Alert archive / Louisiana / Severe Thunderstorm Warnings in 2005

Severe Thunderstorm Warning 101, NWS Lake Charles, LA

August 14, 2005Avoyelles Parish, Louisiana

NWS Lake Charles, LA issued this severe thunderstorm warning at Aug 14, 2005, 4:15 PM CDT for Avoyelles Parish, Louisiana. It was in force for 60 min. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Aug 14, 2005, 4:15 PM CDT (21:15 UTC)
Expired: Aug 14, 2005, 5:15 PM CDT
In force: 60 min
Issued by: NWS Lake Charles, LA
Area: Counties, with a storm outline in the text

County Avoyelles Parish, LA

What was reported inside it

Time	Report	Where	Remark
Aug 14, 4:48 PM CDT	TSTM WND DMG	Marksville, LA	SVRL TREES DOWN

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

Did it verify

Verified. The Iowa Environmental Mesonet's Cow matched one storm report to this severe thunderstorm warning; the first came 33 minutes after it went out.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The nearest sounding before it

Lake Charles Mun, LA (KLCH), launched 12:00Z, 9.3 hours before the alert went out and 156 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: 2079 J/kg
Mixed-layer CIN: -38 J/kg
Mixed-layer LCL: 977 m above ground
0-6 km bulk shear: 10 kt
0-1 km storm-relative helicity: 29 m²/s²
0-3 km storm-relative helicity: 38 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WUUS54 KLCH 142115
SVRLCH
LAC009-142215-
/O.NEW.KLCH.SV.W.0101.050814T2115Z-050814T2215Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE LAKE CHARLES LA
415 PM CDT SUN AUG 14 2005

THE NATIONAL WEATHER SERVICE IN LAKE CHARLES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  AVOYELLES PARISH IN CENTRAL LOUISIANA

* UNTIL 515 PM CDT

* AT 411 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING NICKEL SIZE HAIL...AND
  DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED OVER
  MARKSVILLE...AND MOVING NORTHEAST AT 20 MPH.

* THE SEVERE THUNDERSTORM EXPECTED TO BE NEAR...
  RURAL NORTHERN AVOYELLES PARISH AT 430 PM CDT

SEVERE THUNDERSTORMS PRODUCE WINDS IN EXCESS OF 60 MPH...DESTRUCTIVE
HAIL...DEADLY LIGHTNING AND TORRENTIAL RAIN.

CALL 337-477-5285 TO REPORT SEVERE WEATHER TO THE WEATHER SERVICE.

LAT...LON 3113 9222 3103 9206 3122 9192 3130 9213
      3125 9221

$$

1 follow-up statement

000 
WWUS54 KLCH 142148
SVSLCH

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LAKE CHARLES LA
448 PM CDT SUN AUG 14 2005

LAC009-142215-
/O.CON.KLCH.SV.W.0101.000000T0000Z-050814T2215Z/
AVOYELLES LA-
448 PM CDT SUN AUG 14 2005

...A SEVERE THUNDERSTORM WARNING CONTINUES UNTIL 515 PM CDT FOR
AVOYELLES PARISH...

AT 446 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING NICKEL SIZE
HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS
LOCATED 8 MILES EAST OF EFFIE..MOVING NORTHEAST AT 25 MPH.

LAT...LON 3119 9222 3113 9193 3122 9192 3130 9213

$$

JT

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 Aug 14, 2:41 PM CDT, 1 hour 34 minutes earlier.

Area forecast discussion, Aug 14, 2:41 PM CDT, 1 hour 34 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LAKE CHARLES LA
241 PM CDT SUN AUG 14 2005

.DISCUSSION...
HAD TO THROW OUT THE NAM IN FAVOR OF THE GFS SINCE ITS WIND FLOW
PATTERN AT 700 AND 500 MB HAD TROUGHING ALONG THE WESTNER GULF
COAST THAT DIDNT MATCH OBSERVATIONS.

