Alert archive / Louisiana / Special Weather Statements in 2016
Special Weather Statement, NWS Lake Charles, LA
NWS Lake Charles, LA issued this special weather statement at Aug 7, 2016, 5:10 PM CDT for Acadia Parish, Louisiana. It was in force for 65 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
- Aug 7, 2016, 5:10 PM CDT (22:10 UTC)
- Expired
- Aug 7, 2016, 6:15 PM CDT
- In force
- 65 min
- Issued by
- NWS Lake Charles, LA
County Acadia Parish, LA
The radar
The Lake Charles radar (KLCH), 72 km from the middle of the area, began a volume at 22:12 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, 10.2 hours before the alert went out and 70 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
- 2083 J/kg
- Mixed-layer CIN
- -45 J/kg
- Mixed-layer LCL
- 918 m above ground
- 0-6 km bulk shear
- 8 kt
- 0-1 km storm-relative helicity
- -41 m²/s²
- 0-3 km storm-relative helicity
- 3 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
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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 Aug 7, 3:09 PM CDT, 2 hours 1 minute earlier.
Area forecast discussion, Aug 7, 3:09 PM CDT, 2 hours 1 minute before
Area Forecast Discussion National Weather Service Lake Charles LA 309 PM CDT SUN AUG 7 2016 .SYNOPSIS... The forecast area this afternoon is between a weakening upper level ridge centered over west Texas and a building upper level trough from the lower southeast U.S. into the northeast Gulf of Mexico. Abundant Gulf moisture remains over the forecast area. The 07/12Z upper air sounding from KLCH showed a precipitable water value around 2.2 inches, and latest GPS-MET data from 07/18Z had PWAT values remaining around 2.2 inches across the forecast area. With convective temperatures in the low to mid 90s being met, scattered showers and thunderstorms are forming, with the best focus along a settle low level boundary/convergence zone from roughly Toledo Bend to Lower Atchafalaya Basin. VAD wind profiles show north winds above 5k feet, so activity that forms will move slowly to the south. Frequent cloud to ground lightning, high rainfall rates in a short period of time, and gusty winds around 35 to 40 mph, look to be the main hazards from the storms this afternoon. Rua && .DISCUSSION... With the late start to convection, and guidance showing some short wave energy rotating around the ridge into the forecast area tonight, showers and thunderstorms may take a little longer to diminish, therefore will hold on to scattered pops for most of the forecast area until around 04Z or 11 pm local, then activity over land should diminish with nocturnal activity redeveloping over the Gulf late in the overnight. Through the week, the upper level ridge over Texas will continue to weaken, and the southeast U.S. upper level trough will continue to expand to the west. This will leave a weakness in the subtropical ridge over the forecast area. Abundant Gulf moisture will continue to be trapped over the region, therefore, decent chance of scattered showers and thunderstorms each day, with the best chance during the late morning through the afternoon. Main upper level trough axis is expected to stay east of the forecast area, and this should keep the best chance for excessive rainfall amounts also to the east over the Gulf South into the Florida Panhandle. Over the weekend, subtropical ridge begins to strengthen and build westward from off the Southeast U.S. coast. In this scenario, the remnant upper level trough/shear axis will get pushed into the immediate region and forecast area...keeping better than normal rain chances in place. Latest GFS run actually keeps more of a closed upper level low in place rather than a weaker shear axis like the ECMWF. If the GFS does verify, then a better chance of heavy rainfall and equal chances of rainfall through the day and night may occur. However, that is still a week out. Rua && .MARINE... Mainly a weak pressure pattern will prevail for the next few days over the coastal waters. Therefore, mainly light winds and low seas will also prevail. A weakening upper level high and abundant Gulf moisture will allow for decent chances for showers and thunderstorms each day this week. Winds and seas will be locally higher near the storms. Rua && .PRELIMINARY POINT TEMPS/POPS... AEX 76 95 75 95 / 30 40 20 40 LCH 77 95 78 94 / 20 40 20 50 LFT 78 93 77 93 / 30 50 20 50 BPT 78 96 77 96 / 20 30 20 40 && .LCH Watches/Warnings/Advisories... LA...None. TX...None. GM...None. && PUBLIC...07
