Alert archive / Louisiana / Special Weather Statements in 2021

Special Weather Statement, NWS Lake Charles, LA

April 15, 2021St. Mary Parish, Louisiana

NWS Lake Charles, LA issued this special weather statement at Apr 15, 2021, 5:45 AM CDT for St. Mary Parish, Louisiana. It was in force for 45 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
Apr 15, 2021, 5:45 AM CDT (10:45 UTC)
Expired
Apr 15, 2021, 6:30 AM CDT
In force
45 min
Issued by
NWS Lake Charles, LA

County St. Mary Parish, LA

The nearest sounding before it

Lake Charles Mun, LA (KLCH), launched 00:00Z, 10.8 hours before the alert went out and 170 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-pSkew-T log-p diagram, Lake Charles Mun, LA at 00:00Z on 2021-04-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 651 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Lake Charles Mun, LA at 00:00Z on 2021-04-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 70 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
651 J/kg
Mixed-layer CIN
-154 J/kg
Mixed-layer LCL
566 m above ground
0-6 km bulk shear
46 kt
0-1 km storm-relative helicity
70 m²/s²
0-3 km storm-relative helicity
195 m²/s²
Significant tornado parameter
0.0
Supercell composite
8.6

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 Apr 15, 4:58 AM CDT, 47 minutes earlier.

Area forecast discussion, Apr 15, 4:58 AM CDT, 47 minutes before
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Hazardous weather outlook, Apr 15, 4:20 AM CDT, 1 hour 25 minutes before
Hazardous Weather Outlook
National Weather Service Lake Charles LA
420 AM CDT Thu Apr 15 2021

TXZ180-201-215-216-259>262-160930-
Tyler-Hardin-Jefferson-Orange-Northern Jasper-Northern Newton-
Southern Jasper-Southern Newton-
420 AM CDT Thu Apr 15 2021

This Hazardous Weather Outlook is for southeast Texas.

.DAY ONE...Today and Tonight.
Storms to continue across the region today and into tonight. A
marginal risk of severe thunderstorms through the period with the
main threat in large hail and strong gusty winds. Storm movement
will be to the east.

A slight chance for severe thunderstorms.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.
Storms will continue into Saturday finally ending as a strong cold
front pushes in drier air from the northwest. As series of cold
front will keep the region dry through most of next week.

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

LAZ027>033-041>045-052>055-073-074-160930-
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-
420 AM CDT Thu Apr 15 2021

...FLASH FLOOD WATCH IN EFFECT UNTIL NOON CDT TODAY...

This Hazardous Weather Outlook is for central Louisiana, south
central Louisiana, southwest Louisiana and west central Louisiana.

.DAY ONE...Today and Tonight.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Flash Flood Watch.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.
Storms will continue into Saturday before ending as a strong cold
front will push drier air in from the northwest. As series of cold
front will keep the region dry through most of next week.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

GMZ430-432-435-450-452-455-470-472-475-160930-
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-
420 AM CDT Thu Apr 15 2021

This Hazardous Weather Outlook is for the Gulf of Mexico and the
coastal lakes and bays of the Gulf of Mexico.

.DAY ONE...Today and Tonight.
Storms to continue in the coastal waters today and into tonight.
Storms will produce cloud to water lightning along with gusty winds
and higher seas in and near storm activity. There is a marginal risk
of severe thunderstorms through the period with the main threat in
large hail and strong gusty winds. Storm movement will be to the
east.

No hazardous weather is expected at this time.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.
Storms will continue into Saturday before ending as a strong cold
front will push drier air in from the northwest. Winds in the coastal
waters will swing around to the northwest and increase in speed with
seas building on Saturday into Sunday before relaxing Sunday evening.
As series of additional cold fronts will keep the region dry...
through seas will remain elevated from the winds through most of
next week. No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

K. Kuyper

In the hours before

Special weather statement, Apr 15, 3:49 AM CDT, 1 hour 56 minutes before
Special Weather Statement
National Weather Service Lake Charles LA
349 AM CDT Thu Apr 15 2021

LAZ052-074-150915-
Vermilion LA-East Cameron LA-
349 AM CDT Thu Apr 15 2021

...SPECIAL WEATHER STATEMENT...

