Alert archive / Texas / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 325, NWS Shreveport, LA
NWS Shreveport, LA issued this severe thunderstorm warning at Aug 5, 1998, 3:30 PM CDT for Cass County, Texas. It was in force for 50 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
- Aug 5, 1998, 3:30 PM CDT (20:30 UTC)
- Expired
- Aug 5, 1998, 4:20 PM CDT
- In force
- 50 min
- Issued by
- NWS Shreveport, LA
- Area
- Whole counties
County Cass County, TX
The radar
The Shreveport radar (KSHV), 84 km from the middle of the area, began a volume at 20:33 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
Shreveport, LA (KSHV), launched 12:00Z, 8.5 hours before the alert went out and 87 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.
- Mixed-layer CAPE
- 304 J/kg
- Mixed-layer CIN
- -124 J/kg
- Mixed-layer LCL
- 1280 m above ground
- 0-6 km bulk shear
- 12 kt
- 0-1 km storm-relative helicity
- 41 m²/s²
- 0-3 km storm-relative helicity
- 24 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 5, 2:30 PM CDT, 1 hour earlier.
Area forecast discussion, Aug 5, 2:30 PM CDT, 1 hour before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE SHREVEPORT LA 230 PM CDT WED AUG 5 1998 UPPER TROF OVER UPPER MISSISSIPPI RIVER VALLEY PROGGED TO SHARPEN THRU THE PERIOD. THIS WILL ENABLE FRONTAL BOUNDARY ACROSS NW AR/SE OK TO AROUND FTW TO LOCK INTO PLACE...AS WELL AS PROVIDE ADDITIONAL ENERGY TO AREA AS 30-40 KT NORTHERLY WINDS FILTER DOWN BACKSIDE OF TROF. ALTHOUGH MAIN BOUNDARY TO NORTH AND WEST OF AREA...NORTHERLY FLOW ALOFT SHOULD STEER OUTFLOW BOUNDARIES TOWARDS AREA...ADDING TO LEFTOVER BOUNDARIES FROM ONGOING CONVECTION. ETA SHOWS LIFT THIS AFTERNOON ENDING THIS EVENING...BUT DEEPER LIFT THU AFTERNOON REMAIN ONGOING THRU THE NIGHT. FAN/FWC BOTH RUNNING 30-50% POPS 2ND-4TH PERIOD WITH LOWERING DAYTIME TEMPS...GOOD SIGN FOR RELIEF FROM HOT AND DRY. FWC TEMPS BETTER WHILE FAN POPS MAY BE CLOSER. SHV 73/92/73/90 2434 MLU 72/91/72/89 1323 07
In the hours before
Special weather statement, Aug 5, 10:05 AM CDT, 5 hours 25 minutes before
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</html>Special weather statement, Aug 5, 10:05 AM CDT, 5 hours 25 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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</html>The office that day
Everything else NWS Shreveport, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 5, 3:44 PM CDT | Severe Thunderstorm Warning | SHV | Smith | 51 min |
| Aug 5, 4:25 PM CDT | Severe Thunderstorm Warning | SHV | Cass | 35 min |
| Aug 5, 4:54 PM CDT | Severe Thunderstorm Warning | SHV | Panola | 51 min |
| Aug 5, 4:38 PM CDT | Severe Thunderstorm Warning | SHV | Caddo | 47 min |
| Aug 5, 4:45 PM CDT | Severe Thunderstorm Warning | SHV | Bossier | 50 min |
| Aug 5, 4:50 PM CDT | Severe Thunderstorm Warning | SHV | Webster | 50 min |
| Aug 5, 5:28 PM CDT | Severe Thunderstorm Warning | SHV | Caddo | 47 min |
| Aug 5, 5:34 PM CDT | Severe Thunderstorm Warning | SHV | De Soto | 66 min |
Nearby
Severe Thunderstorm Warnings in Texas, 1998Every 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.