Alert archive / Louisiana / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 108, NWS Lake Charles, LA

December 13, 2015Calcasieu Parish, Cameron Parish, Jefferson Davis Parish, Louisiana

NWS Lake Charles, LA issued this severe thunderstorm warning at Dec 13, 2015, 1:02 PM CST for Calcasieu Parish, Cameron Parish, Jefferson Davis Parish, Louisiana. It was in force for 28 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: Dec 13, 2015, 1:02 PM CST (19:02 UTC)
Expired: Dec 13, 2015, 1:30 PM CST
In force: 28 min
Issued by: NWS Lake Charles, LA
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Calcasieu Parish, LA, Cameron Parish, LA, Jefferson Davis Parish, LA

The radar

The Lake Charles radar (KLCH), 9 km from the middle of the area, began a volume at 19:05 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, 7.0 hours before the alert went out and 7 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: 341 J/kg
Mixed-layer CIN: -5 J/kg
Mixed-layer LCL: 506 m above ground
0-6 km bulk shear: 63 kt
0-1 km storm-relative helicity: 346 m²/s²
0-3 km storm-relative helicity: 408 m²/s²
Significant tornado parameter: 0.8
Supercell composite: 5.0

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 Dec 13, 11:11 AM CST, 1 hour 51 minutes earlier.

Area forecast discussion, Dec 13, 11:11 AM CST, 1 hour 51 minutes before

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Hazardous weather outlook, Dec 13, 5:22 AM CST, 7 hours 40 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE LAKE CHARLES LA
522 AM CST SUN DEC 13 2015

LAZ027>033-041>045-052>055-073-074-TXZ180-201-215-216-259>262-
141200-
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-
522 AM CST SUN DEC 13 2015

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

.DAY ONE...TODAY AND TONIGHT

STRONG SOUTHERLY WINDS WILL OCCUR AHEAD OF A PACIFIC COLD FRONT.
SUSTAINED WINDS WILL 20 TO 25 MPH WITH GUSTS OVER 30 MPH. THIS MAY
CAUSE LOOSE OBJECTS SUCH AS TRASH CANS AND LAWN FURNITURE TO BE
BLOWN AROUND...AND TRAVEL DIFFICULTIES FOR HIGH PROFILE VEHICLES.

ALSO...A SQUALL LINE OF SHOWERS AND A FEW THUNDERSTORMS WILL
ACCOMPANY THE FRONT. ISOLATED DAMAGING WIND GUSTS WILL BE POSSIBLE
AND THE FORECAST AREA WILL BE IN A MARGINAL RISK FOR SEVERE
STORMS. THIS ACTIVITY WILL ALSO PRODUCE HIGH RAINFALL RATES OF 1
TO 2 INCHES PER HOUR...THAT MAY CAUSE STREET FLOODING OF POOR
DRAINAGE AREAS.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY

COLDER TEMPERATURES ARE EXPECTED BY THE END OF THE WEEK INTO THE
WEEKEND WITH OVERNIGHT LOWS IN THE MID TO UPPER 30S.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL NOT BE NEEDED.

GMZ430-432-435-450-452-455-470-472-475-141200-
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-
522 AM CST SUN DEC 13 2015

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

.DAY ONE...TODAY AND TONIGHT

STRONG AND GUSTY SOUTH WINDS AND VERY ROUGH SEAS WILL OCCUR AHEAD
OF A COLD FRONT. A SMALL CRAFT ADVISORY WILL BE IN EFFECT.
ALSO...A SQUALL LINE WILL ACCOMPANY THE FRONT THAT MAY LEAD TO
ADDITIONAL DAMAGING WIND GUSTS...WITH AN ISOLATED CHANCE OF A
WATERSPOUT.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY

ANOTHER COLD FRONT WILL MOVE ACROSS ON WEDNESDAY. COLDER AIR WILL
MOVE IN BEHIND THIS FRONT THAT MAY LEAD TO STRONG NORTH WINDS FOR
THURSDAY.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL NOT BE NEEDED.

RUA

In the hours before

Special weather statement, Dec 13, 9:40 AM CST, 3 hours 22 minutes before

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Special weather statement, Dec 13, 11:16 AM CST, 1 hour 46 minutes before

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Local storm report, Dec 13, 11:25 AM CST, 1 hour 37 minutes before

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Local storm report, Dec 13, 11:58 AM CST, 1 hour 4 minutes before

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Special weather statement, Dec 13, 12:48 PM CST, 14 minutes before

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Local storm report, Dec 13, 1:00 PM CST, 2 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
Dec 13, 3:47 AM CST	Small Craft Advisory	LCH		20 hr
Dec 13, 9:40 AM CST	Special Weather Statement	LCH	Beauregard, Vernon	95 min
Dec 13, 10:09 AM CST	Special Marine Warning	LCH		2 hr
Dec 13, 11:16 AM CST	Special Weather Statement	LCH	Allen, Beauregard, Calcasieu, Cameron, Rapides, Vernon	89 min
Dec 13, 12:05 PM CST	Special Marine Warning	LCH		115 min
Dec 13, 12:48 PM CST	Special Weather Statement	LCH	Allen, Calcasieu, Cameron, Evangeline, Jefferson Davis, Rapides	87 min
Dec 13, 1:54 PM CST	Special Marine Warning	LCH		2 hr
Dec 13, 2:07 PM CST	Special Weather Statement	LCH	Acadia, Allen, Avoyelles, Calcasieu, Cameron, Evangeline and 5 more	113 min
Dec 13, 3:57 PM CST	Special Marine Warning	LCH		2 hr
Dec 13, 7:39 AM CST	Special Weather Statement	LCH	Hardin, Tyler	66 min
Dec 13, 8:50 AM CST	Special Weather Statement	LCH	Hardin, Jasper, Jefferson, Newton, Orange, Tyler	85 min
Dec 13, 9:58 AM CST	Areal Flood Advisory	LCH	Jefferson	4 hr

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.