Alert archive / California / Freeze Warnings in 2021
Freeze Warning 24, NWS Eureka, CA
NWS Eureka, CA issued this freeze warning at Dec 9, 2021, 3:23 AM PST for Humboldt County, Mendocino County, California. It took effect at Dec 10, 2021, 1:00 AM PST. It was in force for 8 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
- Dec 9, 2021, 3:23 AM PST (11:23 UTC)
- In effect from
- Dec 10, 2021, 1:00 AM PST
- Expired
- Dec 10, 2021, 9:00 AM PST
- In force
- 8 hr
- Issued by
- NWS Eureka, CA
Counties Humboldt County, CA, Mendocino County, CA
The radar
The Eureka (Bunker Hill) radar (KBHX), 71 km from the middle of the area, began a volume at 11:25 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 00:00Z, 11.4 hours before the alert went out and 266 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
- 15 J/kg
- Mixed-layer CIN
- -5 J/kg
- Mixed-layer LCL
- 735 m above ground
- 0-6 km bulk shear
- 81 kt
- 0-1 km storm-relative helicity
- 26 m²/s²
- 0-3 km storm-relative helicity
- 25 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
694 WWUS76 KEKA 091123 NPWEKA URGENT - WEATHER MESSAGE National Weather Service Eureka CA 323 AM PST Thu Dec 9 2021 CAZ102-091230- /O.CAN.KEKA.FZ.A.0012.211210T0900Z-211210T1700Z/ Del Norte Interior- 323 AM PST Thu Dec 9 2021 ...FREEZE WATCH IS CANCELLED... More cloud cover than forecasted previously will result in milder temperatures. Some patches of frost may be found in isolated sheltered valleys in the Del Norte Interior if skies can clear toward morning. $$ CAZ104>106-109-112-113-115-091930- /O.UPG.KEKA.FZ.A.0012.211210T0900Z-211210T1700Z/ /O.NEW.KEKA.FZ.W.0024.211210T0900Z-211210T1700Z/ Southwestern Humboldt-Northern Humboldt Interior- Southern Humboldt Interior-Mendocino Coast- Southwestern Mendocino Interior-Southeastern Mendocino Interior- Southern Lake- 323 AM PST Thu Dec 9 2021 ...FREEZE WARNING IN EFFECT FROM 1 AM TO 9 AM PST FRIDAY... * WHAT...Sub-freezing temperatures in the low 30s and upper 20s expected. * WHERE...Inland valleys in Southwestern Humboldt, Northern Humboldt Interior, Southern Humboldt Interior, Mendocino Coast, Southwestern Mendocino Interior, Southeastern Mendocino Interior and Southern Lake Counties. * WHEN...From 1 AM to 9 AM PST Friday. * IMPACTS...Frost and freeze conditions will kill crops and other sensitive vegetation. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. Provide adequate shelter for outdoor pets or consider bringing them indoors. Frost Advisories and Freeze Warnings are issued during the local growing season as defined by climatology and local agriculture experts. Once the growing season has ended these statements will no longer be issued until the spring. && $$
7 follow-up statements
744 WWUS76 KEKA 091928 NPWEKA URGENT - WEATHER MESSAGE National Weather Service Eureka CA 1128 AM PST Thu Dec 9 2021 CAZ104>106-109-112-113-115-100330- /O.CON.KEKA.FZ.W.0024.211210T0900Z-211210T1700Z/ Southwestern Humboldt-Northern Humboldt Interior- Southern Humboldt Interior-Mendocino Coast- Southwestern Mendocino Interior-Southeastern Mendocino Interior- Southern Lake- 1128 AM PST Thu Dec 9 2021 ...FREEZE WARNING REMAINS IN EFFECT FROM 1 AM TO 9 AM PST FRIDAY... * WHAT...Sub-freezing temperatures in the low 30s and upper 20s expected. * WHERE...Inland valleys in Southwestern Humboldt, Northern Humboldt Interior, Southern Humboldt Interior, Mendocino Coast, Southwestern Mendocino Interior, Southeastern Mendocino Interior and Southern Lake Counties. * WHEN...From 1 AM to 9 AM PST Friday. * IMPACTS...Frost and freeze conditions will kill crops and other sensitive vegetation. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. Provide adequate shelter for outdoor pets or consider bringing them indoors. Frost Advisories and Freeze Warnings are issued during the local growing season as defined by climatology and local agriculture experts. Once the growing season has ended these statements will no longer be issued until the spring. && $$
