Alert archive / Louisiana / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 107, NWS Lake Charles, LA

November 17, 20154 parishes in Louisiana

NWS Lake Charles, LA issued this severe thunderstorm warning at Nov 17, 2015, 6:08 PM CST for 4 parishes in Louisiana. It was in force for 37 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: Nov 17, 2015, 6:08 PM CST (00:08 UTC)
Expired: Nov 17, 2015, 6:45 PM CST
In force: 37 min
Issued by: NWS Lake Charles, LA
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Avoyelles Parish, LA, Evangeline Parish, LA, Rapides Parish, LA, Saint Landry Parish, LA

The radar

The Ft Polk radar (KPOE), 76 km from the middle of the area, began a volume at 00:10 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Nov 17, 3:33 PM CST	Tornado Watch	SPC	4 hr

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 00:00Z, 0.1 hours before the alert went out and 253 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 684 J/kg
Mixed-layer CIN: -3 J/kg
Mixed-layer LCL: 535 m above ground
0-6 km bulk shear: 56 kt
0-1 km storm-relative helicity: 388 m²/s²
0-3 km storm-relative helicity: 479 m²/s²
Significant tornado parameter: 1.7
Supercell composite: 7.0

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 Nov 17, 5:39 PM CST, 29 minutes earlier.

Area forecast discussion, Nov 17, 5:39 PM CST, 29 minutes before

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Hazardous weather outlook, Nov 17, 5:41 AM CST, 12 hours 27 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE LAKE CHARLES LA
541 AM CST TUE NOV 17 2015

GMZ430-432-435-LAZ027>033-041>045-052>055-073-074-TXZ180-201-215-
216-259>262-181145-
SABINE LAKE-CALCASIEU LAKE-VERMILION BAY-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-
541 AM CST TUE NOV 17 2015

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

.DAY ONE...TODAY AND TONIGHT

STRONG TO SEVERE THUNDERSTORMS IN THE FORM OF LINES WILL BE MOVING
THROUGH THE AREA TODAY AND TONIGHT IN ADVANCE OF A COLD FRONT. A
FEW TORNADOES WILL ALSO BE POSSIBLE. THE STORM PREDICTION CENTER
INCLUDES CENTRAL LOUISIANA WITHIN AN AREA FOR AN ENHANCED RISK FOR
SEVERE TSTMS. THE REMAINDER OF THE AREA IS WITHIN A SLIGHT RISK
FOR SEVERE TSTMS...LINGERING INTO THE NIGHT.

A WIND ADVISORY AND A COASTAL FLOOD ADVISORY IS ALSO IN EFFECT.

A FLOOD WATCH HAS BEEN ISSUED AND IS IN EFFECT FROM THIS MORNING
THROUGH LATE TONIGHT. EXPECTING TWO TO THREE INCHES OF RAIN
THROUGH TONIGHT. A FEW LOCATIONS COULD SEE UP TO 5 INCHES.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

COOLER THAN NORMAL OVERNIGHT TEMPS WEDNESDAY NIGHT A REINFORCING
COLD FRONT ON SATURDAY WILL BRING COOLER TEMPS SUNDAY AND MONDAY.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL BE REQUIRED TODAY AND TONIGHT.

GMZ450-452-455-470-472-475-181145-
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-
541 AM CST TUE NOV 17 2015

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF THE NORTHWEST
GULF OF MEXICO.

.DAY ONE...TODAY AND TONIGHT

STRONG SOUTHERLY WINDS WILL CONTINUE TODAY...BECOMING WESTERLY
THIS EVENING. A SMALL CRAFT ADVISORY IS IN EFFECT. ALSO TIDES WILL
RUN UP TO TWO FEET ABOVE PREDICTED LEVELS. A COASTAL FLOOD
ADVISORY IS IN EFFECT.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

MODERATE NORTHEAST WINDS WILL PREVAIL THURSDAY WITH WINDS BECOMING
EASTERLY ON FRIDAY.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS REQUIRED TODAY AND TONIGHT.

SWEENEY

In the hours before

Special weather statement, Nov 17, 12:26 PM CST, 5 hours 42 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE LAKE CHARLES LA
1226 PM CST TUE NOV 17 2015

TXZ259-260-171900-
NORTHERN JASPER TX-NORTHERN NEWTON TX-
1226 PM CST TUE NOV 17 2015

...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN JASPER AND NORTHERN
NEWTON COUNTIES UNTIL 100 PM CST...

AT 1226 PM CST...DOPPLER RADAR WAS TRACKING A LINE OF STRONG
THUNDERSTORMS ALONG A LINE EXTENDING FROM NEAR HEMPHILL TO NEAR
FARRSVILLE TO SPURGER...AND MOVING NORTHEAST AT 45 MPH.

WIND GUSTS OF 50 TO 55 MPH WILL BE POSSIBLE WITH THESE STORMS.

LOCATIONS IMPACTED INCLUDE...
JASPER...NEWTON...BON WEIR...BURKEVILLE...BROWNDELL...ROGANVILLE...
HARRISBURG...MAGNOLIA SPRINGS...STRINGTOWN...MAYFLOWER...
FARRSVILLE...JAMESTOWN...HOLLY SPRINGS...WIERGATE AND BLEAKWOOD.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THESE STORMS...AND MAY
LEAD TO FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED
ROADWAYS.

&&

A TORNADO WATCH REMAINS IN EFFECT UNTIL 400 PM CST FOR SOUTHEASTERN
TEXAS.

