Alert archive / California / Wind Advisories in 2021
Wind Advisory 20, NWS Eureka, CA
NWS Eureka, CA issued this wind advisory at Dec 11, 2021, 10:53 PM PST for Humboldt County, California. It was in force for 2 hr.
The area
The counties it named.
The facts
- Issued
- Dec 11, 2021, 10:53 PM PST (06:53 UTC)
- Expired
- Dec 12, 2021, 1:00 AM 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 06:53 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, 6.9 hours before the alert went out and 207 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
- 738 m above ground
- 0-6 km bulk shear
- 69 kt
- 0-1 km storm-relative helicity
- 310 m²/s²
- 0-3 km storm-relative helicity
- 707 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
071 WWUS76 KEKA 120653 NPWEKA URGENT - WEATHER MESSAGE National Weather Service Eureka CA 1053 PM PST Sat Dec 11 2021 CAZ104>106-120800- /O.NEW.KEKA.WI.Y.0020.211212T0653Z-211212T0800Z/ Southwestern Humboldt-Northern Humboldt Interior- Southern Humboldt Interior- 1053 PM PST Sat Dec 11 2021 ...WIND ADVISORY IN EFFECT UNTIL MIDNIGHT PST TONIGHT ABOVE 1000 FEET... * WHAT...South winds 20 to 30 mph with gusts up to 45 mph above 1000 feet. * WHERE...Southwestern Humboldt, Northern Humboldt Interior and Southern Humboldt Interior Counties. * WHEN...Until midnight PST tonight. * IMPACTS...Gusty winds could blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. && $$
2 follow-up statements
551 WWUS76 KEKA 120751 NPWEKA URGENT - WEATHER MESSAGE National Weather Service Eureka CA 1151 PM PST Sat Dec 11 2021 CAZ104>106-120900- /O.EXT.KEKA.WI.Y.0020.000000T0000Z-211212T0900Z/ Southwestern Humboldt-Northern Humboldt Interior- Southern Humboldt Interior- 1151 PM PST Sat Dec 11 2021 ...WIND ADVISORY NOW IN EFFECT UNTIL 1 AM PST SUNDAY ABOVE 2000 FEET... * WHAT...South winds 20 to 30 mph with gusts up to 50 mph above 2000 feet. * WHERE...Northern Humboldt Interior, Southwestern Humboldt and Southern Humboldt Interior Counties. * WHEN...Until 1 AM PST Sunday. * IMPACTS...Gusty winds could blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. && $$
985 WWUS76 KEKA 120859 NPWEKA URGENT - WEATHER MESSAGE National Weather Service Eureka CA 1259 AM PST Sun Dec 12 2021 CAZ104>106-121000- /O.EXP.KEKA.WI.Y.0020.000000T0000Z-211212T0900Z/ Southwestern Humboldt-Northern Humboldt Interior- Southern Humboldt Interior- 1259 AM PST Sun Dec 12 2021 ...WIND ADVISORY WILL EXPIRE AT 1 AM PST EARLY THIS MORNING ABOVE 2000 FEET... Some wind gusts of 30 to 40 mph over exposed ridges with some higher gusts over mountaintops will linger for another couple of hours, otherwise, winds will steadily diminish overnight into Sunday morning. $$
The office that day
Everything else NWS Eureka, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 11, 10:05 PM PST | Gale Warning | EKA | 55 min | |
| Dec 12, 12:51 AM PST | Hazardous Seas Warning | EKA | 8 hr | |
| Dec 12, 5:17 AM PST | Winter Storm Warning | EKA | Del Norte, Humboldt, Trinity | 41 hr |
| Dec 12, 9:09 AM PST | Small Craft Advisory | EKA | 70 hr | |
| Dec 12, 3:49 PM PST | Gale Warning | EKA | 10 hr | |
| Dec 12, 3:49 PM PST | Small Craft Advisory | EKA | 5 hr |
Nearby
Wind Advisories in California, 2021Every wind 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.