Alert archive / Louisiana / Special Weather Statements in 2018

Special Weather Statement, NWS Lake Charles, LA

August 6, 2018Allen Parish, Louisiana

NWS Lake Charles, LA issued this special weather statement at Aug 6, 2018, 4:29 PM CDT for Allen Parish, Louisiana. It was in force for 31 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 6, 2018, 4:29 PM CDT (21:29 UTC)
Expired: Aug 6, 2018, 5:00 PM CDT
In force: 31 min
Issued by: NWS Lake Charles, LA

County Allen Parish, LA

The radar

The Ft Polk radar (KPOE), 53 km from the middle of the area, began a volume at 21:31 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, 9.5 hours before the alert went out and 83 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: 2176 J/kg
Mixed-layer CIN: -10 J/kg
Mixed-layer LCL: 683 m above ground
0-6 km bulk shear: 7 kt
0-1 km storm-relative helicity: -5 m²/s²
0-3 km storm-relative helicity: 13 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

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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 6, 3:41 PM CDT, 48 minutes earlier.

Area forecast discussion, Aug 6, 3:41 PM CDT, 48 minutes before

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Hazardous weather outlook, Aug 6, 3:45 PM CDT, 44 minutes before

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In the hours before

Special weather statement, Aug 6, 1:49 PM CDT, 2 hours 40 minutes before

Special Weather Statement
National Weather Service Lake Charles LA
149 PM CDT MON AUG 6 2018

LAZ053-061930-
Iberia-
149 PM CDT MON AUG 6 2018

...A STRONG THUNDERSTORM WILL AFFECT NORTHWESTERN IBERIA PARISH...

At 149 PM CDT, a strong thunderstorm was located over Lydia, or near
Jeanerette, moving northwest at 15 mph.

Winds in excess of 40 mph and pea size hail are possible with this
storm.

Locations impacted include...
New Iberia, Jeanerette, Avery Island, Lydia and Acadiana Regional
Airport.

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.

This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

LAT...LON 2983 9182 2984 9183 2983 9184 2984 9184
      2987 9197 3001 9193 3005 9184 3004 9182
      3006 9180 2994 9164 2991 9165 2985 9171
      2981 9176
TIME...MOT...LOC 1849Z 122DEG 14KT 2990 9175

TWH

Special weather statement, Aug 6, 3:22 PM CDT, 1 hour 7 minutes before

Special Weather Statement
National Weather Service Lake Charles LA
322 PM CDT MON AUG 6 2018

LAZ028-029-062100-
Avoyelles-Rapides-
322 PM CDT MON AUG 6 2018

...A LINE OF STRONG THUNDERSTORMS WILL AFFECT EASTERN RAPIDES AND
WESTERN AVOYELLES PARISHES...

At 321 PM CDT, radar indicated strong thunderstorms were located
along a line extending from Kolin to Hessmer. The storms are nearly
stationary.

Winds in excess of 30 mph and pea size hail are possible with these
storms.

Locations impacted include...
Alexandria, Pineville, Marksville, Bunkie, Cheneyville, Effie, Ball,
Lecompte, Hessmer, Libuse, Echo, Tioga, Esler Regional Airport,
Kingsville, Poland, Kolin, Centerpoint, Ruby, Holloway and Paradise.

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 3142 9225 3132 9214 3113 9206 3101 9205
      3093 9217 3096 9228 3097 9228 3097 9232
      3112 9242 3138 9247 3144 9238
TIME...MOT...LOC 2021Z 295DEG 2KT 3130 9231 3107 9214

TWH

Special weather statement, Aug 6, 3:25 PM CDT, 1 hour 4 minutes before

Special Weather Statement
National Weather Service Lake Charles LA
325 PM CDT MON AUG 6 2018

TXZ180-259-260-062100-
Northern Newton-Northern Jasper-Tyler-
325 PM CDT MON AUG 6 2018

...A LINE OF STRONG THUNDERSTORMS WILL AFFECT NORTHWESTERN TYLER...
NORTHWESTERN NEWTON AND NORTHERN JASPER COUNTIES...

At 325 PM CDT, radar indicated strong thunderstorms were located
along a line extending from 6 miles northeast of Harrisburg to
Ebenezer to near Chester. Movement was north at 15 mph.

Winds in excess of 30 mph are possible with these storms.

Locations impacted include...
Jasper, Woodville, Colmesneil, Chester, Ebenezer, Rockland,
Browndell, Harrisburg and Sam Rayburn Dam.

LAT...LON 3102 9465 3106 9456 3105 9449 3103 9447
      3111 9406 3114 9403 3116 9378 3094 9382
      3091 9414 3074 9460 3099 9466
TIME...MOT...LOC 2025Z 175DEG 13KT 3110 9384 3105 9418 3088 9457

TWH

Special weather statement, Aug 6, 3:40 PM CDT, 49 minutes before

Special Weather Statement
National Weather Service Lake Charles LA
340 PM CDT MON AUG 6 2018

LAZ031>033-043-062130-
Acadia-St. Landry-Evangeline-Allen-
340 PM CDT MON AUG 6 2018

...A LINE OF STRONG THUNDERSTORMS WILL AFFECT SOUTHWESTERN
EVANGELINE...NORTHEASTERN ACADIA...WEST CENTRAL ST. LANDRY AND
NORTHEASTERN ALLEN PARISHES...

At 339 PM CDT, radar indicated strong thunderstorms were located
along a line extending from near Beaver to near Richard. Movement was
southwest at 5 mph.

Winds in excess of 30 mph are possible with these storms.

Locations impacted include...
Eunice, Oakdale, Mamou, Basile, Pine Prairie, Chataignier, Mowata,
Savoy, Duralde, Allen Parish Airport, Swords, Branch, Richard,
Beaver, Reddell and Bond.

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 3068 9275 3039 9251 3031 9234 3035 9225
      3046 9223 3085 9245 3089 9262 3083 9274
TIME...MOT...LOC 2039Z 067DEG 5KT 3076 9259 3044 9235

TWH

Special weather statement, Aug 6, 4:14 PM CDT, 15 minutes before

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Special weather statement, Aug 6, 4:29 PM CDT, 0 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
Aug 6, 1:17 PM CDT	Special Weather Statement	LCH	Saint Martin	43 min
Aug 6, 1:49 PM CDT	Special Weather Statement	LCH	Saint Martin	41 min
Aug 6, 3:22 PM CDT	Special Weather Statement	LCH	Rapides	38 min
Aug 6, 3:40 PM CDT	Special Weather Statement	LCH	Evangeline	50 min
Aug 6, 4:14 PM CDT	Special Weather Statement	LCH	Avoyelles	46 min
Aug 6, 4:46 PM CDT	Special Weather Statement	LCH	Acadia, Allen, Vernon	44 min
Aug 6, 3:25 PM CDT	Special Weather Statement	LCH	Tyler	35 min

Nearby

Special Weather Statements in Louisiana, 2018 Every special weather statement in 2018

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.