At 349 AM CDT, Doppler radar was tracking a strong thunderstorm near
Pecan Island, moving east at 35 mph.

Half inch hail and winds in excess of 30 mph will be possible with
this storm.

Locations impacted include...
Pecan Island and Freshwater City.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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 2955 9239 2958 9262 2962 9275 2975 9260
      2982 9241 2971 9219 2957 9221 2953 9227
      2953 9231
TIME...MOT...LOC 0849Z 247DEG 30KT 2962 9255

Stigger/87
Special weather statement, Apr 15, 3:59 AM CDT, 1 hour 46 minutes before
Special Weather Statement
National Weather Service Lake Charles LA
359 AM CDT Thu Apr 15 2021

LAZ028-029-031>033-042-043-150915-
Acadia LA-Jefferson Davis LA-St. Landry LA-Avoyelles LA-
Evangeline LA-Allen LA-Rapides LA-
359 AM CDT Thu Apr 15 2021

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN RAPIDES...
NORTHEASTERN JEFFERSON DAVIS...EVANGELINE...ACADIA...AVOYELLES...ST.
LANDRY AND SOUTHEASTERN ALLEN PARISHES UNTIL 415 AM CDT...

At 359 AM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from near Black Hawk to 6 miles east of Pine Island.
Movement was southeast at 30 mph.

Half inch hail and winds in excess of 40 mph will be possible with
these storms.

Locations impacted include...
Opelousas, Crowley, Eunice, Jennings, Rayne, Ville Platte,
Marksville, Church Point, Bunkie, Mamou, Welsh, Kinder, Simmesport,
Basile, Oberlin, Iota, Elton, Leonville, Melville and Moreauville.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Frequent cloud to ground lightning is occurring with these storms.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

These storms 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 3132 9200 3128 9202 3127 9199 3122 9199
      3125 9196 3122 9194 3123 9192 3127 9195
      3130 9191 3123 9179 3120 9168 3114 9172
      3105 9172 3098 9180 3087 9180 3086 9182
      3070 9173 3006 9245 3037 9301 3133 9208
TIME...MOT...LOC 0859Z 295DEG 26KT 3115 9160 3037 9267

Stigger/87
Special weather statement, Apr 15, 4:15 AM CDT, 1 hour 30 minutes before
Special Weather Statement
National Weather Service Lake Charles LA
415 AM CDT Thu Apr 15 2021

LAZ029-031>033-042>045-052-150945-
Acadia LA-Jefferson Davis LA-Lafayette LA-Vermilion LA-St. Landry LA-
Avoyelles LA-Evangeline LA-Allen LA-Upper St. Martin LA-
415 AM CDT Thu Apr 15 2021

...SIGNIFICANT WEATHER ADVISORY FOR LAFAYETTE...EASTERN JEFFERSON
DAVIS...EVANGELINE...ACADIA...NORTHWESTERN VERMILION...NORTHWESTERN
ST. MARTIN...AVOYELLES...ST. LANDRY AND SOUTHEASTERN ALLEN PARISHES
UNTIL 445 AM CDT...

At 415 AM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from 6 miles northwest of Black Hawk to near
Jennings. Movement was east at 30 mph.

Half inch hail and winds in excess of 40 mph will be possible with
these storms.

Locations impacted include...
Lafayette, Opelousas, Crowley, Eunice, Jennings, Scott, Rayne,
Carencro, Ville Platte, Marksville, Kaplan, Church Point, Bunkie,
Mamou, Welsh, Lake Arthur, Simmesport, Basile, Iota and Gueydan.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Frequent cloud to ground lightning is occurring with these storms.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

These storms 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 3120 9169 3117 9168 3114 9172 3107 9171
      3098 9180 3087 9180 3086 9182 3071 9173
      3056 9176 3051 9173 2997 9226 3008 9293
      3008 9289 3011 9291 3016 9289 3016 9293
      3096 9232 3096 9221 3108 9223 3122 9212
TIME...MOT...LOC 0915Z 267DEG 27KT 3121 9172 3030 9266

Stigger/87
Special weather statement, Apr 15, 4:45 AM CDT, 1 hour before
Special Weather Statement
National Weather Service Lake Charles LA
445 AM CDT Thu Apr 15 2021

