Alert archive / Louisiana / Special Weather Statements in 2021

Special Weather Statement, NWS Lake Charles, LA

May 10, 2021Saint Landry Parish, Louisiana

NWS Lake Charles, LA issued this special weather statement at May 10, 2021, 7:47 AM CDT for Saint Landry Parish, Louisiana. It was in force for 13 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: May 10, 2021, 7:47 AM CDT (12:47 UTC)
Expired: May 10, 2021, 8:00 AM CDT
In force: 13 min
Issued by: NWS Lake Charles, LA

County Saint Landry Parish, LA

The nearest sounding before it

Lake Charles Mun, LA (KLCH), launched 12:00Z, 0.8 hours before the alert went out and 146 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: 1821 J/kg
Mixed-layer CIN: -14 J/kg
Mixed-layer LCL: 536 m above ground
0-6 km bulk shear: 45 kt
0-1 km storm-relative helicity: 147 m²/s²
0-3 km storm-relative helicity: 243 m²/s²
Significant tornado parameter: 2.2
Supercell composite: 11.6

Open this sounding in Storm Lab

The text

As transmitted.

423 
WWUS84 KLCH 101247
SPSLCH

Special Weather Statement
National Weather Service Lake Charles LA
747 AM CDT Mon May 10 2021
 
LAZ033-045-101300-
St. Landry LA-Upper St. Martin LA-
747 AM CDT Mon May 10 2021

...SIGNIFICANT WEATHER ADVISORY FOR EAST CENTRAL ST. LANDRY PARISH
UNTIL 800 AM CDT...

At 746 AM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from 7 miles northeast of Port Barre to near Krotz
Springs. Movement was east at 35 mph.

Pea size hail and wind gusts up to 50 mph will be possible with these
storms.

Locations impacted include...
Krotz Springs.

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.

&&

LAT...LON 3042 9189 3063 9193 3068 9173 3067 9173
      3066 9175 3063 9174 3062 9175 3056 9176
      3051 9173 3051 9175 3050 9175 3050 9170
      3048 9169 3047 9167 3045 9165 3045 9169
TIME...MOT...LOC 1246Z 271DEG 31KT 3061 9184 3048 9183 

$$

Tingler

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 May 10, 6:22 AM CDT, 1 hour 25 minutes earlier.

Area forecast discussion, May 10, 6:22 AM CDT, 1 hour 25 minutes before

Area Forecast Discussion
National Weather Service Lake Charles LA
622 AM CDT Mon May 10 2021

.AVIATION...Rain and scattered thunderstorms can be expected
through the period. This may cause periods of lower vis. MVFR or
possibly IFR ceilings will occur during the period. Winds may be
gusty in storms, however speeds will generally be around 10kts or
less.

&&

.PREV DISCUSSION... /issued 456 AM CDT Mon May 10 2021/

DISCUSSION...
Early this morning an outflow boundary from previous evening
convection had settled across the I-10 corridor extending back
west into interior southeast Texas. Ongoing showers and
thunderstorms continue from near Lake Charles east to Lafayette
and New Iberia. Elsewhere...new activity was forming across
interior southeast Texas and moving eastward into Vernon and
Rapides parishes. A slight risk of severe storms continues up
until 7 am this morning which mainly includes large hail or
damaging winds.

Over the next several hours...instability and plenty of moisture
should allow additional development to spread across the area
with the potential of localized flooding where cells continue to
train across the same area. PW's are running around 1.75 to 2
inches which would support possible flooding even if upper
dynamics are not particularly supportive. Isolated 3 to 5 inch
rains cannot be ruled out where the training bands form.

Rain should begin to taper off later this morning with drier
conditions expected this afternoon. We cannot rule out a
marginally severe storm later this morning through tonight.
A weak front will move south into our northern areas tonight but
stall on Tuesday. As an upper level short wave moves north and
east of us Tuesday night...this should drive the front down to the
coast by early Wednesday morning. Showers and thunderstorms
basically increase across the area Tuesday through mid week.
Northerly drier flow should finally make its present known
Thursday as rains finally move off to the east. High pressure will
settle in Friday and Saturday with rain chances returning Sunday
with the warm front and gulf opening back up ahead of the next
cool front which will be just north of the area late Sunday night.

