Alert archive / Louisiana / Severe Thunderstorm Warnings in 1996

Severe Thunderstorm Warning 322, NWS Shreveport, LA

July 9, 1996De Soto Parish, Louisiana

NWS Shreveport, LA issued this severe thunderstorm warning at Jul 9, 1996, 4:39 PM CDT for De Soto Parish, Louisiana. It was in force for 66 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 9, 1996, 4:39 PM CDT (21:39 UTC)
Expired
Jul 9, 1996, 5:45 PM CDT
In force
66 min
Issued by
NWS Shreveport, LA
Area
Whole counties

County De Soto Parish, LA

The radar

The Shreveport radar (KSHV), 45 km from the middle of the area, began a volume at 21:43 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, 9.7 hours before the alert went out and 47 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-pSkew-T log-p diagram, Shreveport, LA at 12:00Z on 1996-07-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2481 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Shreveport, LA at 12:00Z on 1996-07-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -65 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
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
2481 J/kg
Mixed-layer CIN
-36 J/kg
Mixed-layer LCL
789 m above ground
0-6 km bulk shear
8 kt
0-1 km storm-relative helicity
-65 m²/s²
0-3 km storm-relative helicity
-52 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 Jul 9, 3:42 PM CDT, 57 minutes earlier.

Area forecast discussion, Jul 9, 3:42 PM CDT, 57 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SHREVEPORT LA
330 PM CDT TUE JUL 9 1996

TSTMS FORMED RAPIDLY THIS AFTN IN VRY MOIST AND UNSTABLE AIR AS SHORT
WAVE RODE UP WK FNTL BNDRY. ACTIVITY WILL SHIFT SLOWLY EAST TONIGHT.
CHC FOR TSTMS APPEAR TO CONT THROUGH THE WEEK ACCORDING TO ETA/AVN.
NGM KEEPS ACTIVITY FURTHER NORTH...BUT INITIALIZED BNDRY TOO FAR NORTH.
ANOTHER VORT TO MV INTO NE TX WED MORNING WITH UNUSUAL MSTR FEED FROM
WESTERN OK. AIR CONT TO BE UNSTABLE AS UPR FLOW VEERS TO WNW IN RESPONSE
TO UPR HIGH IN NORTH GULF MOVING WEST INTO SOUTH TX COAST. ENERGY LATER
IN PERIOD TO SPIN OFF SW TX VORT LOBE. CROSS SECTIONS REVEAL MODERATE
VERTICAL MOTIONS THRU PERIOD AND CONT ON AVN THRU 72 HOURS. BEST MSTR
AND ENERGY MAINLY TO NORTH AND WEST OF CWA SO WILL LEAVE CHC CAT.
A SLGHT COOLDOWN ON DAYTIME HIGHS WITH MODIFIED CAN AIR AND INCREASED
CLD CVR. WILL GO CLOSE TO NGM TEMPS EVEN THOUGH THEY ARE SHOWING A
WARM BIAS IN COMP TO OTHER MODELS.

SHV 72/89/70/91  6523       MLU 74/87/70/92  5623
VII

In the hours before

Local storm report, Jul 9, 11:12 AM CDT, 5 hours 27 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Jul 8, 9:06 PM CDTSevere Thunderstorm WarningSHVBossier54 min
Jul 8, 9:22 PM CDTSevere Thunderstorm WarningSHVWebster38 min
Jul 8, 9:54 PM CDTSevere Thunderstorm WarningSHVClaiborne51 min
Jul 9, 2:48 PM CDTSevere Thunderstorm WarningSHVWebster42 min
Jul 9, 5:35 PM CDTFlash Flood WarningSHVJackson, Lincoln, Ouachita, Union115 min
Jul 8, 7:06 PM CDTSevere Thunderstorm WarningSHVMarion39 min
Jul 9, 3:01 PM CDTSevere Thunderstorm WarningSHVSan Augustine44 min
Jul 9, 4:17 PM CDTSevere Thunderstorm WarningSHVPanola58 min
Jul 9, 5:31 PM CDTSevere Thunderstorm WarningSHVSmith59 min
Jul 9, 2:01 PM CDTSevere Thunderstorm WarningSHVMiller29 min

Nearby

Severe Thunderstorm Warnings in Louisiana, 1996Every severe thunderstorm warning in 1996

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.