Alert archive / Louisiana / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 375, NWS Shreveport, LA

October 25, 1997Webster Parish, Louisiana

NWS Shreveport, LA issued this severe thunderstorm warning at Oct 25, 1997, 7:21 PM CDT for Webster Parish, Louisiana. It was in force for 39 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: Oct 25, 1997, 7:21 PM CDT (00:21 UTC)
Expired: Oct 25, 1997, 8:00 PM CDT
In force: 39 min
Issued by: NWS Shreveport, LA
Area: Whole counties

County Webster Parish, LA

The radar

The Shreveport radar (KSHV), 56 km from the middle of the area, began a volume at 00:21 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Oct 25, 2:45 PM CDT	Tornado Watch	SPC	6 hr

The nearest sounding before it

Lake Charles Mun, LA (KLCH), launched 00:00Z, 0.4 hours before the alert went out and 289 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: 4126 J/kg
Mixed-layer CIN: -1 J/kg
Mixed-layer LCL: 524 m above ground
0-6 km bulk shear: 34 kt
0-1 km storm-relative helicity: 84 m²/s²
0-3 km storm-relative helicity: 74 m²/s²
Significant tornado parameter: 1.8
Supercell composite: 8.0

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 Oct 25, 3:48 PM CDT, 3 hours 33 minutes earlier.

Area forecast discussion, Oct 25, 3:48 PM CDT, 3 hours 33 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SHREVEPORT LA
340 PM CDT SAT OCT 25 1997

TSTMS THIS AFTN ERUPTED ALG SVRL PREFNTL BANDS RATHER THAN ONE SQUALL
LINE THUS FAR. THIS I BELIEVE HAS PREVENTED STORMS FROM REACHING FULL
POTENTIAL AS THEY COMPETE FOR AVAILABLE MSTR. STILL...HAIL HAS BEEN
RPTD FM SVRL STORMS. TWO PSBL FACTORS WHICH CUD STILL INTENSIFY. BRKS
IN CLDS HAVE INCREASED INVOK STORMS ACRS SOUTH AR/NORTH LA. LEADING
BAND CURRENTLY HAVING STGST STORMS MAY INDICATE THIS TREND. ALSO...SPD
MAX THRU BASE OF TROF TO THE WEST MAY STILL PROVIDE AN EXTRA PUNCH.
WIND SHIFT/CLRG ACTUALLY BEHIND DRY LINE...WHICH THE COLD FNT HAS NOT
CAUGHT UP TO YET. WIND BEGIN TO SHIFT AT PRX. CLRG AFT DRYLINE FOR A
FEW HRS BUT HIGH MSTR BEHIND FNT SO WILL BE LUKG AT CLDY SKIES ONCE
AGAIN RTNG DURG MRNG. SECONDARY VORT TRAILING JET AND MAY SEE A FEW
RW ON SUN...MAINLY EAST TX. OTHERWISE...CLDS AND GUSTY W-NW WINDS ALLOW
FOR LITTLE RISE IN TEMPS ON SUN. 850 ZERO LINE INTO EXTREME NW LA SUN
NITE SO WILL SEE NR FRZG TEMPS NW CWA. LUCKY MSTR JUST GETTING CLRD
OUT BY THEN! MOSTLY SUNNY AND COOL ON MON. NGM SEEMED TO INITIALIZE
BEST BUT WHERE DID IT GET SUCH LOW POPS?! SO AM JUST USING A GENERAL:
MODEL BLEND.

SHV 54/56/38/58  62-0         MLU 60/65/40/57  7310

VII

In the hours before

Local storm report, Oct 25, 3:02 PM CDT, 4 hours 19 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SHREVEPORT LA
300 PM CDT SAT OCT 25 1997

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

0200 PM    4 W TYLER                 TX   1/2 INCH HAIL REPORTED
10/25/97   SMITH                          NEAR THE TYLER AIRPORT

0245 PM    6 W DAINGERFIELD          TX   1/4 INCH HAIL REPORTED
10/25/97   TITUS                          BY COOPERATIVE OvBSERVER

21

Local storm report, Oct 25, 3:22 PM CDT, 3 hours 59 minutes before

PRELIMINARY LOCAL STORM REPORT...CORRECTED AND UPDATED....
NATIONAL WEATHER SERVICE SHREVEPORT LA
322 PM CDT SAT OCT 25 1997

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

0131 PM    ALBA                      TX   1 INCH HAIL
10/25/97   WOOD                           ALBA VOLUNTEER FIRE
                                          DEPARTMENT REPORTED 1 INCH
                                          HAIL ALONG WITH TREES AND
                                          POWER LINES DOWN.

0200 PM    4 W TYLER                 TX   .5 INCH HAIL
10/25/97   SMITH

0245 PM    6 W DAINGERFIELD          TX   1 INCH HAIL
10/25/97   TITUS                          CORRECTION TO 1/4 INCH
                                          PREVIOUS SENT.

0300 PM    5 N BATTIEST              OK   .5 INCH HAIL
10/25/97   MCCURTAIN

0320 PM    WHITE OAK                 TX   1 INCH HAIL
10/25/97   GREGG

10

Local storm report, Oct 25, 3:35 PM CDT, 3 hours 46 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SHREVEPORT LA
335 PM CDT SAT OCT 25 1997

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

0330 PM    3 N LONGVIEW              TX   1.25 INCH HAIL
10/25/97   GREGG

10

Local storm report, Oct 25, 3:37 PM CDT, 3 hours 44 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SHREVEPORT LA
335 PM CDT SAT OCT 25 1997

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

0330 PM    3 N LONGVIEW              TX   1.25 INCH HAIL
10/25/97   GREGG

10

Local storm report, Oct 25, 6:41 PM CDT, 40 minutes before

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Local storm report, Oct 25, 6:44 PM CDT, 37 minutes before

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      <h1 id="headline">This service is currently unavailable.</h1>
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        Please try again in a few minutes.
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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; radar from the NEXRAD Level II archive.