Alert archive / Texas / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 262, NWS Shreveport, LA

June 17, 1997Harrison County, Marion County, Texas

NWS Shreveport, LA issued this severe thunderstorm warning at Jun 17, 1997, 2:57 AM CDT for Harrison County, Marion County, Texas. It was in force for 63 min. 4 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: Jun 17, 1997, 2:57 AM CDT (07:57 UTC)
Expired: Jun 17, 1997, 4:00 AM CDT
In force: 63 min
Issued by: NWS Shreveport, LA
Area: Whole counties

Counties Harrison County, TX, Marion County, TX

The radar

The Shreveport radar (KSHV), 55 km from the middle of the area, began a volume at 08:00 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
Jun 17, 3:10 AM CDT	Thunderstorm Wind 60	Harleton, TX	Numerous trees were blown down across FM 1968.
Jun 17, 3:10 AM CDT	Thunderstorm Wind 70	Jefferson, TX	Several large trees were toppled across FM 726 at the southern end of Lake O' Pines.
Jun 17, 3:20 AM CDT	Thunderstorm Wind 60	Hallsville, TX	Numerous trees and power lines were toppled leading to widespread power outages.
Jun 17, 3:25 AM CDT	Thunderstorm Wind 60	Jefferson, TX	Several large trees were blown down across Hwy 729.

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
Jun 16, 11:30 PM CDT	Tornado Watch	SPC	7 hr

The nearest sounding before it

Shreveport, LA (KSHV), launched 00:00Z, 8.0 hours before the alert went out and 61 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: 2912 J/kg
Mixed-layer CIN: -10 J/kg
Mixed-layer LCL: 1044 m above ground
0-6 km bulk shear: 23 kt
0-1 km storm-relative helicity: 35 m²/s²
0-3 km storm-relative helicity: 66 m²/s²
Significant tornado parameter: 0.7
Supercell composite: 5.4

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

685 
WUUS1 KSHV 170803
SVRSHV
TXC203-315-170900-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SHREVEPORT LA...CORRECTED EXPECTED WIND GUSTS.
257 AM CDT TUE JUN 17 1997

THE NATIONAL WEATHER SERVICE IN SHREVEPORT HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  400 AM CDT
FOR THE FOLLOWING AREAS...

IN NORTHEAST TEXAS

   ...HARRISON COUNTY...MARION COUNTY

AT 255 AM CDT...DOPPLER RADAR IN SHREVEPORT DETECTED A LINE OF SEVERE
THUNDERSTORMS EXTENDING FROM LAKE O THE PINES TO JUST WEST OF LONGVIEW.
THESE STORMS WERE MOVING TO THE EAST AT 30 MPH. DAMAGING WINDS IN EXCESS
OF 60 MPH AND LARGE HAIL ARE LIKELY WITH THESE STORMS.

A TORNADO WATCH IS ALSO IN EFFECT FOR THE WARNED AREA.  REMEMBER
SEVERE THUNDERSTORMS CAN AND SOMETIMES DO PRODUCE TORNADOES
WITH LITTLE OR NO ADVANCE WARNING.

4/18

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 Jun 17, 1:50 AM CDT, 1 hour 7 minutes earlier.

Area forecast discussion, Jun 17, 1:50 AM CDT, 1 hour 7 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SHREVEPORT LA
150 AM CDT TUE JUN 17 1997

MODELS SIMILIAR IN MOVING UPPER LOW FROM WEST TX TO SOUTHERN MISSOURI
BY TONIGHT AS UPPER TROF DEVELOPS OVER EASTERN U.S. ON WED AND RIDGE
DEVELOPS OVER CENTRAL U.S. COLD FRONT CURRENTLY FROM NORTHWEST AR INTO
NORTH CENTRAL TEXAS WITH A COUPLE OF SQUALL LINES AHEAD OF IT WILL MOVE
SLOWLY EAST AND SOUTHEAST DURING THE PERIOD PROBABLY BECOMING STATIONARY
FROM NEAR AEX TO LFK BY 19/00Z...AND IF NGM IS CORRECT NOT THAT FAR.
WITH NORTHWEST FLOW SETTING UP ON WED. WILL LEAVE IN SOME POPS FOR
WED AS A WEAK SYSTEM IS MOVING SOUTH IN THE FLOW AND BOUNDARY WILL BE
HANGING AROUND AT LEAST OVER THE SOUTHERN SECTIONS. WILL NEED SEVERE IN
TODAY AS 50 KNOTS PROGGED AT 500MB ACROSS NORTHEAST TX INTO NORTHWEST
LA AS VORT MAX MOVES ACROSS...WITH CAPES OF 1000 TO 2000 J/KM AND LIS
OF -5 WHICH MAY BE UNDER DONE.

SHV 88/73/89  532   MLU  89/74/90  542

IV

In the hours before

Local storm report, Jun 17, 12:44 AM CDT, 2 hours 13 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE OFFICE SHREVEPORT LA
1244 AM CDT THU JUN 17 1997

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

1115 PM    10 W SAN AUGUSTINE        TX   1.75 INCH HAIL
06/16/97   SAN AUGUSTINE

18

Local storm report, Jun 17, 12:45 AM CDT, 2 hours 12 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE OFFICE SHREVEPORT LA
1244 AM CDT THU JUN 17 1997

TIME(CDT)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....COUNTY LOCATION....
6
1115 PM    10 W SAN AUGUSTINE        TX   1.75 INCH HAIL
06/16/97   SAN AUGUSTINE

18

Local storm report, Jun 17, 1:19 AM CDT, 1 hour 38 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE OFFICE SHREVEPORT LA
119 AM CDT TUE JUN 17 1997

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

0104 AM    3 W QUITMAN               TX   70 MPH TSTM GUST
06/17/97   WOOD

ELEVEN

Local storm report, Jun 17, 1:22 AM CDT, 1 hour 35 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE OFFICE SHREVEPORT LA
119 AM CDT TUE JUN 17 1997

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

0104 AM    3 W QUITMAN               TX   70 MPH TSTM GUST
06/17/97   WOOD

ELEVEN

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 16, 10:12 PM CDT	Severe Thunderstorm Warning	SHV	Angelina, Nacogdoches	48 min
Jun 16, 11:09 PM CDT	Severe Thunderstorm Warning	SHV	San Augustine	66 min
Jun 17, 12:57 AM CDT	Severe Thunderstorm Warning	SHV	Wood	48 min
Jun 17, 1:20 AM CDT	Severe Thunderstorm Warning	SHV	Franklin	25 min
Jun 17, 1:35 AM CDT	Severe Thunderstorm Warning	SHV	Camp, Titus	40 min
Jun 17, 1:58 AM CDT	Severe Thunderstorm Warning	SHV	Smith, Wood	62 min
Jun 17, 2:07 AM CDT	Severe Thunderstorm Warning	SHV	Morris	53 min
Jun 17, 2:23 AM CDT	Severe Thunderstorm Warning	SHV	Upshur	67 min
Jun 17, 2:35 AM CDT	Flash Flood Warning	SHV	Camp, Morris, Titus, Wood	4 hr
Jun 17, 2:52 AM CDT	Severe Thunderstorm Warning	SHV	Gregg	53 min
Jun 17, 3:18 AM CDT	Severe Thunderstorm Warning	SHV	Cass	42 min
Jun 17, 6:37 AM CDT	Severe Thunderstorm Warning	SHV	Angelina	68 min

Nearby

Severe Thunderstorm Warnings in Texas, 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.