MARINE...
Surface high pressure ridging westward across the northwest gulf
will provide for a onshore flow through early mid week as a slow
moving frontal boundary stalls near the Gulf coast. Scattered
showers and thunderstorms today will become more widespread by
Wednesday when the front finally passes through the coastal
waters. Drier weather and offshore flow then develops behind the
front Thursday afternoon with onshore flow returning by Friday
night.

&&

.PRELIMINARY POINT TEMPS/POPS...
AEX  80  64  77  63 /  70  30  90  80
LCH  86  72  84  69 /  80  20  60  70
LFT  84  72  84  69 /  70  20  70  70
BPT  86  72  84  67 /  70  20  50  70

&&

.LCH WATCHES/WARNINGS/ADVISORIES...
LA...None.
TX...None.
GM...None.
&&

AVIATION...05

Hazardous weather outlook, May 10, 5:23 AM CDT, 2 hours 24 minutes before

Hazardous Weather Outlook
National Weather Service Lake Charles LA
523 AM CDT Mon May 10 2021

LAZ027>033-041>045-052>055-073-074-TXZ180-201-215-216-259>262-111030-
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-
523 AM CDT Mon May 10 2021

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

.DAY ONE...Today and tonight.

The area will be in a marginal risk for isolated severe storms
today and tonight. Hail and damaging winds are possible. Otherwise...
localized heavy rains and flooding are possible especially where
thunderstorms train over the same area this morning.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

The probability for widespread hazardous weather is low. Showers and
thunderstorms are expected to remain ever present Tuesday through
all of Wednesday. Clearing and drier air to settle in Thursday
afternoon through Saturday. The warm front and gulf open back up on
Sunday across the area which will allow scattered showers and
thunderstorms to redevelop.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

GMZ430-432-435-450-452-455-470-472-475-111030-
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-
523 AM CDT Mon May 10 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.

No hazardous weather is expected at this time.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

Showers and thunderstorms will increase Tuesday through mid week as
a cool front approaches and then moves through the coastal waters
Wednesday and Wednesday night. Rains will taper off from west to east
on Thursday. High pressure and drier air settles in Friday and
Saturday. Scattered showers and thunderstorms return on Sunday as a
warm front lifts northward.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

In the hours before

Special weather statement, May 10, 3:45 AM CDT, 4 hours 2 minutes before

Special Weather Statement
National Weather Service Lake Charles LA
345 AM CDT Mon May 10 2021

LAZ027-028-100915-
Vernon LA-Rapides LA-
345 AM CDT Mon May 10 2021

...SIGNIFICANT WEATHER ADVISORY FOR WESTERN RAPIDES AND NORTHEASTERN
VERNON PARISHES UNTIL 415 AM CDT...

At 345 AM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from Hutton to near Slagle. Movement was east at 40
mph.

Half inch hail and wind gusts up to 50 mph will be possible with
these storms.

Locations impacted include...
Alexandria, Boyce, Hineston, Lena, Alexandria International Airport,
Slagle, Lacamp, Timber Trails, Hutton, Clifton, Flatwoods, Otis,
Elmer, Leander, Sieper, Gardner, Calcasieu, Simpson and Mcnary.

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.

&&

LAT...LON 3149 9270 3150 9268 3147 9271 3145 9270
      3145 9268 3143 9269 3142 9268 3140 9269
      3139 9263 3142 9248 3099 9256 3117 9315
      3137 9313 3137 9303 3135 9295 3137 9295
      3137 9292 3139 9291 3139 9289 3152 9272
TIME...MOT...LOC 0845Z 279DEG 35KT 3134 9303 3118 9305

Tingler

Special weather statement, May 10, 4:36 AM CDT, 3 hours 11 minutes before

Special Weather Statement
National Weather Service Lake Charles LA
436 AM CDT Mon May 10 2021

LAZ028-029-101000-
Avoyelles LA-Rapides LA-
436 AM CDT Mon May 10 2021

...SPECIAL WEATHER STATEMENT...

