Alert archive / Texas / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 341, NWS Shreveport, LA

August 10, 1998Panola County, Texas

NWS Shreveport, LA issued this severe thunderstorm warning at Aug 10, 1998, 6:46 PM CDT for Panola County, Texas. It was in force for 34 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: Aug 10, 1998, 6:46 PM CDT (23:46 UTC)
Expired: Aug 10, 1998, 7:20 PM CDT
In force: 34 min
Issued by: NWS Shreveport, LA
Area: Whole counties

County Panola County, TX

What was reported inside it

Time	Report	Where	Remark
Aug 10, 7:00 PM CDT	Thunderstorm Wind 52	Carthage, TX	Powerlines toppled along FM315.

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 nearest sounding before it

Shreveport, LA (KSHV), launched 12:00Z, 11.8 hours before the alert went out and 63 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: 951 J/kg
Mixed-layer CIN: -158 J/kg
Mixed-layer LCL: 1550 m above ground
0-6 km bulk shear: 10 kt
0-1 km storm-relative helicity: -13 m²/s²
0-3 km storm-relative helicity: 80 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 Aug 10, 3:32 PM CDT, 3 hours 14 minutes earlier.

Area forecast discussion, Aug 10, 3:32 PM CDT, 3 hours 14 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SHREVEPORT LA
330 PM CDT SAT AUG 8 1998

A WEAK COLD FRONT AND SEVERAL DISTURBANCES MOVE INTO AREA IN CONTINUED
NW FLOW ALOFT. SCATTERED TSTMS WILL BE INCLUDED AREAWIDE THROUGH PERIOD
DURING NIGHT AS WELL AS DAYTIME. BEST CONCENTRATION AREA WILL SHIFT FROM
NW PORTIONS OF AREA TO SE PORTIONS FROM TUE TO WED. MOISTURE WILL
INCREASE AND LOW LEVEL WIND SHEAR FAVORABLE FOR ORGANIZED DEVELOPMENT...
AT LEAST FOR THIS TIME OF YEAR. ETA MOVES SURFACE BOUNDARY THROUGH OK
THIS AFTERNOON TO TX/OK BORDER...THEN TO EAST CENTRAL TX BY TUESDAY
AFTERNOON. NGM AND AVN NOT AS AGRESSIVE WITH MOVEMENT...IMPLYING MORE
CONVECTION LATER IN THE WEEK. ETA FORECAST SOUNDING QUITE INTERESTING
FOR TUESDAY EVENING AS CAPES RISE DURING THE EVENING AND AND EAST
SURFACE WIND DEVELOPS...WITH K INDEX OF 40! AS FOR THIS EVENING...RUC
BRINGS A SHORT WAVE THROUGH EAST TX AND VISIBLE SATELLITE SHOWS A
SERIES OF WELL DEFINED OUTFLOW BOUNDARIES RIDING SOUTH FROM SW AR.
AND ARE ALREADY GETTING A COUPLE SEVERE STORMS IN NORTH LA!
KEEP HIGH TEMPS DOWN NEAR GUIDANCE WITH INCREASED CLOUDS.
SHV 75/93/74/92  3434              MLU 74/93/74/91  3445     07

In the hours before

Local storm report, Aug 10, 6:37 PM CDT, 9 minutes before

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Local storm report, Aug 10, 6:37 PM CDT, 9 minutes before

<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>Service Notice</title>
  <link rel="stylesheet" href="index.css">
</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.
      </p>
      <p class="small" id="detail">
        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 Shreveport, LA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Aug 10, 3:17 PM CDT	Severe Thunderstorm Warning	SHV	Bienville	33 min
Aug 10, 4:31 PM CDT	Severe Thunderstorm Warning	SHV	Sabine	49 min

Nearby

Severe Thunderstorm Warnings in Texas, 1998 Every severe thunderstorm warning in 1998

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.