Alert archive / California / Freeze Warnings in 2017
Freeze Warning 2, NWS Eureka, CA
NWS Eureka, CA issued this freeze warning at Feb 28, 2017, 2:11 AM PST for Mendocino County, California. It took effect at Mar 1, 2017, 1:00 AM PST. It was in force for 7 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
- Feb 28, 2017, 2:11 AM PST (10:11 UTC)
- In effect from
- Mar 1, 2017, 1:00 AM PST
- Expired
- Mar 1, 2017, 8:00 AM PST
- In force
- 7 hr
- Issued by
- NWS Eureka, CA
County Mendocino County, CA
The radar
The Eureka (Bunker Hill) radar (KBHX), 139 km from the middle of the area, began a volume at 10:11 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 00:00Z, 10.2 hours before the alert went out and 218 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
- 1650 m above ground
- 0-6 km bulk shear
- 23 kt
- 0-1 km storm-relative helicity
- -29 m²/s²
- 0-3 km storm-relative helicity
- -26 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
957 WWUS76 KEKA 281011 NPWEKA URGENT - WEATHER MESSAGE National Weather Service Eureka CA 211 AM PST Tue Feb 28 2017 CAZ110-111-113-010000- /O.UPG.KEKA.FZ.A.0001.170301T0900Z-170301T1600Z/ /O.NEW.KEKA.FZ.W.0002.170301T0900Z-170301T1600Z/ /O.CON.KEKA.FZ.W.0001.170228T1100Z-170228T1600Z/ Northwestern Mendocino Interior-Northeastern Mendocino Interior- Southeastern Mendocino Interior- 211 AM PST Tue Feb 28 2017 ...FREEZE WARNING REMAINS IN EFFECT UNTIL 8 AM PST THIS MORNING... ...FREEZE WARNING IN EFFECT FROM 1 AM TO 8 AM PST WEDNESDAY... The National Weather Service in Eureka has issued a Freeze Warning...which is in effect from 1 AM to 8 AM PST Wednesday. The Freeze Watch is no longer in effect. * LOW TEMPERATURES...upper 20s to lower 30s. * LOCATIONS INCLUDE...Leggett...Laytonville...Willits... Covelo... Ukiah...Hopland...Potter Valley. * 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. && $$ CAZ112-010000- /O.UPG.KEKA.FZ.A.0001.170301T0900Z-170301T1600Z/ /O.NEW.KEKA.FZ.W.0002.170301T0900Z-170301T1600Z/ /O.CON.KEKA.FR.Y.0001.170228T1100Z-170228T1600Z/ Southwestern Mendocino Interior- 211 AM PST Tue Feb 28 2017 ...FROST ADVISORY REMAINS IN EFFECT UNTIL 8 AM PST THIS MORNING... ...FREEZE WARNING IN EFFECT FROM 1 AM TO 8 AM PST WEDNESDAY... The National Weather Service in Eureka has issued a Freeze Warning...which is in effect from 1 AM to 8 AM PST Wednesday. The Freeze Watch is no longer in effect. * LOW TEMPERATURES...lower 30s this morning. Upper 20s to lower 30s tonight. * LOCATIONS INCLUDE...Boonville...Comptche. * FOR A DETAILED VIEW OF THE HAZARD AREA...visit http://www.wrh.noaa.gov/map PRECAUTIONARY/PREPAREDNESS ACTIONS... A Freeze Warning means sub-freezing temperatures are imminent or highly likely. These conditions will kill crops and other sensitive vegetation. A Frost Advisory means that frost is possible. Sensitive outdoor plants may be killed if left uncovered. && $$ CAZ109-010000- /O.NEW.KEKA.FR.Y.0002.170301T0900Z-170301T1600Z/ /O.CON.KEKA.FR.Y.0001.170228T1100Z-170228T1600Z/ Mendocino Coast- 211 AM PST Tue Feb 28 2017 ...FROST ADVISORY REMAINS IN EFFECT UNTIL 8 AM PST THIS MORNING... ...FROST ADVISORY IN EFFECT FROM 1 AM TO 8 AM PST WEDNESDAY... The National Weather Service in Eureka has issued a Frost Advisory...which is in effect from 1 AM to 8 AM PST Wednesday. * LOW TEMPERATURES...lower 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. && $$ CAZ101-103-010000- /O.NEW.KEKA.FR.Y.0002.170301T0900Z-170301T1600Z/ Coastal Del Norte-Northern Humboldt Coast- 211 AM PST Tue Feb 28 2017 ...FROST ADVISORY IN EFFECT FROM 1 AM TO 8 AM PST WEDNESDAY... The National Weather Service in Eureka has issued a Frost Advisory...which is in effect from 1 AM to 8 AM PST Wednesday. * LOW TEMPERATURES...lower 30s. * LOCATIONS INCLUDE...Crescent City...Arcata...Eureka... McKinleyville...Fortuna...Rio Dell. * FOR A DETAILED VIEW OF THE HAZARD AREA...visit http://www.wrh.noaa.gov/map PRECAUTIONARY/PREPAREDNESS ACTIONS... A Frost Advisory means that frost is possible. Sensitive outdoor plants may be killed if left uncovered. && $$
