Alert archive / California / High Surf Advisories in 2023
High Surf Advisory 3, NWS Eureka, CA
NWS Eureka, CA issued this high surf advisory at Jan 14, 2023, 4:29 AM PST for Del Norte County, Humboldt County, Mendocino County, California. It took effect at Jan 14, 2023, 3:00 PM PST. It was in force for 11 hr.
The area
The counties it named.
The facts
- Issued
- Jan 14, 2023, 4:29 AM PST (12:29 UTC)
- In effect from
- Jan 14, 2023, 3:00 PM PST
- Expired
- Jan 15, 2023, 1:46 AM PST
- In force
- 11 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 12:31 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
Oakland, CA (KOAK), launched 12:00Z, 0.5 hours before the alert went out and 349 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
- 30 J/kg
- Mixed-layer CIN
- -16 J/kg
- Mixed-layer LCL
- 623 m above ground
- 0-6 km bulk shear
- 41 kt
- 0-1 km storm-relative helicity
- 196 m²/s²
- 0-3 km storm-relative helicity
- 277 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this high surf 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 high surf advisory went out at Jan 13, 3:35 PM PST, 12 hours 54 minutes earlier.
Area forecast discussion, Jan 13, 3:35 PM PST, 12 hours 54 minutes before
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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 |
|---|---|---|---|---|
| Jan 14, 3:18 AM PST | Hazardous Seas Warning | EKA | 42 hr | |
| Jan 14, 3:32 AM PST | Winter Weather Advisory | EKA | 24 hr | |
| Jan 14, 4:41 AM PST | River Flood Watch | EKA | Humboldt | 17 hr |
| Jan 14, 6:51 AM PST | Areal Flood Advisory | EKA | Lake, Mendocino | 3 hr |
Nearby
High Surf Advisories in California, 2023Every high surf advisory in 2023
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.