Alert archive / California / Winter Storm Warnings in 2022
Winter Storm Warning 5, NWS Eureka, CA
NWS Eureka, CA issued this winter storm warning at Nov 29, 2022, 8:17 AM PST for Del Norte County, Humboldt County, Trinity County, California. It took effect at Nov 30, 2022, 4:00 PM PST. It was in force for 16 hr. 1 report came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Nov 29, 2022, 8:17 AM PST (16:17 UTC)
- In effect from
- Nov 30, 2022, 4:00 PM PST
- Expired
- Dec 1, 2022, 7:30 AM PST
- In force
- 16 hr
- Issued by
- NWS Eureka, CA
Counties Del Norte County, CA, Humboldt County, CA, Trinity County, CA
The radar
The Eureka (Bunker Hill) radar (KBHX), 80 km from the middle of the area, began a volume at 16:16 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Dec 1, 3:00 AM PST | SNOW 2 | 4 Wsw Dinsmore, CA | SNOW FELL FROM 3AM TO 7AM. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Medford/Jackson, OR (KMFR), launched 12:00Z, 4.3 hours before the alert went out and 165 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
- 849 m above ground
- 0-6 km bulk shear
- 59 kt
- 0-1 km storm-relative helicity
- 59 m²/s²
- 0-3 km storm-relative helicity
- 206 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
599 WWUS46 KEKA 291617 WSWEKA URGENT - WINTER WEATHER MESSAGE National Weather Service Eureka CA 817 AM PST Tue Nov 29 2022 CAZ105-106-300030- /O.UPG.KEKA.WS.A.0004.221201T0000Z-221202T0000Z/ /O.NEW.KEKA.WS.W.0005.221201T0600Z-221202T0000Z/ Northern Humboldt Interior-Southern Humboldt Interior- 817 AM PST Tue Nov 29 2022 ...WINTER STORM WARNING IN EFFECT FROM 10 PM WEDNESDAY TO 4 PM PST THURSDAY ABOVE 2000 FEET... * WHAT...Heavy snow expected above 2000 feet. Total snow accumulations of 7 to 12 inches. Winds gusting as high as 35 mph. * WHERE...Northern Humboldt Interior and Southern Humboldt Interior Counties. * WHEN...From 10 PM Wednesday to 4 PM PST Thursday. * 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. && $$ CAZ107-108-300030- /O.UPG.KEKA.WS.A.0004.221201T0000Z-221202T0000Z/ /O.NEW.KEKA.WS.W.0005.221201T0000Z-221202T0000Z/ Northern Trinity-Southern Trinity- 817 AM PST Tue Nov 29 2022 ...WINTER STORM WARNING IN EFFECT FROM 4 PM WEDNESDAY TO 4 PM PST THURSDAY ABOVE 2500 FEET... * WHAT...Heavy snow expected above 2500 feet. Total snow accumulations of 7 to 24 inches. Winds gusting as high as 35 mph. * WHERE...Northern Trinity and Southern Trinity Counties. * WHEN...From 4 PM Wednesday to 4 PM PST Thursday. * IMPACTS...Travel could be very difficult to impossible. The hazardous conditions could impact the morning or evening commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state of California can be obtained by calling 1-800-GAS-ROAD. && $$ CAZ102-110-111-300030- /O.NEW.KEKA.WW.Y.0010.221201T0600Z-221202T0000Z/ Del Norte Interior-Northwestern Mendocino Interior- Northeastern Mendocino Interior- 817 AM PST Tue Nov 29 2022 ...WINTER WEATHER ADVISORY IN EFFECT FROM 10 PM WEDNESDAY TO 4 PM PST THURSDAY... * WHAT...Snow expected. Total snow accumulations of up to 7 inches. Winds gusting as high as 40 mph. * WHERE...Del Norte Interior, Northwestern Mendocino Interior and Northeastern Mendocino Interior Counties. * WHEN...From 10 PM Wednesday to 4 PM PST Thursday. * 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. The latest road conditions for the state of California can be obtained by calling 1-800-GAS-ROAD. && $$
8 follow-up statements
