Alert archive / California / Frost Advisories in 2018
Frost Advisory 2, NWS Eureka, CA
NWS Eureka, CA issued this frost advisory at Mar 5, 2018, 2:26 PM PST for Mendocino County, California. It took effect at Mar 5, 2018, 10:00 PM PST. It was in force for 11 hr.
The area
The counties it named.
The facts
- Issued
- Mar 5, 2018, 2:26 PM PST (22:26 UTC)
- In effect from
- Mar 5, 2018, 10:00 PM PST
- Expired
- Mar 6, 2018, 9:00 AM PST
- In force
- 11 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 22:24 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 12:00Z, 10.4 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
- 1347 m above ground
- 0-6 km bulk shear
- 32 kt
- 0-1 km storm-relative helicity
- -8 m²/s²
- 0-3 km storm-relative helicity
- 26 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
570 WWUS76 KEKA 052226 NPWEKA URGENT - WEATHER MESSAGE National Weather Service Eureka CA 226 PM PST Mon Mar 5 2018 CAZ110>113-061130- /O.NEW.KEKA.FR.Y.0002.180306T0600Z-180306T1700Z/ Northwestern Mendocino Interior-Northeastern Mendocino Interior- Southwestern Mendocino Interior-Southeastern Mendocino Interior- 226 PM PST Mon Mar 5 2018 ...FROST ADVISORY IN EFFECT FROM 10 PM THIS EVENING TO 9 AM PST TUESDAY... The National Weather Service in Eureka has issued a Frost Advisory...which is in effect from 10 PM this evening to 9 AM PST Tuesday. * LOW TEMPERATURES...Lows from 33 to 36...with isolated locations falling to the upper 20s to low 30s. * LOCATIONS INCLUDE...Leggett...Laytonville...Willits... Covelo...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. && $$
2 follow-up statements
440 WWUS76 KEKA 061118 NPWEKA URGENT - WEATHER MESSAGE National Weather Service Eureka CA 318 AM PST Tue Mar 6 2018 CAZ110>113-061700- /O.CON.KEKA.FR.Y.0002.000000T0000Z-180306T1700Z/ Northwestern Mendocino Interior-Northeastern Mendocino Interior- Southwestern Mendocino Interior-Southeastern Mendocino Interior- 318 AM PST Tue Mar 6 2018 ...FROST ADVISORY REMAINS IN EFFECT UNTIL 9 AM PST THIS MORNING... * LOW TEMPERATURES...Lows from 33 to 36...with isolated locations falling to the upper 20s to low 30s. * LOCATIONS INCLUDE...Leggett...Laytonville...Willits... Covelo...Boonville...Comptche...Ukiah...Hopland.... * FOR A DETAILED VIEW OF THE HAZARD AREA...visit http://www.wrh.noaa.gov/map $$
880 WWUS76 KEKA 061645 NPWEKA URGENT - WEATHER MESSAGE National Weather Service Eureka CA 845 AM PST Tue Mar 6 2018 CAZ110>113-061745- /O.EXP.KEKA.FR.Y.0002.000000T0000Z-180306T1700Z/ Northwestern Mendocino Interior-Northeastern Mendocino Interior- Southwestern Mendocino Interior-Southeastern Mendocino Interior- 845 AM PST Tue Mar 6 2018 ...FROST ADVISORY WILL EXPIRE AT 9 AM PST THIS MORNING... $$
The office that day
Everything else NWS Eureka, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 5, 1:18 AM PST | Freeze Warning | EKA | Mendocino | 8 hr |
| Mar 5, 2:26 AM PST | Small Craft Advisory | EKA | 4 days |
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.