Alert archive / Louisiana / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 300, NWS Shreveport, LA

July 7, 1997LaSalle Parish, Louisiana

NWS Shreveport, LA issued this severe thunderstorm warning at Jul 7, 1997, 1:46 PM CDT for LaSalle Parish, Louisiana. It was in force for 44 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 7, 1997, 1:46 PM CDT (18:46 UTC)
Expired: Jul 7, 1997, 2:30 PM CDT
In force: 44 min
Issued by: NWS Shreveport, LA
Area: Whole counties

County LaSalle Parish, LA

The nearest sounding before it

Shreveport, LA (KSHV), launched 12:00Z, 6.8 hours before the alert went out and 174 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: 1132 J/kg
Mixed-layer CIN: -42 J/kg
Mixed-layer LCL: 550 m above ground
0-6 km bulk shear: 17 kt
0-1 km storm-relative helicity: 106 m²/s²
0-3 km storm-relative helicity: 111 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 7, 9:50 AM CDT, 3 hours 56 minutes earlier.

Area forecast discussion, Jul 7, 9:50 AM CDT, 3 hours 56 minutes before

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In the hours before

Local storm report, Jul 7, 9:15 AM CDT, 4 hours 31 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE OFFICE SHREVEPORT LA
915 AM CDT THU JUL 07 1997

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

1340 PM    10 N LUFKIN               TX   60 MPH TSTM GUST
07/06/97   LUFKIN

Local storm report, Jul 7, 9:18 AM CDT, 4 hours 28 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE OFFICE SHREVEPORT LA
915 AM CDT THU JUL 07 1997

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

1340 PM    10 N LUFKIN               TX   60 MPH TSTM GUST
07/06/97   LUFKIN

Special weather statement, Jul 7, 10:00 AM CDT, 3 hours 46 minutes before

ARZ050-051-059>061-070>073-LAZ001>006-010>014-017>022-OKZ077-TXZ096-
097-108>112-124>126-136>138-149>153-165>167-071600-

THUNDERSTORM OUTLOK EMENT
NATIONAL WEATHER SERVICE SHREVEPORT LA
1000 AM CDT MON JUL 7 1997

AN UPPER LEVEL SYSTEM OVER NORTHERN SECTIONS OF THE FOUR STATES
REGION THIS MORNING WILL MOVE SLOWLY SOUTHEAST AND INTO THE EASTERN
SECTIONS OF THE REGION BY LATE THIS AFTERNOON AND THEN EAST AREA
BY LATE TONIGHT.  ON THE SURFACE A WEAK STATIONARY FRONTAL SYSTEM
EXTENDED FROM NORTHEAST TEXAS THROUGH ARKANSAS AND INTO NORTHERN
MISSISSIPPI. WITH THE ATMPOSTHERE MOIST AND UNSTABLE OVER THE REION
AS WELL...SHOWERS AND THUNDERSTORMS WILL CONTINUE OVER THE REGION
TODAY AND INTO TONIGHT BUT END AS THE UPPER LEVEL SYSTEM MOVES
EAST AND OUT OF THE AREA.

THE SHOWERS AND THUNDERSTORMS WILL PRODUCE HEAVY RAINFALL AS THE
MAIN THREAT AND A FEW ISOLATED SEVERE THUNDERSTORMS ARE POSSIBLE...
HOWEVER STORM SPOTTER AND EMERGENCY MANAGEMENT OFFICALS ARE NOT
EXPECTED TO BE ACTIVATED THIS AFTERNOON OR EVENING.

SIX

Special weather statement, Jul 7, 10:03 AM CDT, 3 hours 43 minutes before

ARZ050-051-059>061-070>073-LAZ001>006-010>014-017>022-OKZ077-TXZ096-
097-108>112-124>126-136>138-149>153-165>167-071600-

THUNDERSTORM OUTLOK EMENT
NATIONAL WEATHER SERVICE SHREVEPORT LA
1000 AM CDT MON JUL 7 1997

AN UPPER LEVEL SYSTEM OVER NORTHERN SECTIONS OF THE FOUR STATES
REGION THIS MORNING WILL MOVE SLOWLY SOUTHEAST AND INTO THE EASTERN
SECTIONS OF THE REGION BY LATE THIS AFTERNOON AND THEN EAST AREA
BY LATE TONIGHT.  ON THE SURFACE A WEAK STATIONARY FRONTAL SYSTEM
EXTENDED FROM NORTHEAST TEXAS THROUGH ARKANSAS AND INTO NORTHERN
MISSISSIPPI. WITH THE ATMPOSTHERE MOIST AND UNSTABLE OVER THE REION
AS WELL...SHOWERS AND THUNDERSTORMS WILL CONTINUE OVER THE REGION
TODAY AND INTO TONIGHT BUT END AS THE UPPER LEVEL SYSTEM MOVES
EAST AND OUT OF THE AREA.

THE SHOWERS AND THUNDERSTORMS WILL PRODUCE HEAVY RAINFALL AS THE
MAIN THREAT AND A FEW ISOLATED SEVERE THUNDERSTORMS ARE POSSIBLE...
HOWEVER STORM SPOTTER AND EMERGENCY MANAGEMENT OFFICALS ARE NOT
EXPECTED TO BE ACTIVATED THIS AFTERNOON OR EVENING.

SIX

Local storm report, Jul 7, 11:54 AM CDT, 1 hour 52 minutes before

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Local storm report, Jul 7, 11:55 AM CDT, 1 hour 51 minutes before

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      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
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The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 7, 8:01 AM CDT	Flash Flood Warning	SHV	Harrison	4 hr
Jul 7, 9:12 AM CDT	Flash Flood Warning	SHV	Gregg	4 hr
Jul 7, 9:28 AM CDT	Flash Flood Warning	SHV	Smith	4 hr
Jul 7, 10:27 AM CDT	Flash Flood Warning	SHV	Wood	4 hr

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; the sounding from the Mesonet's radiosonde archive.