488 WWUS46 KEKA 292205 WSWEKA URGENT - WINTER WEATHER MESSAGE National Weather Service Eureka CA 205 PM PST Tue Nov 29 2022 CAZ105-106-300615- /O.CON.KEKA.WS.W.0005.221201T0600Z-221202T0000Z/ Northern Humboldt Interior-Southern Humboldt Interior- 205 PM PST Tue Nov 29 2022 ...WINTER STORM WARNING REMAINS IN EFFECT FROM 10 PM WEDNESDAY TO 4 PM PST THURSDAY ABOVE 2000 FEET... * WHAT...Heavy snow expected above 2000 feet. Total snow accumulations of 7 to 12 inches. Winds gusting as high as 40 mph. * WHERE...Northern Humboldt Interior and Southern Humboldt Interior Counties. * WHEN...From 10 PM Wednesday to 4 PM PST Thursday. * IMPACTS...Travel could be very difficult to impossible. The hazardous conditions could impact the morning commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state of California can be obtained by calling 1-800-GAS-ROAD. && $$ CAZ107-108-300615- /O.CON.KEKA.WS.W.0005.221201T0000Z-221202T0000Z/ Northern Trinity-Southern Trinity- 205 PM PST Tue Nov 29 2022 ...WINTER STORM WARNING REMAINS IN EFFECT FROM 4 PM WEDNESDAY TO 4 PM PST THURSDAY ABOVE 2500 FEET... * WHAT...Heavy snow expected above 2500 feet. Total snow accumulations of 7 to 24 inches. Winds gusting as high as 45 mph. * WHERE...Northern Trinity and Southern Trinity Counties. * WHEN...From 4 PM Wednesday to 4 PM PST Thursday. * 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. && $$ CAZ102-110-111-300615- /O.CON.KEKA.WW.Y.0010.221201T0600Z-221202T0000Z/ Del Norte Interior-Northwestern Mendocino Interior- Northeastern Mendocino Interior- 205 PM PST Tue Nov 29 2022 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 10 PM WEDNESDAY TO 4 PM PST THURSDAY... * WHAT...Snow expected. Total snow accumulations of up to 7 inches. Winds gusting as high as 45 mph. * WHERE...Del Norte Interior, Northwestern Mendocino Interior and Northeastern Mendocino Interior Counties. * WHEN...From 10 PM Wednesday to 4 PM PST Thursday. * IMPACTS...Travel could be very difficult to impossible. The hazardous conditions could impact the morning commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state of California can be obtained by calling 1-800-GAS-ROAD. && $$
998 WWUS46 KEKA 300601 WSWEKA URGENT - WINTER WEATHER MESSAGE National Weather Service Eureka CA 1001 PM PST Tue Nov 29 2022 CAZ105-106-301415- /O.CON.KEKA.WS.W.0005.221201T0600Z-221202T0000Z/ Northern Humboldt Interior-Southern Humboldt Interior- 1001 PM PST Tue Nov 29 2022 ...WINTER STORM WARNING REMAINS IN EFFECT FROM 10 PM WEDNESDAY TO 4 PM PST THURSDAY ABOVE 2000 FEET... * WHAT...Heavy snow expected above 2,000 feet. Total snow accumulations of 7 to 12 inches. Winds gusting as high as 40 mph. * WHERE...Northern Humboldt Interior and Southern Humboldt Interior Counties. * WHEN...From 10 PM Wednesday to 4 PM PST Thursday. * 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. && $$ CAZ107-108-301415- /O.CON.KEKA.WS.W.0005.221201T0000Z-221202T0000Z/ Northern Trinity-Southern Trinity- 1001 PM PST Tue Nov 29 2022 ...WINTER STORM WARNING REMAINS IN EFFECT FROM 4 PM WEDNESDAY TO 4 PM PST THURSDAY ABOVE 2500 FEET... * WHAT...Heavy snow expected above 2,500 feet. Total snow accumulations of 7 to 24 inches. Winds gusting as high as 45 mph. * WHERE...Northern Trinity and Southern Trinity Counties. * WHEN...From 4 PM Wednesday to 4 PM PST Thursday. * IMPACTS...Travel could be very difficult to impossible. The hazardous conditions could impact the morning or evening commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state of California can be obtained by calling 1-800-GAS-ROAD. && $$ CAZ102-110-111-301415- /O.CON.KEKA.WW.Y.0010.221201T0600Z-221202T0000Z/ Del Norte Interior-Northwestern Mendocino Interior- Northeastern Mendocino Interior- 1001 PM PST Tue Nov 29 2022 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 10 PM WEDNESDAY TO 4 PM PST THURSDAY... * WHAT...Snow expected. Total snow accumulations of up to 7 inches. Winds gusting as high as 45 mph. * WHERE...Del Norte Interior, Northwestern Mendocino Interior and Northeastern Mendocino Interior Counties. * WHEN...From 10 PM Wednesday to 4 PM PST Thursday. * 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. The latest road conditions for the state of California can be obtained by calling 1-800-GAS-ROAD. && $$
