Alert archive / Louisiana / Special Weather Statements in 2021

Special Weather Statement, NWS Lake Charles, LA

August 15, 2021Lafayette Parish, Louisiana

NWS Lake Charles, LA issued this special weather statement at Aug 15, 2021, 5:21 PM CDT for Lafayette Parish, Louisiana. It was in force for 24 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 15, 2021, 5:21 PM CDT (22:21 UTC)
Expired: Aug 15, 2021, 5:45 PM CDT
In force: 24 min
Issued by: NWS Lake Charles, LA
Hail: 0.00 in
Wind: 40

County Lafayette Parish, LA

The radar

The Lake Charles radar (KLCH), 132 km from the middle of the area, began a volume at 22:25 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, 10.4 hours before the alert went out and 130 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: 1002 J/kg
Mixed-layer CIN: -55 J/kg
Mixed-layer LCL: 810 m above ground
0-6 km bulk shear: 12 kt
0-1 km storm-relative helicity: -5 m²/s²
0-3 km storm-relative helicity: -55 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

472 
WWUS84 KLCH 152221
SPSLCH

Special Weather Statement
National Weather Service Lake Charles LA
521 PM CDT Sun Aug 15 2021
 
LAZ044-045-052>054-152245-
Iberia LA-Lafayette LA-Vermilion LA-Upper St. Martin LA-St. Mary LA-
521 PM CDT Sun Aug 15 2021

...Strong thunderstorms will impact portions of northwestern Iberia,
Lafayette, northwestern St. Mary, northeastern Vermilion and west
central St. Martin Parishes through 545 PM CDT...

At 520 PM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from Lafayette to near Jeanerette. These storms were
nearly stationary.

HAZARD...Winds in excess of 40 mph.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around 
         unsecured objects.

Locations impacted include...
Lafayette, New Iberia, Scott, Carencro, St. Martinville, Jeanerette,
Avery Island, Broussard, Youngsville, Delcambre, Maurice,
Loreauville, Cade, Lydia, Acadiana Regional Airport, Jefferson
Island, Indian Bayou, Sorrel, Coteau and Lake Fausse Pointe.

This includes the following highways...
 Interstate 10 in Louisiana between mile markers 98 and 105.
 Interstate 49 between mile markers 1 and 2.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building. 

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 2977 9173 3013 9226 3031 9204 2997 9151
TIME...MOT...LOC 2220Z 311DEG 2KT 3019 9202 2989 9172 

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...40 MPH

$$

tingler

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 15, 6:54 PM CDT	Special Weather Statement	LCH	Calcasieu	36 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; radar from the NEXRAD Level II archive.