Alert archive / California / Frost Advisories in 2017
Frost Advisory 35, NWS Eureka, CA
NWS Eureka, CA issued this frost advisory at Dec 3, 2017, 2:32 AM PST for Del Norte County, Humboldt County, Mendocino County, California. It took effect at Dec 3, 2017, 10:00 PM PST. It was in force for 12 hr.
The area
The counties it named.
The facts
- Issued
- Dec 3, 2017, 2:32 AM PST (10:32 UTC)
- In effect from
- Dec 3, 2017, 10:00 PM PST
- Expired
- Dec 4, 2017, 10:00 AM PST
- In force
- 12 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 10:35 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, 10.5 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
- 529 m above ground
- 0-6 km bulk shear
- 76 kt
- 0-1 km storm-relative helicity
- 142 m²/s²
- 0-3 km storm-relative helicity
- 147 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
754 WWUS76 KEKA 031032 NPWEKA URGENT - WEATHER MESSAGE National Weather Service Eureka CA 232 AM PST Sun Dec 3 2017 CAZ103-104-032345- /O.UPG.KEKA.FZ.A.0001.171204T0600Z-171204T1800Z/ /O.NEW.KEKA.FR.Y.0035.171204T0600Z-171204T1800Z/ Northern Humboldt Coast-Southwestern Humboldt- 232 AM PST Sun Dec 3 2017 ...FROST ADVISORY IN EFFECT FROM 10 PM THIS EVENING TO 10 AM PST MONDAY... The National Weather Service in Eureka has issued a Frost Advisory...which is in effect from 10 PM this evening to 10 AM PST Monday. * LOW TEMPERATURES...Low to mid 30s. * LOCATIONS INCLUDE...Arcata...Eureka...Fortuna...Petrolia... Honeydew...Ettersberg. * 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. && $$ CAZ101-109-112-032345- /O.NEW.KEKA.FR.Y.0035.171204T0600Z-171204T1800Z/ Coastal Del Norte-Mendocino Coast-Southwestern Mendocino Interior- 232 AM PST Sun Dec 3 2017 ...FROST ADVISORY IN EFFECT FROM 10 PM THIS EVENING TO 10 AM PST MONDAY... The National Weather Service in Eureka has issued a Frost Advisory...which is in effect from 10 PM this evening to 10 AM PST Monday. * LOW TEMPERATURES...Low to mid 30s. * LOCATIONS INCLUDE...Crescent City...Fort Bragg...Point Arena...Boonville...Comptche. * FOR A DETAILED VIEW OF THE HAZARD AREA...visit http://www.wrh.noaa.gov/map PRECAUTIONARY/PREPAREDNESS ACTIONS... A Frost Advisory means that frost is possible. Sensitive outdoor plants may be killed if left uncovered. && $$ CAZ102-105-106-032345- /O.CON.KEKA.FZ.A.0001.171204T0600Z-171204T1800Z/ Del Norte Interior-Northern Humboldt Interior- Southern Humboldt Interior- 232 AM PST Sun Dec 3 2017 ...FREEZE WATCH REMAINS IN EFFECT FROM THIS EVENING THROUGH MONDAY MORNING... * LOW TEMPERATURES...Upper 20S to lower 30S. * LOCATIONS INCLUDE...Gasquet...Orleans...Willow Creek... Garberville...Bridgeville. * FOR A DETAILED VIEW OF THE HAZARD AREA...visit http://www.wrh.noaa.gov/map $$
5 follow-up statements
