Alert archive / California / Wind Advisories in 2024
Wind Advisory 25, NWS Eureka, CA
NWS Eureka, CA issued this wind advisory at Nov 19, 2024, 4:17 AM PST for Lake County, Mendocino County, California. It took effect at Nov 19, 2024, 7:00 PM PST. It was in force for 27 hr.
The area
The counties it named.
The facts
- Issued
- Nov 19, 2024, 4:17 AM PST (12:17 UTC)
- In effect from
- Nov 19, 2024, 7:00 PM PST
- Expired
- Nov 20, 2024, 10:00 PM PST
- In force
- 27 hr
- Issued by
- NWS Eureka, CA
Counties Lake County, CA, Mendocino County, CA
The radar
The Beale AFB radar (KBBX), 128 km from the middle of the area, began a volume at 12:20 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
Oakland, CA (KOAK), launched 12:00Z, 0.3 hours before the alert went out and 188 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
- 1383 m above ground
- 0-6 km bulk shear
- 64 kt
- 0-1 km storm-relative helicity
- 37 m²/s²
- 0-3 km storm-relative helicity
- 73 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
049 WWUS76 KEKA 191217 NPWEKA URGENT - WEATHER MESSAGE National Weather Service Eureka CA 417 AM PST Tue Nov 19 2024 CAZ101-102-192030- /O.CON.KEKA.HW.W.0006.241120T0000Z-241120T1000Z/ Coastal Del Norte-Del Norte Interior- Including Crescent City 417 AM PST Tue Nov 19 2024 ...HIGH WIND WARNING REMAINS IN EFFECT FROM 4 PM THIS AFTERNOON TO 2 AM PST WEDNESDAY... * WHAT...South winds 25 to 45 mph with gusts up to 65 mph expected along shore and up to 75 mph along high ridges. * WHERE...Del Norte County. * WHEN...From 4 PM this afternoon to 2 AM PST Wednesday. * IMPACTS...Damaging winds will blow down trees and power lines. Widespread power outages are expected. Travel will be difficult, especially for high profile vehicles. PRECAUTIONARY/PREPAREDNESS ACTIONS... Remain in the lower levels of your home during the windstorm, and avoid windows. Watch for falling debris and tree limbs. Use caution if you must drive. && $$ CAZ104-192030- /O.CON.KEKA.HW.W.0006.241120T0000Z-241120T1400Z/ Southwestern Humboldt- Including Shelter Cove 417 AM PST Tue Nov 19 2024 ...HIGH WIND WARNING REMAINS IN EFFECT FROM 4 PM THIS AFTERNOON TO 6 AM PST WEDNESDAY... * WHAT...South winds 35 to 45 mph with gusts up to 85 mph possible along the highest ridges of the King Range. * WHERE...Southwestern Humboldt. * WHEN...From 4 PM this afternoon to 6 AM PST Wednesday. * IMPACTS...Damaging winds will blow down trees and power lines. Widespread power outages are expected. Travel will be difficult, especially for high profile vehicles. PRECAUTIONARY/PREPAREDNESS ACTIONS... Remain in the lower levels of your home during the windstorm, and avoid windows. Watch for falling debris and tree limbs. Use caution if you must drive. && $$ CAZ103-192030- /O.CON.KEKA.HW.W.0006.241120T0300Z-241120T1200Z/ Northern Humboldt Coast- Including Samoa, Fortuna, Fernbridge, and Trinidad 417 AM PST Tue Nov 19 2024 ...HIGH WIND WARNING REMAINS IN EFFECT FROM 7 PM THIS EVENING TO 4 AM PST WEDNESDAY... * WHAT...Southeast winds 25 to 35 mph with gusts up to 60 mph expected along shore and in the Eel River Delta. * WHERE...Northern Humboldt Coast. * WHEN...From 7 PM this evening to 4 AM PST Wednesday. * IMPACTS...Damaging winds will blow down trees and power lines. Widespread power outages are expected. Travel will be difficult, especially for high profile vehicles. Wind gusts will be particularly strong along windward ridges, exposed coastal headlands, and along the Eel River Delta. PRECAUTIONARY/PREPAREDNESS ACTIONS... Remain in the lower levels of your home during the windstorm, and avoid windows. Watch for falling debris and tree limbs. Use caution if you must drive. && $$ CAZ105-106-192030- /O.CON.KEKA.HW.W.0006.241120T0300Z-241120T1200Z/ Northern Humboldt Interior-Southern Humboldt Interior- Including Pepperwood, Kneeland, Shively, and Garberville 417 AM PST Tue Nov 19 2024 ...HIGH WIND WARNING REMAINS IN EFFECT FROM 7 PM THIS EVENING TO 4 AM PST WEDNESDAY... * WHAT...South winds 30 to 40 mph with gusts up to 70 mph expected. * WHERE...Humboldt Interior along exposed ridges. * WHEN...From 7 PM this evening to 4 AM PST Wednesday. * IMPACTS...Damaging winds will blow down trees and power lines. Widespread power outages are expected. Travel will be difficult, especially for high profile vehicles. PRECAUTIONARY/PREPAREDNESS ACTIONS... Remain in the lower levels of your home during the windstorm, and avoid windows. Watch for falling debris and tree limbs. Use caution if you must drive. && $$ CAZ109>111-113-192030- /O.NEW.KEKA.WI.Y.0025.241120T0300Z-241120T1600Z/ Mendocino Coast-Northwestern Mendocino Interior-Northeastern Mendocino Interior-Southeastern Mendocino Interior- Including Talmage, Rockport, and Laytonville 417 AM PST Tue Nov 19 2024 ...WIND ADVISORY IN EFFECT FROM 7 PM THIS EVENING TO 8 AM PST WEDNESDAY... * WHAT...South winds 25 to 35 mph with gusts up to 60 mph expected. * WHERE...Northern Mendocino Interior, Mendocino Coast, and Southeastern Mendocino Interior. * WHEN...From 7 PM this evening to 8 AM PST Wednesday. * IMPACTS...Wind gusts will be particularly strong along windward ridges and exposed coastal headlands. There is an increased risk of tree branches and other debris on roadways. PRECAUTIONARY/PREPAREDNESS ACTIONS... Winds this strong can make driving difficult, especially for high profile vehicles. Use extra caution. && $$ For hazard areas see https://www.wrh.noaa.gov/map/?wfo=eka TDJ
9 follow-up statements
