Alert archive / Texas / Severe Thunderstorm Warnings in 1999

Severe Thunderstorm Warning 229, NWS Shreveport, LA

May 4, 1999Harrison County, Texas

NWS Shreveport, LA issued this severe thunderstorm warning at May 4, 1999, 8:11 PM CDT for Harrison County, Texas. It was in force for 64 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: May 4, 1999, 8:11 PM CDT (01:11 UTC)
Expired: May 4, 1999, 9:15 PM CDT
In force: 64 min
Issued by: NWS Shreveport, LA
Area: Whole counties

County Harrison County, TX

The radar

The Shreveport radar (KSHV), 51 km from the middle of the area, began a volume at 01:14 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.

What was reported inside it

Time	Report	Where	Remark
May 4, 8:30 PM CDT	Thunderstorm Wind 70	Marshall, TX

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
May 4, 3:00 PM CDT	Tornado Watch	SPC	6 hr

The nearest sounding before it

Shreveport, LA (KSHV), launched 00:00Z, 1.2 hours before the alert went out and 59 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: 3185 J/kg
Mixed-layer CIN: -1 J/kg
Mixed-layer LCL: 558 m above ground
0-6 km bulk shear: 52 kt
0-1 km storm-relative helicity: 267 m²/s²
0-3 km storm-relative helicity: 270 m²/s²
Significant tornado parameter: 5.4
Supercell composite: 17.9

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 May 4, 8:10 PM CDT, 1 minute earlier.

Area forecast discussion, May 4, 8:10 PM CDT, 1 minute before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SHREVEPORT LA
810 PM CDT TUE MAY 4 1999

SEVERE WEATHER STILL GOING ON ACROSS THE REGION...CURRENT FORECAST
LOOKS TO BE ON TRACK.

IV

In the hours before

Local storm report, May 4, 3:46 PM CDT, 4 hours 25 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SHREVEPORT LA
346 PM CDT TUE MAY 04 1999

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

0215 PM    5 SE TALCO                TX   TORNADO
05/04/99   TITUS                          REPORTED BY LAW
                                          ENFORCEMENT

0215 PM    6 SE TALCO                TX   TORNADO
05/04/99   TITUS                          *** 1 DEAD ***
                                          TORNADO NEAR BRIDGE CHAPEL
                                          CAUSED DAMAGE. REPORTED BY
                                          S.O.

0300 PM    DE KALB                   TX   TORNADO
05/04/99   BOWIE                          DAMAGE AND INJURIES AND A
                                          CONFIRMED SIGHTING OF
                                          TORNADO REPORTED BY STATE
                                          TROOPER JUST NORTH OF
                                          DE KALB.
03

Local storm report, May 4, 6:30 PM CDT, 1 hour 41 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SHREVEPORT LA
630 PM CDT TUE MAY 04 1999

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

0420 PM    NASHVILLE                 AR   .75 INCH HAIL
05/04/99   HOWARD                         REPORTED BY BROADCAST
                                          MEDIA.

0420 PM    2 N FOUKE                 AR   .75 INCH HAIL
05/04/99   MILLER                         REPORTED BY SPOTTER.

0420 PM    HALLSVILLE                TX   60 MPH TSTM GUST
05/04/99   HARRISON                       TREES DOWN ACROSS WEST
                                          SIDE OF COUNTY. REPORTED
                                          BY LAW ENFORCEMENT. NWS
                                          TORNADO SURVEY PENDING.

0420 PM    MARSHALL                  TX   80 MPH TSTM GUST
05/04/99   HARRISON                       1 HOUSE WITH ROOF BLOWN
                                          OFF ON WEST SIDE OF TOWN.
                                          REPORTED BY LAW
                                          ENFORCEMENT. NWS TORNADO
                                          SURVEY PENDING.

0435 PMN    10 E TEXARKANA            AR   .75 INCH HAIL
05/04/99   MILLER                         REPORTED BY GENERAL
                                          PUBLIC.

20

Local storm report, May 4, 7:08 PM CDT, 1 hour 3 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SHREVEPORT LA
708 PM CDT TUE MAY 04 1999

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

1243 PM    2 E BLAKENEY              TX   TORNADO
05/04/99   RED RIVER                      REPORTED BY LAW
                                          ENFORCEMENT ON HWY 37 NEAR
                                          THE RED RIVER.  5-6 HOUSES
                                          WERE DAMAGED. NWS TORNADO
                                          SURVEY PENDING.

1250 PM    5 W IDABEL                OK   TORNADO
05/04/99   MCCURTAIN                      REPORTED AT SHARPS LANDING
                                          BY LAW ENFORCEMENT. 1
                                          MOBILE HOME DESTROYED NWS
                                          TORNADO SURVEY PENDING.

0225 PM    6 N COOKVILLE             TX   TORNADO
05/04/99   TITUS                          1 HOUSE DAMAGED NEAR SUGAR
                                          HILL AT INTERSECTION OF
                                          NE35 AND NE31. REPORTED BY
                                          SPOTTER. NWS TORNADO SURVEY
                                          PENDING.