832 WWUS76 KEKA 031628 NPWEKA URGENT - WEATHER MESSAGE National Weather Service Eureka CA 828 AM PST Sun Dec 3 2017 CAZ113-040530- /O.NEW.KEKA.WI.Y.0036.171205T0300Z-171205T1500Z/ Southeastern Mendocino Interior- 828 AM PST Sun Dec 3 2017 ...WIND ADVISORY IN EFFECT FROM 7 PM MONDAY TO 7 AM PST TUESDAY FOR HILLS AND RIDGES ABOVE 1500 FEET ACROSS SOUTHEAST MENDOCINO COUNTY... The National Weather Service in Eureka has issued a Wind Advisory...which is in effect from 7 PM Monday to 7 AM PST Tuesday. * WINDS...Sustained East Winds 20 TO 35 mph with Gusts Ranging from 45 to 55 mph. * LOCATIONS INCLUDE...Hills and Ridges or exposed areas above 1500 ft in Elevation across Southeast Mendocino County. * HIGHWAY(S) IMPACTED...Elevated portions of Hwy 175. * FOR A DETAILED VIEW OF THE HAZARD AREA...visit http://www.wrh.noaa.gov/map PRECAUTIONARY/PREPAREDNESS ACTIONS... A Wind Advisory means that winds of 35 mph or greater are expected. Winds this strong can make driving difficult, especially for high profile vehicles. Use extra caution. && $$ CAZ101-103-104-109-112-040530- /O.CON.KEKA.FR.Y.0035.171204T0600Z-171204T1800Z/ Coastal Del Norte-Northern Humboldt Coast-Southwestern Humboldt- Mendocino Coast-Southwestern Mendocino Interior- 828 AM PST Sun Dec 3 2017 ...FROST ADVISORY REMAINS IN EFFECT FROM 10 PM THIS EVENING TO 10 AM PST MONDAY... * LOW TEMPERATURES...Low to mid 30s. * LOCATIONS INCLUDE...Arcata...Eureka...Fortuna...Petrolia... Honeydew...Ettersberg...Crescent City...Fort Bragg...Point Arena...Boonville...Comptche. * FOR A DETAILED VIEW OF THE HAZARD AREA...visit http://www.wrh.noaa.gov/map $$ CAZ102-105-106-040530- /O.CON.KEKA.FZ.A.0001.171204T0600Z-171204T1800Z/ Del Norte Interior-Northern Humboldt Interior- Southern Humboldt Interior- 828 AM PST Sun Dec 3 2017 ...FREEZE WATCH REMAINS IN EFFECT FROM THIS EVENING THROUGH MONDAY MORNING... * LOW TEMPERATURES...Upper 20S to lower 30S. * LOCATIONS INCLUDE...Gasquet...Orleans...Willow Creek... Garberville...Bridgeville. * FOR A DETAILED VIEW OF THE HAZARD AREA...visit http://www.wrh.noaa.gov/map $$
696 WWUS76 KEKA 032154 NPWEKA URGENT - WEATHER MESSAGE National Weather Service Eureka CA 154 PM PST Sun Dec 3 2017 . CAZ102-105-106-041100- /O.UPG.KEKA.FZ.A.0001.171204T0600Z-171204T1800Z/ /O.NEW.KEKA.FZ.W.0012.171204T0600Z-171204T1800Z/ Del Norte Interior-Northern Humboldt Interior- Southern Humboldt Interior- 154 PM PST Sun Dec 3 2017 ...FREEZE WARNING IN EFFECT FROM 10 PM THIS EVENING TO 10 AM PST MONDAY... The National Weather Service in Eureka has issued a Freeze Warning...which is in effect from 10 PM this evening to 10 AM PST Monday. The Freeze Watch is no longer in effect. * LOW TEMPERATURES...Upper 20S to lower 30S. * LOCATIONS INCLUDE...Gasquet...Orleans...Willow Creek... Garberville...Bridgeville. * 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. && $$ CAZ101-103-104-109-112-041100- /O.CON.KEKA.FR.Y.0035.171204T0600Z-171204T1800Z/ Coastal Del Norte-Northern Humboldt Coast-Southwestern Humboldt- Mendocino Coast-Southwestern Mendocino Interior- 154 PM PST Sun Dec 3 2017 ...FROST ADVISORY REMAINS IN EFFECT FROM 10 PM THIS EVENING TO 10 AM PST MONDAY... * LOW TEMPERATURES...Lower 30s to mid 30s. A light freeze is possible in a few protected valleys. * LOCATIONS INCLUDE...Fort Bragg...Point Arena...Crescent City...Arcata...Eureka...Fortuna...Petrolia...Honeydew... Ettersberg...Boonville...Comptche. * FOR A DETAILED VIEW OF THE HAZARD AREA...visit http://www.wrh.noaa.gov/map $$ CAZ113-041100- /O.CON.KEKA.WI.Y.0036.171205T0300Z-171205T1500Z/ Southeastern Mendocino Interior- 154 PM PST Sun Dec 3 2017 ...WIND ADVISORY REMAINS IN EFFECT FROM 7 PM MONDAY TO 7 AM PST TUESDAY ABOVE 1500 FEET... * WINDS...20 to 35 mph with gusts to 45 to 55 mph. * LOCATIONS INCLUDE...Hills, ridges, and exposed areas above 1500 feet in elevation across southeast Mendocino county. * HIGHWAY(S) IMPACTED...Elevated portions of Highway 175. * FOR A DETAILED VIEW OF THE HAZARD AREA...visit http://www.wrh.noaa.gov/map $$