048 WWUS76 KEKA 191930 NPWEKA URGENT - WEATHER MESSAGE National Weather Service Eureka CA 1130 AM PST Tue Nov 19 2024 CAZ101-102-200530- /O.CON.KEKA.HW.W.0006.241120T0000Z-241120T1000Z/ Coastal Del Norte-Del Norte Interior- Including Crescent City 1130 AM PST Tue Nov 19 2024 ...HIGH WIND WARNING REMAINS IN EFFECT FROM 4 PM THIS AFTERNOON TO 2 AM PST WEDNESDAY... * WHAT...South winds 25 to 45 mph with gusts up to 65 mph expected along shore and up to 75 mph along high ridges. * WHERE...Del Norte County. * WHEN...From 4 PM this afternoon to 2 AM PST Wednesday. * IMPACTS...Damaging winds will blow down trees and power lines. Widespread power outages are expected. Travel will be difficult, especially for high profile vehicles. PRECAUTIONARY/PREPAREDNESS ACTIONS... Remain in the lower levels of your home during the windstorm, and avoid windows. Watch for falling debris and tree limbs. Use caution if you must drive. && $$ CAZ104-200530- /O.CON.KEKA.HW.W.0006.241120T0000Z-241120T1400Z/ Southwestern Humboldt- Including Shelter Cove 1130 AM PST Tue Nov 19 2024 ...HIGH WIND WARNING REMAINS IN EFFECT FROM 4 PM THIS AFTERNOON TO 6 AM PST WEDNESDAY... * WHAT...South winds 35 to 45 mph with gusts up to 85 mph possible along the highest ridges of the King Range. * WHERE...Southwestern Humboldt. * WHEN...From 4 PM this afternoon to 6 AM PST Wednesday. * IMPACTS...Damaging winds will blow down trees and power lines. Widespread power outages are expected. Travel will be difficult, especially for high profile vehicles. PRECAUTIONARY/PREPAREDNESS ACTIONS... Remain in the lower levels of your home during the windstorm, and avoid windows. Watch for falling debris and tree limbs. Use caution if you must drive. && $$ CAZ103-200530- /O.CON.KEKA.HW.W.0006.241120T0300Z-241120T1200Z/ Northern Humboldt Coast- Including Trinidad, Fortuna, Samoa, and Fernbridge 1130 AM PST Tue Nov 19 2024 ...HIGH WIND WARNING REMAINS IN EFFECT FROM 7 PM THIS EVENING TO 4 AM PST WEDNESDAY... * WHAT...Southeast winds 25 to 35 mph with gusts up to 60 mph expected along shore and in the Eel River Delta. * WHERE...Northern Humboldt Coast. * WHEN...From 7 PM this evening to 4 AM PST Wednesday. * IMPACTS...Damaging winds will blow down trees and power lines. Widespread power outages are expected. Travel will be difficult, especially for high profile vehicles. Wind gusts will be particularly strong along windward ridges, exposed coastal headlands, and along the Eel River Delta. PRECAUTIONARY/PREPAREDNESS ACTIONS... Remain in the lower levels of your home during the windstorm, and avoid windows. Watch for falling debris and tree limbs. Use caution if you must drive. && $$ CAZ105-106-200530- /O.CON.KEKA.HW.W.0006.241120T0300Z-241120T1200Z/ Northern Humboldt Interior-Southern Humboldt Interior- Including Kneeland, Pepperwood, Shively, and Garberville 1130 AM PST Tue Nov 19 2024 ...HIGH WIND WARNING REMAINS IN EFFECT FROM 7 PM THIS EVENING TO 4 AM PST WEDNESDAY... * WHAT...South winds 30 to 40 mph with gusts up to 70 mph expected. * WHERE...Humboldt Interior along exposed ridges. * WHEN...From 7 PM this evening to 4 AM PST Wednesday. * IMPACTS...Damaging winds will blow down trees and power lines. Widespread power outages are expected. Travel will be difficult, especially for high profile vehicles. PRECAUTIONARY/PREPAREDNESS ACTIONS... Remain in the lower levels of your home during the windstorm, and avoid windows. Watch for falling debris and tree limbs. Use caution if you must drive. && $$ CAZ114-115-200530- /O.EXB.KEKA.WI.Y.0025.241120T0600Z-241120T1800Z/ Northern Lake-Southern Lake- Including Middletown, Gravelly Valley Airport, Clearlake, Finley, Lakeport, Hidden Valley Lake, Knobcone Camp, and Clearlake Park 1130 AM PST Tue Nov 19 2024 ...WIND ADVISORY IN EFFECT FROM 10 PM THIS EVENING TO 10 AM PST WEDNESDAY... * WHAT...South winds 20 to 30 mph with gusts up to 50 mph expected. * WHERE...Lake County. * WHEN...From 10 PM this evening to 10 AM PST Wednesday. * IMPACTS...Wind gusts will be particularly strong along windward ridges and exposed coastal headlands. There is an increased risk of tree branches and other debris on roadways. Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. PRECAUTIONARY/PREPAREDNESS ACTIONS... Winds this strong can make driving difficult, especially for high profile vehicles. Use extra caution. Secure outdoor objects. && $$ CAZ109>111-113-200530- /O.CON.KEKA.WI.Y.0025.241120T0300Z-241120T1600Z/ Mendocino Coast-Northwestern Mendocino Interior-Northeastern Mendocino Interior-Southeastern Mendocino Interior- Including Rockport, Laytonville, and Talmage 1130 AM PST Tue Nov 19 2024 ...WIND ADVISORY REMAINS IN EFFECT FROM 7 PM THIS EVENING TO 8 AM PST WEDNESDAY... * WHAT...South winds 25 to 35 mph with gusts up to 60 mph expected. * WHERE...Northern Mendocino Interior, Mendocino Coast, and Southeastern Mendocino Interior. * WHEN...From 7 PM this evening to 8 AM PST Wednesday. * IMPACTS...Wind gusts will be particularly strong along windward ridges and exposed coastal headlands. There is an increased risk of tree branches and other debris on roadways. PRECAUTIONARY/PREPAREDNESS ACTIONS... Winds this strong can make driving difficult, especially for high profile vehicles. Use extra caution. && $$ For hazard areas see https://www.wrh.noaa.gov/map/?wfo=eka DB
978 WWUS76 KEKA 192308 NPWEKA URGENT - WEATHER MESSAGE National Weather Service Eureka CA 308 PM PST Tue Nov 19 2024 CAZ101-102-200715- /O.EXT.KEKA.HW.W.0006.241119T2308Z-241120T1000Z/ Coastal Del Norte-Del Norte Interior- Including Crescent City 308 PM PST Tue Nov 19 2024 ...HIGH WIND WARNING NOW IN EFFECT UNTIL 2 AM PST WEDNESDAY... * WHAT...South winds 25 to 45 mph with gusts up to 65 mph expected along shore and up to 75 mph along high ridges. * WHERE...Del Norte County. * WHEN...Until 2 AM PST Wednesday. * IMPACTS...Damaging winds will blow down trees and power lines. Widespread power outages are expected. Travel will be difficult, especially for high profile vehicles. Wind gusts will be particularly strong along windward ridges and exposed coastal headlands. There is an increased risk of tree branches and other debris on roadways. PRECAUTIONARY/PREPAREDNESS ACTIONS... Remain in the lower levels of your home during the windstorm, and avoid windows. Watch for falling debris and tree limbs. Use caution if you must drive. && $$ CAZ103-200715- /O.EXT.KEKA.HW.W.0006.241119T2308Z-241120T1200Z/ Northern Humboldt Coast- Including Trinidad, Fortuna, Samoa, and