Alert archive / California / Frost Advisories in 2017
Frost Advisory 3, NWS Eureka, CA
NWS Eureka, CA issued this frost advisory at Mar 1, 2017, 1:44 AM PST for Del Norte County, Humboldt County, Mendocino County, California. It took effect at Mar 2, 2017, 1:00 AM PST. It was in force for 7 hr.
The area
The counties it named.
The facts
- Issued
- Mar 1, 2017, 1:44 AM PST (09:44 UTC)
- In effect from
- Mar 2, 2017, 1:00 AM PST
- Expired
- Mar 2, 2017, 8:00 AM PST
- In force
- 7 hr
- Issued by
- NWS Eureka, CA
Counties Del Norte County, CA, Humboldt County, CA, Mendocino County, CA
The radar
The Eureka (Bunker Hill) radar (KBHX), 47 km from the middle of the area, began a volume at 09:42 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, 9.7 hours before the alert went out and 210 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
- 2 J/kg
- Mixed-layer CIN
- -10 J/kg
- Mixed-layer LCL
- 1381 m above ground
- 0-6 km bulk shear
- 43 kt
- 0-1 km storm-relative helicity
- 21 m²/s²
- 0-3 km storm-relative helicity
- 131 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
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. && $$ CAZ101-103-109-020000- /O.NEW.KEKA.FR.Y.0003.170302T0900Z-170302T1600Z/ /O.CON.KEKA.FR.Y.0002.000000T0000Z-170301T1600Z/ Coastal Del Norte-Northern Humboldt Coast-Mendocino Coast- 144 AM PST Wed Mar 1 2017 ...FROST ADVISORY REMAINS IN EFFECT UNTIL 8 AM PST THIS MORNING... ...FROST ADVISORY IN EFFECT FROM 1 AM TO 8 AM PST THURSDAY... The National Weather Service in Eureka has issued a Frost Advisory...which is in effect from 1 AM to 8 AM PST Thursday. * LOW TEMPERATURES...Lower to middle 30s. * LOCATIONS INCLUDE...Fort Bragg...Point Arena...Crescent City...Arcata...Eureka...Fortuna...Rio Dell. * FOR A DETAILED VIEW OF THE HAZARD AREA...visit http://www.wrh.noaa.gov/map PRECAUTIONARY/PREPAREDNESS ACTIONS... A Frost Advisory means that frost is possible. Sensitive outdoor plants may be killed if left uncovered. && $$
2 follow-up statements
202 WWUS76 KEKA 012340 NPWEKA URGENT - WEATHER MESSAGE National Weather Service Eureka CA 340 PM PST Wed Mar 1 2017 CAZ110>113-021245- /O.CON.KEKA.FZ.W.0003.170302T0900Z-170302T1600Z/ Northwestern Mendocino Interior-Northeastern Mendocino Interior- Southwestern Mendocino Interior-Southeastern Mendocino Interior- 340 PM PST Wed Mar 1 2017 ...FREEZE WARNING REMAINS 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 $$ CAZ101-103-109-021245- /O.CON.KEKA.FR.Y.0003.170302T0900Z-170302T1600Z/ Coastal Del Norte-Northern Humboldt Coast-Mendocino Coast- 340 PM PST Wed Mar 1 2017 ...FROST ADVISORY REMAINS IN EFFECT FROM 1 AM TO 8 AM PST THURSDAY... * LOW TEMPERATURES...Lower to middle 30s. * LOCATIONS INCLUDE...Fort Bragg...Point Arena...Crescent City...Arcata...Eureka...Fortuna...Rio Dell. * FOR A DETAILED VIEW OF THE HAZARD AREA...visit http://www.wrh.noaa.gov/map $$
705 WWUS76 KEKA 021034 NPWEKA URGENT - WEATHER MESSAGE National Weather Service Eureka CA 234 AM PST Thu Mar 2 2017 CAZ101-103-021145- /O.CAN.KEKA.FR.Y.0003.000000T0000Z-170302T1600Z/ Coastal Del Norte-Northern Humboldt Coast- 234 AM PST Thu Mar 2 2017 ...FROST ADVISORY IS CANCELLED... The National Weather Service in Eureka has cancelled the Frost Advisory. This will be the final statement issued for this event. $$ CAZ110>113-021600- /O.CON.KEKA.FZ.W.0003.000000T0000Z-170302T1600Z/ Northwestern Mendocino Interior-Northeastern Mendocino Interior- Southwestern Mendocino Interior-Southeastern Mendocino Interior- 234 AM PST Thu Mar 2 2017 ...FREEZE WARNING REMAINS IN EFFECT UNTIL 8 AM PST THIS MORNING... * LOW TEMPERATURES...Upper 20s to lower 30s. * LOCATIONS INCLUDE...Ukiah...Hopland...Covelo...Boonville... Comptche...Leggett...Laytonville...Willits. * FOR A DETAILED VIEW OF THE HAZARD AREA...visit http://www.wrh.noaa.gov/map $$ CAZ109-021600- /O.CON.KEKA.FR.Y.0003.000000T0000Z-170302T1600Z/ Mendocino Coast- 234 AM PST Thu Mar 2 2017 ...FROST ADVISORY REMAINS IN EFFECT UNTIL 8 AM PST THIS MORNING... * LOW TEMPERATURES...Lower to middle 30s. * LOCATIONS INCLUDE...Fort Bragg...Point Arena. * FOR A DETAILED VIEW OF THE HAZARD AREA...visit http://www.wrh.noaa.gov/map $$
The office that day
Everything else NWS Eureka, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 1, 1:44 AM PST | Freeze Warning | EKA | Mendocino | 30 hr |
Nearby
Frost Advisories in California, 2017Every frost advisory 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.