210 WWUS76 KEKA 041012 NPWEKA URGENT - WEATHER MESSAGE National Weather Service Eureka CA 212 AM PST Mon Dec 4 2017 . CAZ102-105-106-041800- /O.CON.KEKA.FZ.W.0012.000000T0000Z-171204T1800Z/ Del Norte Interior-Northern Humboldt Interior- Southern Humboldt Interior- 212 AM PST Mon Dec 4 2017 ...FREEZE WARNING REMAINS IN EFFECT UNTIL 10 AM PST THIS MORNING... * LOW TEMPERATURES...Upper 20S to lower 30S. * LOCATIONS INCLUDE...Gasquet...Orleans...Willow Creek... Garberville...Bridgeville. * FOR A DETAILED VIEW OF THE HAZARD AREA...visit http://www.wrh.noaa.gov/map $$ CAZ101-103-104-109-112-041800- /O.CON.KEKA.FR.Y.0035.000000T0000Z-171204T1800Z/ Coastal Del Norte-Northern Humboldt Coast-Southwestern Humboldt- Mendocino Coast-Southwestern Mendocino Interior- 212 AM PST Mon Dec 4 2017 ...FROST ADVISORY REMAINS IN EFFECT UNTIL 10 AM PST THIS MORNING... * LOW TEMPERATURES...Low to mid 30s. * LOCATIONS INCLUDE...Fort Bragg...Point Arena...Crescent City...Arcata...Eureka...Fortuna...Petrolia...Honeydew... ... Ettersberg...Boonville...Comptche. * FOR A DETAILED VIEW OF THE HAZARD AREA...visit http://www.wrh.noaa.gov/map $$ CAZ113-042315- /O.CON.KEKA.WI.Y.0036.171205T0300Z-171205T1500Z/ Southeastern Mendocino Interior- 212 AM PST Mon Dec 4 2017 ...WIND ADVISORY REMAINS IN EFFECT FROM 7 PM THIS EVENING TO 7 AM PST TUESDAY ABOVE 1500 FEET... * WINDS...East-northeasterly 20 to 35 mph with gusts from 45 to 55 mph. * LOCATIONS INCLUDE...Hills, ridges, and exposed areas above 1500 feet in elevation across southeast Mendocino county. * HIGHWAY IMPACTED...Elevated portions of Highway 175. * FOR A DETAILED VIEW OF THE HAZARD AREA...visit http://www.wrh.noaa.gov/map $$
910 WWUS76 KEKA 041014 NPWEKA URGENT - WEATHER MESSAGE National Weather Service Eureka CA 214 AM PST Mon Dec 4 2017 CAZ102-105-106-041800- /O.CON.KEKA.FZ.W.0012.000000T0000Z-171204T1800Z/ Del Norte Interior-Northern Humboldt Interior- Southern Humboldt Interior- 214 AM PST Mon Dec 4 2017 ...FREEZE WARNING REMAINS IN EFFECT UNTIL 10 AM PST THIS MORNING... * LOW TEMPERATURES...Upper 20S to lower 30S. * LOCATIONS INCLUDE...Gasquet...Orleans...Willow Creek... Garberville...Bridgeville. * FOR A DETAILED VIEW OF THE HAZARD AREA...visit http://www.wrh.noaa.gov/map $$ CAZ101-103-104-109-112-041800- /O.CON.KEKA.FR.Y.0035.000000T0000Z-171204T1800Z/ Coastal Del Norte-Northern Humboldt Coast-Southwestern Humboldt- Mendocino Coast-Southwestern Mendocino Interior- 214 AM PST Mon Dec 4 2017 ...FROST ADVISORY REMAINS IN EFFECT UNTIL 10 AM PST THIS MORNING... * LOW TEMPERATURES...Low to mid 30s. * LOCATIONS INCLUDE...Fort Bragg...Point Arena...Crescent City...Arcata...Eureka...Fortuna...Petrolia...Honeydew... ... Ettersberg...Boonville...Comptche. * FOR A DETAILED VIEW OF THE HAZARD AREA...visit