Alert archive / California / Coastal Flood Advisories in 2021
Coastal Flood Advisory 5, NWS Eureka, CA
NWS Eureka, CA issued this coastal flood advisory at Jan 28, 2021, 4:16 AM PST for Humboldt County, California. It took effect at Jan 28, 2021, 10:00 AM PST. It was in force for 2 hr.
The area
The counties it named.
The facts
- Issued
- Jan 28, 2021, 4:16 AM PST (12:16 UTC)
- In effect from
- Jan 28, 2021, 10:00 AM PST
- Expired
- Jan 28, 2021, 12:00 PM PST
- In force
- 2 hr
- Issued by
- NWS Eureka, CA
County Humboldt County, CA
The radar
The Eureka (Bunker Hill) radar (KBHX), 39 km from the middle of the area, began a volume at 12:15 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, 0.3 hours before the alert went out and 362 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
- 27 J/kg
- Mixed-layer CIN
- -5 J/kg
- Mixed-layer LCL
- 571 m above ground
- 0-6 km bulk shear
- 68 kt
- 0-1 km storm-relative helicity
- -3 m²/s²
- 0-3 km storm-relative helicity
- 36 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this coastal flood 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 coastal flood advisory went out at Jan 27, 3:03 PM PST, 13 hours 13 minutes earlier.
Area forecast discussion, Jan 27, 3:03 PM PST, 13 hours 13 minutes before
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</html>Hazardous weather outlook, Jan 28, 3:55 AM PST, 21 minutes before
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Local storm report, Jan 27, 10:18 PM PST, 5 hours 58 minutes before
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</html>Nearby
Coastal Flood Advisories in California, 2021Every coastal flood advisory in 2021
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.