Alert archive / California / Freeze Warnings in 2017
Freeze Warning 8, NWS Eureka, CA
NWS Eureka, CA issued this freeze warning at Oct 12, 2017, 2:54 PM PDT for Mendocino County, Trinity County, California. It took effect at Oct 13, 2017, 1:00 AM PDT. It was in force for 9 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
- Oct 12, 2017, 2:54 PM PDT (21:54 UTC)
- In effect from
- Oct 13, 2017, 1:00 AM PDT
- Expired
- Oct 13, 2017, 10:00 AM PDT
- In force
- 9 hr
- Issued by
- NWS Eureka, CA
Counties Mendocino County, CA, Trinity County, CA
The nearest sounding before it
Medford/Jackson, OR (KMFR), launched 12:00Z, 9.9 hours before the alert went out and 262 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
- 689 m above ground
- 0-6 km bulk shear
- 37 kt
- 0-1 km storm-relative helicity
- 13 m²/s²
- 0-3 km storm-relative helicity
- 49 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
958 WWUS76 KEKA 122154 NPWEKA URGENT - WEATHER MESSAGE National Weather Service Eureka CA 254 PM PDT Thu Oct 12 2017 CAZ107-108-110-111-131100- /O.NEW.KEKA.FZ.W.0008.171013T0800Z-171013T1600Z/ Northern Trinity-Southern Trinity-Northwestern Mendocino Interior- Northeastern Mendocino Interior- 254 PM PDT Thu Oct 12 2017 ...FREEZE WARNING IN EFFECT FROM 1 AM TO 9 AM PDT FRIDAY... The National Weather Service in Eureka has issued a Freeze Warning...which is in effect from 1 AM to 9 AM PDT Friday. * LOW TEMPERATURES...Upper 20s to lower 30s. * LOCATIONS INCLUDE...Weaverville...Douglas City...Trinity Center...Hayfork...Ruth...Leggett...Willits...Covelo. * FOR A DETAILED VIEW OF THE HAZARD AREA...visit http://www.wrh.noaa.gov/map PRECAUTIONARY/PREPAREDNESS ACTIONS... A Freeze Warning means sub-freezing temperatures are imminent or highly likely. These conditions will kill crops and other sensitive vegetation. && $$ CAZ102-105-106-113-131100- /O.NEW.KEKA.FR.Y.0024.171013T0800Z-171013T1600Z/ Del Norte Interior-Northern Humboldt Interior- Southern Humboldt Interior-Southeastern Mendocino Interior- 254 PM PDT Thu Oct 12 2017 ...FROST ADVISORY IN EFFECT FROM 1 AM TO 9 AM PDT FRIDAY... The National Weather Service in Eureka has issued a Frost Advisory...which is in effect from 1 AM to 9 AM PDT Friday. * TEMPERATURES...Low to mid 30s. * LOCATIONS INCLUDE...Gasquet...Orleans...Willow Creek... Garberville...Bridgeville...Ukiah...Hopland. * FOR A DETAILED VIEW OF THE HAZARD AREA...visit http://www.wrh.noaa.gov/map PRECAUTIONARY/PREPAREDNESS ACTIONS... A Frost Advisory means that frost is possible. Sensitive outdoor plants may be killed if left uncovered. && $$
3 follow-up statements
