Severe Thunderstorm Warning 57, NWS Lake Charles, LA

456 
WWUS54 KLCH 252030
SVSLCH

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LAKE CHARLES LA
330 PM CDT MON AUG 25 2014

LAC019-053-252045-
/O.CON.KLCH.SV.W.0057.000000T0000Z-140825T2045Z/
CALCASIEU LA-JEFFERSON DAVIS LA-
330 PM CDT MON AUG 25 2014

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 345 PM CDT
FOR JEFFERSON DAVIS AND EAST CENTRAL CALCASIEU PARISHES...

AT 327 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
SEVERE THUNDERSTORM ON RADAR CAPABLE OF PRODUCING QUARTER SIZE
HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS
LOCATED 6 MILES NORTHWEST OF THORNWELL..MOVING SOUTHWEST AT 35 MPH.

THE SEVERE THUNDERSTORM WILL OTHERWISE REMAIN OVER MAINLY RURAL AREAS
OF THE INDICATED PARISHES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS IN EXCESS OF 60 MPH...
DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND HEAVY RAIN. STAY INDOORS...
AWAY FROM WINDOWS.

&&

LAT...LON 3036 9313 3040 9288 3027 9277 3020 9266
      3004 9281 3004 9283
TIME...MOT...LOC 2031Z 043DEG 29KT 3014 9289

$$

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AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LAKE CHARLES LA
100 PM CDT MON AUG 25 2014

.DISCUSSION...
25/18Z TAF ISSUANCE.

&&

.AVIATION...
PREVAILING VFR CONDITIONS NOTED ACRS THE AREA THIS AFTN...WITH SCT
CU AROUND 3-4 KFT AND SCT TO BKN CI SPREADING WEST FM CONVECTION
OVER THE NRN GULF. THE AREA OF STORMS OVER THE GULF IS ASSOCIATED
WITH A SHORTWAVE TRAVELING UNDER THE BASE OF THE UPPER
RIDGE...WITH SCT SHRA/TSRA EXPECTED TO AFFECT THE SRN TAF SITES
THROUGH THE AFTN/EARLY EVE. INCLUDED TEMPO GROUPS AT
LFT/ARA/AEX AFTER 19Z AS DAYTIME HEATING INTERACTS WITH THE UPPER
LVL ENERGY...WITH VC AT LCH AFTER 21Z AND BPT AFTER 23Z. EXPECT
ACTIVITY TO DIMINISH DURING THE EVENING...WITH MAINLY HIGH CLOUDS
AND LT VRBL WINDS LEFTOVER FOR THE REMAINDER OF THE NIGHT.

&&

.PREV DISCUSSION... /ISSUED 1057 AM CDT MON AUG 25 2014/

DISCUSSION...
REGIONAL 88DS SHOW WIDESPREAD RAIN/EMBEDDED THUNDER BEGINNING TO
CROSS SERN LA THIS MORNING...ASSOCIATED WITH THE ERLY WAVE NOTED
OVER THE NERN GULF. THIS PRECIP SHOULD CONTINUE PUSHING WWD
THROUGH THE DAY WHICH INHERITED GRIDS/ZONES ARE HANDLING WELL.
ELSEWHERE JUST VERY MINOR TWEAKS WERE MADE TO THE GRIDS WHICH
SHOULD NOT REQUIRE A MORNING UPDATE.

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PREV DISCUSSION... /ISSUED 656 AM CDT MON AUG 25 2014/

AVIATION...

HIGH PRESSURE RIDGES FROM CENTRAL NEW YORK THROUGH NORTHERN GEORGIA
.ITS OUTER SOUTHERN PERIPHERY MARKED BY A BACKDOOR COLD FRONT
WHICH DRAPES THROUGH CENTRAL FLORIDA AND INTO SOUTHEAST LOUISIANA.

EASTERLY IMPULSES (OR SURGES) ARE PROPAGATING ALONG THE FRONTAL
SURFACE...SETTING OFF SHOWERS AND THUNDERSTORMS.

THE CONVECTIVE ACTIVITY WILL WORK ITS WAY INTO SOUTHWEST LOU SIANA
DURING THE AFTERNOON HOURS.

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PREV DISCUSSION... /ISSUED 426 AM CDT MON AUG 25 2014/

DISCUSSION...A VERY TYPICAL WARM AND MUGGY NIGHT ACROSS THE
FORECAST AREA. RADAR CURRENTLY ABSENT OF ANY PRECIP IN THE
IMMEDIATE AREA...BUT AN ISOLATED AND FORMIDABLE CELL NOW ADVANCING
WEST ACROSS SLIDELLS COASTAL WATERS WITH A MARINE WARNING IN PLACE.
OTHERWISE...SATELLITE IMAGERY SHOWING SOME CIRRUS STREAMING
OVERHEAD ASSOCIATED WITH ONGOING AND PREVIOUS CONVECTION TO OUR
EAST.

TODAY AND TUESDAY...SHOWER AND THUNDERSTORM ACTIVITY IS EXPECTED
TO BE ON THE INCREASE WITH THE APPROACH AND PASSAGE OF AN
EASTERLY WAVE NOW POSITIONED OVER THE EASTERN GULF. AT THIS TIME
TRENDING POPS HIGHER OVER THE SOUTHERN PORTION OF THE REGION WHERE
BETTER LIFT AND MOISTURE WILL BE CONCENTRATED. EXPECTING RAINS TO
DIMINISH EAST TO WEST GOING THROUGH TUESDAY AS FEATURE ADVANCES
THROUGH.

REMAINDER OF FORECAST...WITH CURRENT RIDGING UNABLE TO BECOME
REESTABLISHED WITH PASSAGE OF WAVE...WILL BE MAINTAINING LOW END
RAIN CHANCES OVER THE SOUTHERN PORTION OF THE FORECAST AREA
WEDNESDAY...AND AREA-WIDE THURSDAY. THEN START AN UPWARD TREND FOR
POPS LATE IN THE WEEK AS A DEEP SOUTHERLY FLOW DEVELOPS BETWEEN
SUBTROPICAL HIGH AND APPROACHING MID-CONUS TROF.

MARINE...A LIGHT OFFSHORE FLOW WILL CONTINUE TODAY...TRENDING MORE EASTERLY
FOR MID-WEEK AND ONSHORE FOR THE LATTER PART OF THE WEEK. RAIN
CHANCES WILL BE ON THE INCREASE LATER TODAY AND CONTINUING INTO
TUESDAY WITH THE APPROACH AND PASSAGE OF AN EASTERLY WAVE.

&&

.PRELIMINARY POINT TEMPS/POPS...
KLCH  94  75  92  74 /  40  40  50  10
KBPT  96  77  92  77 /  20  50  50  20
KAEX  95  74  92  72 /  40  40  30  10
KLFT  93  76  92  75 /  50  50  40  10

&&

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

&&

PUBLIC/MARINE...04
AVIATION...04

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.

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

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