Alert archive / California / Freeze Warnings in 2016
Freeze Warning 5, NWS Eureka, CA
NWS Eureka, CA issued this freeze warning at Dec 16, 2016, 2:55 PM PST for Del Norte County, Humboldt County, California. It took effect at Dec 17, 2016, 1:00 AM PST. It was in force for 20 min. 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 16, 2016, 2:55 PM PST (22:55 UTC)
- In effect from
- Dec 17, 2016, 1:00 AM PST
- Expired
- Dec 17, 2016, 1:20 AM PST
- In force
- 20 min
- Issued by
- NWS Eureka, CA
Counties Del Norte County, CA, Humboldt County, CA
The radar
The Eureka (Bunker Hill) radar (KBHX), 86 km from the middle of the area, began a volume at 22:54 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
Medford/Jackson, OR (KMFR), launched 12:00Z, 10.9 hours before the alert went out and 158 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
- 9 J/kg
- Mixed-layer CIN
- -8 J/kg
- Mixed-layer LCL
- 963 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- 11 m²/s²
- 0-3 km storm-relative helicity
- 33 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
731 WWUS76 KEKA 162255 NPWEKA URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE EUREKA CA 255 PM PST FRI DEC 16 2016 CAZ104-171200- /O.UPG.KEKA.FR.Y.0021.161217T0900Z-161217T1700Z/ /O.NEW.KEKA.FZ.W.0005.161217T0900Z-161217T1700Z/ SOUTHWESTERN HUMBOLDT- 255 PM PST FRI DEC 16 2016 ...FREEZE WARNING IN EFFECT FROM 1 AM TO 9 AM PST SATURDAY... THE NATIONAL WEATHER SERVICE IN EUREKA HAS ISSUED A FREEZE WARNING...WHICH IS IN EFFECT FROM 1 AM TO 9 AM PST SATURDAY. THE FROST ADVISORY IS NO LONGER IN EFFECT. * LOW TEMPERATURES...LOWER 30S * LOCATIONS INCLUDE...PATROLIA...HONEYDEW...ETTERSBERG. * 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. && $$ CAZ102-105-106-171200- /O.UPG.KEKA.FZ.A.0003.161217T0900Z-161217T1700Z/ /O.NEW.KEKA.HZ.W.0003.161217T0900Z-161217T1700Z/ DEL NORTE INTERIOR-NORTHERN HUMBOLDT INTERIOR- SOUTHERN HUMBOLDT INTERIOR- 255 PM PST FRI DEC 16 2016 ...HARD FREEZE WARNING IN EFFECT FROM 1 AM TO 9 AM PST SATURDAY... THE NATIONAL WEATHER SERVICE IN EUREKA HAS ISSUED A HARD FREEZE WARNING...WHICH IS IN EFFECT FROM 1 AM TO 9 AM PST SATURDAY. THE FREEZE WATCH IS NO LONGER IN EFFECT. * LOW TEMPERATURES...20S. * LOCATIONS INCLUDE...GASQUET...WILLOW CREEK...ORLEANS... GARBERVILLE...BRIDGEVILLE. * FOR A DETAILED VIEW OF THE HAZARD AREA...VISIT HTTP://WWW.WRH.NOAA.GOV/MAP... PRECAUTIONARY/PREPAREDNESS ACTIONS... A HARD FREEZE WARNING MEANS SUB-FREEZING TEMPERATURES ARE IMMINENT OR HIGHLY LIKELY. THESE CONDITIONS WILL KILL CROPS AND OTHER SENSITIVE VEGETATION. && $$ CAZ101-103-171200- /O.UPG.KEKA.FZ.A.0003.161217T0900Z-161217T1700Z/ /O.NEW.KEKA.FZ.W.0005.161217T0900Z-161217T1700Z/ COASTAL DEL NORTE-NORTHERN HUMBOLDT COAST- 255 PM PST FRI DEC 16 2016 ...FREEZE WARNING IN EFFECT FROM 1 AM TO 9 AM PST SATURDAY... THE NATIONAL WEATHER SERVICE IN EUREKA HAS ISSUED A FREEZE WARNING...WHICH IS IN EFFECT FROM 1 AM TO 9 AM PST SATURDAY. THE FREEZE WATCH IS NO LONGER IN EFFECT. * LOW TEMPERATURES...LOWER 30S WITH COLDER VALLEYS DIPPING INTO THE UPPER 20S. * LOCATIONS INCLUDE...CRESCENT