223 WWUS76 KEKA 131053 NPWEKA URGENT - WEATHER MESSAGE National Weather Service Eureka CA 353 AM PDT Fri Oct 13 2017 CAZ107-108-110-111-131600- /O.CON.KEKA.FZ.W.0008.000000T0000Z-171013T1600Z/ Northern Trinity-Southern Trinity-Northwestern Mendocino Interior- Northeastern Mendocino Interior- 353 AM PDT Fri Oct 13 2017 ...FREEZE WARNING REMAINS IN EFFECT UNTIL 9 AM PDT THIS MORNING... * LOW TEMPERATURES...Upper 20s to lower 30s. * LOCATIONS INCLUDE...Weaverville...Douglas City...Trinity Center...Hayfork...Ruth...Leggett...Willits...Covelo. * FOR A DETAILED VIEW OF THE HAZARD AREA...visit http://www.wrh.noaa.gov/map $$ CAZ102-105-106-113-131600- /O.CON.KEKA.FR.Y.0024.000000T0000Z-171013T1600Z/ Del Norte Interior-Northern Humboldt Interior- Southern Humboldt Interior-Southeastern Mendocino Interior- 353 AM PDT Fri Oct 13 2017 ...FROST ADVISORY REMAINS IN EFFECT UNTIL 9 AM PDT THIS MORNING... * TEMPERATURES...Low to mid 30s. * LOCATIONS INCLUDE...Gasquet...Orleans...Willow Creek... Garberville...Bridgeville...Ukiah...Hopland. * FOR A DETAILED VIEW OF THE HAZARD AREA...visit http://www.wrh.noaa.gov/map $$
630 WWUS76 KEKA 131547 NPWEKA URGENT - WEATHER MESSAGE National Weather Service Eureka CA 847 AM PDT Fri Oct 13 2017 CAZ107-108-110-111-131700- /O.EXT.KEKA.FZ.W.0008.000000T0000Z-171013T1700Z/ Northern Trinity-Southern Trinity-Northwestern Mendocino Interior- Northeastern Mendocino Interior- 847 AM PDT Fri Oct 13 2017 ...FREEZE WARNING NOW IN EFFECT UNTIL 10 AM PDT THIS MORNING... * LOW TEMPERATURES...Upper 20s to lower 30s. * LOCATIONS INCLUDE...Weaverville...Douglas City...Trinity Center...Hayfork...Ruth...Leggett...Willits...Covelo. * FOR A DETAILED VIEW OF THE HAZARD AREA...visit http://www.wrh.noaa.gov/map $$ CAZ102-105-106-113-131700- /O.EXT.KEKA.FR.Y.0024.000000T0000Z-171013T1700Z/ Del Norte Interior-Northern Humboldt Interior- Southern Humboldt Interior-Southeastern Mendocino Interior- 847 AM PDT Fri Oct 13 2017 ...FROST ADVISORY NOW IN EFFECT UNTIL 10 AM PDT THIS MORNING... * TEMPERATURES...Low to mid 30s. * LOCATIONS INCLUDE...Gasquet...Orleans...Willow Creek... Garberville...Bridgeville...Ukiah...Hopland. * FOR A DETAILED VIEW OF THE HAZARD AREA...visit http://www.wrh.noaa.gov/map $$
438 WWUS76 KEKA 131645 NPWEKA URGENT - WEATHER MESSAGE National Weather Service Eureka CA 945 AM PDT Fri Oct 13 2017 CAZ107-108-110-111-131745- /O.EXP.KEKA.FZ.W.0008.000000T0000Z-171013T1700Z/ Northern Trinity-Southern Trinity-Northwestern Mendocino Interior- Northeastern Mendocino Interior- 945 AM PDT Fri Oct 13 2017 ...FREEZE WARNING WILL EXPIRE AT 10 AM PDT THIS MORNING... $$ CAZ102-105-106-113-131745- /O.EXP.KEKA.FR.Y.0024.000000T0000Z-171013T1700Z/ Del Norte Interior-Northern Humboldt Interior- Southern Humboldt Interior-Southeastern Mendocino Interior- 945 AM PDT Fri Oct 13 2017 ...FROST ADVISORY WILL EXPIRE AT 10 AM PDT THIS MORNING... $$
The office that day
Everything else NWS Eureka, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 12, 2:22 PM PDT | Gale Watch | EKA | 30 hr | |
| Oct 12, 2:54 PM PDT | Frost Advisory | EKA | Del Norte, Humboldt, Mendocino | 19 hr |
Nearby
Freeze Warnings in California, 2017Every freeze warning in 2017
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.