Alert archive / California / Special Weather Statements in 2017
Special Weather Statement, NWS Eureka, CA
NWS Eureka, CA issued this special weather statement at Aug 8, 2017, 3:49 PM PDT for Trinity County, California. It was in force for 26 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 8, 2017, 3:49 PM PDT (22:49 UTC)
- Expired
- Aug 8, 2017, 4:15 PM PDT
- In force
- 26 min
- Issued by
- NWS Eureka, CA
County Trinity County, CA
The radar
The Eureka (Bunker Hill) radar (KBHX), 94 km from the middle of the area, began a volume at 22:53 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 12:00Z, 10.8 hours before the alert went out and 232 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
- 77 J/kg
- Mixed-layer CIN
- -482 J/kg
- Mixed-layer LCL
- 1734 m above ground
- 0-6 km bulk shear
- 2 kt
- 0-1 km storm-relative helicity
- -3 m²/s²
- 0-3 km storm-relative helicity
- 42 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
731
WWUS86 KEKA 082249
SPSEKA
Special Weather Statement
National Weather Service Eureka CA
349 PM PDT TUE AUG 8 2017
CAZ108-082315-
Southern Trinity-
349 PM PDT TUE AUG 8 2017
...A STRONG THUNDERSTORM WILL AFFECT SOUTH CENTRAL TRINITY COUNTY...
At 348 PM PDT, a strong thunderstorm was located 8 miles east of
Forest Glen, or 11 miles west of Yolla Bolly District Rs. the storm
is nearly stationary.
Winds in excess of 30 mph and half inch hail are possible with this
storm.
Locations impacted include...
Forest Glen.
LAT...LON 4042 12308 4017 12315 4018 12325 4018 12337
4048 12330
TIME...MOT...LOC 2248Z 093DEG 3KT 4034 12318
$$
JMG/RCLThe office that day
Everything else NWS Eureka, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 7, 5:04 PM PDT | Special Weather Statement | EKA | 11 min | |
| Aug 7, 5:16 PM PDT | Special Weather Statement | EKA | Trinity | 29 min |
| Aug 7, 5:25 PM PDT | Special Weather Statement | EKA | Trinity | 35 min |
| Aug 7, 5:37 PM PDT | Special Weather Statement | EKA | Trinity | 23 min |
| Aug 7, 5:55 PM PDT | Special Weather Statement | EKA | Trinity | 35 min |
| Aug 7, 6:27 PM PDT | Special Weather Statement | EKA | 33 min | |
| Aug 7, 8:15 PM PDT | Fire Weather Watch | EKA | 7 hr | |
| Aug 8, 3:22 AM PDT | Red Flag Warning | EKA | 17 hr | |
| Aug 8, 3:22 PM PDT | Special Weather Statement | EKA | Trinity | 23 min |
| Aug 8, 3:34 PM PDT | Special Weather Statement | EKA | 26 min | |
| Aug 8, 3:52 PM PDT | Red Flag Warning | EKA | 28 hr | |
| Aug 8, 3:58 PM PDT | Special Weather Statement | EKA | 32 min | |
| Aug 8, 4:12 PM PDT | Special Weather Statement | EKA | Trinity | 33 min |
| Aug 8, 4:35 PM PDT | Special Weather Statement | EKA | Glenn | 25 min |
| Aug 8, 4:42 PM PDT | Special Weather Statement | EKA | Trinity | 18 min |
Nearby
Special Weather Statements in California, 2017Every special weather statement in 2017
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.