530 WWUS46 KEKA 301301 WSWEKA URGENT - WINTER WEATHER MESSAGE National Weather Service Eureka CA 501 AM PST Wed Nov 30 2022 CAZ102-302115- /O.EXA.KEKA.WS.W.0005.221201T0000Z-221202T0000Z/ /O.CON.KEKA.WW.Y.0010.221201T0600Z-221202T0000Z/ Del Norte Interior- 501 AM PST Wed Nov 30 2022 ...WINTER STORM WARNING IN EFFECT FROM 4 PM THIS AFTERNOON TO 4 PM PST THURSDAY... ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 10 PM THIS EVENING TO 4 PM PST THURSDAY... * WHAT...For the Winter Storm Warning, heavy snow expected above 2500 ft MSL. Total snow accumulations of 7 to 20 inches. Winds gusting as high as 45 mph. For the Winter Weather Advisory, snow expected between 1500 ft MSL and 2500 ft MSL with total snow accumulations of up to 7 inches. * WHERE...Del Norte Interior County. * WHEN...For the Winter Storm Warning, from 4 PM this afternoon to 4 PM PST Thursday. For the Winter Weather Advisory, from 10 PM this evening to 4 PM PST Thursday. * IMPACTS...Travel could be very difficult to impossible. The hazardous conditions could impact the morning or evening commute. Gusty winds could bring down tree branches. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. Slow down and use caution while traveling. The latest road conditions for the state of California can be obtained by calling 1-800-GAS-ROAD. && $$ CAZ105-106-302115- /O.EXA.KEKA.WW.Y.0010.221201T0600Z-221202T0000Z/ /O.EXT.KEKA.WS.W.0005.221201T0000Z-221202T0000Z/ Northern Humboldt Interior-Southern Humboldt Interior- 501 AM PST Wed Nov 30 2022 ...WINTER STORM WARNING NOW IN EFFECT FROM 4 PM THIS AFTERNOON TO 4 PM PST THURSDAY... ...WINTER WEATHER ADVISORY IN EFFECT FROM 10 PM THIS EVENING TO 4 PM PST THURSDAY... * WHAT...For the Winter Storm Warning, heavy snow expected above 3500 ft MSL with total snow accumulations of 7 to 20 inches. Winds gusting as high as 45 mph. For the Winter Weather Advisory, snow expected between 2000 ft MSL and 3500 ft MSL with total snow accumulations of up to 7 inches. Winds gusting as high as 35 mph. * WHERE...Northern Humboldt Interior and Southern Humboldt Interior Counties. * WHEN...For the Winter Storm Warning, from 4 PM this afternoon to 4 PM PST Thursday. For the Winter Weather Advisory, from 10 PM this evening to 4 PM PST Thursday. * 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. 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. && $$ CAZ107-108-302115- /O.EXA.KEKA.WW.Y.0010.221201T0600Z-221202T0000Z/ /O.CON.KEKA.WS.W.0005.221201T0000Z-221202T0000Z/ Northern Trinity-Southern Trinity- 501 AM PST Wed Nov 30 2022 ...WINTER STORM WARNING REMAINS IN EFFECT FROM 4 PM THIS AFTERNOON TO 4 PM PST THURSDAY... ...WINTER WEATHER ADVISORY IN EFFECT FROM 10 PM THIS EVENING TO 4 PM PST THURSDAY... * WHAT...For the Winter Storm Warning, heavy snow expected above 3500 ft MSL with total snow accumulations of 7 to 20 inches. Winds gusting as high as 40 mph. For the Winter Weather Advisory, snow expected between 2000 ft MSL to 3500 ft MSL with total snow accumulations of up to 7 inches. Winds gusting as high as 40 mph. * WHERE...Northern Trinity and Southern Trinity Counties. * WHEN...For the Winter Storm Warning, from 4 PM this afternoon to 4 PM PST Thursday. For the Winter Weather Advisory, from 10 PM this evening to 4 PM PST Thursday. * IMPACTS...Travel could be very difficult to impossible. The hazardous conditions could impact the morning or evening commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. Slow down and use caution while traveling. The latest road conditions for the state of California can be obtained by calling 1-800-GAS-ROAD. && $$ CAZ110-111-302115- /O.CON.KEKA.WW.Y.0010.221201T0600Z-221202T0000Z/ Northwestern Mendocino Interior-Northeastern Mendocino Interior- 501 AM PST