LAZ029-032-033-043>045-052>054-151015-
Acadia LA-Iberia LA-Lafayette LA-Vermilion LA-St. Landry LA-
Avoyelles LA-Evangeline LA-Upper St. Martin LA-St. Mary LA-
445 AM CDT Thu Apr 15 2021

...SIGNIFICANT WEATHER ADVISORY FOR IBERIA...LAFAYETTE...NORTHWESTERN
ST. MARY...SOUTHEASTERN EVANGELINE...EASTERN ACADIA...VERMILION...ST.
MARTIN...SOUTHEASTERN AVOYELLES AND ST. LANDRY PARISHES UNTIL 515 AM
CDT...

At 445 AM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from near Black Hawk to near Kaplan. Movement was
east at 45 mph.

Half inch hail and winds in excess of 40 mph will be possible with
these storms.

Locations impacted include...
Lafayette, New Iberia, Opelousas, Crowley, Abbeville, Catahoula,
Scott, Breaux Bridge, Rayne, Carencro, St. Martinville, Marksville,
Jeanerette, Kaplan, Church Point, Simmesport, Krotz Springs,
Leonville, Arnaudville and Melville.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Frequent cloud to ground lightning is occurring with these storms.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

These storms 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 2962 9202 2962 9204 2961 9205 2952 9198
      2958 9205 2953 9231 2958 9262 3122 9202
      3119 9168 3086 9182 3071 9173 3050 9175
      3044 9164 3031 9162 3013 9146 2963 9162
      2949 9177 2951 9190 2941 9185
TIME...MOT...LOC 0945Z 278DEG 38KT 3113 9172 2998 9223

Stigger/87
Special weather statement, Apr 15, 5:15 AM CDT, 30 minutes before
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Special weather statement, Apr 15, 5:45 AM CDT, 0 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Apr 15, 2:36 AM CDTSpecial Weather StatementLCHGrant24 min
Apr 15, 3:00 AM CDTSpecial Weather StatementLCHGrant45 min
Apr 15, 3:03 AM CDTSpecial Weather StatementLCHJefferson Davis27 min
Apr 15, 3:16 AM CDTSpecial Weather StatementLCHBeauregard29 min
Apr 15, 3:30 AM CDTSpecial Weather StatementLCHJefferson Davis30 min
Apr 15, 3:40 AM CDTSpecial Weather StatementLCHAvoyelles35 min
Apr 15, 3:49 AM CDTSpecial Weather StatementLCHVermilion26 min
Apr 15, 3:59 AM CDTSpecial Weather StatementLCHAcadia, Avoyelles, Evangeline, Jefferson Davis, Saint Landry16 min
Apr 15, 4:15 AM CDTSpecial Weather StatementLCHAcadia, Avoyelles, Evangeline, Jefferson Davis, Lafayette, Saint Landry30 min
Apr 15, 4:45 AM CDTSpecial Weather StatementLCHAvoyelles, Iberia, Lafayette, Saint Landry, Saint Martin, Vermilion30 min
Apr 15, 5:15 AM CDTSpecial Weather StatementLCHIberia, Lafayette, Saint Landry, Saint Martin, St. Mary30 min
Apr 15, 6:30 AM CDTSpecial Weather StatementLCHSt. Mary45 min
Apr 15, 9:31 AM CDTSmall Craft AdvisoryLCH5 hr
Apr 15, 12:27 PM CDTSpecial Marine WarningLCH63 min
Apr 15, 12:50 PM CDTSpecial Marine WarningLCH40 min
Apr 15, 1:38 PM CDTSpecial Marine WarningLCH67 min
Apr 14, 7:26 PM CDTSpecial Weather StatementLCHHardin34 min
Apr 14, 7:40 PM CDTSpecial Weather StatementLCHJefferson35 min
Apr 14, 7:52 PM CDTSevere Thunderstorm WarningLCHJefferson38 min
Apr 14, 8:28 PM CDTSevere Thunderstorm WarningLCHJefferson30 min

Nearby

Special Weather Statements in Louisiana, 2021Every special weather statement in 2021

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.