Fernbridge 308 PM PST Tue Nov 19 2024 ...HIGH WIND WARNING NOW IN EFFECT UNTIL 4 AM PST WEDNESDAY... * WHAT...Southeast winds 25 to 35 mph with gusts up to 60 mph expected along shore and in the Eel River Delta. * WHERE...Northern Humboldt Coast. * WHEN...Until 4 AM PST Wednesday. * IMPACTS...Damaging winds will blow down trees and power lines. Widespread power outages are expected. Travel will be difficult, especially for high profile vehicles. Wind gusts will be particularly strong along windward ridges, exposed coastal headlands, and along the Eel River Delta. PRECAUTIONARY/PREPAREDNESS ACTIONS... Remain in the lower levels of your home during the windstorm, and avoid windows. Watch for falling debris and tree limbs. Use caution if you must drive. && $$ CAZ104-200715- /O.EXT.KEKA.HW.W.0006.241119T2308Z-241120T1400Z/ Southwestern Humboldt- Including Shelter Cove 308 PM PST Tue Nov 19 2024 ...HIGH WIND WARNING NOW IN EFFECT UNTIL 6 AM PST WEDNESDAY... * WHAT...South winds 35 to 45 mph with gusts up to 85 mph possible along the highest ridges of the King Range. * WHERE...Southwestern Humboldt. * WHEN...Until 6 AM PST Wednesday. * IMPACTS...Damaging winds will blow down trees and power lines. Widespread power outages are expected. Travel will be difficult, especially for high profile vehicles. PRECAUTIONARY/PREPAREDNESS ACTIONS... Remain in the lower levels of your home during the windstorm, and avoid windows. Watch for falling debris and tree limbs. Use caution if you must drive. && $$ CAZ105-106-200715- /O.EXT.KEKA.HW.W.0006.241119T2308Z-241120T1200Z/ Northern Humboldt Interior-Southern Humboldt Interior- Including Kneeland, Pepperwood, Shively, and Garberville 308 PM PST Tue Nov 19 2024 ...HIGH WIND WARNING NOW IN EFFECT UNTIL 4 AM PST WEDNESDAY... * WHAT...South winds 30 to 40 mph with gusts up to 70 mph. * WHERE...Humboldt Interior along exposed ridges. * WHEN...Until 4 AM PST Wednesday. * IMPACTS...Damaging winds will blow down trees and power lines. Widespread power outages are expected. Travel will be difficult, especially for high profile vehicles. PRECAUTIONARY/PREPAREDNESS ACTIONS... Remain in the lower levels of your home during the windstorm, and avoid windows. Watch for falling debris and tree limbs. Use caution if you must drive. && $$ CAZ109>111-113-200715- /O.CON.KEKA.WI.Y.0025.241120T0300Z-241120T1600Z/ Mendocino Coast-Northwestern Mendocino Interior-Northeastern Mendocino Interior-Southeastern Mendocino Interior- Including Rockport, Laytonville, and Talmage 308 PM PST Tue Nov 19 2024 ...WIND ADVISORY REMAINS IN EFFECT FROM 7 PM THIS EVENING TO 8 AM PST WEDNESDAY... * WHAT...South winds 25 to 35 mph with gusts up to 60 mph expected. * WHERE...Northern Mendocino Interior, Mendocino Coast, and Southeastern Mendocino Interior. * WHEN...From 7 PM this evening to 8 AM PST Wednesday. * IMPACTS...Wind gusts will be particularly strong along windward ridges and exposed coastal headlands. There is an increased risk of tree branches and other debris on roadways. PRECAUTIONARY/PREPAREDNESS ACTIONS... Winds this strong can make driving difficult, especially for high profile vehicles. Use extra caution. && $$ CAZ114-115-200715- /O.CON.KEKA.WI.Y.0025.241120T0600Z-241120T1800Z/ Northern Lake-Southern Lake- Including Middletown, Gravelly Valley Airport, Clearlake, Finley, Lakeport, Hidden Valley Lake, Knobcone Camp, and Clearlake Park 308 PM PST Tue Nov 19 2024 ...WIND ADVISORY REMAINS IN EFFECT FROM 10 PM THIS EVENING TO 10 AM PST WEDNESDAY... * WHAT...South winds 20 to 30 mph with gusts up to 50 mph expected. * WHERE...Lake County. * WHEN...From 10 PM this evening to 10 AM PST Wednesday. * IMPACTS...Wind gusts will be particularly strong along windward ridges and exposed coastal headlands. There is an increased risk of tree branches and other debris on roadways. Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. PRECAUTIONARY/PREPAREDNESS ACTIONS... Winds this strong can make driving difficult, especially for high profile vehicles. Use extra caution. Secure outdoor objects. && $$ For hazard areas see https://www.wrh.noaa.gov/map/?wfo=eka DB
138 WWUS76 KEKA 200106 NPWEKA URGENT - WEATHER MESSAGE National Weather Service Eureka CA 506 PM PST Tue Nov 19 2024 CAZ101-102-200915- /O.CON.KEKA.HW.W.0006.000000T0000Z-241120T1000Z/ Coastal Del Norte-Del Norte Interior- Including Crescent City 506 PM PST Tue Nov 19 2024 ...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 2 AM PST WEDNESDAY... * WHAT...South winds 35 to 45 mph with gusts up to 80 mph. * WHERE...Del Norte County. * WHEN...Until 2 AM PST Wednesday. * IMPACTS...Damaging winds will blow down trees and power lines. Widespread power outages are expected. Travel will be difficult, especially for high profile vehicles. Wind gusts will be particularly strong along windward ridges and exposed coastal headlands. There is an increased risk of tree branches and other debris on roadways. PRECAUTIONARY/PREPAREDNESS ACTIONS... Remain in the lower levels of your home during the windstorm, and avoid windows. Watch for falling debris and tree limbs. Use caution if you must drive. && $$ CAZ103-200915- /O.CON.KEKA.HW.W.0006.000000T0000Z-241120T1200Z/ Northern Humboldt Coast- Including Samoa, Trinidad, Fortuna, and Fernbridge 506 PM PST Tue Nov 19 2024 ...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 4 AM PST WEDNESDAY... * WHAT...Southeast winds 25 to 35 mph with gusts up to 60 mph expected along shore and in the Eel River Delta. * WHERE...Northern Humboldt Coast. * WHEN...Until 4 AM PST Wednesday. * IMPACTS...Damaging winds will blow down trees and power lines. Widespread power outages are expected. Travel will be difficult, especially for high profile vehicles. Wind gusts will be particularly strong along windward ridges, exposed coastal headlands, and along the Eel River Delta. PRECAUTIONARY/PREPAREDNESS ACTIONS... Remain in the lower levels of your home during the windstorm, and avoid windows. Watch for falling debris and tree limbs. Use caution if you must drive. && $$ CAZ104-200915- /O.CON.KEKA.HW.W.0006.000000T0000Z-241120T1400Z/ Southwestern Humboldt- Including Shelter Cove 506 PM PST Tue Nov 19 2024 ...