20

Local storm report, May 4, 7:53 PM CDT, 18 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SHREVEPORT LA
753 PM CDT TUE MAY 04 1999

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

0300 PM    DE KALB                   TX   TORNADO
05/04/99   BOWIE                          HIGH SCHOOL ROOF
                                          COLLAPSED. REPORTED BY
                                          EMERGENCY MANAGER. NWS
                                          TORNADO SURVEY PENDING.

0320 PM    KILGORE                   TX   TORNADO
05/04/99   GREGG                          HOME WITH ROOF BLOWN OFF
                                          AND POWER LINES DOWN.
                                          REPORTED BY SPOTTER. NWS
                                          TORNADO SURVEY PENDING.

0347 PM    2 N HALLSVILLE            TX   TORNADO
05/04/99   HARRISON                       UNCONFIRMED TORNADO ON
                                          GROUND REPORTED BY NWS
                                          EMPLOYEE. NWS TORNADO
                                          SURVEY PENDING.

0510 PM    1 SE OIL CITY             LA   TORNADO
05/04/99   CADDO                          UNCONFIRMED TORNADO ON
                                          GROUND REPORTED BY SPOTTER.
                                          NWS TORNADO SURVEY PENDING.

0510 PM    HOSSTON                   LA   .75 INCH HAIL
05/04/99   CADDO                          REPORTED BY SPOTTER.

0540 PM    2 W PLAIN DEALING         LA   TORNADO
05/04/99   BOSSIER                        ROOFS OFF HOMES. NUMEROUS
                                          TREES DOWN. POWER LINES
                                          DOWN. REPORTED BY SPOTTERS
                                          NEAR HWY 2. NWS TORNADO
                                          SURVEY PENDING.

20

The office that day

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

Issued	Product	Office	Counties	Lasted
May 4, 7:08 PM CDT	Severe Thunderstorm Warning	SHV	Harrison, Marion	47 min
May 4, 7:21 PM CDT	Tornado Warning	SHV	Cherokee	64 min
May 4, 7:35 PM CDT	Severe Thunderstorm Warning	SHV	Smith	65 min
May 4, 7:52 PM CDT	Severe Thunderstorm Warning	SHV	Gregg	48 min
May 4, 8:28 PM CDT	Tornado Warning	SHV	Nacogdoches	62 min
May 4, 9:21 PM CDT	Severe Thunderstorm Warning	SHV	Shelby	59 min
May 5, 2:15 PM CDT	Severe Thunderstorm Warning	SHV	Harrison, Panola	35 min
May 5, 2:17 PM CDT	Severe Thunderstorm Warning	SHV	Nacogdoches	33 min
May 5, 2:50 PM CDT	Severe Thunderstorm Warning	SHV	Panola, Shelby	50 min
May 5, 3:40 PM CDT	Severe Thunderstorm Warning	SHV	Shelby	50 min
May 4, 7:49 PM CDT	Severe Thunderstorm Warning	SHV	Caddo	31 min
May 4, 9:13 PM CDT	Severe Thunderstorm Warning	SHV	Webster	47 min
May 4, 10:15 PM CDT	Severe Thunderstorm Warning	SHV	Bienville	65 min
May 4, 10:30 PM CDT	Tornado Warning	SHV	Bienville	50 min
May 4, 10:38 PM CDT	Tornado Warning	SHV	Lincoln	62 min
May 4, 11:51 PM CDT	Severe Thunderstorm Warning	SHV	Ouachita	49 min
May 5, 4:14 AM CDT	Tornado Warning	SHV	Claiborne	61 min
May 5, 6:29 AM CDT	Severe Thunderstorm Warning	SHV	Union	56 min
May 5, 6:41 AM CDT	Tornado Warning	SHV	Union	49 min
May 5, 2:15 PM CDT	Severe Thunderstorm Warning	SHV	Bossier	35 min
May 5, 2:50 PM CDT	Severe Thunderstorm Warning	SHV	Bossier, Caddo	50 min
May 5, 3:28 PM CDT	Severe Thunderstorm Warning	SHV	Webster	47 min
May 5, 3:40 PM CDT	Severe Thunderstorm Warning	SHV	Bossier, Caddo	50 min
May 5, 4:18 PM CDT	Severe Thunderstorm Warning	SHV	Claiborne	47 min
May 5, 4:38 PM CDT	Severe Thunderstorm Warning	SHV	Bienville, Webster	47 min
May 5, 5:32 PM CDT	Severe Thunderstorm Warning	SHV	Caldwell, Winn	48 min
May 5, 6:37 PM CDT	Severe Thunderstorm Warning	SHV	Ouachita	48 min
May 4, 7:15 PM CDT	Tornado Warning	SHV	Union	30 min
May 5, 7:07 AM CDT	Tornado Warning	SHV	Union	63 min
May 5, 1:06 PM CDT	Severe Thunderstorm Warning	SHV	Union	19 min
May 5, 2:35 PM CDT	Severe Thunderstorm Warning	SHV	Columbia	35 min
May 5, 2:47 PM CDT	Severe Thunderstorm Warning	SHV	Union	33 min
May 5, 2:57 PM CDT	Severe Thunderstorm Warning	SHV	Columbia	48 min
May 5, 4:42 PM CDT	Severe Thunderstorm Warning	SHV	Union	48 min

Nearby

Severe Thunderstorm Warnings in Texas, 1999 Every severe thunderstorm warning in 1999

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.