Alert archive / Louisiana / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 286, NWS Shreveport, LA
NWS Shreveport, LA issued this severe thunderstorm warning at Jun 28, 1997, 7:12 PM CDT for LaSalle Parish, Louisiana. It was in force for 33 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
- Jun 28, 1997, 7:12 PM CDT (00:12 UTC)
- Expired
- Jun 28, 1997, 7:45 PM CDT
- In force
- 33 min
- Issued by
- NWS Shreveport, LA
- Area
- Whole counties
County LaSalle Parish, LA
The radar
The Ft Polk radar (KPOE), 97 km from the middle of the area, began a volume at 00:13 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 nearest sounding before it
Jackson, MS (KJAN), launched 00:00Z, 0.2 hours before the alert went out and 209 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.
- Mixed-layer CAPE
- 2130 J/kg
- Mixed-layer CIN
- -13 J/kg
- Mixed-layer LCL
- 1148 m above ground
- 0-6 km bulk shear
- 10 kt
- 0-1 km storm-relative helicity
- 31 m²/s²
- 0-3 km storm-relative helicity
- 4 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 Jun 28, 2:30 PM CDT, 4 hours 42 minutes earlier.
Area forecast discussion, Jun 28, 2:30 PM CDT, 4 hours 42 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE SHREVEPORT LA 230 PM CDT SAT JUN 28 1997 CONVECTION HAS DVLPD ACRS SE OK AND SW AR AHEAD OF S/WV MOVG ACRS OK/TX ATTM WHILE CONVECTION ACRS NW LA HAS DVLPD IN RESPONSE TO LOW LVL MSTR CONVERGENCE...AS SEEN IN ADAP GRAPHICS. ALL THREE MODELS CONT TREND OF PUSHING S/WV OUT OF OK/TX SLOWLY TO THE E LATE TONIGHT. ALL THREE MOVE IT SLOW ENUF TO KEEP CHC PCPN ACRS AR AND LA THRU MIDDAY SUN. SRLY LOW LVL FLOW THRU THE PERIOD SHUD KEEP PLENTY OF MOIST UNSTABLE AIR AVAILABLE FOR SHWRS AND TSTMS THRU MIDDAY SUN. MODELS ALSO ALL AGREE IN BRINGING 250 TROF COMPLEETELY THRU THE AREA BY SUN AFTN... MAKING UPR LVL FLOW MORE NWLY. SHUD BE ENUF SUBSIDENCE WITH THIS TO LESSEN CHCS FOR PCPN BY LATE SUN AFTN AND INTO SUN NIGHT. STILL AGREE THAT CHC FOR SVR EXISTS ACRS MOST OF THE AREA...ESPECIALLY NRN SECTIONS INTO THE ERLY EVNG HOURS. WITH MID LVL WINDS INCREASING AND VEERING WITH APPROACH OF S/WV THIS AFTN AND EVNG MAY BE ENUF ROTATION TO PRODUCE SIG WINDS AND HAIL ACRS THE NRN PORTIONS OF THE CWA. FOR POPS WILL TREND CLOSER TO AVN THIS FCST AS NGM MSTR AND LIFT LOOKS TO BE UNDERDONE SOMEWHAT. EVEN USING AVN WILL HAVE TO UP POPS FOR THE EVNG. WILL STAY FAIRLY CLOSE TO GUIDANCE TEMPS. SHV 72/92/71/92 5411 MLU 73/92/72/92 6521 18
In the hours before
Local storm report, Jun 28, 3:28 PM CDT, 3 hours 44 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE OFFICE SHREVEPORT LA
328 PM CDT SAT JUN 28 1997
TIME(CDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
1220 PM 5 N FOREMAN AR WIND DAMAGE
06/28/97 LITTLE RIVER POWER LINES DOWN ALONG HWY
41.
0239 PM 3 S PLAIN DEALING LA WIND DAMAGE
06/28/97 BOSSIER TREES AND POWER LINES DOWN
ALONG OLD PLAIN DEALING
ROAD.
18Local storm report, Jun 28, 3:29 PM CDT, 3 hours 43 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE OFFICE SHREVEPORT LA
328 PM CDT SAT JUN 28 1997
TIME(CDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
1220 PM 5 N FOREMAN AR WIND DAMAGE
06/28/97 LITTLE RIVER POWER LINES DOWN ALONG HWY
41.
0239 PM 3 S PLAIN DEALING LA WIND DAMAGE
06/28/97 BOSSIER TREES AND POWER LINES DOWN
ALONG OLD PLAIN DEALING
ROAD.
18Nearby
Severe Thunderstorm Warnings in Louisiana, 1997Every 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.