Alert archive / Louisiana / Severe Thunderstorm Warnings in 2014

Severe Thunderstorm Warning 58, NWS Lake Charles, LA

August 25, 2014Rapides Parish, Louisiana

NWS Lake Charles, LA issued this severe thunderstorm warning at Aug 25, 2014, 3:46 PM CDT for Rapides Parish, Louisiana. It was in force for 44 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
Aug 25, 2014, 3:46 PM CDT (20:46 UTC)
Expired
Aug 25, 2014, 4:30 PM CDT
In force
44 min
Issued by
NWS Lake Charles, LA
Area
Storm-based polygon

County Rapides Parish, LA

The radar

The Ft Polk radar (KPOE), 42 km from the middle of the area, began a volume at 20:46 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

Lake Charles Mun, LA (KLCH), launched 12:00Z, 8.8 hours before the alert went out and 136 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 2014-08-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2019 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 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 2014-08-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 39 square meters per square second.1939Sfc1 km3 km6 km9 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
2019 J/kg
Mixed-layer CIN
-46 J/kg
Mixed-layer LCL
1090 m above ground
0-6 km bulk shear
18 kt
0-1 km storm-relative helicity
39 m²/s²
0-3 km storm-relative helicity
26 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

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 Aug 25, 3:45 PM CDT, 1 minute earlier.

Area forecast discussion, Aug 25, 3:45 PM CDT, 1 minute before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LAKE CHARLES LA
345 PM CDT MON AUG 25 2014

.DISCUSSION...
LOCAL 88DS ARE BEGINNING TO LIGHT UP WITH SCATTERED SHOWERS/STORMS
DEVELOPING IN RESPONSE TO THE ERLY WAVE CROSSING SERN LA ATTM.
EXPECT SOME OF THE NRN CONVECTION TO BEGIN DYING OFF WITH LOSS OF
HEATING THIS EVENING BUT HAVE MAINTAINED HIGHER POPS TONIGHT
CLOSER TO THE COAST WHERE LIFT/MOISTURE IS PROGGED TO REMAIN A
LITTLE BETTER. HIGHEST POPS WILL CONTINUE SPREADING WWD CLOSER TO
THE COAST AS THE WAVE CONTINUES PUSHING WWD ACROSS THE NWRN GULF
INTO TOMORROW MORNING. CONDITIONS LOOK TO IMPROVE BY TOMORROW
AFTERNOON AS DRYING ACCOMPANIES SOME RIDGING ALOFT RE-ESTABLISHING
ITSELF ESPECIALLY ACROSS THE ERN 1/2 OF THE AREA.

POST-WAVE AND THROUGH MID-WEEK MOISTURE IS PROGGED TO REMAIN
SOMEWHAT ELEVATED ESPECIALLY NEAR THE COAST WHILE THE RIDGE ALOFT
NUDGES SWD TOWARD THE REGION. FOR NOW HAVE MAINTAINED SMALL POPS
AREA-WIDE...TRENDING HIGHER FROM N-S. BY LATE IN THE WORK WEEK THE
AREA WILL BECOME UNDER A LITTLE BETTER INFLUENCE OF THE
APPROACHING WRN CONUS TROF...AND THE INCREASING MOISTURE/LIFT WILL
ALLOW FOR THE GRADUAL ELEVATION IN POPS INTO THE WEEKEND. RAIN
CHANCES WILL FINALLY WANE BY SUNDAY AS THE TROF AXIS WEAKENS AND
MOVES E OF THE AREA.

&&

.MARINE...
WINDS WILL GRADUALLY VEER AROUND TO A MORE TYPICAL SRLY DIRECTION
BY MID-WEEK AS THE WAVE MOVES WEST OF THE COASTAL WATERS AND HIGH
PRESSURE BECOMES RE-ESTABLISHED TO OUR EAST. NO FLAGS ARE
ANTICIPATED THROUGH THE PERIOD ATTM.