At 435 AM CDT, Doppler radar was tracking a strong thunderstorm 7
miles northeast of Elmer, or 9 miles south of Alexandria
International Airport, moving east at 40 mph.

Pea size hail and winds in excess of 30 mph will be possible with
this storm.

Locations impacted include...
Alexandria, Pineville, Effie, Lecompte, Hessmer, Echo, Elmer, Poland,
Kolin, Centerpoint, Ruby, Deville and Woodworth.

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.

&&

LAT...LON 3112 9271 3128 9268 3134 9212 3099 9211
TIME...MOT...LOC 0935Z 272DEG 35KT 3119 9257

Tingler

Special weather statement, May 10, 6:17 AM CDT, 1 hour 30 minutes before

Special Weather Statement
National Weather Service Lake Charles LA
617 AM CDT Mon May 10 2021

LAZ029-031>033-101200-
St. Landry LA-Avoyelles LA-Evangeline LA-Allen LA-
617 AM CDT Mon May 10 2021

...SIGNIFICANT WEATHER ADVISORY FOR EVANGELINE...SOUTHWESTERN
AVOYELLES...NORTHWESTERN ST. LANDRY AND NORTHEASTERN ALLEN PARISHES
UNTIL 700 AM CDT...

At 617 AM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from near Glenmora to near Allen Parish Airport.
Movement was east at 30 mph.

Nickel size hail and winds in excess of 40 mph will be possible with
these storms.

Locations impacted include...
Oakdale, Ville Platte, Bunkie, Mamou, Turkey Creek, Morrow, Pine
Prairie, Chataignier, Evergreen, Plaucheville, Bayou Chicot, Goudeau,
Indian Lake, Chicot State Park, Allen Parish Airport, Whiteville,
Swords, Beaver, Reddell and Bond.

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.

&&

LAT...LON 3096 9193 3049 9225 3066 9282 3090 9267
      3089 9251 3091 9248 3095 9248 3097 9244
TIME...MOT...LOC 1117Z 281DEG 26KT 3095 9253 3070 9270

Tingler

Special weather statement, May 10, 7:23 AM CDT, 24 minutes before

Special Weather Statement
National Weather Service Lake Charles LA
723 AM CDT Mon May 10 2021

LAZ033-101245-
St. Landry LA-
723 AM CDT Mon May 10 2021

...SPECIAL WEATHER STATEMENT...

At 723 AM CDT, Doppler radar was tracking a strong thunderstorm over
Palmetto, moving east at 30 mph.

Winds in excess of 30 mph will be possible with this storm.

Locations impacted include...
Melville, Palmetto, Bayou Current, Washington and Lebeau.

LAT...LON 3066 9175 3063 9174 3062 9175 3056 9176
      3059 9206 3082 9197 3082 9181 3076 9175
      3074 9176 3071 9173 3068 9174 3067 9173
TIME...MOT...LOC 1223Z 276DEG 27KT 3072 9191

Tingler

Special weather statement, May 10, 7:27 AM CDT, 20 minutes before

Special Weather Statement
National Weather Service Lake Charles LA
727 AM CDT Mon May 10 2021

LAZ033-045-101300-
St. Landry LA-Upper St. Martin LA-
727 AM CDT Mon May 10 2021

...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN ST. MARTIN AND
SOUTHEASTERN ST. LANDRY PARISHES UNTIL 800 AM CDT...

At 727 AM CDT, Doppler radar was tracking a strong thunderstorm near
Leonville, moving east at 30 mph.

Winds in excess of 40 mph will be possible with this storm.

Locations impacted include...
Opelousas, Krotz Springs, Leonville, Arnaudville, Sunset, Port Barre,
Grand Coteau and Atchafalaya National Wildlife Refuge.