CITY...ARCATA...BLUE LAKE..EUREKA...FORTUNA. * 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. && $$ CAZ109-171200- /O.CON.KEKA.FR.Y.0021.161217T0900Z-161217T1700Z/ MENDOCINO COAST- 255 PM PST FRI DEC 16 2016 ...FROST ADVISORY REMAINS IN EFFECT FROM 1 AM TO 9 AM PST SATURDAY... * LOW TEMPERATURES...MID 30S. * LOCATIONS INCLUDE...FORT BRAGG...POINT ARENA. * FOR A DETAILED VIEW OF THE HAZARD AREA...VISIT HTTP://WWW.WRH.NOAA.GOV/MAP PRECAUTIONARY/PREPAREDNESS ACTIONS... A FROST ADVISORY MEANS THAT FROST IS POSSIBLE. SENSITIVE OUTDOOR PLANTS MAY BE KILLED IF LEFT UNCOVERED. && $$
1 follow-up statement
147 WWUS76 KEKA 170920 NPWEKA URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE EUREKA CA 120 AM PST SAT DEC 17 2016 CAZ101-103-104-171700- /O.CAN.KEKA.FZ.W.0005.000000T0000Z-161217T1700Z/ /O.EXA.KEKA.HZ.W.0003.000000T0000Z-161217T1700Z/ COASTAL DEL NORTE-NORTHERN HUMBOLDT COAST-SOUTHWESTERN HUMBOLDT- 120 AM PST SAT DEC 17 2016 ...HARD FREEZE WARNING IN EFFECT UNTIL 9 AM PST THIS MORNING... ...FREEZE WARNING IS CANCELLED... THE NATIONAL WEATHER SERVICE IN EUREKA HAS ISSUED A HARD FREEZE WARNING...WHICH IS IN EFFECT UNTIL 9 AM PST THIS MORNING. THE FREEZE WARNING HAS BEEN CANCELLED. * LOW TEMPERATURES...LOWER 30S WITH COLDER VALLEYS DIPPING INTO THE UPPER 20S. * LOCATIONS INCLUDE...CRESCENT CITY...ARCATA...BLUE LAKE..EUREKA...FORTUNA. * FOR A DETAILED VIEW OF THE HAZARD AREA...VISIT HTTP://WWW.WRH.NOAA.GOV/MAP... PRECAUTIONARY/PREPAREDNESS ACTIONS... A HARD FREEZE WARNING MEANS SUB-FREEZING TEMPERATURES ARE IMMINENT OR HIGHLY LIKELY. THESE CONDITIONS WILL KILL CROPS AND OTHER SENSITIVE VEGETATION. && $$ CAZ102-105-106-171700- /O.CON.KEKA.HZ.W.0003.000000T0000Z-161217T1700Z/ DEL NORTE INTERIOR-NORTHERN HUMBOLDT INTERIOR- SOUTHERN HUMBOLDT INTERIOR- 120 AM PST SAT DEC 17 2016 ...HARD FREEZE WARNING REMAINS IN EFFECT UNTIL 9 AM PST THIS MORNING... * LOW TEMPERATURES...20S. * LOCATIONS INCLUDE...GASQUET...WILLOW CREEK...ORLEANS... GARBERVILLE...BRIDGEVILLE. * FOR A DETAILED VIEW OF THE HAZARD AREA...VISIT HTTP://WWW.WRH.NOAA.GOV/MAP... PRECAUTIONARY/PREPAREDNESS ACTIONS... A HARD FREEZE WARNING MEANS SUB-FREEZING TEMPERATURES ARE IMMINENT OR HIGHLY LIKELY. THESE CONDITIONS WILL KILL CROPS AND OTHER SENSITIVE VEGETATION. && $$ CAZ109-171700- /O.CON.KEKA.FR.Y.0021.000000T0000Z-161217T1700Z/ MENDOCINO COAST- 120 AM PST SAT DEC 17 2016 ...FROST ADVISORY REMAINS IN EFFECT UNTIL 9 AM PST THIS MORNING... * LOW TEMPERATURES...MID 30S. * LOCATIONS INCLUDE...FORT BRAGG...POINT ARENA. * 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. && $$
The office that day
Everything else NWS Eureka, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 16, 1:58 AM PST | Frost Advisory | EKA | Humboldt, Mendocino | 31 hr |
| Dec 16, 1:58 AM PST | Freeze Watch | EKA | Del Norte, Humboldt | 13 hr |
| Dec 16, 12:13 PM PST | Small Craft Advisory | EKA | 57 hr | |
| Dec 16, 2:55 PM PST | Hard Freeze Warning | EKA | Del Norte, Humboldt | 18 hr |
Nearby
Freeze Warnings in California, 2016Every freeze warning in 2016
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.