Alert archive / California / Winter Weather Advisories in 2022
Winter Weather Advisory 13, NWS Eureka, CA
NWS Eureka, CA issued this winter weather advisory at Dec 8, 2022, 9:31 AM PST for Trinity County, California. It took effect at Dec 9, 2022, 4:00 PM PST. It was in force for 12 hr.
The area
The counties it named.
The facts
- Issued
- Dec 8, 2022, 9:31 AM PST (17:31 UTC)
- In effect from
- Dec 9, 2022, 4:00 PM PST
- Expired
- Dec 10, 2022, 4:00 AM PST
- In force
- 12 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 17:31 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 12:00Z, 5.5 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
- 1071 m above ground
- 0-6 km bulk shear
- 29 kt
- 0-1 km storm-relative helicity
- 114 m²/s²
- 0-3 km storm-relative helicity
- 233 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this winter weather advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Eureka, CA wrote its last area forecast discussion before this winter weather advisory went out at Dec 7, 2:43 PM PST, 18 hours 48 minutes earlier.
Area forecast discussion, Dec 7, 2:43 PM PST, 18 hours 48 minutes before
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</html>Hazardous weather outlook, Dec 7, 2:08 PM PST, 19 hours 23 minutes before
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<div class="status" id="status">Temporary Notice</div>
<h1 id="headline">This service is currently unavailable.</h1>
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The site you requested is temporarily down for maintenance or an unexpected outage.
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Please try again in a few minutes.
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</html>The office that day
Everything else NWS Eureka, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 8, 2:37 AM PST | Gale Warning | EKA | 52 hr | |
| Dec 8, 2:37 AM PST | Storm Warning | EKA | 49 hr | |
| Dec 8, 2:52 AM PST | Wind Advisory | EKA | Del Norte, Humboldt, Lake, Mendocino | 52 hr |
| Dec 8, 9:01 AM PST | High Wind Warning | EKA | Del Norte, Humboldt, Trinity | 43 hr |
| Dec 8, 9:31 AM PST | Winter Storm Warning | EKA | 53 hr | |
| Dec 8, 9:33 AM PST | Small Craft Advisory | EKA | 27 hr |
Nearby
Winter Weather Advisories in California, 2022Every winter weather advisory in 2022
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.