Alert archive / California / Special Weather Statements in 2017
Special Weather Statement, NWS Eureka, CA
NWS Eureka, CA issued this special weather statement at Aug 6, 2017, 3:16 PM PDT for Glenn County, California. It was in force for 14 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 6, 2017, 3:16 PM PDT (22:16 UTC)
- Expired
- Aug 6, 2017, 3:30 PM PDT
- In force
- 14 min
- Issued by
- NWS Eureka, CA
County Glenn County, CA
The radar
The Beale AFB radar (KBBX), 111 km from the middle of the area, began a volume at 22:17 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, 10.3 hours before the alert went out and 217 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
- 851 m above ground
- 0-6 km bulk shear
- 18 kt
- 0-1 km storm-relative helicity
- -10 m²/s²
- 0-3 km storm-relative helicity
- 48 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
491
WWUS86 KEKA 062216
SPSEKA
Special Weather Statement
National Weather Service Eureka CA
316 PM PDT SUN AUG 6 2017
CAZ111-062230-
Northeastern Mendocino Interior CA-
316 PM PDT SUN AUG 6 2017
...SIGNIFICANT WEATHER ADVISORY FOR EAST CENTRAL MENDOCINO COUNTY
UNTIL 330 PM PDT...
At 315 PM PDT, Doppler radar was tracking a strong thunderstorm 10
miles west of Alder Springs. this storm was nearly stationary.
Half inch to dime size hail will be possible with this storm.
This storm will remain over mainly rural areas of east central
Mendocino County.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.
Persons in campgrounds should consider seeking sturdy shelter until
this storm passes.
&&
LAT...LON 3955 12294 3962 12297 3966 12290 3966 12289
3956 12289
TIME...MOT...LOC 2215Z 327DEG 3KT 3960 12291
$$
KRThe office that day
Everything else NWS Eureka, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 6, 2:18 PM PDT | Special Weather Statement | EKA | Trinity | 12 min |
| Aug 6, 2:33 PM PDT | Special Weather Statement | EKA | Trinity | 12 min |
| Aug 6, 2:48 PM PDT | Special Weather Statement | EKA | 12 min | |
| Aug 6, 2:54 PM PDT | Special Weather Statement | EKA | Trinity | 21 min |
| Aug 6, 2:58 PM PDT | Special Weather Statement | EKA | Trinity | 17 min |
| Aug 6, 3:08 PM PDT | Special Weather Statement | EKA | Trinity | 22 min |
| Aug 6, 3:32 PM PDT | Special Weather Statement | EKA | Trinity | 13 min |
| Aug 6, 3:37 PM PDT | Special Weather Statement | EKA | 8 min | |
| Aug 6, 3:49 PM PDT | Special Weather Statement | EKA | Trinity | 11 min |
| Aug 6, 4:04 PM PDT | Special Weather Statement | EKA | Siskiyou | 26 min |
| Aug 6, 4:16 PM PDT | Special Weather Statement | EKA | Trinity | 14 min |
| Aug 6, 4:39 PM PDT | Special Weather Statement | EKA | Siskiyou | 21 min |
| Aug 6, 4:53 PM PDT | Special Weather Statement | EKA | Trinity | 22 min |
| Aug 6, 4:57 PM PDT | Special Weather Statement | EKA | Siskiyou | 33 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.