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 6 AM PST WEDNESDAY... * WHAT...South winds 35 to 45 mph with gusts up to 85 mph possible along the highest ridges of the King Range. * WHERE...Southwestern Humboldt. * WHEN...Until 6 AM PST Wednesday. * IMPACTS...Damaging winds will blow down trees and power lines. Widespread power outages are expected. Travel will be difficult, especially for high profile vehicles. PRECAUTIONARY/PREPAREDNESS ACTIONS... Remain in the lower levels of your home during the windstorm, and avoid windows. Watch for falling debris and tree limbs. Use caution if you must drive. && $$ CAZ105-106-200915- /O.CON.KEKA.HW.W.0006.000000T0000Z-241120T1200Z/ Northern Humboldt Interior-Southern Humboldt Interior- Including Kneeland, Pepperwood, Shively, and Garberville 506 PM PST Tue Nov 19 2024 ...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 4 AM PST WEDNESDAY... * WHAT...South winds 30 to 40 mph with gusts up to 70 mph. * WHERE...Humboldt Interior along exposed ridges. * WHEN...Until 4 AM PST Wednesday. * IMPACTS...Damaging winds will blow down trees and power lines. Widespread power outages are expected. Travel will be difficult, especially for high profile vehicles. PRECAUTIONARY/PREPAREDNESS ACTIONS... Remain in the lower levels of your home during the windstorm, and avoid windows. Watch for falling debris and tree limbs. Use caution if you must drive. && $$ CAZ112-200915- /O.EXA.KEKA.WI.Y.0025.241120T0300Z-241120T1600Z/ Southwestern Mendocino Interior- 506 PM PST Tue Nov 19 2024 ...WIND ADVISORY IN EFFECT UNTIL 8 AM PST WEDNESDAY... * WHAT...South winds 20 to 30 mph with gusts up to 50 mph expected. * WHERE...Southwestern Mendocino Interior. * WHEN...Until 8 AM PST Wednesday. * IMPACTS...Wind gusts will be particularly strong along windward ridges and exposed coastal headlands. There is an increased risk of tree branches and other debris on roadways. PRECAUTIONARY/PREPAREDNESS ACTIONS... Winds this strong can make driving difficult, especially for high profile vehicles. Use extra caution. && $$ CAZ109>111-113-200915- /O.CON.KEKA.WI.Y.0025.241120T0300Z-241120T1600Z/ Mendocino Coast-Northwestern Mendocino Interior-Northeastern Mendocino Interior-Southeastern Mendocino Interior- Including Laytonville, Talmage, and Rockport 506 PM PST Tue Nov 19 2024 ...WIND ADVISORY REMAINS IN EFFECT UNTIL 8 AM PST WEDNESDAY... * WHAT...South winds 25 to 35 mph with gusts up to 60 mph expected. * WHERE...Northern Mendocino Interior, Mendocino Coast, and Southeastern Mendocino Interior. * WHEN...Until 8 AM PST Wednesday. * IMPACTS...Wind gusts will be particularly strong along windward ridges and exposed coastal headlands. There is an increased risk of tree branches and other debris on roadways. PRECAUTIONARY/PREPAREDNESS ACTIONS... Winds this strong can make driving difficult, especially for high profile vehicles. Use extra caution. && $$ CAZ114-115-200915- /O.CON.KEKA.WI.Y.0025.241120T0600Z-241120T1800Z/ Northern Lake-Southern Lake- Including Clearlake Park, Clearlake, Hidden Valley Lake, Knobcone Camp, Lakeport, Finley, Gravelly Valley Airport, and Middletown 506 PM PST Tue Nov 19 2024 ...WIND ADVISORY REMAINS IN EFFECT FROM 10 PM THIS EVENING TO 10 AM PST WEDNESDAY... * WHAT...South winds 20 to 30 mph with gusts up to 50 mph expected. * WHERE...Lake County. * WHEN...From 10 PM this evening to 10 AM PST Wednesday. * IMPACTS...Wind gusts will be particularly strong along windward ridges and exposed coastal headlands. There is an increased risk of tree branches and other debris on roadways. Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. PRECAUTIONARY/PREPAREDNESS ACTIONS... Winds this strong can make driving difficult, especially for high profile vehicles. Use extra caution. Secure outdoor objects. && $$ For hazard areas see https://www.wrh.noaa.gov/map/?wfo=eka MKK
298 WWUS76 KEKA 200915 NPWEKA URGENT - WEATHER MESSAGE National Weather Service Eureka CA 115 AM PST Wed Nov 20 2024 CAZ101-102-201200- /O.EXT.KEKA.HW.W.0006.000000T0000Z-241120T1200Z/ Coastal Del Norte-Del Norte Interior- Including Crescent City 115 AM PST Wed Nov 20 2024 ...HIGH WIND WARNING NOW IN EFFECT UNTIL 4 AM PST EARLY THIS MORNING... * WHAT...South winds 25 to 45 mph with gusts up to 65 mph expected along shore and up to 75 mph along high ridges. * WHERE...Del Norte County. * WHEN...Until 4 AM PST early this morning. * IMPACTS...Damaging winds will blow down trees and power lines. Widespread power outages are expected. Travel will be difficult, especially for high profile vehicles. Wind gusts will be particularly strong along windward ridges and exposed coastal headlands. There is an increased risk of tree branches and other debris on roadways. PRECAUTIONARY/PREPAREDNESS ACTIONS... Remain in the lower levels of your home during the windstorm, and avoid windows. Watch for falling debris and tree limbs. Use caution if you must drive. && $$ CAZ103-201200- /O.CON.KEKA.HW.W.0006.000000T0000Z-241120T1200Z/ Northern Humboldt Coast- Including Trinidad, Fortuna, Samoa, and Fernbridge 115 AM PST Wed Nov 20 2024 ...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 4 AM PST EARLY THIS MORNING... * WHAT...Southeast winds 25 to 35 mph with gusts up to 60 mph expected along shore and in the Eel River Delta. * WHERE...Northern Humboldt Coast. * WHEN...Until 4 AM PST early this morning. * IMPACTS...Damaging winds will blow down trees and power lines. Widespread power outages are expected. Travel will be difficult, especially for high profile vehicles. Wind gusts will be particularly strong along windward ridges, exposed coastal headlands, and along the Eel River Delta. PRECAUTIONARY/PREPAREDNESS ACTIONS... Remain in the lower levels of your home during the windstorm, and avoid windows. Watch for falling debris and tree limbs. Use caution if you must drive. && $$ CAZ104-201400- /O.CON.KEKA.HW.W.0006.000000T0000Z-241120T1400Z/ Southwestern Humboldt- Including Shelter Cove 115 AM PST Wed Nov 20 2024 ...