http://www.wrh.noaa.gov/map $$ CAZ113-042315- /O.CON.KEKA.WI.Y.0036.171205T0300Z-171205T1500Z/ Southeastern Mendocino Interior- 214 AM PST Mon Dec 4 2017 ...WIND ADVISORY REMAINS IN EFFECT FROM 7 PM THIS EVENING TO 7 AM PST TUESDAY ABOVE 1500 FEET... * WINDS...East-northeasterly 20 to 35 mph with gusts from 45 to 55 mph. * LOCATIONS INCLUDE...Hills, ridges, and exposed areas above 1500 feet in elevation across southeast Mendocino county. * HIGHWAY IMPACTED...Elevated portions of Highway 175. * FOR A DETAILED VIEW OF THE HAZARD AREA...visit http://www.wrh.noaa.gov/map $$
509 WWUS76 KEKA 041813 NPWEKA URGENT - WEATHER MESSAGE National Weather Service Eureka CA 1013 AM PST Mon Dec 4 2017 CAZ102-050715- /O.EXP.KEKA.FZ.W.0012.000000T0000Z-171204T1800Z/ /O.NEW.KEKA.FR.Y.0036.171205T0900Z-171205T1700Z/ Del Norte Interior- 1013 AM PST Mon Dec 4 2017 ...FROST ADVISORY IN EFFECT FROM 1 AM TO 9 AM PST TUESDAY... The National Weather Service in Eureka has issued a Frost Advisory...which is in effect from 1 AM to 9 AM PST Tuesday. * LOW TEMPERATURES...33 to 36 degrees. * LOCATIONS INCLUDE...Valleys and low lying areas including Gasquet. * FOR A DETAILED VIEW OF THE HAZARD AREA...visit http://www.wrh.noaa.gov/map PRECAUTIONARY/PREPAREDNESS ACTIONS... A Frost Advisory means that frost is possible. Sensitive outdoor plants may be killed if left uncovered. && $$ CAZ105-106-041915- /O.EXP.KEKA.FZ.W.0012.000000T0000Z-171204T1800Z/ Northern Humboldt Interior-Southern Humboldt Interior- 1013 AM PST Mon Dec 4 2017 ...FREEZE WARNING HAS EXPIRED... $$ CAZ101-103-104-050715- /O.EXP.KEKA.FR.Y.0035.000000T0000Z-171204T1800Z/ /O.NEW.KEKA.FR.Y.0036.171205T0900Z-171205T1700Z/ Coastal Del Norte-Northern Humboldt Coast-Southwestern Humboldt- 1013 AM PST Mon Dec 4 2017 ...FROST ADVISORY IN EFFECT FROM 1 AM TO 9 AM PST TUESDAY... The National Weather Service in Eureka has issued a Frost Advisory...which is in effect from 1 AM to 9 AM PST Tuesday. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Frost Advisory means that frost is possible. Sensitive outdoor plants may be killed if left uncovered. && $$ CAZ109-112-041915- /O.EXP.KEKA.FR.Y.0035.000000T0000Z-171204T1800Z/ Mendocino Coast-Southwestern Mendocino Interior- 1013 AM PST Mon Dec 4 2017 ...FROST ADVISORY HAS EXPIRED... $$ CAZ113-050715- /O.EXT.KEKA.WI.Y.0036.171205T0000Z-171205T1500Z/ Southeastern Mendocino Interior- 1013 AM PST Mon Dec 4 2017 ...WIND ADVISORY NOW IN EFFECT FROM 4 PM THIS AFTERNOON TO 7 AM PST TUESDAY ABOVE 1500 FEET... * WINDS...East-northeasterly 20 to 35 mph with gusts from 45 to 55 mph. * LOCATIONS INCLUDE...Hills, ridges, and exposed areas above 1500 feet in elevation across southeast Mendocino county. * HIGHWAY IMPACTED...Elevated portions of Highway 175. * FOR A DETAILED VIEW OF THE HAZARD AREA...visit http://www.wrh.noaa.gov/map $$
The office that day
Everything else NWS Eureka, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 3, 2:34 AM PST | Coastal Flood Advisory | EKA | Humboldt | 11 hr |
| Dec 3, 8:28 AM PST | Wind Advisory | EKA | Mendocino | 47 hr |
| Dec 3, 1:54 PM PST | Freeze Warning | EKA | Del Norte, Humboldt | 20 hr |
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.