Alert archive / California / Frost Advisories in 2016
Frost Advisory 14, NWS Eureka, CA
NWS Eureka, CA issued this frost advisory at Nov 1, 2016, 9:57 PM PDT for Trinity County, California. It took effect at Nov 2, 2016, 1:00 AM PDT. It was in force for 7 hr.
The area
The counties it named.
The facts
- Issued
- Nov 1, 2016, 9:57 PM PDT (04:57 UTC)
- In effect from
- Nov 2, 2016, 1:00 AM PDT
- Expired
- Nov 2, 2016, 8:00 AM PDT
- In force
- 7 hr
- Issued by
- NWS Eureka, CA
County Trinity County, CA
The radar
The Eureka (Bunker Hill) radar (KBHX), 101 km from the middle of the area, began a volume at 04:54 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, 5.0 hours before the alert went out and 193 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
- 1487 m above ground
- 0-6 km bulk shear
- 35 kt
- 0-1 km storm-relative helicity
- 6 m²/s²
- 0-3 km storm-relative helicity
- 102 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
954 WWUS76 KEKA 020457 NPWEKA URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE EUREKA CA 957 PM PDT TUE NOV 1 2016 ...LOCALIZED FROST IS EXPECTED IN SEVERAL VALLEYS ACROSS TRINITY COUNTY TONIGHT DUE TO TEMPERATURES IN THE MID 30S AND LIGHT WINDS... CAZ107-108-021500- /O.NEW.KEKA.FR.Y.0014.161102T0800Z-161102T1500Z/ NORTHERN TRINITY-SOUTHERN TRINITY- 957 PM PDT TUE NOV 1 2016 ...FROST ADVISORY IN EFFECT FROM 1 AM TO 8 AM PDT WEDNESDAY... THE NATIONAL WEATHER SERVICE IN EUREKA HAS ISSUED A FROST ADVISORY...WHICH IS IN EFFECT FROM 1 AM TO 8 AM PDT WEDNESDAY. * LOW TEMPERATURES...MID TO UPPER 30S. * LOCATIONS INCLUDE...HAYFORK...TRINITY CENTER...PEANUT...WITH LOWER PROBABILITIES IN WEAVERVILLE...JUNCTION CITY...LEWISTON. * 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. && $$
1 follow-up statement
604 WWUS76 KEKA 021443 NPWEKA URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE EUREKA CA 743 AM PDT WED NOV 2 2016 CAZ107-108-021545- /O.EXP.KEKA.FR.Y.0014.000000T0000Z-161102T1500Z/ NORTHERN TRINITY-SOUTHERN TRINITY- 743 AM PDT WED NOV 2 2016 ...FROST ADVISORY WILL EXPIRE AT 8 AM PDT THIS MORNING... OVERNIGHT TEMPERATURES DROPPED INTO THE LOW TO MID 30S. TRINITY CENTER REPORTED A LOW OF 32. HAYFORK REPORTED A LOW OF 37...WHILE RUTH OBSERVED A LOW OF 36. TEMPERATURES SHOULD BE RISING THIS MORNING WITH DAYTIME HEATING. THIS WILL BE THE FINAL STATEMENT ISSUED FOR THIS EVENT. $$
The office that day
Everything else NWS Eureka, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Nov 2, 10:45 AM PDT | Beach Hazards Statement | EKA | Del Norte, Humboldt, Mendocino | 24 hr |
Nearby
Frost Advisories in California, 2016Every frost advisory in 2016
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.