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 6 AM PST EARLY THIS MORNING... * WHAT...South winds 35 to 45 mph with gusts up to 85 mph possible along the highest ridges of the King Range. * WHERE...Southwestern Humboldt. * WHEN...Until 6 AM PST early this morning. * IMPACTS...Damaging winds will blow down trees and power lines. Widespread power outages are expected. Travel will be difficult, especially for high profile vehicles. PRECAUTIONARY/PREPAREDNESS ACTIONS... Remain in the lower levels of your home during the windstorm, and avoid windows. Watch for falling debris and tree limbs. Use caution if you must drive. && $$ CAZ105-106-201200- /O.CON.KEKA.HW.W.0006.000000T0000Z-241120T1200Z/ Northern Humboldt Interior-Southern Humboldt Interior- Including Kneeland, Pepperwood, Shively, and Garberville 115 AM PST Wed Nov 20 2024 ...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 4 AM PST EARLY THIS MORNING... * WHAT...South winds 25 to 35 mph with gusts up to 60 mph. * WHERE...Humboldt Interior along exposed ridges. * WHEN...Until 4 AM PST early this morning. * IMPACTS...Damaging winds will blow down trees and power lines. Widespread power outages are expected. Travel will be difficult, especially for high profile vehicles. PRECAUTIONARY/PREPAREDNESS ACTIONS... Remain in the lower levels of your home during the windstorm, and avoid windows. Watch for falling debris and tree limbs. Use caution if you must drive. && $$ CAZ109>113-201600- /O.CON.KEKA.WI.Y.0025.000000T0000Z-241120T1600Z/ Mendocino Coast-Northwestern Mendocino Interior-Northeastern Mendocino Interior-Southwestern Mendocino Interior-Southeastern Mendocino Interior- Including Laytonville, Rockport, and Talmage 115 AM PST Wed Nov 20 2024 ...WIND ADVISORY REMAINS IN EFFECT UNTIL 8 AM PST THIS MORNING... * WHAT...South winds 20 to 30 mph with gusts up to 60 mph. * WHERE...Mendocino County. * WHEN...Until 8 AM PST this morning. * IMPACTS...Wind gusts will be particularly strong along windward ridges and exposed coastal headlands. There is an increased risk of tree branches and other debris on roadways. PRECAUTIONARY/PREPAREDNESS ACTIONS... Winds this strong can make driving difficult, especially for high profile vehicles. Use extra caution. && $$ CAZ114-115-201715- /O.CON.KEKA.WI.Y.0025.000000T0000Z-241120T1800Z/ Northern Lake-Southern Lake- Including Finley, Hidden Valley Lake, Knobcone Camp, Middletown, Gravelly Valley Airport, Lakeport, Clearlake, and Clearlake Park 115 AM PST Wed Nov 20 2024 ...WIND ADVISORY REMAINS IN EFFECT UNTIL 10 AM PST THIS MORNING... * WHAT...South winds 15 to 25 mph with gusts up to 50 mph. * WHERE...Lake County. * WHEN...Until 10 AM PST this morning. * IMPACTS...Wind gusts will be particularly strong along windward ridges and exposed coastal headlands. There is an increased risk of tree branches and other debris on roadways. Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. PRECAUTIONARY/PREPAREDNESS ACTIONS... Winds this strong can make driving difficult, especially for high profile vehicles. Use extra caution. Secure outdoor objects. && $$ For hazard areas see https://www.wrh.noaa.gov/map/?wfo=eka
015 WWUS76 KEKA 201151 NPWEKA URGENT - WEATHER MESSAGE National Weather Service Eureka CA 351 AM PST Wed Nov 20 2024 CAZ101>103-105-106-201300- /O.EXP.KEKA.HW.W.0006.000000T0000Z-241120T1200Z/ Coastal Del Norte-Del Norte Interior-Northern Humboldt Coast- Northern Humboldt Interior-Southern Humboldt Interior- Including Fortuna, Kneeland, Fernbridge, Garberville, Trinidad, Samoa, Shively, Pepperwood, and Crescent City 351 AM PST Wed Nov 20 2024 ...HIGH WIND WARNING WILL EXPIRE AT 4 AM PST EARLY THIS MORNING... Winds have dropped below warning thresholds for a majority of these zones....but will remain south with gusts to 25 to 35 mph for a few more hours. $$ CAZ104-201400- /O.CON.KEKA.HW.W.0006.000000T0000Z-241120T1400Z/ Southwestern Humboldt- Including Shelter Cove 351 AM PST Wed Nov 20 2024 ...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 6 AM PST EARLY THIS MORNING... * WHAT...South winds 25 to 40 mph with gusts up to 70 mph possible along the highest ridges of the King Range. * WHERE...Southwestern Humboldt. * WHEN...Until 6 AM PST early this morning. * IMPACTS...Damaging winds will blow down trees and power lines. Widespread power outages are expected. Travel will be difficult, especially for high profile vehicles. PRECAUTIONARY/PREPAREDNESS ACTIONS... Remain in the lower levels of your home during the windstorm, and avoid windows. Watch for falling debris and tree limbs. Use caution if you must drive. && $$ CAZ114-115-202000- /O.EXT.KEKA.WI.Y.0025.000000T0000Z-241121T0600Z/ Northern Lake-Southern Lake- Including Knobcone Camp and Gravelly Valley Airport 351 AM PST Wed Nov 20 2024 ...WIND ADVISORY NOW IN EFFECT UNTIL 10 PM PST THIS EVENING FOR ELEVATIONS ABOVE 1500 FT... * WHAT...South winds 20 to 30 mph with gusts up to 50 mph for elevations above 1500 ft. * WHERE...Lake County. Strongest winds expected in the Mayacmas Mountains, particularly around Cobb. * WHEN...Until 10 PM PST this evening. * IMPACTS...Wind gusts will be particularly strong along windward ridges and exposed coastal headlands. There is an increased risk of tree branches and other debris on roadways. Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. PRECAUTIONARY/PREPAREDNESS ACTIONS... Winds this strong can make driving difficult, especially for high profile vehicles. Use extra caution. Secure outdoor objects. && $$ CAZ109>113-201600- /O.CON.KEKA.WI.Y.0025.000000T0000Z-241120T1600Z/ Mendocino Coast-Northwestern Mendocino Interior-Northeastern Mendocino Interior-Southwestern Mendocino Interior-Southeastern Mendocino Interior- Including Laytonville, Rockport, and Talmage 351 AM PST Wed Nov 20 2024 ...WIND ADVISORY REMAINS IN EFFECT UNTIL 8 AM PST THIS MORNING... * WHAT...South winds 20 to 30 mph with gusts up to 55 mph. * WHERE...Mendocino County. * WHEN...Until 8 AM PST this morning. * IMPACTS...Wind gusts will be particularly strong along windward ridges and exposed coastal headlands. There is an increased risk of tree branches and other debris on roadways. PRECAUTIONARY/PREPAREDNESS ACTIONS... Winds this strong can make driving difficult, especially for high profile vehicles. Use extra caution. && $$ For hazard areas see https://www.wrh.noaa.gov/map/?wfo=eka
