Alert archive / California / Severe Thunderstorm Warnings in 2023
Severe Thunderstorm Warning 3, NWS Eureka, CA
NWS Eureka, CA issued this severe thunderstorm warning at Aug 19, 2023, 3:10 PM PDT for Humboldt County, Mendocino County, Trinity County, California. It was in force for 20 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Aug 19, 2023, 3:10 PM PDT (22:10 UTC)
- Expired
- Aug 19, 2023, 3:30 PM PDT
- In force
- 20 min
- Issued by
- NWS Eureka, CA
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 50.0 mph
Counties Humboldt County, CA, Mendocino County, CA, Trinity County, CA
The radar
The Eureka (Bunker Hill) radar (KBHX), 83 km from the middle of the area, began a volume at 22:10 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, 10.2 hours before the alert went out and 256 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
- 1937 m above ground
- 0-6 km bulk shear
- 11 kt
- 0-1 km storm-relative helicity
- 16 m²/s²
- 0-3 km storm-relative helicity
- 60 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
267 WUUS56 KEKA 192210 SVREKA CAC023-045-105-192230- /O.NEW.KEKA.SV.W.0003.230819T2210Z-230819T2230Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Warning National Weather Service Eureka CA 310 PM PDT Sat Aug 19 2023 The National Weather Service in Eureka California has issued a * Severe Thunderstorm Warning for... Northern Mendocino County in northwestern California... Southern Humboldt County in northwestern California... Southwestern Trinity County in northwestern California... * Until 330 PM PDT. * At 310 PM PDT, a severe thunderstorm was located 9 miles southeast of Alderpoint, or 18 miles east of Garberville, and is nearly stationary. HAZARD...Quarter size hail. Gusts to 50 mph. SOURCE...Radar indicated. IMPACT...Damage to vehicles is expected. * Locations impacted include... Zenia. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a building. && LAT...LON 4022 12343 4007 12329 3993 12346 4015 12366 TIME...MOT...LOC 2210Z 054DEG 2KT 4011 12344 HAIL THREAT...RADAR INDICATED MAX HAIL SIZE...1.00 IN WIND THREAT...RADAR INDICATED MAX WIND GUST...<50 MPH $$ MKK
The office that day
Everything else NWS Eureka, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 18, 5:26 PM PDT | Special Weather Statement | EKA | Trinity | 34 min |
| Aug 18, 5:32 PM PDT | Special Weather Statement | EKA | Trinity | 28 min |
| Aug 18, 6:26 PM PDT | Special Weather Statement | EKA | Trinity | 34 min |
| Aug 19, 3:35 AM PDT | Red Flag Warning | EKA | 16 hr | |
| Aug 19, 9:02 AM PDT | Small Craft Advisory | EKA | 39 hr | |
| Aug 19, 12:36 PM PDT | Special Weather Statement | EKA | Trinity | 39 min |
| Aug 19, 1:15 PM PDT | Flash Flood Warning | EKA | Trinity | 3 hr |
| Aug 19, 2:30 PM PDT | Special Weather Statement | EKA | 45 min | |
| Aug 19, 2:32 PM PDT | Special Weather Statement | EKA | Mendocino | 43 min |
| Aug 19, 2:41 PM PDT | Special Weather Statement | EKA | Trinity | 34 min |
| Aug 19, 2:45 PM PDT | Special Weather Statement | EKA | Humboldt | 45 min |
| Aug 19, 2:54 PM PDT | Special Weather Statement | EKA | Humboldt | 36 min |
| Aug 19, 3:17 PM PDT | Special Weather Statement | EKA | Trinity | 43 min |
| Aug 19, 3:50 PM PDT | Flash Flood Warning | EKA | Trinity | 85 min |
Nearby
Severe Thunderstorm Warnings in California, 2023Every severe thunderstorm warning 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.