Alert archive / Louisiana / Special Weather Statements in 2021

Special Weather Statement, NWS Shreveport, LA

April 14, 2021Bienville Parish, Louisiana

NWS Shreveport, LA issued this special weather statement at Apr 14, 2021, 5:13 AM CDT for Bienville Parish, Louisiana. It was in force for 62 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 14, 2021, 5:13 AM CDT (10:13 UTC)
Expired
Apr 14, 2021, 6:15 AM CDT
In force
62 min
Issued by
NWS Shreveport, LA

County Bienville Parish, LA

The radar

The Shreveport radar (KSHV), 75 km from the middle of the area, began a volume at 10:16 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

Shreveport, LA (KSHV), launched 00:00Z, 10.2 hours before the alert went out and 70 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, Shreveport, LA at 00:00Z on 2021-04-14Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1508 joules per kilogram.LCLEL10008507005003002001001 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, Shreveport, LA at 00:00Z on 2021-04-14The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -34 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
1508 J/kg
Mixed-layer CIN
-7 J/kg
Mixed-layer LCL
1286 m above ground
0-6 km bulk shear
52 kt
0-1 km storm-relative helicity
-34 m²/s²
0-3 km storm-relative helicity
24 m²/s²
Significant tornado parameter
0.3
Supercell composite
1.8

Open this sounding in Storm Lab

The text

As transmitted.

842 
WWUS84 KSHV 141013
SPSSHV

Special Weather Statement
National Weather Service Shreveport LA
513 AM CDT Wed Apr 14 2021
 
LAZ011-012-018-019-141115-
Winn LA-Bienville LA-Natchitoches LA-Red River LA-
513 AM CDT Wed Apr 14 2021

...SIGNIFICANT WEATHER ADVISORY FOR EASTERN RED RIVER...NORTH CENTRAL
NATCHITOCHES...SOUTHEASTERN BIENVILLE AND NORTHWESTERN WINN PARISHES
UNTIL 615 AM CDT...

At 513 AM CDT, Doppler radar was tracking a strong thunderstorm over
Coushatta, or 21 miles northwest of Natchitoches, moving northeast at
30 mph.

Nickel size hail will be possible with this storm.

Locations impacted include...
Coushatta, Martin, Saline, Lucky, Ashland, Edgefield, Bienville,
Brice, Hanna, Friendship, Chestnut, Armistead and Womack.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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 3194 9333 3204 9342 3239 9294 3211 9281
TIME...MOT...LOC 1013Z 236DEG 26KT 3201 9330 

$$

15

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 13, 7:16 PM CDTSevere Thunderstorm WarningSHVHarrison, Panola44 min
Apr 13, 7:30 PM CDTSpecial Weather StatementSHVShelby30 min
Apr 13, 8:00 PM CDTSevere Thunderstorm WarningSHVHarrison, Panola38 min
Apr 13, 9:28 PM CDTSpecial Weather StatementSHVCherokee62 min
Apr 13, 10:24 PM CDTSpecial Weather StatementSHVRusk36 min
Apr 14, 12:55 AM CDTSpecial Weather StatementSHVSmith35 min
Apr 14, 1:13 AM CDTSpecial Weather StatementSHVSmith32 min
Apr 14, 1:27 AM CDTSevere Thunderstorm WarningSHVSmith, Upshur, Wood63 min
Apr 14, 1:59 AM CDTSpecial Weather StatementSHVUpshur31 min
Apr 14, 2:09 AM CDTSpecial Weather StatementSHVGregg36 min
Apr 14, 2:33 AM CDTSpecial Weather StatementSHVUpshur42 min
Apr 14, 2:41 AM CDTSpecial Weather StatementSHVGregg49 min
Apr 14, 3:30 AM CDTSpecial Weather StatementSHVMarion45 min
Apr 14, 4:29 AM CDTSpecial Weather StatementSHVFranklin, Titus46 min
Apr 14, 4:54 AM CDTSevere Thunderstorm WarningSHVBowie, Morris, Red River, Titus50 min
Apr 14, 4:13 AM CDTSpecial Weather StatementSHVBossier62 min
Apr 14, 5:25 AM CDTSpecial Weather StatementSHVBossier65 min
Apr 14, 5:38 AM CDTSevere Thunderstorm WarningSHVGrant, LaSalle, Winn41 min
Apr 14, 5:41 AM CDTSpecial Weather StatementSHVBossier49 min
Apr 14, 6:31 AM CDTSpecial Weather StatementSHVClaiborne, Webster59 min
Apr 14, 7:28 AM CDTSpecial Weather StatementSHVClaiborne62 min
Apr 14, 8:29 AM CDTSpecial Weather StatementSHVUnion61 min
Apr 14, 10:09 AM CDTSpecial Weather StatementSHVNatchitoches51 min
Apr 14, 3:32 AM CDTSpecial Weather StatementSHVHoward43 min
Apr 14, 4:00 AM CDTSpecial Weather StatementSHVNevada60 min
Apr 14, 5:43 AM CDTSpecial Weather StatementSHVLittle River47 min
Apr 14, 6:04 AM CDTSevere Thunderstorm WarningSHVHoward, Little River, Sevier42 min
Apr 14, 7:49 AM CDTSpecial Weather StatementSHVUnion56 min
Apr 14, 2:38 AM CDTSpecial Weather StatementSHVMcCurtain37 min
Apr 14, 3:08 AM CDTSpecial Weather StatementSHVMcCurtain22 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; radar from the NEXRAD Level II archive.