Alert archive / California / Severe Thunderstorm Warnings in 2013

Severe Thunderstorm Warning 10, NWS Sacramento, CA

July 3, 2013Shasta County, California

NWS Sacramento, CA issued this severe thunderstorm warning at Jul 3, 2013, 7:02 PM PDT for Shasta County, California. It was in force for 28 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: Jul 3, 2013, 7:02 PM PDT (02:02 UTC)
Expired: Jul 3, 2013, 7:30 PM PDT
In force: 28 min
Issued by: NWS Sacramento, CA
Area: Storm-based polygon

County Shasta County, CA

The nearest sounding before it

Reno, NV (KREV), launched 00:00Z, 2.0 hours before the alert went out and 352 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 3692 m above ground
0-6 km bulk shear: 15 kt
0-1 km storm-relative helicity: -40 m²/s²
0-3 km storm-relative helicity: -21 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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 Jul 3, 4:33 PM PDT, 2 hours 29 minutes earlier.

Area forecast discussion, Jul 3, 4:33 PM PDT, 2 hours 29 minutes before

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Hazardous weather outlook, Jul 3, 7:00 AM PDT, 12 hours 2 minutes before

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In the hours before

Special weather statement, Jul 3, 2:31 PM PDT, 4 hours 31 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
Jul 3, 5:00 PM PDT	Special Weather Statement	STO	Plumas	45 min
Jul 3, 6:54 PM PDT	Special Weather Statement	STO		36 min

Nearby

Severe Thunderstorm Warnings in California, 2013 Every severe thunderstorm warning in 2013

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.