Alert archive / Louisiana / Severe Thunderstorm Warnings in 1996

Severe Thunderstorm Warning 87, NWS Lake Charles, LA

September 27, 1996Beauregard Parish, Calcasieu Parish, Louisiana

NWS Lake Charles, LA issued this severe thunderstorm warning at Sep 27, 1996, 7:12 AM CDT for Beauregard Parish, Calcasieu Parish, Louisiana. It was in force for 63 min. 1 report 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
Sep 27, 1996, 7:12 AM CDT (12:12 UTC)
Expired
Sep 27, 1996, 8:15 AM CDT
In force
63 min
Issued by
NWS Lake Charles, LA
Area
Whole counties

Counties Beauregard Parish, LA, Calcasieu Parish, LA

The radar

The Lake Charles radar (KLCH), 37 km from the middle of the area, began a volume at 12:16 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

TimeReportWhereRemark
Sep 27, 8:00 AM CDTThunderstorm WindMoss Bluff, 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 nearest sounding before it

Lake Charles Mun, LA (KLCH), launched 12:00Z, 0.2 hours before the alert went out and 38 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-pSkew-T log-p diagram, Lake Charles Mun, LA at 12:00Z on 1996-09-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1499 joules per kilogram.LCLEL10008507005003002001001 km2 km3 km6 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Lake Charles Mun, LA at 12:00Z on 1996-09-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 164 square meters per square second.193958Sfc1 km3 km6 kmRMLM
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
1499 J/kg
Mixed-layer CIN
-1 J/kg
Mixed-layer LCL
581 m above ground
0-6 km bulk shear
38 kt
0-1 km storm-relative helicity
164 m²/s²
0-3 km storm-relative helicity
182 m²/s²
Significant tornado parameter
0.8
Supercell composite
4.6

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 Lake Charles, LA wrote its last area forecast discussion before this severe thunderstorm warning went out at Sep 27, 2:25 AM CDT, 4 hours 47 minutes earlier.

Area forecast discussion, Sep 27, 2:25 AM CDT, 4 hours 47 minutes before
SOUTHEAST TEXAS..SOUTHWEST AND CENTRAL LOUISIANA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LAKE CHARLES LA
225 AM CDT FRI SEP 27 1996

KLCH RADAR SHOWS LINE OF SHOWERS AND THUNDERSTORMS DRAPED ACROSS
UPPR SE TX. LINE HAS BECOME STNRY WITH TRAINING ECHOS FM W TO E
AT 30 KTS. STP INDICATES BTWN 1 AND 2 INCHES OF RAINFALL ACROSS
NRN PRTNS OF TYLER AND JASPER COUNTIES. THIS LEADS INTO FCST PRBLM
OF THE DAY WITH HVY RNFL AND FLASH FLOOD PTNL. CLD FNT FM SHV TO
JUST N OF LFK WL RMN NRLY STNRY TDY AS UPPR TROF LAGS BEHIND
WITH STRONG VORT MAX DIGGING DOWN BACKSIDE. THIS SLOWING DOWN
ALRDY NOTED IN THE ABOVE MENTIONED RADAR DATA.  PWS RMN AOA 1.8
INCHES...K-INDEX GRTR THAN 30...LI/S -4 TO -6...AND THETA-E RDG AT
85H AND 70H ALL POINTING TO FLASH FLOOD EVENT ACROSS CWA. COORD
WITH SAT FOR FFA SE TX CNTYS AND WL SUGGEST THE SAME LA ZNS.
APPRS SVR WX PTNL FRTHR NORTH WITH BEST UPPR DYNAMICS. TIME SXNS
INDICATE PRONOUNCED DRYING AFTER 36H AS S/W ROUNDS BASE OF
UPPR TROF WITH FTR BCMG PROGRESSIVE.  AS FOR TEMPS...PREFER COOLER
AVN NUMBERS WITH RAIN-COOLED AIR.

5

BPT 81/62/75 841
LCH 82/62/75 841 LFT 85/65/75 852  AEX  79/58/69

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 27, 1:04 PM CDTSevere Thunderstorm WarningLCHSt. Mary56 min
Sep 27, 2:27 PM CDTFlash Flood WarningLCHLafayette7 hr
Sep 26, 11:56 PM CDTFlash Flood WarningLCHTyler64 min
Sep 27, 12:52 AM CDTSevere Thunderstorm WarningLCHJasper68 min
Sep 27, 2:59 AM CDTFlash Flood WarningLCHTyler2 hr
Sep 27, 5:05 AM CDTFlash Flood WarningLCHTyler115 min
Sep 27, 5:21 AM CDTSevere Thunderstorm WarningLCHHardin69 min
Sep 27, 6:13 AM CDTSevere Thunderstorm WarningLCHJasper47 min
Sep 27, 8:50 AM CDTFlash Flood WarningLCHJefferson, Orange115 min
Sep 27, 9:57 AM CDTFlash Flood WarningLCHHardin2 hr
Sep 27, 10:40 AM CDTFlash Flood WarningLCHJefferson, Orange4 hr
Sep 27, 11:54 AM CDTFlash Flood WarningLCHHardin3 hr
Sep 27, 2:40 PM CDTFlash Flood WarningLCHHardin, Jefferson, Orange3 hr

Nearby

Severe Thunderstorm Warnings in Louisiana, 1996Every severe thunderstorm warning in 1996

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.