Hazardous weather outlook, Aug 7, 5:48 AM CDT, 11 hours 22 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE LAKE CHARLES LA 548 AM CDT SUN AUG 7 2016 LAZ027>033-041>045-052>055-073-074-TXZ180-201-215-216-259>262- 081100- 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- 548 AM CDT SUN AUG 7 2016 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 ISOLATED TO SCATTERED MAINLY AFTERNOON SHOWERS AND THUNDERSTORMS ARE EXPECTED TODAY. NO SEVERE WEATHER IS EXPECTED...BUT STRONGER THUNDERSTORMS WILL BE CAPABLE OF FREQUENT LIGHTNING...GUSTY WINDS...AND LOCALLY HEAVY RAINFALL. PEAK HEAT INDEX VALUES WILL AVERAGE AROUND 105 DEGREES TODAY. OUTDOOR ACTIVITIES SHOULD BE LIMITED DURING THE PEAK HEAT OF THE DAY. THOSE WHO MUST WORK OUTSIDE SHOULD DRINK PLENTY OF WATER AND TAKE FREQUENT BREAKS IN SHADED AREAS OR IN AIR CONDITIONED PLACES. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY ISOLATED TO SCATTERED SHOWERS AND THUNDERSTORMS CAN BE EXPECTED THROUGH THE UPCOMING WEEK. NO SEVERE THUNDERSTORMS ARE EXPECTED...BUT STRONGER STORMS WILL BE CAPABLE OF PRODUCING GUSTY WINDS...LOCALLY HEAVY RAINFALL...AND FREQUENT CLOUD TO GROUND LIGHTNING. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED. GMZ430-432-435-450-452-455-470-472-475-081100- 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- 548 AM CDT SUN AUG 7 2016 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF GULF OF MEXICO. .DAY ONE...TODAY AND TONIGHT ISOLATED SHOWERS OR THUNDERSTORMS WILL BE POSSIBLE. NO SEVERE THUNDERSTORMS ARE EXPECTED. WINDS AND SEAS WILL BE LOCALLY HIGHER NEAR THE STORMS...ALONG WITH FREQUENT CLOUD TO WATER LIGHTNING. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY ISOLATED TO SCATTERED SHOWERS AND THUNDERSTORMS CAN BE EXPECTED MAINLY FROM LATE NIGHT INTO EARLY MORNING...AND DURING THE DAYTIME NEAR SHORE AND FOR THE COASTAL LAKES AND BAYS. NO SEVERE THUNDERSTORMS ARE EXPECTED...BUT STRONGER THUNDERSTORMS WILL BE CAPABLE OF PRODUCING GUSTY WINDS...FREQUENT CLOUD TO WATER LIGHTNING AND HEAVY DOWNPOURS REDUCING VISIBILITIES TO NEAR ONE MILE. LOCALLY HIGHER WINDS AND SEAS CAN ALSO BE EXPECTED NEAR STORMS. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED. 13
In the hours before
Special weather statement, Aug 7, 4:23 PM CDT, 47 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE LAKE CHARLES LA 423 PM CDT SUN AUG 7 2016 LAZ043-044-052-072230- ACADIA-VERMILION-LAFAYETTE- 423 PM CDT SUN AUG 7 2016 ...AN AREA OF STRONG THUNDERSTORMS WILL AFFECT NORTHEASTERN VERMILION...SOUTHEASTERN ACADIA AND SOUTHWESTERN LAFAYETTE PARISHES... AT 422 PM CDT...STRONG THUNDERSTORMS WERE CLUSTERED OVER RIDGE...OR 7 MILES SOUTHEAST OF RAYNE...MOVING SOUTHWEST AT 15 MPH. WINDS IN EXCESS OF 30 MPH AND PEA SIZE HAIL ARE POSSIBLE WITH THIS STORM. LOCATIONS IMPACTED INCLUDE... LAFAYETTE...CROWLEY...ABBEVILLE...RAYNE...KAPLAN...DUSON...MAURICE... BRANCH...MEAUX...RIDGE...INDIAN BAYOU...LYONS POINT AND MILTON. FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM. LIGHTNING CAN STRIKE 10 MILES AWAY FROM A THUNDERSTORM. SEEK A SAFE SHELTER INSIDE A BUILDING OR VEHICLE. LAT...LON 3036 9228 3018 9205 2995 9208 3004 9247 TIME...MOT...LOC 2122Z 032DEG 14KT 3015 9218 K. KUYPER
Special weather statement, Aug 7, 5:10 PM CDT, 0 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE LAKE CHARLES LA
510 PM CDT SUN AUG 7 2016
LAZ042-043-052-072315-
JEFFERSON DAVIS-ACADIA-VERMILION-
510 PM CDT SUN AUG 7 2016
...A LINE OF STRONG THUNDERSTORMS WILL AFFECT NORTH CENTRAL
VERMILION...NORTHEASTERN JEFFERSON DAVIS AND WESTERN ACADIA
PARISHES...
AT 509 PM CDT...RADAR INDICATED STRONG THUNDERSTORMS WERE LOCATED
ALONG A LINE EXTENDING FROM NEAR MOWATA TO NEAR KAPLAN. MOVEMENT WAS
SOUTHWEST AT 20 MPH.
WIND GUSTS UP TO 50 MPH AND HALF INCH HAIL ARE POSSIBLE WITH THESE
STORMS.
LOCATIONS IMPACTED INCLUDE...
CROWLEY...JENNINGS...KAPLAN...IOTA...GUEYDAN...MERMENTAU...
EVANGELINE...MORSE...RICEVILLE...WRIGHT...MAXIE...EGAN...
LYONS POINT...ESTHERWOOD...HATHAWAY AND MIDLAND.
FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM.
LIGHTNING CAN STRIKE 10 MILES AWAY FROM A THUNDERSTORM. SEEK A SAFE
SHELTER INSIDE A BUILDING OR VEHICLE.
LAT...LON 2984 9245 3045 9277 3047 9255 3040 9244
3000 9218
TIME...MOT...LOC 2209Z 055DEG 19KT 3037 9244 3001 9224
K. KUYPERThe office that day
Everything else NWS Lake Charles, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 6, 8:12 PM CDT | Special Weather Statement | LCH | Acadia | 48 min |
| Aug 6, 8:26 PM CDT | Special Weather Statement | LCH | Acadia | 49 min |
| Aug 6, 10:18 PM CDT | Special Weather Statement | LCH | Saint Martin | 42 min |
| Aug 7, 2:36 PM CDT | Special Marine Warning | LCH | 39 min | |
| Aug 7, 3:11 PM CDT | Special Marine Warning | LCH | 49 min | |
| Aug 7, 4:23 PM CDT | Special Weather Statement | LCH | Lafayette | 67 min |
| Aug 7, 6:27 PM CDT | Special Weather Statement | LCH | Cameron | 48 min |
| Aug 6, 9:10 PM CDT | Special Weather Statement | LCH | Newton | 50 min |
Nearby
Special Weather Statements in Louisiana, 2016Every special weather statement in 2016
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.