739 WWUS76 KEKA 092054 NPWEKA URGENT - WEATHER MESSAGE National Weather Service Eureka CA 1254 PM PST Thu Dec 9 2021 CAZ104>106-109-112-113-115-100500- /O.CON.KEKA.FZ.W.0024.211210T0900Z-211210T1700Z/ Southwestern Humboldt-Northern Humboldt Interior- Southern Humboldt Interior-Mendocino Coast- Southwestern Mendocino Interior-Southeastern Mendocino Interior- Southern Lake- 1254 PM PST Thu Dec 9 2021 ...FREEZE WARNING REMAINS IN EFFECT FROM 1 AM TO 9 AM PST FRIDAY... * WHAT...Sub-freezing temperatures as low as 27 expected. * WHERE...Mendocino Coast, Southwestern Mendocino Interior, Southeastern Mendocino Interior, Northern Humboldt Interior, Southwestern Humboldt, Southern Humboldt Interior and Southern Lake Counties. * WHEN...From 1 AM to 9 AM PST Friday. * IMPACTS...Frost and freeze conditions will kill crops and other sensitive vegetation. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. Provide adequate shelter for outdoor pets or consider bringing them indoors. Frost Advisories and Freeze Warnings are issued during the local growing season as defined by climatology and local agriculture experts. Once the growing season has ended these statements will no longer be issued until the spring. && $$ CAZ102-100500- /O.NEW.KEKA.FR.Y.0058.211210T0900Z-211210T1700Z/ Del Norte Interior- 1254 PM PST Thu Dec 9 2021 ...FROST ADVISORY IN EFFECT FROM 1 AM TO 9 AM PST FRIDAY... * WHAT...Temperatures as low as 33 will result in frost formation. * WHERE...Del Norte Interior County. * WHEN...From 1 AM to 9 AM PST Friday. * IMPACTS...Frost could kill sensitive outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. Frost Advisories and Freeze Warnings are issued during the local growing season as defined by climatology and local agriculture experts. Once the growing season has ended these statements will no longer be issued until the spring. && $$
151 WWUS76 KEKA 100131 NPWEKA URGENT - WEATHER MESSAGE National Weather Service Eureka CA 531 PM PST Thu Dec 9 2021 CAZ104>106-109-112-113-115-100945- /O.CON.KEKA.FZ.W.0024.211210T0900Z-211210T1700Z/ Southwestern Humboldt-Northern Humboldt Interior- Southern Humboldt Interior-Mendocino Coast- Southwestern Mendocino Interior-Southeastern Mendocino Interior- Southern Lake- 531 PM PST Thu Dec 9 2021 ...FREEZE WARNING REMAINS IN EFFECT FROM 1 AM TO 9 AM PST FRIDAY... * WHAT...Sub-freezing temperatures as low as 26 expected. * WHERE...Mendocino Coast, Southeastern Mendocino Interior, Northern Humboldt Interior, Southwestern Humboldt, Southern Humboldt Interior, Southwestern Mendocino Interior and Southern Lake Counties. * WHEN...From 1 AM to 9 AM PST Friday. * IMPACTS...Frost and freeze conditions will kill crops and other sensitive vegetation. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. Provide adequate shelter for outdoor pets or consider bringing them indoors. Frost Advisories and Freeze Warnings are issued during the local growing season as defined by climatology and local agriculture experts. Once the growing season has ended these statements will no longer be issued until the spring. && $$ CAZ101-100945- /O.NEW.KEKA.WI.Y.0019.211211T1800Z-211212T0300Z/ Coastal Del Norte- 531 PM PST Thu Dec 9 2021 ...WIND ADVISORY IN EFFECT FROM 10 AM TO 7 PM PST SATURDAY... * WHAT...South winds 20 to 30 mph with gusts up to 55 mph expected. * WHERE...Coastal Del Norte County. * WHEN...From 10 AM to 7 PM PST Saturday. * IMPACTS...Gusty winds could blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. && $$ CAZ102-100945- /O.CON.KEKA.FR.Y.0058.211210T0900Z-211210T1700Z/ Del Norte Interior- 531 