Alert archive / California / Frost Advisories in 2017
Frost Advisory 4, NWS Eureka, CA
NWS Eureka, CA issued this frost advisory at Mar 22, 2017, 3:47 PM PDT for Mendocino County, California. It took effect at Mar 23, 2017, 12:00 AM PDT. It was in force for 8 hr.
The area
The counties it named.
The facts
- Issued
- Mar 22, 2017, 3:47 PM PDT (22:47 UTC)
- In effect from
- Mar 23, 2017, 12:00 AM PDT
- Expired
- Mar 23, 2017, 8:00 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 22:48 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 12:00Z, 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
- 74 J/kg
- Mixed-layer CIN
- -28 J/kg
- Mixed-layer LCL
- 565 m above ground
- 0-6 km bulk shear
- 42 kt
- 0-1 km storm-relative helicity
- -73 m²/s²
- 0-3 km storm-relative helicity
- -17 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The text
As transmitted.
351 WWUS76 KEKA 222247 NPWEKA URGENT - WEATHER MESSAGE National Weather Service Eureka CA 347 PM PDT Wed Mar 22 2017 CAZ110-111-231200- /O.NEW.KEKA.FR.Y.0004.170323T0700Z-170323T1500Z/ Northwestern Mendocino Interior-Northeastern Mendocino Interior- 347 PM PDT Wed Mar 22 2017 ...FROST ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO 8 AM PDT THURSDAY... The National Weather Service in Eureka has issued a Frost Advisory...which is in effect from midnight tonight to 8 AM PDT Thursday. * TEMPERATURES...33 to 36 degrees. * LOCATIONS INCLUDE...Covelo...Laytonville..Willits...Potter Valley...Leggett. Some persistent clouds and overnight fog may restrict frost development in a few valleys...but patchy frost cannot be ruled out throughout the valleys of northern Mendocino county. * 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. && $$ CAZ101-231200- /O.CON.KEKA.WI.Y.0022.170324T0000Z-170324T1200Z/ Coastal Del Norte- 347 PM PDT Wed Mar 22 2017 ...WIND ADVISORY REMAINS IN EFFECT FROM 5 PM THURSDAY TO 5 AM PDT FRIDAY... The National Weather Service in Eureka has issued a Wind Advisory...which is in effect from 5 PM Thursday to 5 AM PDT Friday. * WINDS...SOUTH 25 TO 35 MPH WITH GUSTS TO 55 MPH. * LOCATIONS INCLUDE...Crescent City. * HIGHWAY(S) IMPACTED...US 101. * FOR A DETAILED VIEW OF THE HAZARD AREA...visit http://www.wrh.noaa.gov/map PRECAUTIONARY/PREPAREDNESS ACTIONS... A Wind Advisory means that winds of 35 mph are expected. Winds this strong can make driving difficult,especially for high profile vehicles. Use extra caution. $$ CAZ102-104>106-231200- /O.CON.KEKA.WI.Y.0022.170324T0000Z-170324T1200Z/ Del Norte Interior-Southwestern Humboldt- Northern Humboldt Interior-Southern Humboldt Interior- 347 PM PDT Wed Mar 22 2017 ...WIND ADVISORY REMAINS IN EFFECT FROM 5 PM THURSDAY TO 5 AM PDT FRIDAY ABOVE 1000 FEET... The National Weather Service in Eureka has issued a Wind Advisory...which is in effect from 5 PM Thursday to 5 AM PDT Friday. * WINDS...South 30 to 40 mph with gusts of 50 to 65 mph. * LOCATIONS INCLUDE...Exposed locations above 1000 feet. * HIGHWAY(S) IMPACTED...Highway 199...US 101...Highway 299...Highway 36. * 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 are expected. Winds this strong can make driving difficult,especially for high profile vehicles. Use extra caution. $$
2 follow-up statements
520 WWUS76 KEKA 231204 NPWEKA URGENT - WEATHER MESSAGE National Weather Service Eureka CA 504 AM PDT Thu Mar 23 2017 CAZ110-111-231500- /O.CON.KEKA.FR.Y.0004.000000T0000Z-170323T1500Z/ Northwestern Mendocino Interior-Northeastern Mendocino Interior- 504 AM PDT Thu Mar 23 2017 ...FROST ADVISORY REMAINS IN EFFECT UNTIL 8 AM PDT THIS MORNING BELOW 3000 FEET... * LOCATIONS INCLUDE...Covelo...Laytonville..Willits...Potter Valley...Leggett. Some persistent clouds and overnight fog may restrict frost development in a few valleys...but patchy frost cannot be ruled out throughout