&&

.PRELIMINARY POINT TEMPS/POPS...
KLCH  77  92  75  92  76 /  40  40  10  20  20
KBPT  77  91  77  93  76 /  40  50  20  30  30
KAEX  74  93  72  94  73 /  40  20  10  20  20
KLFT  76  92  74  93  76 /  50  30  10  30  30

&&

.LCH WATCHES/WARNINGS/ADVISORIES...
LA...NONE.
TX...NONE.
GM...NONE.
&&

FOLLOW US ON FACEBOOK...TWITTER...AND YOUTUBE AT:
WWW.FACEBOOK.COM/NWSLAKECHARLES
WWW.TWITTER.COM/NWSLAKECHARLES
WWW.YOUTUBE.COM/NWSLAKECHARLES

&&

25
Hazardous weather outlook, Aug 25, 5:25 AM CDT, 10 hours 21 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE LAKE CHARLES LA
525 AM CDT MON AUG 25 2014

GMZ430-432-435-450-452-455-470-472-475-LAZ027>033-041>045-052>055-
073-074-TXZ180-201-215-216-259>262-261030-
SABINE LAKE-CALCASIEU LAKE-VERMILION BAY-
COASTAL WATERS FROM CAMERON LA TO HIGH ISLAND TX OUT 20 NM-
COASTAL WATERS FROM INTRACOASTAL CITY TO CAMERON LA OUT 20 NM-
COASTAL WATERS FROM LOWER ATCHAFALAYA RIVER TO INTRACOASTAL CITY
LA OUT 20 NM-
WATERS FROM CAMERON LA TO HIGH ISLAND TX FROM 20 TO 60 NM-
WATERS FROM  INTRACOASTAL CITY TO CAMERON LA FROM 20 TO 60 NM-
WATERS FROM LOWER ATCHAFALAYA RIVER TO INTRACOASTAL CITY LA FROM
20 TO 60 NM-VERNON-RAPIDES-AVOYELLES-BEAUREGARD-ALLEN-EVANGELINE-
ST. LANDRY-CALCASIEU-JEFFERSON DAVIS-ACADIA-LAFAYETTE-
UPPER ST. MARTIN-VERMILION-IBERIA-ST. MARY-LOWER ST. MARTIN-
WEST CAMERON-EAST CAMERON-TYLER-HARDIN-JEFFERSON-ORANGE-
NORTHERN JASPER-NORTHERN NEWTON-SOUTHERN JASPER-SOUTHERN NEWTON-
525 AM CDT MON AUG 25 2014

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF THE NORTHWEST
GULF OF MEXICO...CENTRAL LOUISIANA...SOUTH CENTRAL LOUISIANA...
SOUTHWEST LOUISIANA...WEST CENTRAL LOUISIANA AND SOUTHEAST TEXAS.

.DAY ONE...TODAY AND TONIGHT

A TROF OF LOW PRESSURE ADVANCING WEST ACROSS THE AREA WILL BRING
AN INCREASING CHANCE FOR SHOWERS AND THUNDERSTORMS THIS AFTERNOON
AND TONIGHT.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY

SHOWERS AND THUNDERSTORMS WILL BE ON THE DECREASE MOVING THROUGH
TUESDAY...WITH ONLY LOW END RAINS CHANCES EXPECTED FOR MID-WEEK.
A DEEP SOUTHERLY FLOW DEVELOPING LATE IN THE WEEK WILL RESULT IN
ANOTHER INCREASE IN SHOWER AND THUNDERSTORM COVERAGE.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL LIKELY NOT BE REQUIRED.

In the hours before

Special weather statement, Aug 25, 2:50 PM CDT, 56 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE LAKE CHARLES LA
250 PM CDT MON AUG 25 2014

LAZ028-029-252030-
RAPIDES LA-AVOYELLES LA-
250 PM CDT MON AUG 25 2014

...SIGNIFICANT WEATHER ADVISORY FOR RAPIDES AND AVOYELLES PARISHES
UNTIL 330 PM CDT...

AT 248 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
STRONG THUNDERSTORM 5 MILES NORTHEAST OF HOLLOWAY...MOVING SOUTHWEST
AT 20 MPH.

THE STRONG THUNDERSTORM WILL AFFECT AREAS IN AND AROUND...DEVILLE...
HOLLOWAY...ESLER REGIONAL AIRPORT...BALL...LIBUSE AND EFFIE.

THE PRIMARY THREATS FROM THIS STORM ARE FREQUENT LIGHTNING...PEA TO
NICKEL SIZE HAIL...AND WIND GUSTS 35 TO 45 MPH...WHICH COULD DOWN
TREE LIMBS AND BLOW AROUND UNSECURED SMALL OBJECTS. SEEK SHELTER IN A
SAFE HOME OR BUILDING UNTIL THIS STORM HAS PASSED.

