Alert archive / Louisiana / Flash Flood Warnings in 1996

Flash Flood Warning 47, NWS Shreveport, LA

October 21, 1996Bossier Parish, Caddo Parish, Webster Parish, Louisiana

NWS Shreveport, LA issued this flash flood warning at Oct 21, 1996, 11:14 PM CDT for Bossier Parish, Caddo Parish, Webster Parish, Louisiana. It was in force for 4 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Oct 21, 1996, 11:14 PM CDT (04:14 UTC)
Expired: Oct 22, 1996, 3:15 AM CDT
In force: 4 hr
Issued by: NWS Shreveport, LA
Area: Whole counties

Counties Bossier Parish, LA, Caddo Parish, LA, Webster Parish, LA

The radar

The Shreveport radar (KSHV), 32 km from the middle of the area, began a volume at 04:14 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 00:00Z, 4.2 hours before the alert went out and 24 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: 1679 J/kg
Mixed-layer CIN: -15 J/kg
Mixed-layer LCL: 1009 m above ground
0-6 km bulk shear: 52 kt
0-1 km storm-relative helicity: 196 m²/s²
0-3 km storm-relative helicity: 236 m²/s²
Significant tornado parameter: 2.5
Supercell composite: 10.0

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 flash flood 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 flash flood warning went out at Oct 21, 8:15 PM CDT, 2 hours 59 minutes earlier.

Area forecast discussion, Oct 21, 8:15 PM CDT, 2 hours 59 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SHREVEPORT LA
815 PM CDT MON OCT 21 1996

NUMEROUS STG AND SVR TSTMS CONT TO TRAIN ACROSS NE TX...SW AR AND
EXTREME NW LA. SVRL RPTS OF HAIL RECIEVED ALONG WITH RECENT RPTS OF
WND DAMAGE. MESOS AND BOW ECHOES COMMON ON RADAR TONIGHT. 00Z SOUNDING
AT SHV SUPPORTS THIS TYPE OF WX WITH HELICITY AT 200 AND LI -8 WITH
K-INDEX OF 42. WK CAP OF 1.5 DEGREE ERASED WITH GUST FRONT LIFT AS
STORMS APPROACH. IR IMAGERY SHOWS A CONT COOLING TREND OF CLD TOPS.
RUC DATA INDICATES LINE TSTMS SHOULD HOLD TOGETHER WELL AT LEAST THRU
4 AM...WHEN THEY WILL SLICE THRU SE TX/CNTRL LA. DO NOT EXPECT ANY
STORMS TO DEVELOP AHEAD OF LINE GIVEN CURRENT TRENDS AND INCREASjING
CAPPING TO THE EAST. COLD AIR SLOW TO ARRIVE...DO NOT EXPECT ANY
SIGNIFICANT COOLING OVERNIGHT EXCEPT FOR EXTREME NW CWA.

VII

In the hours before

Local storm report, Oct 21, 5:40 PM CDT, 5 hours 34 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SHREVEPORT LA
540 PM CDT MON OCT 21 1996

TIME(CDT)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0205 PM    NEW BOSTON                TX   1.00 INCH HAIL
10/21/96   BOWIE

0230 PM    NASH                      TX   0.50 INCH HAIL
10/21/96   BOWIE

0231 PM    4 E EMORY                 TX   0.75 INCH HAIL
10/21/96   WOOD

0250 PM    MANDEVILLE                AR   0.50 INCH HAIL
10/21/96   MILLER
.
0255 PM    1 S NEWSOME               TX   0.75 INCH HAIL
10/21/96   CAMP

0300 PM    LEESBURG                  TX   0.75 INCH HAIL
10/21/96   CAMP

0310 PM    HAWKINS                   TX   1.00 INCH HAIL
10/21/96   WOOD

0325 PM    3 W HOPE                  AR   0.50 INCH HAIL
10/21/96   HEMPSTEAD

0338 PM    DANGERFIELD               TX   0.75 INCH HAIL
10/21/96   MORRIS

0340 PM    DANGERFIELD               TX   60 MPH TSTM GUST
10/21/96   MORRIS

0415 PM    LINDEN                    TX   0.75 INCH HAIL
10/21/96   CASS

0415 PM    LINDEN                    TX   60 MPH TSTM GUST
10/21/96   CASS
.
0425 PM    5 NE LINDEN               TX   1.75 INCH HAIL
10/21/96   CASS

0430 PM    ATLANTA                   TX   70 MPH TSTM GUST
10/21/96   CASS                           STRAIGHT LINE WINDS PRODUCED
                                          NUMEROUS REPORTS OF DAMAGE IN
                                          THE CITY INCLUDING DOWNED
                                          TREES AND POWER LINES.

