Alert archive / California / Frost Advisories in 2018
Frost Advisory 3, NWS Eureka, CA
NWS Eureka, CA issued this frost advisory at Mar 16, 2018, 2:12 PM PDT for Mendocino County, California. It took effect at Mar 17, 2018, 1:00 AM PDT. It was in force for 8 hr.
The area
The counties it named.
The facts
- Issued
- Mar 16, 2018, 2:12 PM PDT (21:12 UTC)
- In effect from
- Mar 17, 2018, 1:00 AM PDT
- Expired
- Mar 17, 2018, 9:00 AM PDT
- In force
- 8 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 21:12 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, 9.2 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
- 896 m above ground
- 0-6 km bulk shear
- 60 kt
- 0-1 km storm-relative helicity
- 75 m²/s²
- 0-3 km storm-relative helicity
- 168 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
602 WWUS76 KEKA 162112 NPWEKA URGENT - WEATHER MESSAGE National Weather Service Eureka CA 212 PM PDT Fri Mar 16 2018 ...A cold air mass will lead to near freezing temperatures the next several mornings... CAZ110-111-171015- /O.UPG.KEKA.FZ.A.0001.180317T0800Z-180317T1600Z/ /O.NEW.KEKA.FR.Y.0003.180317T0800Z-180317T1600Z/ Northwestern Mendocino Interior-Northeastern Mendocino Interior- 212 PM PDT Fri Mar 16 2018 ...FROST ADVISORY IN EFFECT FROM 1 AM TO 9 AM PDT SATURDAY FOR INTERIOR VALLEYS OF MENDOCINO COUNTY... The National Weather Service in Eureka has issued a Frost Advisory...which is in effect from 1 AM to 9 AM PDT Saturday. The Freeze Watch is no longer in effect. * LOW TEMPERATURES...33 to 36 degrees. * LOCATIONS INCLUDE...Leggett...Laytonville...Willits...Covelo. * 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. && $$ CAZ113-171015- /O.NEW.KEKA.FR.Y.0003.180317T0800Z-180317T1600Z/ Southeastern Mendocino Interior- 212 PM PDT Fri Mar 16 2018 ...FROST ADVISORY IN EFFECT FROM 1 AM TO 9 AM PDT FOR INTERIOR VALLEYS OF SOUTHEAST MENDOCINO COUNTY... The National Weather Service in Eureka has issued a Frost Advisory...which is in effect from 1 AM to 9 AM PDT Saturday. * LOW TEMPERATURES...33 to 36 degrees. * LOCATIONS INCLUDE...Ukiah Valley...Redwood Valley...Potter Valley. * FOR A DETAILED VIEW OF THE HAZARD AREA...visit http://www.wrh.noaa.gov/map PRECAUTIONARY/PREPAREDNESS ACTIONS... A Frost Advisory means that frost is possible. Sensitive outdoor plants may be killed if left uncovered. && $$
2 follow-up statements
820 WWUS76 KEKA 170813 NPWEKA URGENT - WEATHER MESSAGE National Weather Service Eureka CA 113 AM PDT Sat Mar 17 2018 ...A cold air mass will lead to near freezing temperatures the next several mornings... CAZ109-112-171600- /O.EXA.KEKA.FR.Y.0003.000000T0000Z-180317T1600Z/ Mendocino Coast-Southwestern Mendocino Interior- 113 AM PDT Sat Mar 17 2018 ...FROST ADVISORY IN EFFECT UNTIL 9 AM PDT THIS MORNING... The National Weather Service in Eureka has issued a Frost Advisory...which is in effect until 9 AM PDT this morning. * LOW TEMPERATURES...33 to 36 degrees. * LOCATIONS INCLUDE...Fort Bragg...Point Arena...Boonville... Comptche. * FOR A DETAILED VIEW OF THE HAZARD AREA...visit http://www.wrh.noaa.gov/map $$ CAZ110-111-113-171600- /O.CON.KEKA.FR.Y.0003.000000T0000Z-180317T1600Z/ Northwestern Mendocino Interior-Northeastern Mendocino Interior- Southeastern Mendocino Interior- 113 AM PDT Sat Mar 17 2018 ...FROST ADVISORY REMAINS IN EFFECT UNTIL 9 AM PDT THIS MORNING... * LOW TEMPERATURES...33 to 36 degrees. * LOCATIONS INCLUDE...Leggett...Laytonville...Willits... Covelo...Ukiah...Hopland.... * FOR A DETAILED VIEW OF THE HAZARD AREA...visit http://www.wrh.noaa.gov/map $$
567 WWUS76 KEKA 171542 NPWEKA URGENT - WEATHER MESSAGE National Weather Service Eureka CA 842 AM PDT Sat Mar 17 2018 CAZ109>113-171645- /O.EXP.KEKA.FR.Y.0003.000000T0000Z-180317T1600Z/ Mendocino Coast-Northwestern Mendocino Interior- Northeastern Mendocino Interior-Southwestern Mendocino Interior- Southeastern Mendocino Interior- 842 AM PDT Sat Mar 17 2018 ...FROST ADVISORY WILL EXPIRE AT 9 AM PDT THIS MORNING... This will be the final statement issued for this event. $$
The office that day
Everything else NWS Eureka, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 16, 3:38 AM PDT | Freeze Watch | EKA | Mendocino | 11 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.