THIS STORM COULD PRODUCE RAINFALL AMOUNTS OF ONE TO TWO INCHES IN A
SHORT PERIOD OF TIME...RESULTING IN PONDING OF WATER AROUND LOW LYING
ROADWAYS. REMEMBER...DO NOT DRIVE YOUR VEHICLE INTO WATER COVERED
ROADWAYS. THE DEPTH MAY BE TOO GREAT TO ALLOW A SAFE CROSSING.

LAT...LON 3147 9216 3141 9215 3136 9207 3134 9207
      3135 9203 3131 9200 3109 9233 3138 9264
      3142 9255 3148 9223 3148 9219

24
Special weather statement, Aug 25, 3:36 PM CDT, 10 minutes before
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Special weather statement, Aug 25, 3:39 PM CDT, 7 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE LAKE CHARLES LA
339 PM CDT MON AUG 25 2014

LAZ028-252130-
RAPIDES LA-
339 PM CDT MON AUG 25 2014

...SIGNIFICANT WEATHER ADVISORY FOR RAPIDES PARISH UNTIL 430 PM
CDT...

AT 335 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
CLUSTER OF STRONG THUNDERSTORMS OVER PINEVILLE...MOVING SOUTHWEST AT
25 MPH.

THE CLUSTER OF STRONG THUNDERSTORMS WILL AFFECT AREAS IN AND
AROUND...ALEXANDRIA...ALEXANDRIA INTERNATIONAL AIRPORT...WOODWORTH...
BOYCE...LENA AND GARDNER.

THE PRIMARY THREATS FROM THESE STORMS ARE FREQUENT LIGHTNING...PEA TO
NICKEL SIZE HAIL...AND WIND GUSTS TO NEAR 50 MPH...WHICH COULD DOWN
TREE LIMBS AND BLOW AROUND UNSECURED SMALL OBJECTS. SEEK SHELTER IN A
SAFE HOME OR BUILDING UNTIL THESE STORMS HAVE PASSED.

THESE STORMS COULD PRODUCE RAINFALL AMOUNTS OF ONE TO TWO INCHES IN A
SHORT PERIOD OF TIME...RESULTING IN PONDING OF WATER AROUND LOW LYING
ROADWAYS. REMEMBER...DO NOT DRIVE YOUR VEHICLE INTO WATER COVERED
ROADWAYS. THE DEPTH MAY BE TOO GREAT TO ALLOW A SAFE CROSSING.

LAT...LON 3150 9268 3146 9270 3144 9268 3141 9268
      3140 9266 3145 9237 3128 9225 3098 9267
      3118 9283 3125 9283 3129 9288 3132 9288
      3133 9295 3135 9297 3151 9271

24

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 25, 2:50 PM CDTSpecial Weather StatementLCHRapides40 min
Aug 25, 2:56 PM CDTSpecial Marine WarningLCH49 min
Aug 25, 3:05 PM CDTSevere Thunderstorm WarningLCHCalcasieu, Jefferson Davis40 min
Aug 25, 3:36 PM CDTSpecial Weather StatementLCHCalcasieu39 min
Aug 25, 3:39 PM CDTSpecial Weather StatementLCHRapides51 min
Aug 25, 3:54 PM CDTSpecial Weather StatementLCHSaint Martin66 min
Aug 25, 4:24 PM CDTSpecial Weather StatementLCHCameron66 min
Aug 25, 4:34 PM CDTSpecial Weather StatementLCHAcadia56 min
Aug 25, 4:48 PM CDTSpecial Weather StatementLCHVermilion57 min
Aug 25, 4:56 PM CDTSevere Thunderstorm WarningLCHAcadia, Lafayette, Vermilion64 min
Aug 25, 5:22 PM CDTSpecial Weather StatementLCHCalcasieu53 min
Aug 25, 5:25 PM CDTSpecial Weather StatementLCHBeauregard65 min
Aug 25, 5:40 PM CDTSpecial Weather StatementLCHVermilion65 min
Aug 25, 5:53 PM CDTSpecial Weather StatementLCHCalcasieu67 min
Aug 25, 6:06 PM CDTSpecial Marine WarningLCH84 min
Aug 25, 6:13 PM CDTSpecial Weather StatementLCHOrange47 min
Aug 25, 6:46 PM CDTSpecial Weather StatementLCHHardin, Jefferson74 min
Aug 25, 6:51 PM CDTSpecial Weather StatementLCHTyler69 min

Nearby

Severe Thunderstorm Warnings in Louisiana, 2014Every severe thunderstorm warning in 2014

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.