Alert archive / Louisiana / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 207, NWS Shreveport, LA

May 27, 1997De Soto Parish, Louisiana

NWS Shreveport, LA issued this severe thunderstorm warning at May 27, 1997, 5:44 PM CDT for De Soto Parish, Louisiana. It was in force for 61 min. 2 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: May 27, 1997, 5:44 PM CDT (22:44 UTC)
Expired: May 27, 1997, 6:45 PM CDT
In force: 61 min
Issued by: NWS Shreveport, LA
Area: Whole counties

County De Soto Parish, LA

The radar

The Shreveport radar (KSHV), 45 km from the middle of the area, began a volume at 22:47 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 27, 5:53 PM CDT	Hail 0.75	Stonewall, LA
May 27, 6:07 PM CDT	Hail 0.75	Frierson, LA

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 27, 1:15 PM CDT	Tornado Watch	SPC	6 hr

The nearest sounding before it

Shreveport, LA (KSHV), launched 12:00Z, 10.7 hours before the alert went out and 47 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: 1358 J/kg
Mixed-layer CIN: -154 J/kg
Mixed-layer LCL: 824 m above ground
0-6 km bulk shear: 41 kt
0-1 km storm-relative helicity: 137 m²/s²
0-3 km storm-relative helicity: 212 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 5.5

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 27, 3:41 PM CDT, 2 hours 3 minutes earlier.

Area forecast discussion, May 27, 3:41 PM CDT, 2 hours 3 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SHREVEPORT LA
330 PM CDT TUE MAY 27 1997

LATEST SFC ANALYSIS SHOWS COLD FRONT FROM DRT TO ACT TO JUST NORTH OF
TXK AND LIT.  SATELLITE ANALYSIS SHOWING EXPLOSIVE DEVELOPMENT NEAR ACT
AND NE TX WHERE SVR WARNINGS ARE RUNNING CURRENTLY.  AS STATED IN THE
MORNING PACKAGE...SOUNDINGS ARE RIPE FOR EXPOSIVE DEVELOPMENT ACROSS
THE AREA...WITH UNMODIFIED CAPES IN THE 2000 TO 4000...LI IN THE -7 TO
-12...PW OF 1 TO 2 INCHES...ETC.  THE LIT SOUNDING HAS A BIT MORE
FAVORABLE WIND PROFILE FOR TORNADOES.  TEMPS ARE ONLY IN THE UPPER 70S
TO LOWER 80S ACROSS NE TX...NW LA...AND SW AR...WITH UPPER 80S TO NEAR
90 SE TX AND S LA.

QUICK LOOK AT ETA/NGM COMPARISON RUN SHOWS FRONT ONLY SLOWLY SAGGING
SOUTH ACROSS FA.  H5 TROF SHIFTS SLOWLY EAST WITH VORT MAXES ROTATING
AROUND THE BASE THE NEXT 48 HRS OR SO.  H7 UPWARD VV ARE GREATEST
NGM WITH VALUES OF 6...VALUES OF 3 FOR 12Z WED.  WITH SOME DIFLUENCE
ARLOFT H5 AND HIGHER...THE CURRENT TREND OF EXPLOSIVE DEVELOPMENT
THROUGHOUT TONIGHT WILL CONTINUE.

QUICK LOOK AT NGM MOS...WILL USE PERSISTANCE.

SHV 68/85/65/88 6412   MLU 70/85/66/88 5422

10

In the hours before

Local storm report, May 27, 3:54 PM CDT, 1 hour 50 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SHREVEPORT LA
354 PM CDT TUE MAY 27 1997

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

0350 PM    RAVANA                    AR   1 INCH HAIL
05/27/97   MILLER                         NICKLE TO QUARTER SIZED
                                          HAIL REPORTED.

10

Local storm report, May 27, 3:58 PM CDT, 1 hour 46 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SHREVEPORT LA
354 PM CDT TUE MAY 27 1997

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

0350 PM    RAVANA                    AR   1 INCH HAIL
05/27/97   MILLER                         NICKLE TO QUARTER SIZED
                                          HAIL REPORTED.

10

Local storm report, May 27, 4:20 PM CDT, 1 hour 24 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SHREVEPORT LA
420 PM CDT TUE MAY 27 1997

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

0350 PM    JEFFERSON                 TX   1.75 INCH HAIL
05/27/97   MARION

0356 PM    BRIGHT STAR               AR   3 INCH HAIL
05/27/97   MILLER                         TWO TO THREE INCH HAIL
                                          FALLING IN SOUTHWEST
                                          MILLER COUNTY BREAKING
                                          WINDOWS OF HOME.  REPORT
                                          RELAYED BY KSLA TV-12.

