Alert archive / California / Severe Thunderstorm Warnings in 2005
Severe Thunderstorm Warning 21, NWS Sacramento, CA
NWS Sacramento, CA issued this severe thunderstorm warning at Apr 8, 2005, 2:15 PM PDT for Butte County, Glenn County, California. It was in force for 31 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
- Apr 8, 2005, 2:15 PM PDT (21:15 UTC)
- Expired
- Apr 8, 2005, 2:46 PM PDT
- In force
- 31 min
- Issued by
- NWS Sacramento, CA
- Area
- Counties, with a storm outline in the text
Counties Butte County, CA, Glenn County, CA
The radar
The Beale AFB radar (KBBX), 40 km from the middle of the area, began a volume at 21:21 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, 9.3 hours before the alert went out and 220 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
- 18 J/kg
- Mixed-layer CIN
- -1 J/kg
- Mixed-layer LCL
- 886 m above ground
- 0-6 km bulk shear
- 58 kt
- 0-1 km storm-relative helicity
- 71 m²/s²
- 0-3 km storm-relative helicity
- 167 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 KSTO 082117 SVRSTO CAC007-021-082145- /O.NEW.KSTO.SV.W.0021.050408T2115Z-050408T2145Z/ BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE SACRAMENTO CA 215 PM PDT FRI APR 8 2005 THE NATIONAL WEATHER SERVICE IN SACRAMENTO HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... WEST CENTRAL BUTTE COUNTY IN CALIFORNIA NORTHEASTERN GLENN COUNTY IN CALIFORNIA * UNTIL 245 PM PDT * AT 208 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING DIME SIZE HAIL. THIS STORM WAS LOCATED NEAR HAMILTON CITY...OR ABOUT NEAR ORLAND. THIS STORM WAS NEARLY STATIONARY. * THE SEVERE THUNDERSTORM WILL OTHERWISE REMAIN OVER MAINLY RURAL AREAS OF THE INDICATED COUNTY. DOPPLER RADAR HAS INDICATED SOME WEAK ROTATION WITHIN THIS STORM. WHILE NOT IMMEDIATELY LIKELY...A TORNADO MAY STILL DEVELOP. IF A TORNADO IS SPOTTED...ACT QUICKLY AND MOVE TO A PLACE OF SAFETY IN A STURDY STRUCTURE...SUCH AS A BASEMENT OR SMALL INTERIOR ROOM. THE PUBLIC REPORTED HAIL TO A DEPTH OF ONE INCH COVERING PORTIONS OF COUNTY ROAD 24 NEAR PLAZA SCHOOL. FUNNEL CLOUDS WERE ALSO EARLIER REPORTED WITH THIS STORM. LAT...LON 3966 12214 3964 12184 3981 12184 3975 12213 $$ JJ
2 follow-up statements
000 WWUS56 KSTO 082134 SVSSTO SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE SACRAMENTO CA 234 PM PDT FRI APR 8 2005 CAC007-021-082145- /O.CON.KSTO.SV.W.0021.000000T0000Z-050408T2145Z/ BUTTE CA-GLENN CA- 234 PM PDT FRI APR 8 2005 ...A SEVERE THUNDERSTORM WARNING CONTINUES UNTIL 245 PM PDT FOR NORTHEASTERN GLENN AND WEST CENTRAL BUTTE COUNTIES... AT 230 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING DIME SIZE HAIL. THIS STORM WAS LOCATED NEAR HAMILTON CITY...OR ABOUT 8 MILES EAST OF ORLAND...MOVING EAST AT 10 MPH. LAT...LON 3967 12206 3967 12184 3977 12186 3973 12206 $$ JJ
000 WWUS56 KSTO 082146 SVSSTO SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE SACRAMENTO CA 244 PM PDT FRI APR 8 2005 CAC007-021-082154- /O.EXP.KSTO.SV.W.0021.000000T0000Z-050408T2145Z/ BUTTE CA-GLENN CA- 244 PM PDT FRI APR 8 2005 ...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN GLENN AND WEST CENTRAL BUTTE COUNTIES EXPIRES AT 245 PM PDT... THIS STORM HAS WEAKENED BUT IS STILL CAPABLE OF PRODUCING SMALL HAIL AND TORRENTIAL RAINS AS IT MOVES THROUGH NORTHWESTERN BUTTE COUNTY NEAR CHICO THROUGH 330 PM. ADDITIONAL STRONG STORMS WERE DEVELOPING OVER SOUTHWESTERN BUTTE COUNTY WEST OF GRIDLEY. THESE STORMS MAY ALSO PRODUCE SMALL HAIL AND HEAVY RAIN. LAT...LON 3967 12206 3967 12184 3977 12186 3973 12206 $$ JJ
The office that day
Everything else NWS Sacramento, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 8, 1:15 PM PDT | Tornado Warning | STO | Butte, Glenn | 30 min |
| Apr 8, 1:44 PM PDT | Tornado Warning | STO | Butte, Glenn | 31 min |
| Apr 8, 2:40 PM PDT | Severe Thunderstorm Warning | STO | Sutter, Yuba | 35 min |
| Apr 8, 2:59 PM PDT | Tornado Warning | STO | Sacramento, Yolo | 31 min |
| Apr 8, 3:25 PM PDT | Severe Thunderstorm Warning | STO | Butte | 50 min |
| Apr 8, 3:29 PM PDT | Tornado Warning | STO | Sacramento | 37 min |
| Apr 8, 3:40 PM PDT | Tornado Warning | STO | Butte | 38 min |
| Apr 8, 3:51 PM PDT | Severe Thunderstorm Warning | STO | San Joaquin | 39 min |
| Apr 8, 3:56 PM PDT | Tornado Warning | STO | San Joaquin | 34 min |
| Apr 8, 4:55 PM PDT | Severe Thunderstorm Warning | STO | El Dorado, Sacramento | 35 min |
Nearby
Severe Thunderstorm Warnings in California, 2005Every severe thunderstorm warning in 2005
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.