Alert archive / California / Frost Advisories in 2017
Frost Advisory 6, NWS Eureka, CA
NWS Eureka, CA issued this frost advisory at Mar 30, 2017, 3:47 AM PDT for Mendocino County, California. It took effect at Mar 31, 2017, 3:00 AM PDT. It was in force for 5 hr.
The area
The counties it named.
The facts
- Issued
- Mar 30, 2017, 3:47 AM PDT (10:47 UTC)
- In effect from
- Mar 31, 2017, 3:00 AM PDT
- Expired
- Mar 31, 2017, 8:00 AM PDT
- In force
- 5 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 10:48 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, 10.8 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
- 2571 m above ground
- 0-6 km bulk shear
- 36 kt
- 0-1 km storm-relative helicity
- -76 m²/s²
- 0-3 km storm-relative helicity
- -24 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
708 WWUS76 KEKA 301047 NPWEKA URGENT - WEATHER MESSAGE National Weather Service Eureka CA 347 AM PDT Thu Mar 30 2017 CAZ110>113-310000- /O.NEW.KEKA.FR.Y.0006.170331T1000Z-170331T1500Z/ Northwestern Mendocino Interior-Northeastern Mendocino Interior- Southwestern Mendocino Interior-Southeastern Mendocino Interior- 347 AM PDT Thu Mar 30 2017 ...FROST ADVISORY IN EFFECT FROM 3 AM TO 8 AM PDT FRIDAY... The National Weather Service in Eureka has issued a Frost Advisory...which is in effect from 3 AM to 8 AM PDT Friday. * LOCATIONS INCLUDE...Laytonville...Willits... Covelo...Boonville...Philo...Comptche and Potter Valley. * 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. && $$
2 follow-up statements
982 WWUS76 KEKA 302355 NPWEKA URGENT - WEATHER MESSAGE National Weather Service Eureka CA 455 PM PDT Thu Mar 30 2017 CAZ110>113-311300- /O.CON.KEKA.FR.Y.0006.170331T1000Z-170331T1500Z/ Northwestern Mendocino Interior-Northeastern Mendocino Interior- Southwestern Mendocino Interior-Southeastern Mendocino Interior- 455 PM PDT Thu Mar 30 2017 ...FROST ADVISORY REMAINS IN EFFECT FROM 3 AM TO 8 AM FRIDAY... * LOCATIONS INCLUDE...Laytonville...Willits...Covelo...and Potter Valley. * FOR A DETAILED VIEW OF THE HAZARD AREA...visit http://www.wrh.noaa.gov/map PRECAUTIONARY/PREPAREDNESS ACTIONS... A Frost Advisory means that frost is possible. Sensitive outdoor plants may be killed if left uncovered. $$
276 WWUS76 KEKA 311456 NPWEKA URGENT - WEATHER MESSAGE National Weather Service Eureka CA 756 AM PDT Fri Mar 31 2017 CAZ110>113-311600- /O.EXP.KEKA.FR.Y.0006.000000T0000Z-170331T1500Z/ Northwestern Mendocino Interior-Northeastern Mendocino Interior- Southwestern Mendocino Interior-Southeastern Mendocino Interior- 756 AM PDT Fri Mar 31 2017 ...FROST ADVISORY WILL EXPIRE AT 8 AM PDT THIS MORNING... Temperatures will warm quickly as the sun moves in. $$
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.