Alert archive / California / Severe Thunderstorm Warnings in 2009
Severe Thunderstorm Warning 6, NWS Eureka, CA
NWS Eureka, CA issued this severe thunderstorm warning at Jun 2, 2009, 2:59 PM PDT for Trinity County, California. It was in force for 16 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
- Jun 2, 2009, 2:59 PM PDT (21:59 UTC)
- Expired
- Jun 2, 2009, 3:15 PM PDT
- In force
- 16 min
- Issued by
- NWS Eureka, CA
- Area
- Storm-based polygon
County Trinity County, CA
The radar
The Eureka (Bunker Hill) radar (KBHX), 83 km from the middle of the area, began a volume at 22:01 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, 10.0 hours before the alert went out and 196 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
- 169 J/kg
- Mixed-layer CIN
- -139 J/kg
- Mixed-layer LCL
- 733 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- 37 m²/s²
- 0-3 km storm-relative helicity
- 40 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WUUS56 KEKA 022159 SVREKA CAC105-022215- /O.NEW.KEKA.SV.W.0006.090602T2159Z-090602T2215Z/ BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE EUREKA CA 259 PM PDT TUE JUN 2 2009 THE NATIONAL WEATHER SERVICE IN EUREKA HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... CENTRAL TRINITY COUNTY IN NORTHWEST CALIFORNIA... * UNTIL 315 PM PDT * AT 257 PM PDT...TRAINED WEATHER SPOTTERS REPORTED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL. THIS STORM WAS LOCATED 13 MILES SOUTH OF BIG BAR...OR 19 MILES NORTHWEST OF YOLLA BOLLY DISTRICT RS...AND MOVING NORTH AT 20 MPH. * THE SEVERE THUNDERSTORM WILL OTHERWISE REMAIN OVER MAINLY RURAL AREAS OF THE INDICATED COUNTY. PRECAUTIONARY/PREPAREDNESS ACTIONS... THIS IS A DANGEROUS STORM WITH A HISTORY OF PRODUCING HAIL. IF YOU ARE IN ITS PATH...PREPARE IMMEDIATELY FOR DAMAGING WINDS...DESTRUCTIVE HAIL...AND DEADLY CLOUD TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...PREFERABLY INSIDE A STRONG BUILDING BUT AWAY FROM WINDOWS. && LAT...LON 4075 12349 4080 12318 4050 12313 4046 12334 TIME...MOT...LOC 2159Z 165DEG 22KT 4055 12325 $$ BK
1 follow-up statement
000 WWUS56 KEKA 022219 SVSEKA SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE EUREKA CA 319 PM PDT TUE JUN 2 2009 CAC105-022228- /O.EXP.KEKA.SV.W.0006.000000T0000Z-090602T2215Z/ TRINITY CA- 319 PM PDT TUE JUN 2 2009 ...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL TRINITY COUNTY HAS EXPIRED... THE THUNDERSTORM THAT PROMPTED THE WARNING HAS WEAKENED AND IS NO LONGER EXPECTED TO PRODUCE LARGE HAIL OR DAMAGING WINDS. THUNDERSTORM ACTIVITY WILL CONTINUE INTO THE EVENING HOURS. LAT...LON 4075 12349 4080 12318 4050 12313 4046 12334 TIME...MOT...LOC 2159Z 165DEG 22KT 4055 12325 $$ BK
The office that day
Everything else NWS Eureka, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 2, 1:49 PM PDT | Severe Thunderstorm Warning | EKA | Humboldt | 17 min |
| Jun 2, 2:15 PM PDT | Severe Thunderstorm Warning | EKA | Del Norte | 30 min |
| Jun 2, 2:26 PM PDT | Severe Thunderstorm Warning | EKA | Trinity | 34 min |
Nearby
Severe Thunderstorm Warnings in California, 2009Every severe thunderstorm warning in 2009
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.