LAT...LON 3114 9360 3093 9357 3063 9369 3074 9406
      3114 9401 3116 9391 3117 9363
TIME...MOT...LOC 1826Z 203DEG 39KT 3130 9382 3100 9384 3070 9415

Special weather statement, Nov 17, 1:10 PM CST, 4 hours 58 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE LAKE CHARLES LA
110 PM CST TUE NOV 17 2015

LAZ027-030-041-TXZ180-201-215-216-259>262-171945-
BEAUREGARD LA-VERNON LA-CALCASIEU LA-NORTHERN JASPER TX-JEFFERSON TX-
TYLER TX-SOUTHERN JASPER TX-SOUTHERN NEWTON TX-ORANGE TX-
NORTHERN NEWTON TX-HARDIN TX-
110 PM CST TUE NOV 17 2015

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN VERNON...WESTERN
BEAUREGARD AND WEST CENTRAL CALCASIEU PARISHES...SOUTHEASTERN
TYLER...NORTHERN ORANGE...NORTHERN JEFFERSON...NORTHEASTERN HARDIN...
SOUTHEASTERN JASPER AND NEWTON COUNTIES UNTIL 145 PM CST...

AT 109 PM CST...DOPPLER RADAR WAS TRACKING A LINE OF STRONG
THUNDERSTORMS ALONG A LINE EXTENDING FROM NEAR TOLEDO BEND DAM TO
NEAR LUMBERTON...AND THE ENTIRE LINE IS MOVING SOUTHEAST AT 20
MPH...WHILE THE INDIVIDUAL STORM ARE MOVING NORTHEAST AT 45.

WIND GUSTS OF 50 TO 55 MPH WILL BE POSSIBLE WITH THESE STORMS.

LOCATIONS IMPACTED INCLUDE...
BEAUMONT...LUMBERTON...VIDOR...LEESVILLE...SILSBEE...NEWTON...
KIRBYVILLE...ROSEPINE...MERRYVILLE...DEWEYVILLE...BON WEIR...BUNA...
BURKEVILLE...FORT POLK...FIELDS...EVADALE...CALL...TOLEDO BEND DAM...
MAURICEVILLE AND DERIDDER.

THESE STORMS MAY INTENSIFY...SO BE CERTAIN TO MONITOR LOCAL RADIO AND
TV STATIONS...AS WELL AS LOCAL CABLE TV OUTLETS...FOR ADDITIONAL
INFORMATION AND POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 400 PM CST FOR SOUTHWESTERN
LOUISIANA AND SOUTHEASTERN TEXAS.

LAT...LON 3106 9319 3005 9386 3026 9434 3118 9361
      3117 9358 3119 9355 3122 9355 3123 9354
      3124 9356 3124 9354 3126 9354
TIME...MOT...LOC 1909Z 314DEG 19KT 3116 9354 3028 9425

Special weather statement, Nov 17, 1:49 PM CST, 4 hours 19 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE LAKE CHARLES LA
149 PM CST TUE NOV 17 2015

LAZ027-028-030-031-041-042-073-TXZ201-215-216-259>262-172015-
RAPIDES LA-ALLEN LA-BEAUREGARD LA-WEST CAMERON LA-JEFFERSON DAVIS LA-
VERNON LA-CALCASIEU LA-SOUTHERN JASPER TX-SOUTHERN NEWTON TX-
NORTHERN NEWTON TX-NORTHERN JASPER TX-JEFFERSON TX-ORANGE TX-
HARDIN TX-
149 PM CST TUE NOV 17 2015

...SIGNIFICANT WEATHER ADVISORY FOR NORTH CENTRAL CAMERON...VERNON...
WESTERN ALLEN...BEAUREGARD...WESTERN JEFFERSON DAVIS...SOUTHWESTERN
RAPIDES AND CALCASIEU PARISHES...ORANGE...NORTH CENTRAL JEFFERSON...
EASTERN HARDIN...SOUTHEASTERN JASPER AND SOUTHEASTERN NEWTON COUNTIES
UNTIL 215 PM CST...

AT 148 PM CST...DOPPLER RADAR WAS TRACKING A LINE OF STRONG
THUNDERSTORMS ALONG A LINE EXTENDING FROM NEAR KURTHWOOD TO NEAR
BEAUMONT...AND THE LINE WAS MOVING SOUTHEAST AT 30 MPH WHILE THE
INDIVDUAL STORMS ARE MOVING NORTHEAST AT 50 MPH.

WIND GUSTS OF 50 TO 55 MPH WILL BE POSSIBLE WITH THESE STORMS.

LOCATIONS IMPACTED INCLUDE...
BEAUMONT...LAKE CHARLES...PORT ARTHUR...SULPHUR...ORANGE...VIDOR...
BRIDGE CITY...LEESVILLE...WESTLAKE...WEST ORANGE...VINTON...
ROSEPINE...MERRYVILLE...ANACOCO...REEVES...DEWEYVILLE...BON WEIR...
DRY CREEK...RAGLEY AND FORT POLK.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 400 PM CST FOR SOUTHWESTERN
LOUISIANA AND SOUTHEASTERN TEXAS.

LAT...LON 3121 9261 3005 9331 3001 9427 3137 9333
      3137 9318
TIME...MOT...LOC 1948Z 292DEG 25KT 3132 9326 3007 9418

Special weather statement, Nov 17, 3:06 PM CST, 3 hours 2 minutes before

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Local storm report, Nov 17, 3:13 PM CST, 2 hours 55 minutes before

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Special weather statement, Nov 17, 3:34 PM CST, 2 hours 34 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Nov 18, 12:51 AM CST	Areal Flood Advisory	LCH	Iberia, Saint Martin, St. Mary	3 hr
Nov 18, 1:09 AM CST	River Flood Warning	LCH	Calcasieu	4 days
Nov 18, 1:09 AM CST	River Flood Warning	LCH	Lafayette, Vermilion	5 days

Nearby

Severe Thunderstorm Warnings in Louisiana, 2015 Every severe thunderstorm warning in 2015

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.