Alert archive / Texas / Severe Thunderstorm Warnings in 1999

Severe Thunderstorm Warning 129, NWS Shreveport, LA

March 8, 1999Wood County, Texas

NWS Shreveport, LA issued this severe thunderstorm warning at Mar 8, 1999, 12:40 PM CST for Wood County, Texas. It was in force for 50 min. 1 report came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued: Mar 8, 1999, 12:40 PM CST (18:40 UTC)
Expired: Mar 8, 1999, 1:30 PM CST
In force: 50 min
Issued by: NWS Shreveport, LA
Area: Whole counties

County Wood County, TX

The radar

The Shreveport radar (KSHV), 149 km from the middle of the area, began a volume at 18:41 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.

What was reported inside it

Time	Report	Where	Remark
Mar 8, 1:10 PM CST	Thunderstorm Wind 60	Winnsboro, TX	Few trees and powerlines down.

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Mar 8, 12:00 PM CST	Tornado Watch	SPC	6 hr

The nearest sounding before it

Shreveport, LA (KSHV), launched 12:00Z, 6.7 hours before the alert went out and 157 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: 891 m above ground
0-6 km bulk shear: 53 kt
0-1 km storm-relative helicity: 627 m²/s²
0-3 km storm-relative helicity: 864 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

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 Shreveport, LA wrote its last area forecast discussion before this severe thunderstorm warning went out at Mar 8, 9:45 AM CST, 2 hours 55 minutes earlier.

Area forecast discussion, Mar 8, 9:45 AM CST, 2 hours 55 minutes before

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In the hours before

Special weather statement, Mar 8, 10:05 AM CST, 2 hours 35 minutes before

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Special weather statement, Mar 8, 10:05 AM CST, 2 hours 35 minutes before

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Special weather statement, Mar 8, 10:40 AM CST, 2 hours before

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Special weather statement, Mar 8, 10:40 AM CST, 2 hours before

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<html lang="en">
<head>
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<body>
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    <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.
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      <p id="message2">
        Please try again in a few minutes.
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The office that day

Everything else NWS Shreveport, LA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Mar 8, 12:47 PM CST	Severe Thunderstorm Warning	SHV	Cherokee	48 min
Mar 8, 1:03 PM CST	Severe Thunderstorm Warning	SHV	Smith	32 min
Mar 8, 1:21 PM CST	Severe Thunderstorm Warning	SHV	Nacogdoches, Rusk	59 min
Mar 8, 2:01 PM CST	Severe Thunderstorm Warning	SHV	Panola, Shelby	59 min
Mar 8, 3:54 PM CST	Severe Thunderstorm Warning	SHV	San Augustine	46 min
Mar 8, 5:38 PM CST	Severe Thunderstorm Warning	SHV	Ouachita	47 min

Nearby

Severe Thunderstorm Warnings in Texas, 1999 Every severe thunderstorm warning in 1999

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.