Alert archive / Louisiana / Special Weather Statements in 2012
Special Weather Statement, NWS Lake Charles, LA
NWS Lake Charles, LA issued this special weather statement at Apr 11, 2012, 6:57 PM CDT for Iberia Parish, Louisiana. It was in force for 48 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 11, 2012, 6:57 PM CDT (23:57 UTC)
- Expired
- Apr 11, 2012, 7:45 PM CDT
- In force
- 48 min
- Issued by
- NWS Lake Charles, LA
County Iberia Parish, LA
The radar
The Lake Charles radar (KLCH), 131 km from the middle of the area, began a volume at 23:58 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
Slidell Radar S, LA (KSIL), launched 12:00Z, 12.0 hours before the alert went out and 218 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
- 638 J/kg
- Mixed-layer CIN
- -44 J/kg
- Mixed-layer LCL
- 1019 m above ground
- 0-6 km bulk shear
- 21 kt
- 0-1 km storm-relative helicity
- 38 m²/s²
- 0-3 km storm-relative helicity
- 25 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
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</html>What forecasters said that day
The local office's own words before this special weather statement 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 special weather statement went out at Apr 11, 6:04 PM CDT, 53 minutes earlier.
Area forecast discussion, Apr 11, 6:04 PM CDT, 53 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE LAKE CHARLES LA 604 PM CDT WED APR 11 2012 .AVIATION...THROUGH THE NEXT FEW HRS A FEW SHRA AND TSRA WILL BE IN VC OF KBPT, KLCH, KLFT, AND KARA. AN OUTFLOW BOUNDARY WILL ALSO SHIFT WINDS AT KLCH AROUND 7 PM CDT. AFTER SUNSET STORMS WILL DIMINISH. PATCHY AND THIN GROUND FOG MAY OCCUR IN THE MORNING, BUT WILL BE MOST LIKELY AROUND KLCH AND KBPT. MOSTLY VFR CONDITIONS ARE EXPECTED AGAIN THU. && .PREV DISCUSSION... /ISSUED 322 PM CDT WED APR 11 2012/ SYNOPSIS...CONVECTION HAS HAD A SLOW START THIS AFTERNOON BUT APPEARS TO FINALLY GETTING GOING OVER CENTRAL LOUISIANA. VISIBLE IMAGERY SHOWING CU FIELD BECOMING ENHANCED OVER THE AREA AS WELL SINCE TEMPERATURES HAVE ACHIEVED TRIGGER LEVELS. THE BACKDOOR COLD FRONT IS TRUNDLING ITS WAY SOUTHWEST AND SHOULD ALSO LEND SOME SURFACE CONVERGENCE IN AN ASSIST TO THE EXPECTED SHOWER ACTIVITY. SHORT TERM...ANY SHOWERS AND THUNDERSTORMS THAT DO GET A LATE START SHOULD SEE AN EARLY DIMISE AS THE UPPER LEVEL WIND FIELD BECOMES UNFAVORABLE, THETA TROFFING TAKES HOLD, AND RIDGING BUILDS AT MID LEVELS FROM THE WEST. ONE MORE DAY OF SCATTERED ACTIVITY ON THURSDAY THANKS TO MOISTURE POOLING AND EASTERLY FLOW. BEST CHANCES SHOULD BE TO THE EAST WHERE FCST K-INDICES PUNCH THROUGH THE 30 MARK WHILE PRECIP WATER REMAINS WELL ABOVE AN INCH. WESTERN ZONES WILL SEE MARKEDLY LESS ACTIVITY AS RIDGING BUILDS IN FROM THAT DIRECTION. LONG TERM...DRY THROUGH THE END OF THE WEEK WITH RIDGING AT ALL LEVELS. THE HIGH AMPLITUDE PATTERN CONTINUES EARLY NEXT WEEK WITH A LARGE AND DEEP UPPER TROF DIGGING INTO THE WESTERN STATES FORCING A SLOW MOVING PACIFIC COLD FRONT WHICH WILL BE HELD IN CHECK BY THE RIDGE OVER THE SOUTHEASTERN STATES. THERE IS STILL UNCERTAINTY OF THE INITIATION OF NEXT WEEK'S RAIN EVENT OWING TO THE SLOW MOVEMENT. LATEST GUIDANCE SUGGESTS TUESDAY NOW. THE CLOSED LOW WILL BE IN PHASE WITH A PASSING TROF ACROSS THE CANADIAN PRAIRIES WHICH LOOKS TO ALLOW THE LOW TO KICK OUT TO THE NORTHEAST. SO A LATER START AND AN EARLIER END TO NEXT WEEKS PRECIP, POSSIBLY AS EARLY AS WEDNESDAY WITH THE H5 TROF PASSAGE. && .PRELIMINARY POINT TEMPS/POPS... KLCH 61 80 65 81 68 / 10 30 10 10 10 KBPT 63 81 68 81 70 / 10 10 0 10 10 KAEX 58 76 61 82 66 / 10 40 10 10 10 KLFT 60 77 63 80 67 / 10 40 10 10 10 && .LCH WATCHES/WARNINGS/ADVISORIES... LA...NONE. TX...NONE. GM...NONE. &&
Hazardous weather outlook, Apr 11, 3:49 AM CDT, 15 hours 8 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE LAKE CHARLES LA 349 AM CDT WED APR 11 2012 GMZ430-432-435-450-452-455-470-472-475-LAZ027>033-041>045-052>055- 073-074-TXZ180-201-215-216-259>262-120900- 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- 349 AM CDT WED APR 11 2012 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 SCATTERED SHOWERS AND THUNDERSTORMS TODAY. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY A COLD FRONT IS EXPECTED TO MOVE DOWN AND THROUGH THE REGION EARLY NEXT WEEK WITH SHOWERS AND THUNDERSTORMS PROCEEDING THE FRONT.NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED.