LAT...LON 3041 9218 3044 9218 3044 9221 3059 9211
      3057 9176 3051 9173 3051 9175 3050 9175
      3050 9170 3048 9169 3047 9167 3044 9164
      3039 9162 3036 9165 3035 9163 3034 9163
TIME...MOT...LOC 1227Z 276DEG 27KT 3051 9201

Tingler

Special weather statement, May 10, 7:47 AM CDT, 0 minutes before

Special Weather Statement
National Weather Service Lake Charles LA
747 AM CDT Mon May 10 2021

LAZ033-045-101300-
St. Landry LA-Upper St. Martin LA-
747 AM CDT Mon May 10 2021

...SIGNIFICANT WEATHER ADVISORY FOR EAST CENTRAL ST. LANDRY PARISH
UNTIL 800 AM CDT...

At 746 AM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from 7 miles northeast of Port Barre to near Krotz
Springs. Movement was east at 35 mph.

Pea size hail and wind gusts up to 50 mph will be possible with these
storms.

Locations impacted include...
Krotz Springs.

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.

&&

LAT...LON 3042 9189 3063 9193 3068 9173 3067 9173
      3066 9175 3063 9174 3062 9175 3056 9176
      3051 9173 3051 9175 3050 9175 3050 9170
      3048 9169 3047 9167 3045 9165 3045 9169
TIME...MOT...LOC 1246Z 271DEG 31KT 3061 9184 3048 9183

Tingler

The office that day

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

Issued	Product	Office	Counties	Lasted
May 9, 7:22 PM CDT	Severe Thunderstorm Warning	LCH	Beauregard, Vernon	53 min
May 9, 8:17 PM CDT	Special Weather Statement	LCH	Allen	43 min
May 9, 8:51 PM CDT	Special Weather Statement	LCH	Rapides	39 min
May 9, 9:55 PM CDT	Special Weather Statement	LCH	Evangeline	50 min
May 9, 10:09 PM CDT	Special Weather Statement	LCH	Allen	51 min
May 10, 12:33 AM CDT	Special Weather Statement	LCH	Saint Martin	27 min
May 10, 3:08 AM CDT	Special Weather Statement	LCH	Vernon	37 min
May 10, 3:45 AM CDT	Special Weather Statement	LCH	Rapides	30 min
May 10, 4:36 AM CDT	Special Weather Statement	LCH	Rapides	24 min
May 10, 4:48 AM CDT	Severe Thunderstorm Warning	LCH	Avoyelles, Rapides	45 min
May 10, 6:17 AM CDT	Special Weather Statement	LCH	Evangeline	43 min
May 10, 6:40 AM CDT	Severe Thunderstorm Warning	LCH	Avoyelles, Evangeline, Saint Landry	25 min
May 10, 7:23 AM CDT	Special Weather Statement	LCH	Saint Landry	22 min
May 10, 7:27 AM CDT	Special Weather Statement	LCH	Saint Landry	33 min
May 10, 8:00 AM CDT	Special Weather Statement	LCH	Saint Landry	15 min
May 10, 8:33 AM CDT	Special Weather Statement	LCH	Saint Martin	27 min
May 10, 10:08 AM CDT	River Flood Warning	LCH	Beauregard, Vernon	5 days
May 10, 10:08 AM CDT	River Flood Warning	LCH	Beauregard, Vernon	38 days
May 10, 6:33 PM CDT	Special Weather Statement	LCH	Avoyelles	57 min
May 9, 8:48 PM CDT	Special Weather Statement	LCH	Tyler	42 min
May 9, 9:30 PM CDT	Special Weather Statement	LCH	Jasper	45 min
May 10, 9:03 AM CDT	Areal Flood Warning	LCH	Newton	34 hr
May 10, 6:05 PM CDT	Special Weather Statement	LCH	Tyler	55 min

Nearby

Special Weather Statements in Louisiana, 2021 Every 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.