Alert archive / Louisiana / Severe Thunderstorm Warnings in 2005

Severe Thunderstorm Warning 39, NWS Lake Charles, LA

April 22, 2005Saint Landry Parish, Louisiana

NWS Lake Charles, LA issued this severe thunderstorm warning at Apr 22, 2005, 6:31 PM CDT for Saint Landry Parish, Louisiana. It was in force for 29 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Apr 22, 2005, 6:31 PM CDT (23:31 UTC)
Expired: Apr 22, 2005, 7:00 PM CDT
In force: 29 min
Issued by: NWS Lake Charles, LA
Area: Counties, with a storm outline in the text

County Saint Landry Parish, LA

Did it verify

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The nearest sounding before it

Lake Charles Mun, LA (KLCH), launched 12:00Z, 11.5 hours before the alert went out and 147 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: 425 J/kg
Mixed-layer CIN: -205 J/kg
Mixed-layer LCL: 751 m above ground
0-6 km bulk shear: 25 kt
0-1 km storm-relative helicity: 65 m²/s²
0-3 km storm-relative helicity: 79 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.4

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WUUS54 KLCH 222331
SVRLCH
LAC097-230000-
/O.NEW.KLCH.SV.W.0039.050422T2331Z-050423T0000Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE LAKE CHARLES LA
631 PM CDT FRI APR 22 2005

THE NATIONAL WEATHER SERVICE IN LAKE CHARLES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  ST. LANDRY PARISH IN CENTRAL LOUISIANA

* UNTIL 700 PM CDT

* AT 627 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING NICKEL SIZE HAIL...AND
  DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED OVER
  PALMETTO...AND MOVING SOUTHEAST AT 25 MPH.

SEVERE THUNDERSTORMS PRODUCE WINDS IN EXCESS OF 60 MPH...DESTRUCTIVE
HAIL...DEADLY LIGHTNING AND TORRENTIAL RAIN.

CALL 337-477-5285 TO REPORT SEVERE WEATHER TO THE WEATHER SERVICE.

LAT...LON 3083 9186 3067 9196 3055 9176 3077 9178

$$

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 Apr 22, 3:25 PM CDT, 3 hours 6 minutes earlier.

Area forecast discussion, Apr 22, 3:25 PM CDT, 3 hours 6 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LAKE CHARLES LA
325 PM CDT FRI APR 22 2005

.SYNOPSIS...CURRENT SFC ANALYSIS SHOWS A CDFNT ACROSS NWRN LA INTO
E-CNTL TX W/ A PRE-FNTL TROF RUNNING FROM THE GALVESTON BAY AREA
NEWD TOWARD THE LAKES REGION THEN E ACROSS CNTL LA. WATER VAPOR
IMAGERY SHOWS MID/UPR LO ROTATING PAST THE MS RIVER INTO SRN IL W/
A VORT LOBE EXTENDING SW THROUGH THE TN & MS VALLEYS. 18Z SPECIAL
KLCH SOUNDING STILL SHOWED A WEAK CAP AND WAS FAIRLY DRY IN THE LWR-
LVLS. AREA 88DS SHOW EARLIER CONVECTION WHICH MOVED INTO THE NERN
ZONES DISSIPATED FAIRLY QUICKLY...HOWEVER ADDITIONAL ACTIVITY IS
DEVELOPING ALONG THE TROF AND HEADING TOWARD THE EXTREME NRN ZONES.

&&

.DISCUSSION...NOTHING IMPRESSIVE HAS YET TO HAPPEN W/ THIS AFTNS
POSSIBLE SVR WX EVENT. APPEARS THE CAP/DRY AIR IS WINNING SO FAR.
AS THE MID-LVL LO PROGRESSES TO THE E WE MAY GET A QUICK SHOT OF
COOLING ALOFT WHICH WOULD BUST THE CAP AND ALLOW SOMETHING TO GET
GOING. SPECIAL SOUNDING DID INDICATE A SLIGHTLY UNSTABLE AIRMASS
WHICH HAS LIKELY BECOME A LITTLE MORE UNSTABLE W/ ADDITIONAL
HEATING. HOWEVER KJANS 18Z SOUNDING AS WELL AS LAPS DATA INDICATE
BEST CAPE/LIS STAYING TO OUR NE. WILL GO AHEAD AND MAINTAIN CHC
POPS ALREADY IN THE FCST. NOT TOO CONVINCED ON SVR WX THREAT BUT
WILL LEAVE MENTION IN THE ZONES W/ A WATCH BOX IN EFFECT.

ONCE THE FNT PASSES THRU THE AREA TNGT A NICE WEEKEND LOOKS ON
TAP. MEAN RH VALUES PROGGED TO DROP TO LESS THAN 25 PCNT WHILE
DEWPTS FALL INTO THE 30S. RECORD LOW TEMPS POSSIBLE SUN MRNG AT
KAEX/KBPT...WHILE NEAR RECORD LOWS POSSIBLE AT KLFT/KARA. RAIN
CHANCES RETURN TO THE FCST AS EARLY AS MON AS NEXT MID/UPR-LVL
SYSTEM CROSSES THE SWRN CONUS WHILE SFC FNT APPROACHES THE REGION
FROM THE W. POPS LINGER INTO TUE EVE WHEN FNT FINALLY MAKES IT
THRU THE AREA.

&&

.MARINE...SCA WILL BE REQUIRED THIS ISSUANCE AS WINDS PICK UP TO
THE 20 KT THRESHOLD WITHIN 12 HR (BARELY). WINDS WILL QUICKLY DROP
OFF LATER SAT AS HI PRES BEGINS TO FILTER INTO THE REGION.

&&

.AVIATION...MVFR CONDITIONS POSSIBLE AROUND THE TIME OF FNTL
PASSAGE...THEN VFR CONDITIONS THRU THE WEEKEND. AS OF NOW TRW ARE
BEING TEMPOED AROUND FROPA.

&&

.PRELIMINARY POINT TEMPS/POPS...
KLCH  57  75  46  74 /  30  10   0   0
KBPT  56  75  46  74 /  40  10   0   0
KAEX  54  71  41  72 /  30  10   0   0
KLFT  58  74  47  73 /  30  10   0   0

&&

.LCH WATCHES/WARNINGS/ADVISORIES...
LA...SEVERE THUNDERSTORM WATCH 168 IN EFFECT UNTIL 00Z FOR ALL
     ZONES EXCEPT SERN QUARTER.
TX...SEVERE THUNDERSTORM WATCH 168 IN EFFECT UNTIL 00Z FOR ALL
     ZONES.
CW...SMALL CRAFT ADVISORY IN EFFECT ALL ZONES.

&&

LGE

Hazardous weather outlook, Apr 22, 5:00 AM CDT, 13 hours 31 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE LAKE CHARLES LA
500 AM CDT FRI APR 22 2005

GMZ450-455-470-475-LAZ027>033-041>045-051>055-TXZ180>182-201-215-216-
231100-
ACADIA-ALLEN-AVOYELLES-BEAUREGARD-CALCASIEU-CAMERON-EVANGELINE-
HARDIN-IBERIA-JASPER-JEFFERSON-JEFFERSON DAVIS-LAFAYETTE-
LOWER ST. MARTIN-NEWTON-ORANGE-RAPIDES-ST. LANDRY-ST. MARY-TYLER-
UPPER ST. MARTIN-VERMILION-VERNON-
INCLUDING THE CITIES OF...WOODVILLE...PORT ARTHUR...ORANGE...
NEWTON...KOUNTZE...JASPER...BEAUMONT...OBERLIN...ABBEVILLE...
VILLE PLATTE...OPELOUSAS...NEW IBERIA...MORGAN CITY...MARKSVILLE...
LEESVILLE...LAKE CHARLES...LAFAYETTE...JENNINGS...DERIDDER...
CROWLEY...CAMERON AND ALEXANDRIA

THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHEAST TEXAS...SOUTHWEST
AND SOUTH CENTRAL LOUISIANA...AND THE ADJACENT COASTAL WATERS.

.DAY ONE...TODAY AND TONIGHT
ISOLATED SEVERE STORMS POSSIBLE LATE THIS AFTERNOON INTO THE EVENING
HOURS. A COLD FRONT WILL ENTER THE AREA DURING THE LATE AFTERNOON
HOURS AND MOVE THROUGH DURING THE EVENING HOURS AND BE OFF THE COAST
AROUND MIDNIGHT. THE AIRMASS WILL BECOME VERY UNSTABLE DURING THE
AFTERNOON. AS THE FRONT MOVES INTO THIS AIRMASS...SCATTERED SHOWERS
AND THUNDERSTORMS WILL DEVELOP. WITH DRY AND COOL AIR IN THE MID
LEVELS OF THE ATMOSPHERE...SOME OF STORMS WILL BE CAPABLE OF
PRODUCING HAIL OF AROUND THE SIZE OF A PENNY.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY

HIGH PRESSURE WILL BUILD IN BEHIND THE FRONT FOR THE WEEKEND WITH
DRY CONDITIONS AND COOL NIGHTS. SUFFICIENT MOISTURE IS EXPECTED TO
RETURN EARLY NEXT WEEK WITH A CHANCE OF SHOWERS AND THUNDERSTORMS ON
LATE MONDAY INTO TUESDAY.

.SPOTTER INFORMATION STATEMENT...
THE ACTIVATION OF STORM SPOTTERS, HAM RADIO OPERATORS, AND EMERGENCY
MANAGEMENT PERSONNEL...IN SUPPORT OF SEVERE WEATHER OPERATIONS...MAY
BE POSSIBLE LATE THIS AFTERNOON INTO THE EVENING HOURS.

RUA

In the hours before

Local storm report, Apr 22, 5:11 PM CDT, 1 hour 20 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LAKE CHARLES LA
511 PM CDT FRI APR 22 2005

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0428 PM     TSTM WND DMG     4 NE GARDNER            31.31N 92.65W
04/22/2005                   RAPIDES            LA   PUBLIC

            TREE BLOWN DOWN ACROSS HIGHWAY 121 NEAR MCNUTT, ALONG
            WITH PEA TO MARBLE SIZE HAIL.

&&

SHAMBURGER

Local storm report, Apr 22, 5:49 PM CDT, 42 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LAKE CHARLES LA
549 PM CDT FRI APR 22 2005

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0535 PM     TSTM WND DMG     BUNKIE                  30.95N 92.19W
04/22/2005                   AVOYELLES          LA   PUBLIC

            NUMEROUS POWER LINES REPORTED BLOWN DOWN IN DOWNTOWN
            BUNKIE.

&&

SHAMBURGER

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 22, 4:05 PM CDT	Severe Thunderstorm Warning	LCH	Rapides	55 min
Apr 22, 5:00 PM CDT	Severe Thunderstorm Warning	LCH	Avoyelles, Rapides	60 min
Apr 22, 5:52 PM CDT	Severe Thunderstorm Warning	LCH	Avoyelles, Saint Landry	38 min

Nearby

Severe Thunderstorm Warnings in Louisiana, 2005 Every severe thunderstorm warning in 2005

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.