Alert archive / Louisiana / Special Weather Statements in 2011
Special Weather Statement, NWS Lake Charles, LA
NWS Lake Charles, LA issued this special weather statement at Jul 23, 2011, 4:45 PM CDT for Evangeline Parish, Louisiana. It was in force for 30 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
- Jul 23, 2011, 4:45 PM CDT (21:45 UTC)
- Expired
- Jul 23, 2011, 5:15 PM CDT
- In force
- 30 min
- Issued by
- NWS Lake Charles, LA
County Evangeline Parish, LA
The nearest sounding before it
Lake Charles Mun, LA (KLCH), launched 12:00Z, 9.8 hours before the alert went out and 125 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
- 3372 J/kg
- Mixed-layer CIN
- -1 J/kg
- Mixed-layer LCL
- 620 m above ground
- 0-6 km bulk shear
- 11 kt
- 0-1 km storm-relative helicity
- -51 m²/s²
- 0-3 km storm-relative helicity
- -23 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 Jul 23, 3:20 PM CDT, 1 hour 25 minutes earlier.
Area forecast discussion, Jul 23, 3:20 PM CDT, 1 hour 25 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE LAKE CHARLES LA 320 PM CDT SAT JUL 23 2011 .DISCUSSION... WITH A VERY MOIST AND UNSTABLE ATMOSPHERE IN PLACE...AND TRIGGER TEMPERATURES EXCEEDED...SCATTERED SHOWERS AND THUNDERSTORMS ARE RE-DEVELOPING OVER THE LOUISIANA AREA OF RESPONSIBILITY. MEANWHILE...A LITTLE DRIER AIR IN THE MID LEVELS AND NVA AHEAD OF VORT MAX IN SOUTH CENTRAL LOUISIANA...IS HELPING KEEP CONVECTION OVER SOUTHEAST TEXAS AT MINIMUM. FREQUENT LIGHTNING AND STRONG DOWN BURST WINDS WILL BE POSSIBLE WITH THE STORMS THIS AFTERNOON. ACTIVITY IS EXPECTED TO DIMINISH THIS EVENING WITH THE LOSS OF DAYTIME HEATING. THE WEAK VORT MAX IS EXPECTED TO MOVE SLOWLY WESTWARD ACROSS SOUTHWEST LOUISIANA TONIGHT. NEAR AND TO THE EAST OF THIS SYSTEM...SCATTERED SHOWERS AND A FEW THUNDERSTORMS WILL DEVELOP DURING THE LATE NIGHT. THEREFORE. WILL RE-INTRODUCE SLIGHT CHANCE AND CHANCE POPS FOR THE SOUTHERN ZONES AND COASTAL WATERS BEFORE SUNRISE. THIS WEAK UPPER LEVEL DISTURBANCE/VORT MAX IS EXPECTED TO WEAKEN AS IT MOVES INTO SOUTHEAST TEXAS ON SUNDAY. AGAIN THE BEST CHANCE FOR SCATTERED SHOWERS AND THUNDERSTORMS WILL BE OVER THE EASTERN ZONES WHERE THE BEST MOISTURE WILL BE AND LESS INFLUENCE OF THE UPPER LEVEL RIDGE WILL BE FOUND. DURING THE REMAINDER OF THE FORECAST PERIOD...THE AREA WILL SEE A BATTLE BETWEEN THE UPPER LEVEL RIDGE TO THE NORTH EXPANDING INTO THE REGION AND TRAPPED HIGH MOISTURE VALUES WITH PWAT OVER 2 INCHES. SHOULD BEGIN TO SEE A LITTLE LESS ACTIVITY FOR EARLY NEXT WEEK INTO THE MIDDLE PART OF THE WEEK AS SOME DRIER AIR IN THE MID LEVELS BEGINS TO FILTER IN...WITH LESS ACTIVITY OVER SOUTHEAST TEXAS AND THE BEST CHANCE FOR RAIN OVER SOUTH CENTRAL LOUISIANA. CONDITIONS AWAY FROM ANY CONVECTION OR RAIN COOLER OUTFLOW BOUNDARIES WILL CONTINUE TO BE HOT AND MUGGY WITH AFTERNOON HEAT INDEX READINGS AROUND 105F. RUA && .MARINE... SURFACE HIGH PRESSURE IS EXPECTED TO CONTINUE TO RIDGE ACROSS THE NORTHERN GULF OF MEXICO DURING THE FORECAST PERIOD. THIS WILL ALLOW LIGHT TO MODERATE