Wed Nov 30 2022 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 10 PM THIS EVENING TO 4 PM PST THURSDAY... * WHAT...Snow expected. Total snow accumulations of up to 5 inches between 1500 to 4000 ft MSL. Total snow accumulations of up to 14 inches above 4000 ft MSL. Winds gusting as high as 45 mph. * WHERE...Northwestern Mendocino Interior and Northeastern Mendocino Interior Counties. * WHEN...From 10 PM this evening to 4 PM PST Thursday. * 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. The latest road conditions for the state of California can be obtained by calling 1-800-GAS-ROAD. && $$
098 WWUS46 KEKA 301552 WSWEKA URGENT - WINTER WEATHER MESSAGE National Weather Service Eureka CA 752 AM PST Wed Nov 30 2022 CAZ102-010000- /O.CAN.KEKA.WS.W.0005.221201T0000Z-221202T0000Z/ /O.CON.KEKA.WW.Y.0010.221201T0600Z-221202T0000Z/ Del Norte Interior- 752 AM PST Wed Nov 30 2022 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 10 PM THIS EVENING TO 4 PM PST THURSDAY... ...WINTER STORM WARNING IS CANCELLED... * WHAT...Snow expected. Total snow accumulations of up to 7 inches. * WHERE...Del Norte Interior County. * WHEN...From 10 PM this evening to 4 PM PST Thursday. * IMPACTS...Travel could be very difficult to impossible. The hazardous conditions could impact the morning or evening commute. Gusty winds could bring down tree branches. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state of California can be obtained by calling 1-800-GAS-ROAD. && $$ CAZ105-106-010000- /O.CAN.KEKA.WW.Y.0010.221201T0600Z-221202T0000Z/ /O.EXT.KEKA.WS.W.0005.221201T0600Z-221202T0000Z/ Northern Humboldt Interior-Southern Humboldt Interior- 752 AM PST Wed Nov 30 2022 ...WINTER STORM WARNING NOW IN EFFECT FROM 10 PM THIS EVENING TO 4 PM PST THURSDAY ABOVE 2500 FEET... ...WINTER WEATHER ADVISORY IS CANCELLED... * WHAT...Heavy snow expected above 2500 feet. Total snow accumulations of 7 to 10 inches. Winds gusting as high as 40 mph. * WHERE...Northern Humboldt Interior and Southern Humboldt Interior Counties. * WHEN...From 10 PM this evening to 4 PM PST Thursday. * 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. && $$ CAZ107-108-010000- /O.CAN.KEKA.WW.Y.0010.221201T0600Z-221202T0000Z/ /O.CON.KEKA.WS.W.0005.221201T0000Z-221202T0000Z/ Northern Trinity-Southern Trinity- 752 AM PST Wed Nov 30 2022 ...WINTER STORM WARNING REMAINS IN EFFECT FROM 4 PM THIS AFTERNOON TO 4 PM PST THURSDAY ABOVE 2500 FEET... ...WINTER WEATHER ADVISORY IS CANCELLED... * WHAT...Heavy snow expected above 2500 feet. Total snow accumulations of up to 20 inches. Winds gusting as high as 45 mph. * WHERE...Northern Trinity and Southern Trinity Counties. * WHEN...From 4 PM this afternoon to 4 PM PST Thursday. * IMPACTS...Travel could be very difficult to impossible. The hazardous conditions could impact the morning or evening commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state of California can be obtained by calling 1-800-GAS-ROAD. && $$ CAZ110-111-010000- /O.CON.KEKA.WW.Y.0010.221201T0600Z-221202T0000Z/ Northwestern Mendocino Interior-Northeastern Mendocino Interior- 752 AM PST Wed Nov 30 2022 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 10 PM THIS EVENING TO 4 PM PST THURSDAY... * WHAT...Snow expected. Total snow accumulations of up to 7 inches. Winds gusting as high as 45 mph. * WHERE...Northwestern Mendocino Interior and Northeastern Mendocino Interior Counties. * WHEN...From 10 PM this evening to 4 PM PST Thursday. * 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. The latest road conditions for the state of California can be obtained by calling 1-800-GAS-ROAD. && $$