RAINS ON RADAR SHOULD END BEFORE DARK SO ONLY KEPT SLIGHT CHANCE
OF SUMMERTIME EVENING THUNDERSTORMS FOR TONIGHT. GFS MOS HAD SOME
UNUSUALLY HIGH POPS FOR THIS TIME OF YEAR FOR MONDAY....UP TO
ABOUT 80 PERCENT NORTH. COULDNT GO FOR THOSE NUMBERS BUT KEPT A
50 PERCENT CHANCE AREA WIDE.

CURRENT CONTINUING PATTERN WITH HIGH PRESSURE SURFACE AND ALOFT
WITH A LOW LEVEL SOUTHERLY FLOW INDICATES THERE WILL BE SCATTERED
THUNDERSTORMS MAINLY DURING THE DAYTIMES TUESDAY AND WEDNESDAY.

FOR THE EXTENDED PERIOD...THURSDAY THROUGH SUNDAY...CHANCES OF
RAIN DURING AFTERNOONS AND EVENINGS WILL BE SMALL WITH CONTINUING
HIGH PRESSURE SURFACE AND ALOFT.

&&

.AVIATION...
OUTSIDE OF THUNDERSTORMS...VFR.

&&

.MARINE...
RELATIVELY OLIGHT WINDS WILL CONTINUE.

&&

.PRELIMINARY POINT TEMPS/POPS...
KLCH  76  93  76  94 /  20  50  20  40
KBPT  76  93  77  94 /  20  50  20  30
KAEX  72  94  72  96 /  10  50  10  40
KLFT  76  93  75  93 /  20  50  20  40

&&

.LCH WATCHES/WARNINGS/ADVISORIES...
LA...NONE.
TX...NONE.

&&

Hazardous weather outlook, Aug 14, 5:01 AM CDT, 11 hours 14 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE LAKE CHARLES LA
501 AM CDT SUN AUG 14 2005

GMZ450-455-470-475-LAZ027>033-041>045-051>055-TXZ180>182-201-215-
216-151015-
COASTAL WATERS FROM CAMERON, LA TO HIGH ISLAND, TX OUT 20 NM-
COASTAL WATERS FROM LOWER ATCHAFALAYA RIVER TO CAMERON, LA OUT
20 NM-
WATERS FROM CAMERON, LA TO HIGH ISLAND, TX EXTENDING FROM 20 NM
TO 60 NM-
WATERS FROM LOWER ATCHAFALAYA RIVER TO CAMERON, LA EXTENDING FROM
20 TO 60 NM-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-
501 AM CDT SUN AUG 14 2005

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

.DAY ONE...TODAY AND TONIGHT

INCREASING MOISTURE WILL BRING ABOUT SCATTERED MAINLY AFTERNOON
SHOWERS AND THUNDERSTORMS. ONE OR TWO THUNDERSTORMS COULD BRIEFLY
PULSE UP TO SEVERE LEVELS LATE THIS AFTERNOON.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY

MONDAY SHOULD SEE A REPEAT OF SCATTERED AFTERNOON THUNDERSTORMS. A
COUPLE OF STORMS COULD BRIEFLY REACH SEVERE LEVELS LATE IN THE AFTERNOON.
DRIER CONDITIONS ARE EXPECTED OVER THE REMAINDER OF THE WEEK WITH
AFTERNOON HEAT INDICES BETWEEN 105 TO 110 LATE IN THE WEEK.

.SPOTTER INFORMATION STATEMENT...

ACTIVATION OF SPOTTERS WILL NOT BE NEEDED.

JS

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 14, 3:45 PM CDT	Severe Thunderstorm Warning	LCH	Vernon	45 min
Aug 14, 4:32 PM CDT	Severe Thunderstorm Warning	LCH	Acadia	58 min
Aug 14, 4:43 PM CDT	Severe Thunderstorm Warning	LCH	Beauregard, Vernon	62 min
Aug 14, 5:01 PM CDT	Severe Thunderstorm Warning	LCH	Jefferson Davis	59 min
Aug 14, 5:26 PM CDT	Severe Thunderstorm Warning	LCH	Beauregard	64 min
Aug 14, 5:31 PM CDT	Severe Thunderstorm Warning	LCH	Calcasieu	59 min

Nearby

Severe Thunderstorm Warnings in Louisiana, 2005 Every severe thunderstorm warning in 2005

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive.