and active weather
is forecast for Tuesday as a transient ridge builds. The active flow
pattern with periods of precip will probably continue mid to late
week next before more stout ridging aloft returns. /DB /EYS
&&
.AVIATION...Lingering showers will prevail through the morning
maintaining VFR/MVFR flight categories. In the Early afternoon,
another passing frontal system will drive increasing southerly
winds. This passage will be marked with an increase in rainshowers,
and even some possible Thunders/Small Hail. In addition to degrading
categories, low level turbulence is forecasted with southerly winds
building to 40-45kt at 500-1000ft AGL. The frontal will impact
coastal terminals before inland ones, as this front moves in from
the NW towards the SE. Conditions are forecasted to remain as such
through tonight into tomorrow morning.
&&
.MARINE...A strong frontal system passed through this waters this
morning and gale to strong gale criteria were met in all waters.
Winds have eased behind an area of low pressure which followed the
front, and the heightened steep, wind driven seas will continue to
slowly subside. Seas are not likely to drop below 10 ft as a 14
second WNW swell builds to 10-12 ft through Thursday. Winds will
only briefly ease today before southerly winds increase again today
night into Friday with the next strong frontal system. Gale strength
winds are forecast, and Gale Watches are up for all zones. The exact
timing of this band of strong winds is still a bit uncertain, yet
the official warning is expected to be upgraded by the next CWF
update (9AM PDT) when forecast confidence increases due to more Hi-
Res Model data becoming available. As the steep wind driven southerly
waves subside, a steep westerly swell will then build in Friday
evening at around 12-14 ft at 12 seconds and may contribute to a
chaotic sea state. Southerly winds are then forecast to once again
increase Saturday through Sunday, and gale conditions with potential
steep and hazardous seas look likely again with that frontal system.
JJW/DS
&&
.EKA WATCHES/WARNINGS/ADVISORIES...
CA...
Winter Weather Advisory until 5 PM PDT this afternoon for
CAZ102-105-107-108.
Winter Storm Watch from this evening through Friday evening
for CAZ102-105-111-114.
Wind Advisory from 11 PM this evening to 11 AM PDT Friday
for CAZ103-104-106.
Winter Weather Advisory until 11 AM PDT this morning for
CAZ104-106-110-111-113>115.
Winter Storm Watch from late tonight through Friday evening
for CAZ107-108.
Winter Storm Watch from late tonight through Friday
afternoon for CAZ110-115.
NORTHWEST CALIFORNIA COASTAL WATERS...
Small Craft Advisory until 11 PM PDT this evening for
PZZ450-455-470-475.
Gale Watch from this evening through Friday morning for
PZZ450-455-470-475.
&&
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For forecast zone information
see the forecast zone map online:
https://www.weather.gov/images/eka/zonemap.pngThe office that day
Everything else NWS Eureka, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 12, 10:05 PM PDT | Special Weather Statement | EKA | 25 min | |
| Mar 12, 10:43 PM PDT | Special Weather Statement | EKA | 32 min | |
| Mar 13, 2:03 AM PDT | Wind Advisory | EKA | Del Norte, Humboldt | 33 hr |
| Mar 13, 9:09 AM PDT | Gale Warning | EKA | 26 hr | |
| Mar 13, 12:22 PM PDT | Winter Weather Advisory | EKA | Del Norte, Humboldt, Lake, Mendocino | 23 hr |
| Mar 13, 1:52 PM PDT | High Wind Watch | EKA | Del Norte | 25 hr |
| Mar 13, 3:00 PM PDT | Hazardous Seas Watch | EKA | 12 hr |
Nearby
Winter Storm Warnings in California, 2025Every winter storm warning in 2025
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.