693 WWUS46 KEKA 302214 WSWEKA URGENT - WINTER WEATHER MESSAGE National Weather Service Eureka CA 214 PM PST Wed Nov 30 2022 CAZ107-108-010615- /O.EXT.KEKA.WS.W.0005.221201T0000Z-221201T1800Z/ Northern Trinity-Southern Trinity- 214 PM PST Wed Nov 30 2022 ...WINTER STORM WARNING NOW IN EFFECT UNTIL 10 AM PST THURSDAY ABOVE 2500 FEET... * WHAT...Heavy snow expected above 2500 feet. Total snow accumulations of 7 to 14 inches. * WHERE...Northern Trinity and Southern Trinity Counties. * WHEN...Until 10 AM PST Thursday. * IMPACTS...Travel could be very difficult to impossible. The hazardous conditions could impact the morning or evening commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state of California can be obtained by calling 1-800-GAS-ROAD. && $$ CAZ105-106-010615- /O.EXT.KEKA.WS.W.0005.221201T0600Z-221201T1800Z/ Northern Humboldt Interior-Southern Humboldt Interior- 214 PM PST Wed Nov 30 2022 ...WINTER STORM WARNING NOW IN EFFECT FROM 10 PM THIS EVENING TO 10 AM PST THURSDAY ABOVE 2500 FEET... * WHAT...Heavy snow expected above 2500 feet. Total snow accumulations of 7 to 10 inches. * WHERE...Northern Humboldt Interior and Southern Humboldt Interior Counties. * WHEN...From 10 PM this evening to 10 AM PST Thursday. * 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. && $$ CAZ110-111-010615- /O.EXT.KEKA.WW.Y.0010.221201T0600Z-221201T1800Z/ Northwestern Mendocino Interior-Northeastern Mendocino Interior- 214 PM PST Wed Nov 30 2022 ...WINTER WEATHER ADVISORY NOW IN EFFECT FROM 10 PM THIS EVENING TO 10 AM PST THURSDAY ABOVE 1500 FEET... * WHAT...Snow expected above 1500 feet. Total snow accumulations of 3 to 6 inches. * WHERE...Northwestern Mendocino Interior and Northeastern Mendocino Interior Counties. * WHEN...From 10 PM this evening to 10 AM PST Thursday. * IMPACTS...Travel could be very difficult to impossible. The hazardous conditions could impact the morning commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state of California can be obtained by calling 1-800-GAS-ROAD. && $$ CAZ102-010615- /O.EXT.KEKA.WW.Y.0010.221201T0600Z-221201T1800Z/ Del Norte Interior- 214 PM PST Wed Nov 30 2022 ...WINTER WEATHER ADVISORY NOW IN EFFECT FROM 10 PM THIS EVENING TO 10 AM PST THURSDAY ABOVE 2000 FEET... * WHAT...Snow expected above 2000 feet. Total snow accumulations of 3 to 6 inches. * WHERE...Del Norte Interior County. * WHEN...From 10 PM this evening to 10 AM PST Thursday. * 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. && $$
470 WWUS46 KEKA 010616 WSWEKA URGENT - WINTER WEATHER MESSAGE National Weather Service Eureka CA 1016 PM PST Wed Nov 30 2022 CAZ105>108-011430- /O.CON.KEKA.WS.W.0005.000000T0000Z-221201T1800Z/ Northern Humboldt Interior-Southern Humboldt Interior- Northern Trinity-Southern Trinity- 1016 PM PST Wed Nov 30 2022 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 10 AM PST THURSDAY ABOVE 2500 FEET... * WHAT...Heavy snow above 2,500 feet. Additional snow accumulations of 7 to 14 inches. * WHERE...Northern Humboldt Interior, Southern Humboldt Interior, Northern Trinity and Southern Trinity Counties. * WHEN...Until 10 AM PST Thursday. * IMPACTS...Travel could be very difficult to impossible. The hazardous conditions could impact the morning commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state of California can be obtained by calling 1-800-GAS-ROAD. && $$ CAZ110-111-011430- /O.CON.KEKA.WW.Y.0010.000000T0000Z-221201T1800Z/ Northwestern Mendocino Interior-Northeastern Mendocino Interior- 1016 PM PST Wed Nov 30 2022 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 10 AM PST THURSDAY ABOVE 1500 FEET... * WHAT...Snow above 1,500 feet. Additional snow accumulations of up to 3 to 6 inches. * WHERE...Northwestern Mendocino Interior and Northeastern Mendocino Interior Counties. * WHEN...Until 10 AM PST Thursday. * 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. The latest road conditions for the state of California can be obtained by calling 1-800-GAS-ROAD. && $$ CAZ102-011430- /O.CON.KEKA.WW.Y.0010.000000T0000Z-221201T1800Z/ Del Norte Interior- 1016 PM PST Wed Nov 30 2022 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 10 AM PST THURSDAY ABOVE 2000 FEET... * WHAT...Snow above 2000 feet. Additional snow accumulations of 3 to 6 inches. * WHERE...Del Norte Interior County. * WHEN...Until 10 AM PST Thursday. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the morning commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state of California can be obtained by calling 1-800-GAS-ROAD. && $$