PM PST Thu Dec 9 2021 ...FROST ADVISORY REMAINS IN EFFECT FROM 1 AM TO 9 AM PST FRIDAY... * WHAT...Temperatures as low as 33 will result in frost formation. * WHERE...Del Norte Interior County. * WHEN...From 1 AM to 9 AM PST Friday. * IMPACTS...Frost could kill sensitive outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. Frost Advisories and Freeze Warnings are issued during the local growing season as defined by climatology and local agriculture experts. Once the growing season has ended these statements will no longer be issued until the spring. && $$
681 WWUS76 KEKA 100151 NPWEKA URGENT - WEATHER MESSAGE National Weather Service Eureka CA 551 PM PST Thu Dec 9 2021 CAZ104-101000- /O.EXA.KEKA.FR.Y.0058.211210T0900Z-211210T1700Z/ /O.CON.KEKA.FZ.W.0024.211210T0900Z-211210T1700Z/ Southwestern Humboldt- 551 PM PST Thu Dec 9 2021 ...FREEZE WARNING REMAINS IN EFFECT FROM 1 AM TO 9 AM PST FRIDAY... * WHAT...For the Freeze Warning, sub-freezing temperatures as low as 32 expected. * WHERE...Southwestern Humboldt County. * WHEN...From 1 AM to 9 AM PST Friday. * IMPACTS...Frost and freeze conditions will kill crops and other sensitive vegetation. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. Provide adequate shelter for outdoor pets or consider bringing them indoors. Frost Advisories and Freeze Warnings are issued during the local growing season as defined by climatology and local agriculture experts. Once the growing season has ended these statements will no longer be issued until the spring. && $$ CAZ105-106-109-112-113-115-101000- /O.CON.KEKA.FZ.W.0024.211210T0900Z-211210T1700Z/ Northern Humboldt Interior-Southern Humboldt Interior- Mendocino Coast-Southwestern Mendocino Interior- Southeastern Mendocino Interior-Southern Lake- 551 PM PST Thu Dec 9 2021 ...FREEZE WARNING REMAINS IN EFFECT FROM 1 AM TO 9 AM PST FRIDAY... * WHAT...Sub-freezing temperatures as low as 26 expected. * WHERE...Mendocino Coast, Southeastern Mendocino Interior, Northern Humboldt Interior, Southern Humboldt Interior, Southwestern Mendocino Interior and Southern Lake Counties. * WHEN...From 1 AM to 9 AM PST Friday. * IMPACTS...Frost and freeze conditions will kill crops and other sensitive vegetation. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. Provide adequate shelter for outdoor pets or consider bringing them indoors. Frost Advisories and Freeze Warnings are issued during the local growing season as defined by climatology and local agriculture experts. Once the growing season has ended these statements will no longer be issued until the spring. && $$ CAZ101-101000- /O.EXA.KEKA.FR.Y.0058.211210T0900Z-211210T1700Z/ /O.CON.KEKA.WI.Y.0019.211211T1800Z-211212T0300Z/ Coastal Del Norte- 551 PM PST Thu Dec 9 2021 ...FROST ADVISORY IN EFFECT FROM 1 AM TO 9 AM PST FRIDAY... ...WIND ADVISORY REMAINS IN EFFECT FROM 10 AM TO 7 PM PST SATURDAY... * WHAT...For the Frost Advisory, temperatures as low as 35 will result in frost formation. For the Wind Advisory, south winds 20 to 30 mph with gusts up to 55 mph expected. * WHERE...Coastal Del Norte County. * WHEN...For the Frost Advisory, from 1 AM to 9 AM PST Friday. For the Wind Advisory, from 10 AM to 7 PM PST Saturday. * IMPACTS...Gusty winds could blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. Frost could kill sensitive outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. Take steps now to protect tender plants from the cold. Frost Advisories and Freeze Warnings are issued during the local growing season as defined by climatology and local agriculture experts. Once the growing season has ended these statements will no longer be issued until the spring. && $$ CAZ103-101000- /O.EXA.KEKA.FR.Y.0058.211210T0900Z-211210T1700Z/ Northern Humboldt Coast- 551 PM PST Thu Dec 9 2021 ...FROST ADVISORY IN EFFECT FROM 1 AM TO 9 AM PST FRIDAY... * WHAT...Temperatures as low as 33 will result in frost formation. * WHERE...Northern Humboldt Coast County. * WHEN...From 1 AM to 9 AM PST Friday. * IMPACTS...Frost could kill sensitive outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. Frost Advisories and Freeze Warnings are issued during the local growing season as defined by climatology and local agriculture experts. Once the growing season has ended these statements will no longer be issued until the spring. && $$ CAZ102-101000- /O.CON.KEKA.FR.Y.0058.211210T0900Z-211210T1700Z/ Del Norte Interior- 551 PM PST Thu Dec 9 2021 ...FROST ADVISORY REMAINS IN EFFECT FROM 1 AM TO 9 AM PST FRIDAY... * WHAT...Temperatures as low as 33 will result in frost formation. * WHERE...Del Norte Interior County. * WHEN...From 1 AM to 9 AM PST Friday. * IMPACTS...Frost could kill sensitive outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. Frost Advisories and Freeze Warnings are issued during the local growing season as defined by climatology and local agriculture experts. Once the growing season has ended these statements will no longer be issued until the spring. && $$
120 WWUS76 KEKA 100648 NPWEKA URGENT - WEATHER MESSAGE National Weather Service Eureka CA 1048 PM PST Thu Dec 9 2021 CAZ104-101500- /O.CON.KEKA.FZ.W.0024.211210T0900Z-211210T1700Z/ /O.CON.KEKA.FR.Y.0058.211210T0900Z-211210T1700Z/ Southwestern Humboldt- 1048 PM PST Thu Dec 9 2021 ...FREEZE WARNING REMAINS IN EFFECT UNTIL 9 AM PST FRIDAY... * WHAT...Sub-freezing temperatures as low as 32 expected. * WHERE...Southwestern Humboldt County. * WHEN...Until 9 AM PST Friday. * IMPACTS...Frost and freeze conditions will kill crops and other sensitive vegetation. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. Provide adequate shelter for outdoor pets or consider bringing them indoors. Frost Advisories and Freeze Warnings are issued during the local growing season as defined by climatology and local agriculture experts. Once the growing season has ended these statements will no longer be issued until the spring. && $$ CAZ105-106-109-112-113-115-101500- /O.CON.KEKA.FZ.W.0024.211210T0900Z-211210T1700Z/ Northern Humboldt Interior-Southern Humboldt Interior- Mendocino Coast-Southwestern Mendocino Interior- Southeastern Mendocino Interior-Southern Lake- 1048 PM PST Thu Dec 9 2021 ...FREEZE WARNING REMAINS IN EFFECT UNTIL 9 AM PST FRIDAY... * WHAT...Sub-freezing temperatures as low as 29 expected. * WHERE...Mendocino Coast, Southeastern Mendocino Interior, Northern Humboldt Interior, Southern Humboldt Interior, Southwestern Mendocino Interior and Southern Lake Counties. * WHEN...Until 9 AM PST Friday. * IMPACTS...Frost and freeze conditions will kill crops and other sensitive vegetation. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. Provide adequate shelter for outdoor pets or consider bringing them indoors. Frost Advisories and Freeze Warnings are issued during the local growing season as defined by climatology and local agriculture experts. Once the growing season has ended these statements will no longer be issued until the spring. && $$ CAZ101-101500- /O.CON.KEKA.FR.Y.0058.211210T0900Z-211210T1700Z/ /O.CON.KEKA.WI.Y.0019.211211T1800Z-211212T0300Z/ Coastal Del Norte- 1048 PM PST Thu Dec 9 2021 ...FROST ADVISORY REMAINS IN EFFECT UNTIL 9 AM PST FRIDAY... ...WIND ADVISORY REMAINS IN EFFECT FROM 10 AM TO 7 PM PST SATURDAY... * WHAT...For the Frost Advisory, temperatures as low as 34 will result in frost formation. For the Wind Advisory, south winds 20 to 30 mph with gusts up to 55 mph expected. * WHERE...Coastal Del Norte County. * WHEN...For the Frost Advisory, until 9 AM PST Friday. For the Wind Advisory, from 10 AM to 7 PM PST Saturday. * IMPACTS...Gusty