Alert archive / Louisiana / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 111, NWS Jackson, MS

April 23, 2021Catahoula Parish, Concordia Parish, Tensas Parish, Louisiana; Adams County, Jefferson County, Mississippi

NWS Jackson, MS issued this severe thunderstorm warning at Apr 23, 2021, 7:55 PM CDT for Catahoula Parish, Concordia Parish, Tensas Parish, Louisiana; Adams County, Jefferson County, Mississippi. It was in force for 29 min. 2 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
Apr 23, 2021, 7:55 PM CDT (00:55 UTC)
Expired
Apr 23, 2021, 8:24 PM CDT
In force
29 min
Issued by
NWS Jackson, MS
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

Counties Catahoula Parish, LA, Concordia Parish, LA, Tensas Parish, LA, Adams County, MS, Jefferson County, MS

The radar

The Jackson/Brandon,MS radar (KDGX), 139 km from the middle of the area, began a volume at 00:59 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.

What was reported inside it

TimeReportWhereRemark
Apr 23, 8:06 PM CDTHAIL 1Ferriday, LADIME TO QUARTER SIZE HAIL REPORTED IN FERRIDAY.
Apr 23, 8:07 PM CDTHAIL 0.7Ferriday, LAHAIL TO AROUND THE SIZE OF DIMES FELL AT THE CIRCLE K IN FERRIDAY. TIME ESTIMATED FROM RADAR.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Jackson, MS (KJAN), launched 00:00Z, 0.9 hours before the alert went out and 133 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, Jackson, MS at 00:00Z on 2021-04-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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, Jackson, MS at 00:00Z on 2021-04-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 238 square meters per square second.1939587897Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1198 m above ground
0-6 km bulk shear
62 kt
0-1 km storm-relative helicity
238 m²/s²
0-3 km storm-relative helicity
244 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

664 
WUUS54 KJAN 240055
SVRJAN
LAC025-029-107-MSC001-063-240145-
/O.NEW.KJAN.SV.W.0111.210424T0055Z-210424T0145Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Jackson MS
755 PM CDT Fri Apr 23 2021

The National Weather Service in Jackson has issued a

* Severe Thunderstorm Warning for...
  Southwestern Tensas Parish in northeastern Louisiana...
  Northeastern Concordia Parish in northeastern Louisiana...
  East central Catahoula Parish in northeastern Louisiana...
  Western Jefferson County in southwestern Mississippi...
  Northeastern Adams County in southwestern Mississippi...

* Until 845 PM CDT.

* At 755 PM CDT, a severe thunderstorm was located near West
  Ferriday, or near Ferriday, moving northeast at 50 mph.

  HAZARD...60 mph wind gusts and quarter size hail.

  SOURCE...Radar indicated.

  IMPACT...Hail damage to vehicles is expected. Expect wind damage 
           to roofs, siding, and trees.

* This severe thunderstorm will be near...
  Natchez, Vidalia, Clayton and Spokane around 805 PM CDT.
  Stanton around 820 PM CDT.
  Church Hill and Stampley around 825 PM CDT.

Other locations impacted by this severe thunderstorm include
Ridgecrest.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 3197 9123 3191 9120 3187 9125 3187 9118
      3161 9106 3161 9115 3157 9116 3144 9152
      3152 9152 3153 9151 3179 9167
TIME...MOT...LOC 0055Z 246DEG 42KT 3159 9159 

HAIL...1.00IN
WIND...60MPH
 
$$

TW
1 follow-up statement
483 
WWUS54 KJAN 240124
SVSJAN

Severe Weather Statement
National Weather Service Jackson MS
824 PM CDT Fri Apr 23 2021

LAC025-029-107-MSC001-063-240133-
/O.CAN.KJAN.SV.W.0111.000000T0000Z-210424T0145Z/
Tensas LA-Concordia LA-Catahoula LA-Jefferson MS-Adams MS-
824 PM CDT Fri Apr 23 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN TENSAS...
NORTHEASTERN CONCORDIA AND EAST CENTRAL CATAHOULA PARISHES...WESTERN
JEFFERSON AND NORTHEASTERN ADAMS COUNTIES IS CANCELLED...
                
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning has been cancelled.

LAT...LON 3197 9123 3191 9120 3187 9125 3187 9118
      3161 9106 3161 9115 3157 9116 3144 9152
      3152 9152 3153 9151 3179 9167
TIME...MOT...LOC 0121Z 246DEG 42KT 3173 9123 

$$

TW

The office that day

Everything else NWS Jackson, MS issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 23, 7:20 PM CDTSpecial Weather StatementJANCatahoula, Concordia40 min
Apr 23, 7:30 PM CDTSevere Thunderstorm WarningJANCatahoula, Concordia45 min
Apr 23, 8:03 PM CDTSpecial Weather StatementJANConcordia27 min
Apr 23, 9:35 PM CDTSevere Thunderstorm WarningJANCatahoula, Concordia36 min
Apr 23, 11:38 PM CDTSpecial Weather StatementJANWest Feliciana22 min
Apr 23, 8:39 PM CDTSpecial Weather StatementJANAdams36 min
Apr 23, 9:08 PM CDTSpecial Weather StatementJANMarion52 min
Apr 23, 9:14 PM CDTSpecial Weather StatementJANFranklin, Jefferson46 min
Apr 23, 9:31 PM CDTRiver Flood WarningJANJones36 hr
Apr 23, 10:04 PM CDTSpecial Weather StatementJANMarion26 min
Apr 23, 10:35 PM CDTSpecial Weather StatementJANForrest, Lamar55 min
Apr 24, 12:50 AM CDTSpecial Weather StatementJANWilkinson25 min
Apr 24, 12:55 AM CDTSpecial Weather StatementJANForrest50 min
Apr 24, 1:01 AM CDTSevere Thunderstorm WarningJANForrest, Lamar44 min
Apr 24, 1:30 AM CDTSevere Thunderstorm WarningJANFranklin, Lincoln39 min
Apr 24, 1:43 AM CDTSpecial Weather StatementJANJefferson Davis, Lawrence62 min
Apr 24, 1:56 AM CDTSevere Thunderstorm WarningJANCovington, Jefferson Davis, Lawrence64 min
Apr 24, 2:00 AM CDTSpecial Weather StatementJANForrest30 min
Apr 24, 2:05 AM CDTSevere Thunderstorm WarningJANLawrence25 min
Apr 24, 2:35 AM CDTSpecial Weather StatementJANHinds, Rankin55 min
Apr 24, 2:47 AM CDTSevere Thunderstorm WarningJANJasper, Jones, Smith47 min
Apr 24, 2:58 AM CDTSevere Thunderstorm WarningJANHinds, Madison, Rankin, Scott, Smith51 min
Apr 24, 3:44 AM CDTSpecial Weather StatementJANForrest31 min
Apr 24, 3:55 AM CDTSevere Thunderstorm WarningJANForrest6 min
Apr 24, 4:27 AM CDTSpecial Weather StatementJANWashington48 min
Apr 24, 6:23 AM CDTSpecial Weather StatementJANMadison, Rankin, Scott52 min
Apr 24, 8:56 AM CDTRiver Flood WarningJANLeake25 hr
Apr 24, 9:00 AM CDTRiver Flood WarningJANLawrence4 days
Apr 24, 9:00 AM CDTRiver Flood WarningJANCopiah, Simpson3 days
Apr 24, 9:00 AM CDTRiver Flood WarningJANMarion3 days

Nearby

Severe Thunderstorm Warnings in Louisiana, 2021Severe Thunderstorm Warnings in Mississippi, 2021Every severe thunderstorm warning 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.