Alert archive / Louisiana / Special Weather Statements in 2021

Special Weather Statement, NWS Lake Charles, LA

May 5, 2021St. Mary Parish, Louisiana

NWS Lake Charles, LA issued this special weather statement at May 5, 2021, 6:01 AM CDT for St. Mary Parish, Louisiana. It was in force for 44 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 5, 2021, 6:01 AM CDT (11:01 UTC)
Expired
May 5, 2021, 6:45 AM CDT
In force
44 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, 11.0 hours before the alert went out and 172 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 2021-05-05Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 351 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 2021-05-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -49 square meters per square second.19395878Sfc1 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
351 J/kg
Mixed-layer CIN
-207 J/kg
Mixed-layer LCL
1168 m above ground
0-6 km bulk shear
32 kt
0-1 km storm-relative helicity
-49 m²/s²
0-3 km storm-relative helicity
19 m²/s²
Significant tornado parameter
0.0
Supercell composite
-1.0

Open this sounding in Storm Lab

The text

As transmitted.

398 
WWUS84 KLCH 051101
SPSLCH

Special Weather Statement
National Weather Service Lake Charles LA
601 AM CDT Wed May 5 2021
 
LAZ054-055-051145-
Lower St. Martin LA-St. Mary LA-
601 AM CDT Wed May 5 2021

...SIGNIFICANT WEATHER ADVISORY FOR NORTHERN ST. MARY AND
SOUTHEASTERN ST. MARTIN PARISHES UNTIL 645 AM CDT...

At 601 AM CDT, Doppler radar was tracking a strong thunderstorm near
Glencoe, or 7 miles southwest of Franklin, moving east at 30 mph.

Pea size hail and winds in excess of 40 mph will be possible with
this storm.

Locations impacted include...
Morgan City, Franklin, Patterson, Berwick, Bayou Vista,
Stephensville, Belle River, Baldwin, Patterson Memorial Airport,
Glencoe, Charenton, Pierre Part and Centerville.

LAT...LON 2971 9114 2963 9162 2963 9166 2965 9163
      2974 9162 2975 9160 2974 9169 2976 9170
      2976 9162 2977 9170 2979 9171 2996 9125
      2992 9123 2990 9121 2986 9120 2984 9118
TIME...MOT...LOC 1101Z 253DEG 24KT 2973 9161 

$$

24

The office that day

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

IssuedProductOfficeCountiesLasted
May 5, 9:40 AM CDTSpecial Marine WarningLCH35 min
May 5, 2:22 PM CDTRiver Flood WarningLCHAllen25 days

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.