Alert archive / Louisiana / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 394, NWS Shreveport, LA

November 5, 1997Claiborne Parish, Louisiana

NWS Shreveport, LA issued this severe thunderstorm warning at Nov 5, 1997, 7:38 AM CST for Claiborne Parish, Louisiana. It was in force for 52 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: Nov 5, 1997, 7:38 AM CST (13:38 UTC)
Expired: Nov 5, 1997, 8:30 AM CST
In force: 52 min
Issued by: NWS Shreveport, LA
Area: Whole counties

County Claiborne Parish, LA

The radar

The Shreveport radar (KSHV), 89 km from the middle of the area, began a volume at 13:41 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
Nov 5, 7:00 AM CST	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Shreveport, LA (KSHV), launched 12:00Z, 1.6 hours before the alert went out and 80 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: 85 J/kg
Mixed-layer CIN: -182 J/kg
Mixed-layer LCL: 621 m above ground
0-6 km bulk shear: 41 kt
0-1 km storm-relative helicity: 466 m²/s²
0-3 km storm-relative helicity: 616 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 8.7

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 Nov 5, 3:04 AM CST, 4 hours 34 minutes earlier.

Area forecast discussion, Nov 5, 3:04 AM CST, 4 hours 34 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SHREVEPORT LA
240 AM CST WED NOV 5 1997

QUITE A BIT OF CNVTN GOING ON THIS MORNING SO THIS WILL NOT BE VERY
LONG. STG S/WV CONTS TO DIVE SE DOWN THE BACK SIDE OF THE ERN CONUS
TROF THIS MORNING AND LOW PRESSURE IS DEEPENING AT THE SFC IN RESPONSE.
SRLY FLOW IN THE LOW LVLS CONTS TO DRAW MSTR NWD AND IS YIELDING NMRS
ELEVATED SHRA/TSRA AS IT INTERACTS WITH THE MID/UPR LVL ENERGY. MDLS
ARE A LITTLE SLOWER WITH THE FRONT THAN 24 HRS AGO AND NOW INDICATE
THE BNDRY REACHING NR TXK ARND 21Z...SHV NR 00Z AND EXITING THE AREA
BY ARND 06Z. VRY DRY AND SOMEWHAT COOLER AIR WILL SPILL IN BEHIND THE
SYS AND WILL RESULT IN FAIR AND DRY WX FOR US AS WE HEAD TWD THE END
OF THE WEEK.

FWC GUIDANCE HAS BEEN PRETTY CONSISTENT LATELY AND THE CRNT NUMBERS
LOOK OK. ETA AND AVN ARE A LITTLE COOLER THAN FWC ON THU BUT WITH
MAX SUNSHINE...THINK THE FWC NUMBERS ARE REACHABLE.

SHV 69/46/60/37 7200     MLU 65*/47/61/38 8500

5

In the hours before

Local storm report, Nov 5, 7:34 AM CST, 4 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SHREVEPORT LA
735 AM CST WED NOV 05 1997

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

0555 AM    TEXARKANA                 AR   1 INCH HAIL
11/05/97   MILLER

0555 AM    TEXARKANA                 TX   1 INCH HAIL
11/05/97   BOWIE

0625 AM    DODDRIDGE                 AR   .75 INCH HAIL
11/05/97   MILLER

0640 AM    WASKOM     n               TX   .88 INCH HAIL
11/05/97   HARRISON

VIII.

Local storm report, Nov 5, 7:35 AM CST, 3 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SHREVEPORT LA
735 AM CST WED NOV 05 1997

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

0555 AM    TEXARKANA                 AR   1 INCH HAIL
11/05/97   MILLER

0555 AM    TEXARKANA                 TX   1 INCH HAIL
11/05/97   BOWIE

0625 AM    DODDRIDGE                 AR   .75 INCH HAIL
11/05/97   MILLER

0640 AM    WASKOM                    TX   .88 INCH HAIL
11/05/97   HARRISON

VIII.

The office that day

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

Issued	Product	Office	Counties	Lasted
Nov 5, 5:32 AM CST	Severe Thunderstorm Warning	SHV	Bowie	43 min
Nov 5, 5:58 AM CST	Severe Thunderstorm Warning	SHV	Cass	47 min
Nov 5, 6:18 AM CST	Severe Thunderstorm Warning	SHV	Morris	27 min
Nov 5, 6:31 AM CST	Severe Thunderstorm Warning	SHV	Harrison	44 min
Nov 5, 7:27 AM CST	Severe Thunderstorm Warning	SHV	Marion	48 min
Nov 5, 8:40 AM CST	Severe Thunderstorm Warning	SHV	Harrison	35 min
Nov 5, 6:43 AM CST	Severe Thunderstorm Warning	SHV	Caddo	47 min
Nov 5, 6:59 AM CST	Severe Thunderstorm Warning	SHV	Bossier	61 min
Nov 5, 7:13 AM CST	Severe Thunderstorm Warning	SHV	Webster	47 min
Nov 5, 7:33 AM CST	Severe Thunderstorm Warning	SHV	Caddo	42 min
Nov 5, 8:32 AM CST	Severe Thunderstorm Warning	SHV	Bossier	28 min
Nov 5, 12:05 AM CST	Severe Thunderstorm Warning	SHV	Miller	25 min
Nov 5, 6:21 AM CST	Severe Thunderstorm Warning	SHV	Lafayette, Miller	54 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.