Alert archive / California / Severe Thunderstorm Warnings in 2024
Severe Thunderstorm Warning 3, NWS Eureka, CA
NWS Eureka, CA issued this severe thunderstorm warning at Aug 17, 2024, 3:11 PM PDT for Trinity County, California. It was in force for 34 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 17, 2024, 3:11 PM PDT (22:11 UTC)
- Expired
- Aug 17, 2024, 3:45 PM PDT
- In force
- 34 min
- Issued by
- NWS Eureka, CA
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
County Trinity County, CA
The radar
The Medford radar (KMAX), 126 km from the middle of the area, began a volume at 22:11 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Aug 17, 1:22 PM PDT | Severe Thunderstorm Watch | SPC | 8 hr |
The nearest sounding before it
Medford/Jackson, OR (KMFR), launched 12:00Z, 10.2 hours before the alert went out and 157 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
- 1389 m above ground
- 0-6 km bulk shear
- 40 kt
- 0-1 km storm-relative helicity
- 49 m²/s²
- 0-3 km storm-relative helicity
- 187 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.1
The text
As transmitted.
726
WUUS56 KEKA 172211
SVREKA
CAC105-172245-
/O.NEW.KEKA.SV.W.0003.240817T2211Z-240817T2245Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Eureka CA
311 PM PDT Sat Aug 17 2024
The National Weather Service in Eureka California has issued a
* Severe Thunderstorm Warning for...
Central Trinity County in northwestern California...
* Until 345 PM PDT.
* At 310 PM PDT, a severe thunderstorm was located 8 miles north of
Weaverville, moving northeast at 30 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage
to roofs, siding, and trees.
* This severe thunderstorm will remain over mainly rural areas of
central Trinity County.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4081 12286 4086 12300 4102 12305 4101 12304
4101 12297 4099 12294 4100 12291 4103 12290
4104 12281 4096 12275
TIME...MOT...LOC 2210Z 225DEG 42KT 4088 12290
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
ZVS1 follow-up statement
234
WWUS56 KEKA 172239
SVSEKA
Severe Weather Statement
National Weather Service Eureka CA
339 PM PDT Sat Aug 17 2024
CAC105-172249-
/O.EXP.KEKA.SV.W.0003.000000T0000Z-240817T2245Z/
Trinity CA-
339 PM PDT Sat Aug 17 2024
...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL TRINITY COUNTY WILL
EXPIRE AT 345 PM PDT...
The storm which prompted the warning has moved out of the area.
Therefore, the warning will be allowed to expire.
A Severe Thunderstorm Watch remains in effect until 900 PM PDT for
northwestern California.
&&
LAT...LON 4081 12286 4086 12300 4102 12305 4101 12304
4101 12297 4099 12294 4100 12291 4103 12290
4104 12281 4096 12275
TIME...MOT...LOC 2239Z 225DEG 42KT 4108 12260
$$
ZVSThe office that day
Everything else NWS Eureka, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 17, 11:46 AM PDT | Special Weather Statement | EKA | Trinity | 29 min |
| Aug 17, 12:11 PM PDT | Special Weather Statement | EKA | Trinity | 34 min |
| Aug 17, 12:46 PM PDT | Special Weather Statement | EKA | Siskiyou | 29 min |
| Aug 17, 1:03 PM PDT | Severe Thunderstorm Warning | EKA | Trinity | 27 min |
| Aug 17, 1:41 PM PDT | Special Weather Statement | EKA | Trinity | 34 min |
| Aug 17, 2:11 PM PDT | Special Weather Statement | EKA | Siskiyou | 34 min |
| Aug 17, 2:15 PM PDT | Special Weather Statement | EKA | 30 min | |
| Aug 17, 2:19 PM PDT | Special Marine Warning | EKA | 41 min | |
| Aug 17, 2:22 PM PDT | Special Weather Statement | EKA | Trinity | 23 min |
| Aug 17, 2:42 PM PDT | Special Weather Statement | EKA | Mendocino | 33 min |
| Aug 17, 2:44 PM PDT | Special Weather Statement | EKA | Trinity | 31 min |
| Aug 17, 2:48 PM PDT | Severe Thunderstorm Warning | EKA | Trinity | 27 min |
| Aug 17, 3:00 PM PDT | Special Weather Statement | EKA | Trinity | 30 min |
| Aug 17, 3:05 PM PDT | Special Weather Statement | EKA | Del Norte | 25 min |
| Aug 17, 3:22 PM PDT | Special Weather Statement | EKA | Trinity | 23 min |
| Aug 17, 3:30 PM PDT | Severe Thunderstorm Warning | EKA | Trinity | 30 min |
| Aug 17, 3:35 PM PDT | Special Weather Statement | EKA | Trinity | 25 min |
Nearby
Severe Thunderstorm Warnings in California, 2024Every severe thunderstorm warning in 2024
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.