052 WWUS76 KEKA 201346 NPWEKA URGENT - WEATHER MESSAGE National Weather Service Eureka CA 546 AM PST Wed Nov 20 2024 CAZ104-201500- /O.EXP.KEKA.HW.W.0006.000000T0000Z-241120T1400Z/ Southwestern Humboldt- Including Shelter Cove 546 AM PST Wed Nov 20 2024 ...HIGH WIND WARNING WILL EXPIRE AT 6 AM PST EARLY THIS MORNING... $$ CAZ109>113-201600- /O.CON.KEKA.WI.Y.0025.000000T0000Z-241120T1600Z/ Mendocino Coast-Northwestern Mendocino Interior-Northeastern Mendocino Interior-Southwestern Mendocino Interior-Southeastern Mendocino Interior- Including Laytonville, Rockport, and Talmage 546 AM PST Wed Nov 20 2024 ...WIND ADVISORY REMAINS IN EFFECT UNTIL 8 AM PST THIS MORNING... * WHAT...South winds 20 to 30 mph with gusts up to 55 mph. * WHERE...Mendocino County. * WHEN...Until 8 AM PST this morning. * IMPACTS...Wind gusts will be particularly strong along windward ridges and exposed coastal headlands. There is an increased risk of tree branches and other debris on roadways. PRECAUTIONARY/PREPAREDNESS ACTIONS... Winds this strong can make driving difficult, especially for high profile vehicles. Use extra caution. && $$ CAZ114-115-202200- /O.CON.KEKA.WI.Y.0025.000000T0000Z-241121T0600Z/ Northern Lake-Southern Lake- Including Knobcone Camp and Gravelly Valley Airport 546 AM PST Wed Nov 20 2024 ...WIND ADVISORY REMAINS IN EFFECT UNTIL 10 PM PST THIS EVENING ELEVATIONS ABOVE 1500 FT... * WHAT...South winds 20 to 30 mph with gusts up to 50 mph for elevations above 1500 ft. * WHERE...Lake County. Strongest winds expected in the Mayacmas Mountains, particularly around Cobb. * WHEN...Until 10 PM PST this evening. * IMPACTS...Wind gusts will be particularly strong along windward ridges and exposed coastal headlands. There is an increased risk of tree branches and other debris on roadways. Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. PRECAUTIONARY/PREPAREDNESS ACTIONS... Winds this strong can make driving difficult, especially for high profile vehicles. Use extra caution. Secure outdoor objects. && $$ For hazard areas see https://www.wrh.noaa.gov/map/?wfo=eka
726 WWUS76 KEKA 201553 NPWEKA URGENT - WEATHER MESSAGE National Weather Service Eureka CA 753 AM PST Wed Nov 20 2024 CAZ109>113-201700- /O.EXP.KEKA.WI.Y.0025.000000T0000Z-241120T1600Z/ Mendocino Coast-Northwestern Mendocino Interior-Northeastern Mendocino Interior-Southwestern Mendocino Interior-Southeastern Mendocino Interior- Including Laytonville, Talmage, and Rockport 753 AM PST Wed Nov 20 2024 ...WIND ADVISORY WILL EXPIRE AT 8 AM PST THIS MORNING... The threat has ended. $$ CAZ114-115-210000- /O.CON.KEKA.WI.Y.0025.000000T0000Z-241121T0600Z/ Northern Lake-Southern Lake- Including Gravelly Valley Airport and Knobcone Camp 753 AM PST Wed Nov 20 2024 ...WIND ADVISORY REMAINS IN EFFECT UNTIL 10 PM PST THIS EVENING ELEVATIONS ABOVE 1500 FT... * WHAT...South winds 20 to 30 mph with gusts up to 50 mph for elevations above 1500 ft. * WHERE...Lake County. Strongest winds expected in the Mayacmas Mountains, particularly around Cobb. * WHEN...Until 10 PM PST this evening. * IMPACTS...Wind gusts will be particularly strong along windward ridges. There is an increased risk of tree branches and other debris on roadways. Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. PRECAUTIONARY/PREPAREDNESS ACTIONS... Winds this strong can make driving difficult, especially for high profile vehicles. Use extra caution. Secure outdoor objects. && $$ For hazard areas see https://www.wrh.noaa.gov/map/?wfo=eka DB
002 WWUS76 KEKA 202223 NPWEKA URGENT - WEATHER MESSAGE National Weather Service Eureka CA 223 PM PST Wed Nov 20 2024 CAZ109-210630- /O.NEW.KEKA.WI.Y.0026.241121T0600Z-241122T1200Z/ Mendocino Coast- Including Fort Bragg, Point Arena, and Rockport 223 PM PST Wed Nov 20 2024 ...WIND ADVISORY IN EFFECT FROM 10 PM THIS EVENING TO 4 AM PST FRIDAY... * WHAT...South winds 20 to 30 mph with gusts up to 50 mph expected. * WHERE...Mendocino Coast. * WHEN...From 10 PM this evening to 4 AM PST Friday. * IMPACTS...Wind gusts will be particularly strong along windward ridges and exposed coastal headlands. There is an increased risk of tree branches and other debris on roadways. Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. PRECAUTIONARY/PREPAREDNESS ACTIONS... Winds this strong can make driving difficult, especially for high profile vehicles. Use extra caution. Secure outdoor objects. && $$ CAZ114-115-210600- /O.CON.KEKA.WI.Y.0025.000000T0000Z-241121T0600Z/ Northern Lake-Southern Lake- Including Gravelly Valley Airport and Knobcone Camp 223 PM PST Wed Nov 20 2024 ...WIND ADVISORY REMAINS IN EFFECT UNTIL 10 PM PST THIS EVENING ELEVATIONS ABOVE 1500 FT... * WHAT...South winds 15 to 25 mph with gusts up to 45 mph for elevations above 1500 ft. * WHERE...Lake County. Strongest winds expected in the Mayacmas Mountains, particularly around Cobb. * WHEN...Until 10 PM PST this evening. * IMPACTS...Wind gusts will be particularly strong along windward ridges. There is an increased risk of tree branches and other debris on roadways. Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. PRECAUTIONARY/PREPAREDNESS ACTIONS... Winds this strong can make driving difficult, especially for high profile vehicles. Use extra caution. Secure outdoor objects. && $$ CAZ101>106-210630- /O.NEW.KEKA.HW.A.0006.241122T0000Z-241122T1200Z/ Coastal Del Norte-Del Norte Interior-Northern Humboldt Coast- Southwestern Humboldt-Northern Humboldt Interior-Southern Humboldt Interior- Including Dinsmore, Kneeland, Ft Dick, Hoopa, Pepperwood, Fernbridge, McKinleyville, Honeydew, Arcata, Crescent City, Weitchpec, Petrolia, Fortuna, Alderpoint, Shively, Shelter Cove, Orleans, Whitethorn, Benbow, Trinidad, Eureka, Willow Creek, Bull Creek, Ferndale, Klamath, Fieldbrook, Bridgeville, Ettersburg, Smith River, Briceland, Garberville, Samoa, and Gasquet 223 PM PST Wed Nov 20 2024 ...HIGH WIND WATCH IN EFFECT FROM THURSDAY AFTERNOON THROUGH LATE THURSDAY NIGHT... * WHAT...South winds 25 to 35 mph with gusts up to 65 mph possible. * WHERE...Del Norte County, and Humboldt County. * WHEN...From Thursday afternoon through late Thursday night. * IMPACTS...Damaging winds could blow down trees and power lines. Widespread power outages are possible. Travel could be difficult, especially for high profile vehicles. Wind gusts will be particularly strong along windward ridges and exposed coastal headlands. There is an increased risk of tree branches and other debris on roadways. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor the latest forecasts and warnings for updates. Fasten loose objects or shelter objects in a safe location prior to the onset of winds. && $$ For hazard areas see https://www.wrh.noaa.gov/map/?wfo=eka DB
467 WWUS76 KEKA 210551 NPWEKA URGENT - WEATHER MESSAGE National Weather Service Eureka CA 951 PM PST Wed Nov 20 2024 CAZ114-115-210700- /O.EXP.KEKA.WI.Y.0025.000000T0000Z-241121T0600Z/ Northern Lake-Southern Lake- Including Gravelly Valley Airport and Knobcone Camp 951 PM PST Wed Nov 20 2024 ...WIND ADVISORY WILL EXPIRE AT 10 PM PST THIS EVENING... The winds will continue to diminish tonight, although it may take some time over the higher terrain. Additional strong winds are possible Thursday night. $$ CAZ109-211400- /O.CON.KEKA.WI.Y.0026.241121T0600Z-241122T1200Z/ Mendocino Coast- Including Point Arena, Fort Bragg, and Rockport 951 PM PST Wed Nov 20 2024 ...WIND ADVISORY REMAINS IN EFFECT UNTIL 4 AM PST FRIDAY... * WHAT...South winds 20 to 30 mph with gusts up to 50 mph expected. * WHERE...Mendocino Coast. * WHEN...Until 4 AM PST Friday. * IMPACTS...Wind gusts will be particularly strong along windward ridges and exposed coastal headlands. There is an increased risk of tree branches and other debris on roadways. Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. PRECAUTIONARY/PREPAREDNESS ACTIONS... Winds this strong can make driving difficult, especially for high profile vehicles. Use extra caution. Secure outdoor objects. && $$ CAZ101>106-211400- /O.CON.KEKA.HW.A.0006.241122T0000Z-241122T1200Z/ Coastal Del Norte-Del Norte Interior-Northern Humboldt Coast- Southwestern Humboldt-Northern Humboldt Interior-Southern Humboldt Interior- Including Crescent City, Benbow, Fernbridge, Ferndale, Ettersburg, Hoopa, Pepperwood, Ft Dick, Petrolia, Weitchpec, Orleans, Gasquet, Whitethorn, Alderpoint, Briceland, Shelter Cove, Fieldbrook, Smith River, Klamath, Samoa, Garberville, Fortuna, Arcata, Bridgeville, Kneeland, Shively, Eureka, Dinsmore, Trinidad, Bull Creek, McKinleyville, Honeydew, and Willow Creek 951 PM PST Wed Nov 20 2024 ...HIGH WIND WATCH REMAINS IN EFFECT FROM THURSDAY AFTERNOON THROUGH LATE THURSDAY NIGHT... * WHAT...South winds 25 to 35 mph with gusts up to 65 mph possible. * WHERE...Del Norte County, and Humboldt County. * WHEN...From Thursday afternoon through late Thursday night. * IMPACTS...Damaging winds could blow down trees and power lines. Widespread power outages are possible. Travel could be difficult, especially for high profile vehicles. Wind gusts will be particularly strong along windward ridges and exposed coastal headlands. There is an increased risk of tree branches and other debris on roadways. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor the latest forecasts and warnings for updates. Fasten loose objects or shelter objects in a safe location prior to the onset of winds. && $$ For hazard areas see https://www.wrh.noaa.gov/map/?wfo=eka MKK
What forecasters said that day
The local office's own words before this wind advisory 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 wind advisory went out at Nov 18, 4:05 PM PST, 12 hours 12 minutes earlier.
Area forecast discussion, Nov 18, 4:05 PM PST, 12 hours 12 minutes before
AREA FORECAST DISCUSSION...CORRECTED
National Weather Service Eureka
CA 405 PM PST Mon Nov 18 2024
.SYNOPSIS...Scattered showers continue to move onshore along the
coast today. Strong winds develop Tuesday afternoon and evening as
the next storm approaches. Steady, moderate rain, with embedded
heavy rainfall is forecast Wednesday into next weekend. Heavy
snow is possible in NE Trinity Wednesday.
&&
.DISCUSSION...Latest IR satellite imagery depicts a large swath
of cool cloud tops and convective showers over the NEPAC this
afternoon. Isolated showers continue this afternoon, and isolated
to scattered showers will continue tonight. Some showers and
thunderstorms contained small hail today. Local observations show
snow levels currently around 2500 ft, and these are and these are
forecast to slowly rise to 3k to 3.5k ft through this evening.
Shower activity should weaken late tonight as warm air advection
in advance of the next storm begins.
A significantly more potent storm system is forecast to impact the
region tomorrow through this weekend. Ensemble guidance continues to
hold steady on the general pattern, with all clusters depicting an
atmospheric river developing offshore Tuesday and parking itself
over NWRN CA Tuesday night through late in the week, possibly into
the weekend. This will bring a prolonged period of moderate rainfall
with an initial threat of small stream and urban flooding
Wednesday and Thursday, and potentially main stem river concerns
later in the week. A flood watch has been issued for most of the
area in response, see the Hydrology section for more details.
