Alert archive / California / Severe Thunderstorm Warnings in 2003

Severe Thunderstorm Warning 27, NWS Sacramento, CA

November 9, 2003Butte County, Yuba County, California

NWS Sacramento, CA issued this severe thunderstorm warning at Nov 9, 2003, 6:20 AM PST for Butte County, Yuba County, California. It was in force for 25 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Nov 9, 2003, 6:20 AM PST (14:20 UTC)
Expired: Nov 9, 2003, 6:45 AM PST
In force: 25 min
Issued by: NWS Sacramento, CA
Area: Counties, with a storm outline in the text

Counties Butte County, CA, Yuba County, CA

The nearest sounding before it

Oakland, CA (KOAK), launched 12:00Z, 2.3 hours before the alert went out and 203 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 456 J/kg
Mixed-layer CIN: -32 J/kg
Mixed-layer LCL: 726 m above ground
0-6 km bulk shear: 35 kt
0-1 km storm-relative helicity: 147 m²/s²
0-3 km storm-relative helicity: 182 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 1.8

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Sacramento, CA wrote its last area forecast discussion before this severe thunderstorm warning went out at Nov 9, 4:45 AM PST, 1 hour 35 minutes earlier.

Area forecast discussion, Nov 9, 4:45 AM PST, 1 hour 35 minutes before

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Hazardous weather outlook, Nov 8, 7:00 AM PST, 23 hours 20 minutes before

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The office that day

Everything else NWS Sacramento, CA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Nov 9, 12:39 PM PST	Tornado Warning	STO	Solano, Yolo	31 min
Nov 9, 1:11 PM PST	Severe Thunderstorm Warning	STO	Sacramento, Solano, Yolo	49 min
Nov 9, 1:21 PM PST	Severe Thunderstorm Warning	STO	Glenn	39 min
Nov 9, 1:50 PM PST	Severe Thunderstorm Warning	STO	Butte, Glenn, Tehama	55 min
Nov 9, 2:02 PM PST	Severe Thunderstorm Warning	STO	Sacramento, Yolo	43 min
Nov 9, 2:18 PM PST	Tornado Warning	STO	Glenn, Tehama	27 min
Nov 9, 2:42 PM PST	Severe Thunderstorm Warning	STO	Sacramento, San Joaquin	48 min
Nov 9, 2:48 PM PST	Severe Thunderstorm Warning	STO	Butte, Tehama	32 min

Nearby

Severe Thunderstorm Warnings in California, 2003 Every severe thunderstorm warning in 2003

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.