Alert archive / California / Frost Advisories in 2018
Frost Advisory 6, NWS Eureka, CA
NWS Eureka, CA issued this frost advisory at Mar 25, 2018, 3:43 AM PDT for Del Norte County, Humboldt County, Mendocino County, California. It took effect at Mar 26, 2018, 1:00 AM PDT. It was in force for 8 hr.
The area
The counties it named.
The facts
- Issued
- Mar 25, 2018, 3:43 AM PDT (10:43 UTC)
- In effect from
- Mar 26, 2018, 1:00 AM PDT
- Expired
- Mar 26, 2018, 9:00 AM PDT
- In force
- 8 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 10:44 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, 10.7 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1916 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km storm-relative helicity
- 66 m²/s²
- 0-3 km storm-relative helicity
- 192 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
361 WWUS76 KEKA 251043 NPWEKA URGENT - WEATHER MESSAGE National Weather Service Eureka CA 343 AM PDT Sun Mar 25 2018 CAZ110-111-252345- /O.NEW.KEKA.FZ.W.0004.180326T0800Z-180326T1600Z/ Northwestern Mendocino Interior-Northeastern Mendocino Interior- 343 AM PDT Sun Mar 25 2018 ...FREEZE WARNING IN EFFECT FROM 1 AM TO 9 AM PDT MONDAY... The National Weather Service in Eureka has issued a Freeze Warning...which is in effect from 1 AM to 9 AM PDT Monday. * LOW TEMPERATURES...Around 30 degrees. * LOCATIONS INCLUDE...Leggett...Laytonville...Willits and 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. && $$ CAZ103-109-112-113-252345- /O.NEW.KEKA.FR.Y.0006.180326T0800Z-180326T1600Z/ Northern Humboldt Coast-Mendocino Coast- Southwestern Mendocino Interior-Southeastern Mendocino Interior- 343 AM PDT Sun Mar 25 2018 ...FROST ADVISORY IN EFFECT FROM 1 AM TO 9 AM PDT MONDAY... The National Weather Service in Eureka has issued a Frost Advisory...which is in effect from 1 AM to 9 AM PDT Monday. * LOW TEMPERATURES...Around 33 to 36 degrees. * LOCATIONS INCLUDE...Arcata...Eureka...Fortuna...Fort Bragg... Point Arena...Boonville...Comptche...Ukiah...Hopland. * FOR A DETAILED VIEW OF THE HAZARD AREA...visit http://www.wrh.noaa.gov/map PRECAUTIONARY/PREPAREDNESS ACTIONS... A Frost Advisory means that frost is possible. Sensitive outdoor plants may be killed if left uncovered. && $$
3 follow-up statements
730 WWUS76 KEKA 252109 NPWEKA URGENT - WEATHER MESSAGE National Weather Service Eureka CA 209 PM PDT Sun Mar 25 2018 CAZ110-111-261015- /O.CON.KEKA.FZ.W.0004.180326T0800Z-180326T1600Z/ Northwestern Mendocino Interior-Northeastern Mendocino Interior- 209 PM PDT Sun Mar 25 2018 ...FREEZE WARNING REMAINS IN EFFECT FROM 1 AM TO 9 AM PDT MONDAY... * LOW TEMPERATURES...upper 20S to lower 30S. * LOCATIONS INCLUDE...Covelo...Leggett...Laytonville...Willits. * FOR A DETAILED VIEW OF THE HAZARD AREA...visit http://www.wrh.noaa.gov/map $$ CAZ101-261015- /O.EXA.KEKA.FR.Y.0006.180326T0800Z-180326T1600Z/ Coastal Del Norte- 209 PM PDT Sun Mar 25 2018 ...FROST ADVISORY IN EFFECT FROM 1 AM TO 9 AM PDT MONDAY... The National Weather Service in Eureka has issued a Frost Advisory...which is in effect from 1 AM to 9 AM PDT Monday. * LOW TEMPERATURES...low to mid 30s. * LOCATIONS INCLUDE...Mainly north and east of Crescent City. * FOR A DETAILED VIEW OF THE HAZARD AREA...visit http://www.wrh.noaa.gov/map $$ CAZ103-109-112-113-261015- /O.CON.KEKA.FR.Y.0006.180326T0800Z-180326T1600Z/ Northern Humboldt Coast-Mendocino Coast- Southwestern Mendocino Interior-Southeastern Mendocino Interior- 209 PM PDT Sun Mar 25 2018 ...FROST ADVISORY REMAINS IN EFFECT FROM 1 AM TO 9 AM PDT MONDAY... * LOW TEMPERATURES...low to mid 30s. * LOCATIONS INCLUDE...Fort Bragg...Point Arena...Ukiah... Hopland...Arcata...Eureka...Fortuna...Boonville...Comptche. * FOR A DETAILED VIEW OF THE HAZARD AREA...visit http://www.wrh.noaa.gov/map $$
685 WWUS76 KEKA 261007 NPWEKA URGENT - WEATHER MESSAGE National Weather Service Eureka CA 307 AM PDT Mon Mar 26 2018 CAZ110-111-261600- /O.CON.KEKA.FZ.W.0004.000000T0000Z-180326T1600Z/ Northwestern Mendocino Interior-Northeastern Mendocino Interior- 307 AM PDT Mon Mar 26 2018 ...FREEZE WARNING REMAINS IN EFFECT UNTIL 9 AM PDT THIS MORNING... * LOW TEMPERATURES...near 30 degrees. * LOCATIONS INCLUDE...Covelo...Leggett...Laytonville...Willits. * FOR A DETAILED VIEW OF THE HAZARD AREA...visit http://www.wrh.noaa.gov/map $$ CAZ101-103-109-112-113-261600- /O.CON.KEKA.FR.Y.0006.000000T0000Z-180326T1600Z/ Coastal Del Norte-Northern Humboldt Coast-Mendocino Coast- Southwestern Mendocino Interior-Southeastern Mendocino Interior- 307 AM PDT Mon Mar 26 2018 ...FROST ADVISORY REMAINS IN EFFECT UNTIL 9 AM PDT THIS MORNING... * LOW TEMPERATURES...low to mid 30s. * LOCATIONS INCLUDE...Fort Bragg...Crescent City...Ukiah...Hopland...Arcata...Eureka...Fortuna... Boonville...Comptche.... * FOR A DETAILED VIEW OF THE HAZARD AREA...visit http://www.wrh.noaa.gov/map $$
379 WWUS76 KEKA 261544 NPWEKA URGENT - WEATHER MESSAGE National Weather Service Eureka CA 844 AM PDT Mon Mar 26 2018 CAZ110-111-261645- /O.EXP.KEKA.FZ.W.0004.000000T0000Z-180326T1600Z/ Northwestern Mendocino Interior-Northeastern Mendocino Interior- 844 AM PDT Mon Mar 26 2018 ...FREEZE WARNING WILL EXPIRE AT 9 AM PDT THIS MORNING... $$ CAZ101-103-109-112-113-261645- /O.EXP.KEKA.FR.Y.0006.000000T0000Z-180326T1600Z/ Coastal Del Norte-Northern Humboldt Coast-Mendocino Coast- Southwestern Mendocino Interior-Southeastern Mendocino Interior- 844 AM PDT Mon Mar 26 2018 ...FROST ADVISORY WILL EXPIRE AT 9 AM PDT THIS MORNING... $$
The office that day
Everything else NWS Eureka, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 25, 3:43 AM PDT | Freeze Warning | EKA | Mendocino | 29 hr |
Nearby
Frost Advisories in California, 2018Every frost advisory in 2018
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.