SOUTHERLY WINDS TO PERSIST. AS IS TYPICAL IN THIS SUMMERTIME PATTERN...THE HIGHER WINDS WILL BE AT NIGHT OVER THE OFFSHORE WATERS...AND DURING THE AFTERNOON FOR THE COASTAL LAKES AND BAYS. SCATTERED LATE NIGHT AND EARLY MORNING SHOWERS AND THUNDERSTORMS ARE EXPECTED TO REDEVELOP TONIGHT AS AN UPPER LEVEL DISTURBANCE MOVES ACROSS SOUTHWEST LOUISIANA. A SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS WILL THEN CONTINUE THROUGH THE REMAINDER OF THE FORECAST AS A MOIST AND UNSTABLE AIR MASS REMAINS IN PLACE. RUA && .PRELIMINARY POINT TEMPS/POPS... KLCH 78 93 78 93 77 / 20 40 20 30 20 KBPT 79 95 78 95 78 / 20 30 20 20 20 KAEX 76 96 75 97 75 / 10 40 20 30 20 KLFT 76 92 76 92 76 / 20 40 20 30 20 && .LCH WATCHES/WARNINGS/ADVISORIES... LA...NONE. TX...NONE. GM...NONE. &&
Hazardous weather outlook, Jul 23, 3:47 AM CDT, 12 hours 58 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE LAKE CHARLES LA 347 AM CDT SAT JUL 23 2011 LAZ027>033-041>045-051>055-TXZ180>182-201-215-216-240900- VERNON-RAPIDES-AVOYELLES-BEAUREGARD-ALLEN-EVANGELINE-ST. LANDRY- CALCASIEU-JEFFERSON DAVIS-ACADIA-LAFAYETTE-UPPER ST. MARTIN- CAMERON-VERMILION-IBERIA-ST. MARY-LOWER ST. MARTIN-TYLER-JASPER- NEWTON-HARDIN-JEFFERSON-ORANGE- 347 AM CDT SAT JUL 23 2011 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL LOUISIANA...SOUTH CENTRAL LOUISIANA...SOUTHWEST LOUISIANA...WEST CENTRAL LOUISIANA AND SOUTHEAST TEXAS. .DAY ONE...TODAY AND TONIGHT EARLY MORNING SCATTERED SHOWERS AND THUNDERSTORMS IN THE NEARSHORE WATERS WILL SPREAD NORTH TO THE I-10 CORRIDOR BEFORE FINDING MORE STABLE CONDITIONS. AFTERNOON CONVECTION WILL BECOME MORE FAVORABLE AS AFTERNOON HEATING AND ABUNDANT MOISTURE ACROSS LOUISIANA TRIGGER BETTER DISTRIBUTION OF RAINFALL. WHILE GUSTY WINDS...FREQUENT LIGHTNING AND BURSTS OF HEAVY RAIN IS POSSIBLE WITH THE STRONGER STORMS...NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY ISOLATED TO SCATTERED SHOWERS AND THUNDERSTORMS WILL BE POSSIBLE EACH AFTERNOON WITH RAIN CHANCES DIMINISHING TOWARDS THE BEGINNING OF NEXT WEEK. ANY OF THESE STORMS HAVE THE POTENTIAL TO PRODUCE BRIEF HEAVY RAINFALL AND FREQUENT LIGHTNING BUT NO SEVERE WEATHER IS EXPECTED AT THIS TIME. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED. GMZ430-432-435-450-452-455-470-472-475-240900- 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 EXTENDING FROM 20 NM TO 60 NM- WATERS FROM INTRACOASTAL CITY, LA TO CAMERON, LA EXTENDING FROM 20 NM TO 60 NM- WATERS FROM LOWER ATCHAFALAYA RIVER TO INTRACOASTAL CITY, LA EXTENDING FROM 20 NM TO 60 NM- 347 AM CDT SAT JUL 23 2011 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF THE NORTHWEST GULF OF MEXICO. .DAY ONE...TODAY AND TONIGHT SHOWERS AND THUNDERSTORMS WILL BE POSSIBLE ACROSS THE NORTHERN GULF...MAINLY THIS MORNING AND AGAIN LATE TONIGHT. THESE THUNDERSTORMS WILL BE CAPABLE OF VERY HEAVY RAINS REDUCING VISIBILITIES TO LESS THAN 3 MILES AT TIMES ALONG WITH GUSTY WINDS THAT COULD CAUSE LOCALLY INCREASED SEAS. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED.