In the hours before
Special weather statement, Apr 11, 4:47 PM CDT, 2 hours 10 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE LAKE CHARLES LA 447 PM CDT WED APR 11 2012 LAZ032-112215- EVANGELINE LA- 447 PM CDT WED APR 11 2012 ...SIGNIFICANT WEATHER ADVISORY FOR EVANGELINE PARISH UNTIL 515 PM CDT... AT 444 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A STRONG THUNDERSTORM 4 MILES SOUTHEAST OF BEAVER...MOVING SOUTHEAST AT 5 MPH. * THE STRONG THUNDERSTORM WILL BE NEAR... PINE PRAIRIE BY 455 PM... REDDELL BY 515 PM... THE PRIMARY THREATS FROM THIS STORM ARE FREQUENT LIGHTNING AND PEA TO NICKEL SIZE HAIL. SEEK SHELTER IN A SAFE HOME OR BUILDING UNTIL THIS STORM HAS PASSED. LAT...LON 3070 9234 3062 9259 3081 9259 3087 9246 TINGLER
Special weather statement, Apr 11, 4:54 PM CDT, 2 hours 3 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE LAKE CHARLES LA 454 PM CDT WED APR 11 2012 LAZ033-043-112230- ST. LANDRY LA-ACADIA LA- 454 PM CDT WED APR 11 2012 ...SIGNIFICANT WEATHER ADVISORY FOR ST. LANDRY AND ACADIA PARISHES UNTIL 530 PM CDT... AT 453 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A STRONG THUNDERSTORM OVER MOWATA...MOVING SOUTHEAST AT 15 MPH. * THE STRONG THUNDERSTORM WILL BE NEAR... IOTA BY 500 PM... MAXIE BY 510 PM... CROWLEY BY 530 PM... THE PRIMARY THREATS FROM THIS STORM ARE FREQUENT LIGHTNING AND PEA TO NICKEL SIZE HAIL. SEEK SHELTER IN A SAFE HOME OR BUILDING UNTIL THIS STORM HAS PASSED. LAT...LON 3026 9223 3018 9248 3046 9254 3051 9238 TINGLER
Special weather statement, Apr 11, 6:11 PM CDT, 46 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE LAKE CHARLES LA 611 PM CDT WED APR 11 2012 LAZ053>055-112345- LOWER ST. MARTIN LA-IBERIA LA-ST. MARY LA- 611 PM CDT WED APR 11 2012 ...SIGNIFICANT WEATHER ADVISORY FOR ST. MARY...IBERIA AND ST. MARTIN PARISHES UNTIL 645 PM CDT... AT 607 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A STRONG THUNDERSTORM ALONG A LINE EXTENDING FROM 3 MILES NORTHWEST OF LYDIA TO 11 MILES EAST OF CHARENTON...NEARLY STATIONARY. * THE STRONG THUNDERSTORM WILL BE NEAR... NEW IBERIA AND LAKE FAUSSE POINTE BY 645 PM... THE PRIMARY THREATS FROM THESE STORMS ARE FREQUENT LIGHTNING, VERY HEAVY RAINFALL, AND PEA SIZE HAIL. SEEK SHELTER IN A SAFE HOME OR BUILDING UNTIL THESE STORMS HAVE PASSED. LAT...LON 3004 9186 2997 9128 2978 9134 2989 9192 TINGLER
Special weather statement, Apr 11, 6:57 PM CDT, 0 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE LAKE CHARLES LA
657 PM CDT WED APR 11 2012
LAZ052>054-120045-
VERMILION LA-IBERIA LA-ST. MARY LA-
657 PM CDT WED APR 11 2012
...SIGNIFICANT WEATHER ADVISORY FOR VERMILION...ST. MARY AND IBERIA
PARISHES UNTIL 745 PM CDT...
AT 653 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
STRONG THUNDERSTORM ALONG A LINE EXTENDING FROM SORREL TO 5 MILES
SOUTHWEST OF ABBEVILLE...MOVING WEST AT 5 MPH.
* THE STRONG THUNDERSTORM WILL BE NEAR...
GLENCOE BY 730 PM...
AVERY ISLAND BY 740 PM...
HENRY AND ESTHER BY 745 PM...
THE PRIMARY THREAT FROM THESE STORMS IS FREQUENT LIGHTNING AND HEAVY
RAIN. 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 2977 9187 2980 9186 2980 9184 2982 9184
2982 9188 2981 9192 2982 9197 2980 9197
2979 9198 2982 9229 3003 9226 2993 9155
2974 9159
TINGLERThe office that day
Everything else NWS Lake Charles, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 11, 4:47 PM CDT | Special Weather Statement | LCH | Evangeline | 28 min |
| Apr 11, 4:54 PM CDT | Special Weather Statement | LCH | Acadia | 36 min |
| Apr 11, 6:11 PM CDT | Special Weather Statement | LCH | Saint Martin | 34 min |
Nearby
Special Weather Statements in Louisiana, 2012Every special weather statement in 2012
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.