winds could blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. Frost could kill sensitive outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. Take steps now to protect tender plants from the cold. Frost Advisories and Freeze Warnings are issued during the local growing season as defined by climatology and local agriculture experts. Once the growing season has ended these statements will no longer be issued until the spring. && $$ CAZ102-103-101500- /O.CON.KEKA.FR.Y.0058.211210T0900Z-211210T1700Z/ Del Norte Interior-Northern Humboldt Coast- 1048 PM PST Thu Dec 9 2021 ...FROST ADVISORY REMAINS IN EFFECT UNTIL 9 AM PST FRIDAY... * WHAT...Temperatures as low as 33 will result in frost formation. * WHERE...Northern Humboldt Coast and Del Norte Interior Counties. * WHEN...Until 9 AM PST Friday. * IMPACTS...Frost could kill sensitive outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. Frost Advisories and Freeze Warnings are issued during the local growing season as defined by climatology and local agriculture experts. Once the growing season has ended these statements will no longer be issued until the spring. && $$
744 WWUS76 KEKA 101237 NPWEKA URGENT - WEATHER MESSAGE National Weather Service Eureka CA 437 AM PST Fri Dec 10 2021 CAZ104-102045- /O.EXB.KEKA.WI.Y.0019.211211T1700Z-211212T0600Z/ /O.CON.KEKA.FZ.W.0024.000000T0000Z-211210T1700Z/ /O.CON.KEKA.FR.Y.0058.000000T0000Z-211210T1700Z/ Southwestern Humboldt- 437 AM PST Fri Dec 10 2021 ...FREEZE WARNING REMAINS IN EFFECT UNTIL 9 AM PST THIS MORNING... ...WIND ADVISORY IN EFFECT FROM 9 AM TO 10 PM PST SATURDAY ABOVE 1500 FEET... * WHAT...For the Freeze Warning, sub-freezing temperatures as low as 32. For the Wind Advisory above 1500 feet, south winds 20 to 30 mph with gusts 45 to 55 mph expected. * WHERE...Southwestern Humboldt County. * WHEN...For the Freeze Warning, until 9 AM PST this morning. For the Wind Advisory, from 9 AM to 10 PM PST Saturday. * IMPACTS...Gusty winds could blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. Frost and freeze conditions will kill crops and other sensitive vegetation. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. Take steps now to protect tender plants from the cold. Provide adequate shelter for outdoor pets or consider bringing them indoors. Frost Advisories and Freeze Warnings are issued during the local growing season as defined by climatology and local agriculture experts. Once the growing season has ended these statements will no longer be issued until the spring. && $$ CAZ105-106-102045- /O.EXB.KEKA.WI.Y.0019.211211T1700Z-211212T0600Z/ /O.CON.KEKA.FZ.W.0024.000000T0000Z-211210T1700Z/ Northern Humboldt Interior-Southern Humboldt Interior- 437 AM PST Fri Dec 10 2021 ...FREEZE WARNING REMAINS IN EFFECT UNTIL 9 AM PST THIS MORNING... ...WIND ADVISORY IN EFFECT FROM 9 AM TO 10 PM PST SATURDAY ABOVE 1500 FEET... * WHAT...For the Freeze Warning, sub-freezing temperatures as low as 25. For the Wind Advisory above 1500 feet, south winds 20 to 30 mph with gusts up to 50 mph expected. * WHERE...Northern Humboldt Interior and Southern Humboldt Interior Counties. * WHEN...For the Freeze Warning, until 9 AM PST this morning. For the Wind Advisory, from 9 AM to 10 PM PST Saturday. * IMPACTS...Gusty winds could blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. Frost and freeze conditions will kill crops and other sensitive vegetation. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. Take steps now to protect tender plants from the cold. Provide adequate shelter for outdoor pets or consider bringing them indoors. Frost Advisories and Freeze Warnings are issued during the local growing season as defined by climatology and local agriculture experts. Once the growing season has ended these statements will no longer be issued until the spring. && $$ CAZ109-112-113-115-101700- /O.CON.KEKA.FZ.W.0024.000000T0000Z-211210T1700Z/ Mendocino Coast-Southwestern Mendocino Interior- Southeastern Mendocino Interior-Southern Lake- 437 AM PST Fri Dec 10 2021 ...FREEZE WARNING REMAINS IN EFFECT UNTIL 9 AM PST THIS MORNING... * WHAT...Sub-freezing temperatures in the upper 20s to low 30s. * WHERE...Mendocino Coast, Southeastern Mendocino Interior, Southwestern Mendocino Interior and Southern Lake Counties. * WHEN...Until 9 AM PST this morning. * IMPACTS...Frost and freeze conditions will kill crops and other sensitive vegetation. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. Provide adequate shelter for outdoor pets or consider bringing them indoors. Frost Advisories and Freeze Warnings are issued during the local growing season as defined by climatology and local agriculture experts. Once the growing season has ended these statements will no longer be issued until the spring. && $$ CAZ102-102045- /O.EXB.KEKA.WI.Y.0019.211211T1700Z-211212T0600Z/ /O.CON.KEKA.FR.Y.0058.000000T0000Z-211210T1700Z/ Del Norte Interior- 437 AM PST Fri Dec 10 2021 ...FROST ADVISORY REMAINS IN EFFECT UNTIL 9 AM PST THIS MORNING... ...WIND ADVISORY IN EFFECT FROM 9 AM TO 10 PM PST SATURDAY ABOVE 1500 FEET... * WHAT...For the Frost Advisory, temperatures as low as 26 will result in frost formation. For the Wind Advisory above 1500 feet, south winds 25 to 35 mph with gusts up to 60 mph expected on exposed mountain ridges. * WHERE...Del Norte Interior County. * WHEN...For the Frost Advisory, until 9 AM PST this morning. For the Wind Advisory, from 9 AM to 10 PM PST Saturday. * IMPACTS...Gusty winds could blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. Frost could kill sensitive outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. Take steps now to protect tender plants from the cold. Frost Advisories and Freeze Warnings are issued during the local growing season as defined by climatology and local agriculture experts. Once the growing season has ended these statements will no longer be issued until the spring. && $$ CAZ101-102045- /O.EXT.KEKA.WI.Y.0019.211211T1700Z-211212T0600Z/ /O.CON.KEKA.FR.Y.0058.000000T0000Z-211210T1700Z/ Coastal Del Norte- 437 AM PST Fri Dec 10 2021 ...FROST ADVISORY REMAINS IN EFFECT UNTIL 9 AM PST THIS MORNING... ...WIND ADVISORY NOW IN EFFECT FROM 9 AM TO 10 PM PST SATURDAY... * WHAT...For the Frost Advisory, temperatures as low as 34 will result in frost formation. For the Wind Advisory, south winds 20 to 30 mph with gusts up to 50 mph expected. * WHERE...Coastal Del Norte County. * WHEN...For the Frost Advisory, until 9 AM PST this morning. For the Wind Advisory, from 9 AM to 10 PM PST Saturday. * IMPACTS...Gusty winds could blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. Frost could kill sensitive outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. Take steps now to protect tender plants from the cold. Frost Advisories and Freeze Warnings are issued during the local growing season as defined by climatology and local agriculture experts. Once the growing season has ended these statements will no longer be issued until the spring. && $$ CAZ103-101700- /O.CON.KEKA.FR.Y.0058.000000T0000Z-211210T1700Z/ Northern Humboldt Coast- 437 AM PST Fri Dec 10 2021 ...FROST ADVISORY REMAINS IN EFFECT UNTIL 9 AM PST THIS MORNING... * WHAT...Temperatures as low as 34 will result in frost formation. * WHERE...Northern Humboldt Coast County. * WHEN...Until 9 AM PST this morning. * IMPACTS...Frost could kill sensitive outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. Frost Advisories and Freeze Warnings are issued during the local growing season as defined by climatology and local agriculture experts. Once the growing season has ended these statements will no longer be issued until the spring. && $$
