Alert archive / California / Severe Thunderstorm Warnings in 2005

Severe Thunderstorm Warning 55, NWS Sacramento, CA

December 28, 2005Shasta County, Tehama County, California

NWS Sacramento, CA issued this severe thunderstorm warning at Dec 28, 2005, 1:15 PM PST for Shasta County, Tehama County, California. It was in force for 45 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: Dec 28, 2005, 1:15 PM PST (21:15 UTC)
Expired: Dec 28, 2005, 2:00 PM PST
In force: 45 min
Issued by: NWS Sacramento, CA
Area: Counties, with a storm outline in the text

Counties Shasta County, CA, Tehama County, CA

The radar

The Beale AFB radar (KBBX), 114 km from the middle of the area, began a volume at 21:17 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

Medford/Jackson, OR (KMFR), launched 12:00Z, 9.3 hours before the alert went out and 221 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: 1028 m above ground
0-6 km bulk shear: 80 kt
0-1 km storm-relative helicity: 27 m²/s²
0-3 km storm-relative helicity: 329 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 Dec 28, 9:00 AM PST, 4 hours 15 minutes earlier.

Area forecast discussion, Dec 28, 9:00 AM PST, 4 hours 15 minutes before

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Hazardous weather outlook, Dec 28, 8:00 AM PST, 5 hours 15 minutes before

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</head>
<body>
  <main class="wrap">
    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
      </p>
      <p id="message2">
        Please try again in a few minutes.
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        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
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The office that day

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

Issued	Product	Office	Counties	Lasted
Dec 28, 6:24 AM PST	Winter Weather Advisory	STO		85 min
Dec 28, 7:47 AM PST	Winter Storm Warning	STO		31 hr
Dec 28, 2:03 PM PST	Severe Thunderstorm Warning	STO	Shasta, Tehama	42 min
Dec 28, 3:02 PM PST	Winter Storm Watch	STO		24 hr

Nearby

Severe Thunderstorm Warnings in California, 2005 Every 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.