Alert archive / California / Frost Advisories in 2017
Frost Advisory 8, NWS Eureka, CA
NWS Eureka, CA issued this frost advisory at Apr 13, 2017, 3:21 PM PDT for Del Norte County, Humboldt County, Mendocino County, California. It took effect at Apr 14, 2017, 2:00 AM PDT. It was in force for 5 hr.
The area
The counties it named.
The facts
- Issued
- Apr 13, 2017, 3:21 PM PDT (22:21 UTC)
- In effect from
- Apr 14, 2017, 2:00 AM PDT
- Expired
- Apr 14, 2017, 7:00 AM PDT
- In force
- 5 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 22:23 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, 10.4 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
- 658 m above ground
- 0-6 km bulk shear
- 43 kt
- 0-1 km storm-relative helicity
- 86 m²/s²
- 0-3 km storm-relative helicity
- 77 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
620 WWUS76 KEKA 132221 NPWEKA URGENT - WEATHER MESSAGE National Weather Service Eureka CA 321 PM PDT Thu Apr 13 2017 CAZ110-111-113-141130- /O.NEW.KEKA.FR.Y.0008.170414T0900Z-170414T1400Z/ Northwestern Mendocino Interior-Northeastern Mendocino Interior- Southeastern Mendocino Interior- 321 PM PDT Thu Apr 13 2017 ...FROST ADVISORY IN EFFECT FROM 2 AM TO 7 AM PDT FRIDAY... The National Weather Service in Eureka has issued a Frost Advisory...which is in effect from 2 AM to 7 AM PDT Friday. * LOCATIONS INCLUDE...Willits...Leggett...Laytonville. * 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. && $$
4 follow-up statements
724 WWUS76 KEKA 132225 CCA NPWEKA URGENT - WEATHER MESSAGE...CORRECTED National Weather Service Eureka CA 325 PM PDT Thu Apr 13 2017 CAZ110-111-113-141030- /O.COR.KEKA.FR.Y.0008.170414T0900Z-170414T1400Z/ Northwestern Mendocino Interior-Northeastern Mendocino Interior- Southeastern Mendocino Interior- 325 PM PDT Thu Apr 13 2017 ...FROST ADVISORY IN EFFECT FROM 2 AM TO 7 AM PDT FRIDAY... The National Weather Service in Eureka has issued a Frost Advisory...which is in effect from 2 AM to 7 AM PDT Friday. * LOCATIONS INCLUDE...Willits...Leggett...Laytonville. * LOW TEMPERATURES...33 to 37. * FOR A DETAILED VIEW OF THE HAZARD AREA...visit http://www.wrh.noaa.gov/map PRECAUTIONARY/PREPAREDNESS ACTIONS... A Frost Advisory means that frost is possible. Sensitive outdoor plants may be killed if left uncovered. && $$
780 WWUS76 KEKA 140139 NPWEKA URGENT - WEATHER MESSAGE National Weather Service Eureka CA 639 PM PDT Thu Apr 13 2017 CAZ102-105-106-141400- /O.EXA.KEKA.FR.Y.0008.170414T0900Z-170414T1400Z/ Del Norte Interior-Northern Humboldt Interior- Southern Humboldt Interior- 639 PM PDT Thu Apr 13 2017 ...FROST ADVISORY IN EFFECT FROM 2 AM TO 7 AM PDT FRIDAY... The National Weather Service in Eureka has issued a Frost Advisory...which is in effect from 2 AM to 7 AM PDT Friday. * LOCATIONS INCLUDE...Gasquet...Willow ...Creek...Orleans... Garberville...Bridgeville. * LOW TEMPERATURES...33 to 36. * FOR A DETAILED VIEW OF THE HAZARD AREA...visit http://www.wrh.noaa.gov/map $$ CAZ110-111-113-141400- /O.CON.KEKA.FR.Y.0008.170414T0900Z-170414T1400Z/ Northwestern Mendocino Interior-Northeastern Mendocino Interior- Southeastern Mendocino Interior- 639 PM PDT Thu Apr 13 2017 ...FROST ADVISORY REMAINS IN EFFECT FROM 2 AM TO 7 AM PDT FRIDAY... * LOCATIONS INCLUDE...Covelo...Ukiah...Hopland...Leggett... Laytonville...Willits. * LOW TEMPERATURES...33 to 36. * FOR A DETAILED VIEW OF THE HAZARD AREA...visit http://www.wrh.noaa.gov/map $$
581 WWUS76 KEKA 141037 NPWEKA URGENT - WEATHER MESSAGE National Weather Service Eureka CA 337 AM PDT Fri Apr 14 2017 CAZ102-105-106-141145- /O.CAN.KEKA.FR.Y.0008.000000T0000Z-170414T1400Z/ Del Norte Interior-Northern Humboldt Interior- Southern Humboldt Interior- 337 AM PDT Fri Apr 14 2017 ...FROST ADVISORY IS CANCELLED... The National Weather Service in Eureka has cancelled the Frost Advisory. Patchy frost may be possible in isolated areas with little cloud coverage early this morning. $$ CAZ110-111-113-141400- /O.CON.KEKA.FR.Y.0008.000000T0000Z-170414T1400Z/ Northwestern Mendocino Interior-Northeastern Mendocino Interior- Southeastern Mendocino Interior- 337 AM PDT Fri Apr 14 2017 ...FROST ADVISORY REMAINS IN EFFECT UNTIL 7 AM PDT THIS MORNING... * LOCATIONS INCLUDE...Covelo...Ukiah...Hopland...Leggett... Laytonville...Willits. * LOW TEMPERATURES...33 to 36. * FOR A DETAILED VIEW OF THE HAZARD AREA...visit http://www.wrh.noaa.gov/map $$
759 WWUS76 KEKA 141400 NPWEKA URGENT - WEATHER MESSAGE National Weather Service Eureka CA 700 AM PDT Fri Apr 14 2017 CAZ110-111-113-141500- /O.EXP.KEKA.FR.Y.0008.000000T0000Z-170414T1400Z/ Northwestern Mendocino Interior-Northeastern Mendocino Interior- Southeastern Mendocino Interior- 700 AM PDT Fri Apr 14 2017 ...FROST ADVISORY HAS EXPIRED... $$
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.