The initial front is forecast to bring a tight pressure gradient to
the coastal counties with very strong southerly winds Tuesday
evening. Sustained winds of 35 to 45 mph with gusts of 60 to 70 mph
are expected on exposed ridges, coastal headlands, and portions of
the coastal plain in Humboldt and Del Norte counties. A High Wind
Warning has been issued for these areas, as downed trees, power
outages, and difficult travel conditions are likely. The strongest
winds are expected just ahead of the frontal passage, as incoming
rain mixes down stronger winds present just above the surface...this
is currently forecast to occur late Tuesday night. Winds then weaken
but remain southerly around 10 to 20 kts behind the front on
Wednesday.
Meanwhile, a few deterministic models (GFS, NAM, ECMWF) continue to
depict cold air getting trapped in Trinity county on Tuesday night
and Wednesday morning as this system approaches, which may allow for
heavy snow in the northeastern portions of Trinity county before
warmer air can move in. This looks most likely east of the Alps and
around Trinity Lake, as well as over Buckhorn Summit and Oregon Mtn,
however may reach as far south as Highway 36. Some uncertainty
remains on just how low snow levels will get. Most guidance agrees
they'll reach at least 3000 ft in NE Trinity Wednesday morning, and
a small but significant portion of the guidance indicates heavy snow
down to Weaverville at this time. Thus have expanded the watch to
include areas above 2000 ft. Some guidance also indicates this
colder air at the surface may linger through Wednesday into Thursday
around Trinity Lake and in the Horn...which means heavy snow could
continue for over 24 hrs on portions of Highway 3 north of
Weaverville. Should this occur, one to multiple feet of snow are
possible Wednesday and Thursday on portions of Highway 3 and 299.
This could significantly impact travel Wednesday. Confidence is
lower on snow levels for areas to the south and east, but there's
about a 50% chance over over 6 inches of snow falling on portions
of Highway 36 east of Forest Glen, so have expanded the Winter
Storm Watch to include these areas.
A secondary surface cyclone will form along the parent trough
Thursday and sweep by the coast through Thursday night. This
second system looks to better align the highest moisture flux and
IVT values Thursday and Thursday night, or into Friday morning.
Winds and precipitation have trended stronger for this system,
and it now looks like some of the highest rainfall rates may fall
through that period for some locations. This portion of the
forecast needs to also be watched closely since grounds will be
further saturated. WPC holds a Moderate Risk for flash flooding
Wednesday and Thursday, and trees and loosened branches weakened
from Tuesday and Wednesday's winds may be more prone to falling.
Clusters are not resolved on the final departure of the troughs
and rainfall period, which potentially lingers into the weekend.
TDJ/JJW
&&
.AVIATION...Since late morning, a few weather perturbations have been
responsible for a progression of convection across the North Coast.
Showers and a couple of thunderstorms (at/vicinity of the coastal
locations) often impacted the Taf sites. Small hail and lightning
were captured by radar, satellite and/or ground truth observations.
However, Cig/Vis generally remained VFR except in a few moderate-
heavy downpours. Winds became more southerly at the coast after
noonday, but were mostly west to northwest over the inland valleys
such as UKI. Showers will be 'here and there' throughout the
evening. Another approaching frontal system on Tuesday will bring
more significant weather conditions to the air terminals; Cig/Vis
will be more impacting with ongoing rains, and southeast-south
surface winds will rev up substantially. Rain will spread across the
entire region. /TA
&&
.MARINE...Winds have a had a brief reprieve before an actual storm
arrives. Winds veer southerly tonight as a storm approaches. Storm
warnings have been hoisted as winds ramp up before Tuesday afternoon
ahead of an approaching front. Storm force wind gusts (48 - 63kts)
with isolated areas reaching Hurricane force gusts (>64kts) in the
northern outer waters will make for treacherous, unruly conditions.
This will spread to all area waters as Wednesday evening approaches,
and so SR.W has been hoisted for all area waters through early
Wednesday morning.
Significant wave heights will be further elevated to 22 to 27 feet
at 12 to 13 seconds early Wednesday morning in response to these
winds. Northern zones will likely see the larger end of these wave
heights corresponding to the strongest winds offshore, while the
southern waters will experience slightly reduced 18 to 22 foot wave
heights. An additional near-shore swell will maintain 12 to 14 foot
seas through late week even as the most severe winds diminish.
/JMM /EYS
&&
.HYDROLOGY...A moderate to strong atmospheric river is forecast
to move over NWRN CA late Tuesday and persist through the rest of
the week. NAEFS mean IVT is showing a prolonged period of
anomalously high values (500 to 800 kg/ms) from the SW,
perpendicular to the local terrain. This will likely lead to a
prolonged period of persistent rainfall this week, further enhanced
by the local orography. Latest QPF guidance is showing 4 to 8 inches
of precip falling Wednesday and Thursday across the CWA from Tuesday
night through Thursday night, with rain likely continuing into the
weekend.
Latest MRMS soil moisture modeling is indicating 50% to 70%
saturated soils at the moment in Humboldt and Del Norte, with 20% to
30% in Mendocino and Lake Counties. Thus the initial bands of precip
late Tuesday night and Wednesday likely will be absorbed, however
with the prolonged nature of this incoming system, saturation is
likely, leading to enhanced runoff. This may initially lead to small
streams and creeks flooding, as well as flooding in urban areas.
Main stem rivers are forecast to respond late this week to the
persistent rainfall as well, however just how high they will reach
remains uncertain.
&&
.EKA WATCHES/WARNINGS/ADVISORIES...
CA...
High Wind Warning from 4 PM Tuesday to 2 AM PST Wednesday
for CAZ101-102.
Flood Watch from late Tuesday night through late Thursday
night for CAZ101>106-108>115.
High Wind Warning from 7 PM Tuesday to 4 AM PST Wednesday
for CAZ103-105-106.
High Wind Warning from 4 PM Tuesday to 6 AM PST Wednesday
for CAZ104.
Winter Storm Warning from 4 PM Tuesday to 9 PM PST
Wednesday for CAZ107.
Winter Storm Warning from 4 PM Tuesday to 4 AM PST
Wednesday for CAZ108.
NORTHWEST CALIFORNIA COASTAL WATERS...
Small Craft Advisory until 3 PM PST Tuesday for PZZ450-455-
475.
Storm Warning from 3 PM Tuesday to 3 AM PST Wednesday for
PZZ450-455-475.
Small Craft Advisory until 9 AM PST Tuesday for PZZ470.
Storm Warning from 9 AM Tuesday to 3 AM 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.pngThe office that day
Everything else NWS Eureka, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Nov 19, 10:49 AM PST | River Flood Watch | EKA | Humboldt | 46 hr |
Nearby
Wind Advisories in California, 2024Every wind advisory in 2024
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.