224 WWUS46 KEKA 011146 WSWEKA URGENT - WINTER WEATHER MESSAGE National Weather Service Eureka CA 346 AM PST Thu Dec 1 2022 CAZ105>108-011800- /O.CON.KEKA.WS.W.0005.000000T0000Z-221201T1800Z/ Northern Humboldt Interior-Southern Humboldt Interior- Northern Trinity-Southern Trinity- 346 AM PST Thu Dec 1 2022 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 10 AM PST THIS MORNING ABOVE 2500 FEET... * WHAT...Heavy snow above 2500 feet. Additional snow accumulations of 1 to 3 inches. * WHERE...Northern Humboldt Interior, Southern Humboldt Interior, Northern Trinity and Southern Trinity Counties. * WHEN...Until 10 AM PST this morning. * 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. The latest road conditions for the state of California can be obtained by calling 1-800-GAS-ROAD. && $$ CAZ110-111-011800- /O.CON.KEKA.WW.Y.0010.000000T0000Z-221201T1800Z/ Northwestern Mendocino Interior-Northeastern Mendocino Interior- 346 AM PST Thu Dec 1 2022 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 10 AM PST THIS MORNING ABOVE 1500 FEET... * WHAT...Snow above 1500 feet. Additional snow accumulations of up to 4 inches, mainly in the highest elevations of the NW corner. Elsewhere, a dusting of snow or up to 2 inches. * WHERE...Northwestern Mendocino Interior and Northeastern Mendocino Interior Counties. * WHEN...Until 10 AM PST this morning. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the morning commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state of California can be obtained by calling 1-800-GAS-ROAD. && $$ CAZ102-011800- /O.CON.KEKA.WW.Y.0010.000000T0000Z-221201T1800Z/ Del Norte Interior- 346 AM PST Thu Dec 1 2022 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 10 AM PST THIS MORNING ABOVE 2000 FEET... * WHAT...Snow above 2000 feet. Additional snow accumulations of 2 to 4 inches. * WHERE...Del Norte Interior County. * WHEN...Until 10 AM PST this morning. * IMPACTS...Plan on slippery road conditions. 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. && $$
152 WWUS46 KEKA 011530 WSWEKA URGENT - WINTER WEATHER MESSAGE National Weather Service Eureka CA 730 AM PST Thu Dec 1 2022 CAZ105>108-011630- /O.CAN.KEKA.WS.W.0005.000000T0000Z-221201T1800Z/ Northern Humboldt Interior-Southern Humboldt Interior- Northern Trinity-Southern Trinity- 730 AM PST Thu Dec 1 2022 ...WINTER STORM WARNING IS CANCELLED... $$ CAZ102-011630- /O.CAN.KEKA.WW.Y.0010.000000T0000Z-221201T1800Z/ Del Norte Interior- 730 AM PST Thu Dec 1 2022 ...WINTER WEATHER ADVISORY IS CANCELLED... $$ CAZ110-111-011800- /O.CON.KEKA.WW.Y.0010.000000T0000Z-221201T1800Z/ Northwestern Mendocino Interior-Northeastern Mendocino Interior- 730 AM PST Thu Dec 1 2022 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 10 AM PST THIS MORNING ABOVE 1500 FEET... * WHAT...Snow above 1500 feet. Additional snow accumulations of up to one inch. * WHERE...Northwestern Mendocino Interior and Northeastern Mendocino Interior Counties. * WHEN...Until 10 AM PST this morning. * IMPACTS...Plan on slippery road conditions. The hazardous conditions could impact the morning commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state of California can be obtained by calling 1-800-GAS-ROAD. && $$
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 Nov 29, 5:49 AM PST, 2 hours 28 minutes earlier.