2 follow-up statements
269 WWUS76 KEKA 282113 NPWEKA URGENT - WEATHER MESSAGE National Weather Service Eureka CA 113 PM PST Tue Feb 28 2017 CAZ110>113-011015- /O.CON.KEKA.FZ.W.0002.170301T0900Z-170301T1600Z/ Northwestern Mendocino Interior-Northeastern Mendocino Interior- Southwestern Mendocino Interior-Southeastern Mendocino Interior- 113 PM PST Tue Feb 28 2017 ...FREEZE WARNING REMAINS IN EFFECT FROM 1 AM TO 8 AM PST WEDNESDAY... * LOW TEMPERATURES...Upper 20S to lower 30S. * LOCATIONS INCLUDE...Ukiah...Hopland...Covelo...Boonville... Comptche...Legget...Laytonville...Willits. * FOR A DETAILED VIEW OF THE HAZARD AREA...visit http://www.wrh.noaa.gov/map $$ CAZ101-103-109-011015- /O.CON.KEKA.FR.Y.0002.170301T0900Z-170301T1600Z/ Coastal Del Norte-Northern Humboldt Coast-Mendocino Coast- 113 PM PST Tue Feb 28 2017 ...FROST ADVISORY REMAINS IN EFFECT FROM 1 AM TO 8 AM PST WEDNESDAY... * LOW TEMPERATURES...Lower to middle 30s. * LOCATIONS INCLUDE...Fort Bragg...Point Arena...Crescent City...Arcata...Eureka...Fortuna...Rio Dell. * FOR A DETAILED VIEW OF THE HAZARD AREA...visit http://www.wrh.noaa.gov/map $$
602 WWUS76 KEKA 010944 NPWEKA URGENT - WEATHER MESSAGE National Weather Service Eureka CA 144 AM PST Wed Mar 1 2017 CAZ110>113-020000- /O.NEW.KEKA.FZ.W.0003.170302T0900Z-170302T1600Z/ /O.CON.KEKA.FZ.W.0002.000000T0000Z-170301T1600Z/ Northwestern Mendocino Interior-Northeastern Mendocino Interior- Southwestern Mendocino Interior-Southeastern Mendocino Interior- 144 AM PST Wed Mar 1 2017 ...FREEZE WARNING REMAINS IN EFFECT UNTIL 8 AM PST THIS MORNING... ...FREEZE WARNING IN EFFECT FROM 1 AM TO 8 AM PST THURSDAY... The National Weather Service in Eureka has issued a Freeze Warning...which is in effect from 1 AM to 8 AM PST Thursday. * LOW TEMPERATURES...Upper 20s to lower 30s. * LOCATIONS INCLUDE...Ukiah...Hopland...Covelo...Boonville... Comptche...Leggett...Laytonville...Willits. * 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. && $$ CAZ101-103-109-020000- /O.NEW.KEKA.FR.Y.0003.170302T0900Z-170302T1600Z/ /O.CON.KEKA.FR.Y.0002.000000T0000Z-170301T1600Z/ Coastal Del Norte-Northern Humboldt Coast-Mendocino Coast- 144 AM PST Wed Mar 1 2017 ...FROST ADVISORY REMAINS IN EFFECT UNTIL 8 AM PST THIS MORNING... ...FROST ADVISORY IN EFFECT FROM 1 AM TO 8 AM PST THURSDAY... The National Weather Service in Eureka has issued a Frost Advisory...which is in effect from 1 AM to 8 AM PST Thursday. * LOW TEMPERATURES...Lower to middle 30s. * LOCATIONS INCLUDE...Fort Bragg...Point Arena...Crescent City...Arcata...Eureka...Fortuna...Rio Dell. * FOR A DETAILED VIEW OF THE HAZARD AREA...visit http://www.wrh.noaa.gov/map PRECAUTIONARY/PREPAREDNESS ACTIONS... A Frost Advisory means that frost is possible. Sensitive outdoor plants may be killed if left uncovered. && $$
The office that day
Everything else NWS Eureka, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 28, 2:11 AM PST | Frost Advisory | EKA | Del Norte, Humboldt, Mendocino | 30 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; radar from the NEXRAD Level II archive.