In the hours before
Special weather statement, Jul 23, 3:13 PM CDT, 1 hour 32 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE LAKE CHARLES LA 313 PM CDT SAT JUL 23 2011 LAZ027-028-030-031-232115- RAPIDES LA-BEAUREGARD LA-ALLEN LA-VERNON LA- 313 PM CDT SAT JUL 23 2011 ...SIGNIFICANT WEATHER ADVISORY FOR RAPIDES...BEAUREGARD...ALLEN AND VERNON PARISHES UNTIL 415 PM CDT... AT 309 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A STRONG THUNDERSTORM 6 MILES SOUTHWEST OF GRANT...MOVING NORTHEAST AT 15 MPH. THE STRONG THUNDERSTORM WILL AFFECT AREAS IN AND AROUND...MITTIE... GRANT...SUGARTOWN...CRAVENS...PITKIN AND FULLERTON. THE PRIMARY THREATS FROM THIS STORM ARE FREQUENT LIGHTNING AND WIND GUSTS TO NEAR 40 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 3104 9301 3079 9268 3061 9300 3073 9316 MM
Special weather statement, Jul 23, 4:00 PM CDT, 45 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE LAKE CHARLES LA
400 PM CDT SAT JUL 23 2011
LAZ028-031-232145-
RAPIDES LA-ALLEN LA-
400 PM CDT SAT JUL 23 2011
...SIGNIFICANT WEATHER ADVISORY FOR RAPIDES AND ALLEN PARISHES UNTIL
445 PM CDT...
AT 359 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
STRONG THUNDERSTORM 8 MILES WEST OF GLENMORA...MOVING NORTHEAST AT 15
MPH.
THE STRONG THUNDERSTORM WILL AFFECT AREAS IN AND AROUND...
CALCASIEU...HINESTON...GLENMORA...MCNARY...ELMER AND OTIS.
THE PRIMARY THREATS FROM THIS STORM ARE FREQUENT LIGHTNING AND WIND
GUSTS TO NEAR 40 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 3102 9228 3099 9237 3100 9238 3099 9241
3098 9241 3089 9270 3100 9282 3103 9283
3135 9263
MMSpecial weather statement, Jul 23, 4:45 PM CDT, 0 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE LAKE CHARLES LA 445 PM CDT SAT JUL 23 2011 LAZ028-029-032-033-232215- ST. LANDRY LA-RAPIDES LA-EVANGELINE LA-AVOYELLES LA- 445 PM CDT SAT JUL 23 2011 ...SIGNIFICANT WEATHER ADVISORY FOR ST. LANDRY...RAPIDES...EVANGELINE AND AVOYELLES PARISHES UNTIL 515 PM CDT... AT 443 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A STRONG THUNDERSTORM 3 MILES SOUTHWEST OF CHENEYVILLE...MOVING NORTHEAST AT 10 MPH. * THE STRONG THUNDERSTORM WILL BE NEAR... CHENEYVILLE BY 455 PM... BUNKIE BY 515 PM... THE PRIMARY THREATS FROM THIS STORM ARE FREQUENT LIGHTNING...PEA TO NICKEL SIZE HAIL...AND WIND GUSTS TO NEAR 40 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 3113 9229 3086 9209 3079 9251 3098 9259 24
The office that day
Everything else NWS Lake Charles, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 23, 3:13 PM CDT | Special Weather Statement | LCH | Allen | 62 min |
| Jul 23, 4:00 PM CDT | Special Weather Statement | LCH | Rapides | 45 min |
| Jul 23, 5:13 PM CDT | Special Weather Statement | LCH | Rapides | 32 min |
| Jul 23, 5:17 PM CDT | Special Weather Statement | LCH | Acadia | 43 min |
| Jul 23, 5:22 PM CDT | Severe Thunderstorm Warning | LCH | Rapides | 31 min |
Nearby
Special Weather Statements in Louisiana, 2011Every special weather statement in 2011
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.