0402 PM    THREE STATES              TX   .75 INCH HAIL
05/27/97   CASS                           DIME SIZED HAIL REPORTED

0408 PM    ATLANTA                   TX   1 INCH HAIL
05/27/97   CASS

10

Local storm report, May 27, 4:23 PM CDT, 1 hour 21 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SHREVEPORT LA
420 PM CDT TUE MAY 27 1997

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

0350 PM    JEFFERSON                 TX   1.75 INCH HAIL
05/27/97   MARION

0356 PM    BRIGHT STAR               AR   3 INCH HAIL
05/27/97   MILLER                         TWO TO THREE INCH HAIL
                                          FALLING IN SOUTHWEST
                                          MILLER COUNTY BREAKING
                                          WINDOWS OF HOME.  REPORT
                                          RELAYED BY KSLA TV-12.

0402 PM    THREE STATES              TX$   .75 INCH HAIL
05/27/97   CASS                           DIME SIZED HAIL REPORTED

0408 PM    ATLANTA                   TX   1 INCH HAIL
05/27/97   CASS

10

Local storm report, May 27, 5:12 PM CDT, 32 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SHREVEPORT LA
512 PM CDT TUE MAY 27 1997

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

0330 PM    VIVIAN                    LA   1 INCH HAIL
05/27/97   CADDO

0420 PM    ELYSIAN FIELDS            TX   1.75 INCH HAIL
05/27/97   HARRISON                       GOFLBALL SIZED HAIL
                                          REPORTED AT ELYSIAN
                                          FIELDS.

0450 PM    DE BERRY                  TX   .5 INCH HAIL
05/27/97   PANOLA

0456 PM    WASKOM                    TX   .5 INCH HAIL
05/27/97   HARRISON

10

Local storm report, May 27, 5:13 PM CDT, 31 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SHREVEPORT LA
512 PM CDT TUE MAY 27 1997

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

0330 PM    VIVIAN                    LA   1 INCH HAIL
05/27/97   CADDO

0420 PM    ELYSIAN FIELDS            TX   1.75 INCH HAIL
05/27/97   HARRISON                       GOFLBALL SIZED HAIL
                                          REPORTED AT ELYSIAN
                                          FIELDS.

0450 PM    DE BERRY                  TX   .5 INCH HAIL
05/27/97   PANOLA

0456 PM    WASKOM                    TX   .5 INCH HAIL
05/27/97   HARRISON

10

The office that day

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

Issued	Product	Office	Counties	Lasted
May 27, 12:41 AM CDT	Severe Thunderstorm Warning	SHV	Red River	64 min
May 27, 2:58 AM CDT	Severe Thunderstorm Warning	SHV	Bowie	62 min
May 27, 12:32 PM CDT	Severe Thunderstorm Warning	SHV	Panola	43 min
May 27, 1:16 PM CDT	Severe Thunderstorm Warning	SHV	Harrison	44 min
May 27, 2:15 PM CDT	Severe Thunderstorm Warning	SHV	Rusk	45 min
May 27, 2:43 PM CDT	Severe Thunderstorm Warning	SHV	Harrison	62 min
May 27, 3:02 PM CDT	Severe Thunderstorm Warning	SHV	Cass	28 min
May 27, 3:08 PM CDT	Severe Thunderstorm Warning	SHV	Marion	52 min
May 27, 3:42 PM CDT	Severe Thunderstorm Warning	SHV	Harrison	48 min
May 27, 3:59 PM CDT	Severe Thunderstorm Warning	SHV	Cass	46 min
May 27, 4:08 PM CDT	Flash Flood Warning	SHV	Harrison	3 hr
May 27, 4:37 PM CDT	Severe Thunderstorm Warning	SHV	Harrison	53 min
May 27, 4:46 PM CDT	Severe Thunderstorm Warning	SHV	Panola	59 min
May 27, 5:16 PM CDT	Severe Thunderstorm Warning	SHV	Bowie	59 min
May 27, 6:06 PM CDT	Severe Thunderstorm Warning	SHV	Harrison	54 min
May 27, 6:51 PM CDT	Severe Thunderstorm Warning	SHV	Shelby	54 min
May 27, 5:00 PM CDT	Severe Thunderstorm Warning	SHV	Caddo	45 min
May 27, 5:57 PM CDT	Severe Thunderstorm Warning	SHV	Bossier	48 min
May 27, 6:10 PM CDT	Severe Thunderstorm Warning	SHV	Webster	50 min
May 27, 6:38 PM CDT	Severe Thunderstorm Warning	SHV	Bienville	67 min
May 27, 2:50 AM CDT	Severe Thunderstorm Warning	SHV	Hempstead, Howard, Little River, Sevier	55 min
May 27, 3:02 AM CDT	Severe Thunderstorm Warning	SHV	Miller	58 min
May 27, 3:44 AM CDT	Severe Thunderstorm Warning	SHV	Columbia, Lafayette	61 min
May 27, 3:21 PM CDT	Severe Thunderstorm Warning	SHV	Miller	69 min

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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.