0436 PM    QUEEN CITY                TX   1.75 INCH HAIL
10/21/96   CASS

0525 PM    RODESSA                   LA   0.50 INCH HAIL
10/21/96   CADDO

13

Local storm report, Oct 21, 7:14 PM CDT, 4 hours before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SHREVEPORT LA
713 PM CDT MON OCT 21 1996

TIME(CDT)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0410 PM    ROSSTON                   AR   0.75 INCH HAIL
10/21/96   NEVADA

0542 PM    2 N CANFIELD              AR   WIND DAMAGE
10/21/96   LAFAYETTE                      TREES AND POWER LINES
                                          DOWN ALONG HWY 29

0545 PM    BRADLEY                   AR   1.00 INCH HAIL
10/21/96   LAFAYETTE

0554 PM    HARLETON                  TX   0.75 INCH HAIL
10/21/96   HARRISON
.
0559 PM    2 E JEFFERSON             TX   1.75 INCH HAIL
10/21/96   MARION                         HAIL REPORTED JUST NORTH
                                          OF CADDO LAKE.

0615 PM    MAGNOLIA                  AR   1.00 INCH HAIL
10/21/96   COLUMBIA

0635 PM    LINDALE                   TX   1.50 INCH HAIL
10/21/96   SMITH

0635 PM    TYLER                     TX   73 MPH TSTM GUST
10/21/96   SMITH                          NUMEROUS TREES DOWN ACROSS
                                          HWY 69 AND IN THE CITY.

0706 PM    GLADEWATER                TX   60` MPH TSTM GUST
10/21/96   GREGG

0707 PM    LIBERTY CITY              TX   0.50 INCH HAIL
10/21/96   GREGG

13

Local storm report, Oct 21, 9:22 PM CDT, 1 hour 52 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SHREVEPORT LA
920 PM CDT MON OCT 21 1996

TIME(CDT)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0705 PM    MT. HOLLY                 AR   0.50 INCH HAIL
10/21/96   UNION

0715 PM    5 W LONGVIEW              TX   0.75 INCH HAIL
10/21/96   GREGG

0716 PM    OVERTON                   TX   0.50 INCH HAIL
10/21/96   RUSK

0720 PM    SAREPTA                   LA   0.50 INCH HAIL
10/21/96   WEBSTER

0721 PM    LONGVIEW                  TX   65 MPH TSTM GUST
10/21/96   GREGG

0724 PM    3 W LONGVIEW              TX   0.88 INCH HAIL
10/21/96   GREGG

0730 PM    10 E GILMER               TX   WIND DAMAGE
10/21/96   UPSHUR                         TREES WERE DOWNED ACROSS
                                          FM 1650

0730 PM    12 N HENDERSON            TX   WIND DAMAGE
10/21/96   RUSK                           TREES WERE DOWNED ACROSS
                                          FM 782

0750 PM    1 W HALLSVILLE            TX   WIND DAMAGE
10/21/96   HARRISON                       SEVERAL TREES UPROOTED

0800 PM    MARSHALL                  TX   0.75 INCH HAIL
10/21/96   HARRISON

0836 PM    MOORINGSPORT              LA   1.00 INCH HAIL
10/21/96   CADDO

0840 PM    OIL CITY                  LA   0.88 INCH HAIL
10/21/96   CADDO

0854 PM    BENTON                    LA   61 MPH TSTM GUST
10/21/96   BOSSIER

13

Local storm report, Oct 21, 10:25 PM CDT, 49 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SHREVEPORT LA
1025 PM CDT MON OCT 21 1996

TIME(CDT)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0920 PM    2 S COTTON VALLEY         LA   WIND DAMAGE
10/21/96   WEBSTER                        TREES DOWN ALONG HIGHWAY
                                          7

0945 PM    5 S MINDEN                LA   1.75 INCH HAIL
10/21/96   WEBSTER

SIX

Special weather statement, Oct 21, 10:55 PM CDT, 19 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Oct 21, 8:22 PM CDT	Severe Thunderstorm Warning	SHV	Caddo	53 min
Oct 21, 8:41 PM CDT	Severe Thunderstorm Warning	SHV	Bossier	64 min
Oct 21, 9:05 PM CDT	Severe Thunderstorm Warning	SHV	Webster	55 min
Oct 21, 9:15 PM CDT	Severe Thunderstorm Warning	SHV	Caddo	45 min
Oct 22, 12:45 AM CDT	Severe Thunderstorm Warning	SHV	De Soto	60 min
Oct 21, 7:02 PM CDT	Severe Thunderstorm Warning	SHV	Wood	43 min
Oct 21, 7:05 PM CDT	Severe Thunderstorm Warning	SHV	Gregg, Upshur	55 min
Oct 21, 7:24 PM CDT	Severe Thunderstorm Warning	SHV	Harrison	66 min
Oct 21, 7:27 PM CDT	Severe Thunderstorm Warning	SHV	Rusk	48 min
Oct 21, 7:33 PM CDT	Severe Thunderstorm Warning	SHV	Cherokee	27 min
Oct 21, 8:27 PM CDT	Severe Thunderstorm Warning	SHV	Harrison	33 min
Oct 21, 10:42 PM CDT	Flash Flood Warning	SHV	Cherokee, Harrison, Rusk	4 hr
Oct 22, 12:56 AM CDT	Severe Thunderstorm Warning	SHV	Shelby	64 min

Nearby

Flash Flood Warnings in Louisiana, 1996 Every flash flood 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.