Area forecast discussion, Nov 29, 5:49 AM PST, 2 hours 28 minutes before
AREA FORECAST DISCUSSION
National Weather Service Eureka CA
549 AM PST Tue Nov 29 2022
.SYNOPSIS...Below average afternoon temperatures and chilly overnight
temperatures are expected to continue into next week. A significant
winter storm is expected Wednesday night and throughout Thursday.
Another winter system is expected by Friday.
&&
.DISCUSSION...A strong cold front associated with a low pressure
system off the coast of Vancouver Island is expected to move through
Northwest California on Wednesday. As a result, widespread chances
for measurable rainfall and lower elevation snow are expected
Wednesday night and into Thursday. This will most likely be a
significant winter storm event for the region.
Rainfall could reach over 1 inch to up to 3 inches. Windward
facing slopes are expected to have higher amounts than other parts
of the region. An intense band of precipitation moving in with
the cold front could also cause concern for localized flooding.
Flood prone areas and burn scars will be monitored.
On Thursday, snow levels could be as low as 2000 ft MSL. Initially,
the snow level could lower even more due to precipitation falling
through the cold and dry air mass preceding the moist air influx.
Further into Thursday, snow levels could remain low due to heavy
precipitation and upslope flow. If the snow levels are 2000 ft MSL
or below, many highway passes in Trinity, Humboldt and Del Norte
Counties would be impacted by heavy snow. The high elevation
sections of Highway 101 in Mendocino county could even potentially
see an inch or two of snow which would impact travel. Due to the
highly localized nature and many factors that go into snow levels in
the mountainous areas of the region, it is hard to pin down an exact
snow level. However, areas above 2000 ft MSL in Humboldt, Del Norte
and Trinity counties will most likely be upgraded from a Winter
Storm Watch to a Warning due to a high probability of heavy snow. In
general, areas in these counties above 2000 ft MSL are expected to
have snow throughout the duration of the event.
Ensemble models indicate more possibilities of systems favorable for
periods of rain and mountain snow into next week. In particular,
another system could potentially affect the Pacific Northwest going
into the weekend. This next system moving in on Friday is expected
to be colder with more potential for low elevation snow. Ensemble
models indicate that it will head south and then east toward the
Oregon Coast by Saturday afternoon. All ensemble models indicate
that the low will lose momentum before making it to the coast, but
to what degree is still uncertain. /JLW
&&
.AVIATION...Mainly VFR conditions being observed across the region as post
frontal northerly flow and drier air filter across the region. The VFR conditions
are expected to persist for another 24 hours before high and mid cloud cover
associated with an approaching front move into NW CA Wednesday morning. Thereafter
clouds, southerly winds and precipitation is expected as a winter storm will
bring mvfr and windy conditions to the the coastal terminals and interior areas through
Friday.
&&
.MARINE...Seas are still lingering around 11 feet this morning but
winds have diminished significantly. A brief period of light northerlies
and sca seas will continue today before winds begin to shift southwesterly
and westerly tonight. The wind shift will continue in advance of a potent
frontal system approach the waters from the northwest. This feature will
continue to promote an increase in wind speeds to Gale force across the
northern outer waters but at this time other zones should remain within
small craft advisory. The northern inner may still require a Gale too
but will wait for additional model runs. Winds will peak with frontal
passage on Wednesday around midday or early afternoon. Winds then shift
around to the N-NW and diminish during the day on Thursday, however a large
W-NW swell will build and seas are forecast to rise above 10 feet. Another
front will approach toward the end of the week and gale force winds and
large steep seas are forecast again. Gale force winds may persist into
Saturday mornings, but winds are forecast to trend down as another large
swell builds.
