Alert archive / Louisiana / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 17, NWS Shreveport, LA

January 23, 1997De Soto Parish, Louisiana

NWS Shreveport, LA issued this severe thunderstorm warning at Jan 23, 1997, 7:28 PM CST for De Soto Parish, Louisiana. It was in force for 32 min. 2 reports 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: Jan 23, 1997, 7:28 PM CST (01:28 UTC)
Expired: Jan 23, 1997, 8:00 PM CST
In force: 32 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 01:31 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
Jan 23, 8:00 PM CST	Hail 0.88	Carmel, LA
Jan 23, 8:00 PM CST	Thunderstorm Wind 60	Gloster, LA

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
Jan 23, 7:15 PM CST	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Shreveport, LA (KSHV), launched 00:00Z, 1.5 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-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: 496 m above ground
0-6 km bulk shear: 48 kt
0-1 km storm-relative helicity: 307 m²/s²
0-3 km storm-relative helicity: 470 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.3

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 Jan 23, 3:00 PM CST, 4 hours 28 minutes earlier.

Area forecast discussion, Jan 23, 3:00 PM CST, 4 hours 28 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SHREVEPORT LA
300 PM CST THU JAN 23 1997

AREA RW/TSTMS ASSOC WITH NORTH MOVG WARM FNT WILL CONT ACRS NE TX/SW AR.
WIDELY SCT BUT PSBL MORE INTENSE TSTM ACTIVITY REDEVELOP MID AFTN INTO
EAST TX/CNTRL LA. CONVECTION EXPECTED TO CONT AS VERY UNSTABLE AIR
PROGGED ACRS THESE SOUTHERN AREAS TIL FROPA LATE TONIGHT. COOLING MID
LVL TEMPS...DRYING ALOFT...AND TT VALUES AOA 50 INDICATE A SVR THREAT...
MAINLY FOR HAIL. RAPID DRYING BEHIND FNT SHOULD YIELD A MOSTLY SUNNY
SKY BY FRI AFTN. ETA AND NGM GRIDDED DATA IN GOOD AGREEMENT BUT FAN
TEMPS RUNNING COOLER THAN FWC. WILL GO WITH WARMER FWC AS HIGH MOSTLY
PAC BASED ARMS AND POST FNTL WINDS WESTERLY BEHIND N-S ORIENTED FNT.

SHV 52/70/40/64  7100        MLU 53/71/44/61  8400

VII

The office that day

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

Issued	Product	Office	Counties	Lasted
Jan 23, 6:13 PM CST	Severe Thunderstorm Warning	SHV	Rusk	47 min
Jan 23, 6:29 PM CST	Severe Thunderstorm Warning	SHV	Nacogdoches	31 min
Jan 23, 6:55 PM CST	Severe Thunderstorm Warning	SHV	Nacogdoches, Rusk	35 min
Jan 23, 6:38 PM CST	Tornado Warning	SHV	De Soto, Sabine	37 min
Jan 23, 7:14 PM CST	Tornado Warning	SHV	De Soto, Red River	46 min
Jan 23, 7:57 PM CST	Severe Thunderstorm Warning	SHV	De Soto	48 min
Jan 23, 8:09 PM CST	Severe Thunderstorm Warning	SHV	Red River	51 min
Jan 23, 8:20 PM CST	Severe Thunderstorm Warning	SHV	Bienville	40 min
Jan 23, 9:00 PM CST	Severe Thunderstorm Warning	SHV	Jackson	60 min
Jan 23, 9:30 PM CST	Severe Thunderstorm Warning	SHV	Ouachita	30 min

Nearby

Severe Thunderstorm Warnings in Louisiana, 1997 Every severe thunderstorm warning in 1997

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.