the valleys of northern Mendocino county. * FOR A DETAILED VIEW OF THE HAZARD AREA...visit http://www.wrh.noaa.gov/map PRECAUTIONARY/PREPAREDNESS ACTIONS... A Frost Advisory means that frost is possible. Sensitive outdoor plants may be killed if left uncovered. $$ CAZ101-231515- /O.CON.KEKA.WI.Y.0022.170324T0000Z-170324T1200Z/ Coastal Del Norte- 504 AM PDT Thu Mar 23 2017 ...WIND ADVISORY REMAINS IN EFFECT FROM 5 PM THIS AFTERNOON TO 5 AM PDT FRIDAY... * WINDS...SOUTH 25 TO 35 MPH WITH GUSTS TO 55 MPH.. * LOCATIONS INCLUDE...Crescent City.... * HIGHWAY(S) IMPACTED...US 101. * 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 are expected. Winds this strong can make driving difficult,especially for high profile vehicles. Use extra caution. $$ CAZ102-104>106-231515- /O.CON.KEKA.WI.Y.0022.170324T0000Z-170324T1200Z/ Del Norte Interior-Southwestern Humboldt- Northern Humboldt Interior-Southern Humboldt Interior- 504 AM PDT Thu Mar 23 2017 ...WIND ADVISORY REMAINS IN EFFECT FROM 5 PM THIS AFTERNOON TO 5 AM PDT FRIDAY ABOVE 1000 FEET... * WINDS...South 30 to 40 mph with gusts of 50 to 65 mph. * LOCATIONS INCLUDE...Exposed locations above 1000 feet. * HIGHWAY(S) IMPACTED...Highway 199...US 101...Highway 299...Highway 36. * FOR A DETAILED VIEW OF THE HAZARD AREA...visit http://www.wrh.noaa.gov/map PRECAUTIONARY/PREPAREDNESS ACTIONS... A Wind Advisory means that winds of 35 mph are expected. Winds this strong can make driving difficult,especially for high profile vehicles. Use extra caution. $$
009 WWUS76 KEKA 231452 NPWEKA URGENT - WEATHER MESSAGE National Weather Service Eureka CA 752 AM PDT Thu Mar 23 2017 CAZ110-111-231600- /O.EXP.KEKA.FR.Y.0004.000000T0000Z-170323T1500Z/ Northwestern Mendocino Interior-Northeastern Mendocino Interior- 752 AM PDT Thu Mar 23 2017 ...FROST ADVISORY WILL EXPIRE AT 8 AM PDT THIS MORNING BELOW 3000 FEET... Temperatures early this morning remain in the low to mid 30s across mainly interior Mendocino county from roughly the highway 101 corridor eastward. However, temperatures will rise quickly this morning, and any lingering frost will melt quickly as the sun rises. Thus, the advisory has been allowed to expire. $$ CAZ101-240400- /O.CON.KEKA.WI.Y.0022.170324T0000Z-170324T1200Z/ Coastal Del Norte- 752 AM PDT Thu Mar 23 2017 ...WIND ADVISORY REMAINS IN EFFECT FROM 5 PM THIS AFTERNOON TO 5 AM PDT FRIDAY... * WINDS...SOUTH 25 TO 35 MPH WITH GUSTS TO 55 MPH.. * LOCATIONS INCLUDE...Crescent City.... * HIGHWAY(S) IMPACTED...US 101. * FOR A DETAILED VIEW OF THE HAZARD AREA...visit http://www.wrh.noaa.gov/map PRECAUTIONARY/PREPAREDNESS ACTIONS... A Wind Advisory means that winds of 35 mph are expected. Winds this strong can make driving difficult,especially for high profile vehicles. Use extra caution. $$ CAZ102-104>106-240400- /O.CON.KEKA.WI.Y.0022.170324T0000Z-170324T1200Z/ Del Norte Interior-Southwestern Humboldt- Northern Humboldt Interior-Southern Humboldt Interior- 752 AM PDT Thu Mar 23 2017 ...WIND ADVISORY REMAINS IN EFFECT FROM 5 PM THIS AFTERNOON TO 5 AM PDT FRIDAY ABOVE 1000 FEET... * WINDS...South 30 to 40 mph with gusts of 50 to 65 mph. * LOCATIONS INCLUDE...Exposed locations above 1000 feet. * HIGHWAY(S) IMPACTED...Highway 199...US 101...Highway 299...Highway 36. * 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 are expected. Winds this strong can make driving difficult,especially for high profile vehicles. Use extra caution. $$
The office that day
Everything else NWS Eureka, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 22, 3:06 AM PDT | Gale Watch | EKA | 11 hr | |
| Mar 22, 2:17 PM PDT | Gale Warning | EKA | 43 hr | |
| Mar 22, 2:17 PM PDT | Small Craft Advisory | EKA | 61 hr | |
| Mar 22, 2:26 PM PDT | Wind Advisory | EKA | Del Norte, Humboldt | 39 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.