&&
.HYDROLOGY...A multi-inch rainfall event is forecast to occur
across Northwest California Wednesday evening through Thursday
afternoon. Low-level moisture flux will be favorably oriented
with west-southwest facing terrain such that locally heavy
rainfall rates will be possible...particularly in the vicinity of
the coast. That could lead to some areas of urban and small
stream flooding, as well as an increased risk for mountain rock
and mud slides. In addition, there is a marginal risk that
rainfall rates may become sufficiently large for debris flow
concerns across area burn scars.
&&
.EKA WATCHES/WARNINGS/ADVISORIES...
CA...
Freeze Warning until 9 AM PST this morning for CAZ101-103-
109.
Winter Storm Watch from Wednesday afternoon through
Thursday afternoon for CAZ105>108.
NORTHWEST CALIFORNIA COASTAL WATERS...
Small Craft Advisory from 10 AM to 3 PM PST Wednesday for
PZZ450.
Small Craft Advisory until 3 PM PST this afternoon for
PZZ455-475.
Gale Warning from 7 AM to 3 PM PST Wednesday for PZZ470.
&&
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For forecast zone information
see the forecast zone map online:
https://www.weather.gov/images/eka/zonemap.pngHazardous weather outlook, Nov 29, 3:57 AM PST, 4 hours 20 minutes before
Hazardous Weather Outlook National Weather Service Eureka CA 357 AM PST Tue Nov 29 2022 CAZ101-103-109-301200- Coastal Del Norte-Northern Humboldt Coast-Mendocino Coast- 357 AM PST Tue Nov 29 2022 ...FREEZE WARNING IN EFFECT UNTIL 9 AM PST THIS MORNING... This hazardous weather outlook is for northwest California. .DAY ONE...Today and tonight. A Freeze Warning is currently in effect. .DAYS TWO THROUGH SEVEN...Wednesday through Monday. No hazardous weather is expected at this time. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. CAZ102-104-110>115-301200- Del Norte Interior-Southwestern Humboldt- Northwestern Mendocino Interior-Northeastern Mendocino Interior- Southwestern Mendocino Interior-Southeastern Mendocino Interior- Northern Lake-Southern Lake- 357 AM PST Tue Nov 29 2022 This hazardous weather outlook is for northwest California. .DAY ONE...Today and tonight. No hazardous weather is expected at this time. .DAYS TWO THROUGH SEVEN...Wednesday through Monday. Low elevation snow probable on Thursday. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. CAZ105>108-301200- Northern Humboldt Interior-Southern Humboldt Interior- Northern Trinity-Southern Trinity- 357 AM PST Tue Nov 29 2022 ...WINTER STORM WATCH IN EFFECT FROM WEDNESDAY AFTERNOON THROUGH THURSDAY AFTERNOON... This hazardous weather outlook is for northwest California. .DAY ONE...Today and tonight. No hazardous weather is expected at this time. .DAYS TWO THROUGH SEVEN...Wednesday through Monday. A Winter Storm Watch is currently in effect. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time.
The office that day
Everything else NWS Eureka, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Nov 28, 8:39 PM PST | Gale Watch | EKA | 7 hr | |
| Nov 29, 3:42 AM PST | Gale Warning | EKA | 37 hr | |
| Nov 29, 3:42 AM PST | Small Craft Advisory | EKA | 5 hr | |
| Nov 29, 8:17 AM PST | Winter Weather Advisory | EKA | Del Norte, Humboldt, Mendocino, Trinity | 50 hr |
| Nov 29, 8:18 AM PST | Wind Advisory | EKA | Del Norte, Humboldt | 35 hr |
| Nov 29, 8:35 AM PST | Small Craft Advisory | EKA | 3 hr | |
| Nov 29, 2:25 PM PST | Small Craft Advisory | EKA | 4 days |
Nearby
Winter Storm Warnings in California, 2022Every winter storm warning in 2022
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.