280 WWUS76 KEKA 101648 NPWEKA URGENT - WEATHER MESSAGE National Weather Service Eureka CA 848 AM PST Fri Dec 10 2021 CAZ104-110100- /O.EXP.KEKA.FZ.W.0024.000000T0000Z-211210T1700Z/ /O.EXP.KEKA.FR.Y.0058.000000T0000Z-211210T1700Z/ /O.CON.KEKA.WI.Y.0019.211211T1700Z-211212T0600Z/ Southwestern Humboldt- 848 AM PST Fri Dec 10 2021 ...WIND ADVISORY REMAINS IN EFFECT FROM 9 AM TO 10 PM PST SATURDAY ABOVE 1500 FEET... ...FREEZE WARNING WILL EXPIRE AT 9 AM PST THIS MORNING... ...FROST ADVISORY WILL EXPIRE AT 9 AM PST THIS MORNING... * WHAT...South winds 20 to 30 mph with gusts up to 55 mph expected above 1500 feet. * WHERE...Southwestern Humboldt County. * WHEN...For the Freeze Warning, until 9 AM PST this morning. For the Wind Advisory, from 9 AM to 10 PM PST Saturday. * IMPACTS...Gusty winds could blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. && $$ CAZ105-106-110100- /O.EXP.KEKA.FZ.W.0024.000000T0000Z-211210T1700Z/ /O.CON.KEKA.WI.Y.0019.211211T1700Z-211212T0600Z/ Northern Humboldt Interior-Southern Humboldt Interior- 848 AM PST Fri Dec 10 2021 ...WIND ADVISORY REMAINS IN EFFECT FROM 9 AM TO 10 PM PST SATURDAY ABOVE 1500 FEET... ...FREEZE WARNING WILL EXPIRE AT 9 AM PST THIS MORNING... * WHAT...South winds 20 to 30 mph with gusts up to 50 mph expected above 1500 feet. * WHERE...Northern Humboldt Interior and Southern Humboldt Interior Counties. * WHEN...For the Freeze Warning, until 9 AM PST this morning. For the Wind Advisory, from 9 AM to 10 PM PST Saturday. * IMPACTS...Gusty winds could blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. && $$ CAZ109-112-113-115-101800- /O.EXP.KEKA.FZ.W.0024.000000T0000Z-211210T1700Z/ Mendocino Coast-Southwestern Mendocino Interior- Southeastern Mendocino Interior-Southern Lake- 848 AM PST Fri Dec 10 2021 ...FREEZE WARNING WILL EXPIRE AT 9 AM PST THIS MORNING... $$ CAZ101-110100- /O.EXP.KEKA.FR.Y.0058.000000T0000Z-211210T1700Z/ /O.CON.KEKA.WI.Y.0019.211211T1700Z-211212T0600Z/ Coastal Del Norte- 848 AM PST Fri Dec 10 2021 ...WIND ADVISORY REMAINS IN EFFECT FROM 9 AM TO 10 PM PST SATURDAY... ...FROST ADVISORY WILL EXPIRE AT 9 AM PST THIS MORNING... * WHAT...South winds 20 to 30 mph with gusts up to 50 mph expected. * WHERE...Coastal Del Norte County. * WHEN...For the Frost Advisory, until 9 AM PST this morning. For the Wind Advisory, from 9 AM to 10 PM PST Saturday. * IMPACTS...Gusty winds could blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. && $$ CAZ102-110100- /O.EXP.KEKA.FR.Y.0058.000000T0000Z-211210T1700Z/ /O.CON.KEKA.WI.Y.0019.211211T1700Z-211212T0600Z/ Del Norte Interior- 848 AM PST Fri Dec 10 2021 ...WIND ADVISORY REMAINS IN EFFECT FROM 9 AM TO 10 PM PST SATURDAY ABOVE 1500 FEET... ...FROST ADVISORY WILL EXPIRE AT 9 AM PST THIS MORNING... * WHAT...South winds 25 to 35 mph with gusts up to 60 mph expected above 1500 feet. * WHERE...Del Norte Interior County. * WHEN...For the Frost Advisory, until 9 AM PST this morning. For the Wind Advisory, from 9 AM to 10 PM PST Saturday. * IMPACTS...Gusty winds could blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. && $$ CAZ103-101800- /O.EXP.KEKA.FR.Y.0058.000000T0000Z-211210T1700Z/ Northern Humboldt Coast- 848 AM PST Fri Dec 10 2021 ...FROST ADVISORY WILL EXPIRE AT 9 AM PST THIS MORNING... $$
The office that day
Everything else NWS Eureka, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 9, 12:54 PM PST | Frost Advisory | EKA | Del Norte, Humboldt | 20 hr |
| Dec 9, 2:13 PM PST | Winter Storm Watch | EKA | Humboldt, Trinity | 63 hr |
| Dec 9, 2:32 PM PST | Gale Watch | EKA | 13 hr |
Nearby
Freeze Warnings in California, 2021Every freeze warning in 2021
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.