Alert archive / Mississippi / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 36, NWS New Orleans, LA

April 10, 2021Amite County, Pike County, Walthall County, Mississippi

NWS New Orleans, LA issued this severe thunderstorm warning at Apr 10, 2021, 12:46 AM CDT for Amite County, Pike County, Walthall County, Mississippi. It was in force for 43 min. 3 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 10, 2021, 12:46 AM CDT (05:46 UTC)
Expired
Apr 10, 2021, 1:29 AM CDT
In force
43 min
Issued by
NWS New Orleans, LA
Area
Storm-based polygon
Tornado
Possible
Hail
1.0 in
Wind
60.0 mph

Counties Amite County, MS, Pike County, MS, Walthall County, MS

What was reported inside it

TimeReportWhereRemark
Apr 10, 12:57 AM CDTTSTM WND DMG1 E Mccomb, MSTREES AND POWER LINES DOWN AROUND MCCOMB.
Apr 10, 1:16 AM CDTTSTM WND DMG7 Nw Tylertown, MSROOF OFF OF TRAILER ON TAYLOR PETERS RD.
Apr 10, 1:17 AM CDTTSTM WND DMG5 W Salem, MSMULTIPLE TREES DOWN NEAR THE INTERSECTION OF 583N AND DINAN CHRUCH RD.

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

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Apr 9, 10:25 PM CDTSevere Thunderstorm WatchSPC6 hr
Apr 10, 12:16 AM CDTTornado WatchSPC7 hr

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 00:00Z, 5.8 hours before the alert went out and 119 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, Slidell Radar S, LA at 00:00Z on 2021-04-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2977 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, Slidell Radar S, LA at 00:00Z on 2021-04-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 243 square meters per square second.193958Sfc1 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
2977 J/kg
Mixed-layer CIN
-20 J/kg
Mixed-layer LCL
599 m above ground
0-6 km bulk shear
39 kt
0-1 km storm-relative helicity
243 m²/s²
0-3 km storm-relative helicity
269 m²/s²
Significant tornado parameter
3.4
Supercell composite
18.1

Open this sounding in Storm Lab

The text

As transmitted.

862 
WUUS54 KLIX 100546
SVRLIX
MSC005-113-147-100700-
/O.NEW.KLIX.SV.W.0036.210410T0546Z-210410T0700Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service New Orleans LA
1246 AM CDT Sat Apr 10 2021

The National Weather Service in New Orleans has issued a

* Severe Thunderstorm Warning for...
  Northwestern Walthall County in southern Mississippi...
  Pike County in southern Mississippi...
  Eastern Amite County in southern Mississippi...

* Until 200 AM CDT.

* At 1246 AM CDT, severe thunderstorms were located along a line
  extending from near Smithdale to near Gillsberg, moving east at 35
  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.

* Locations impacted include...
  Mccomb, Liberty, Magnolia, Summit, Tylertown, Smithdale, Salem,
  Gillsberg and Mccomb Airport.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until 700 AM CDT for southern
Mississippi.

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

&&

LAT...LON 3135 9009 3133 9008 3133 9004 3118 9003
      3117 9000 3114 9000 3113 8998 3102 9066
      3102 9085 3135 9072
TIME...MOT...LOC 0546Z 249DEG 30KT 3129 9061 3109 9067 

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

KLG
2 follow-up statements
707 
WWUS54 KLIX 100606
SVSLIX

Severe Weather Statement
National Weather Service New Orleans LA
106 AM CDT Sat Apr 10 2021

MSC005-100615-
/O.CAN.KLIX.SV.W.0036.000000T0000Z-210410T0700Z/
Amite MS-
106 AM CDT Sat Apr 10 2021

...THE SEVERE THUNDERSTORM WARNING FOR EASTERN AMITE COUNTY IS
CANCELLED...

The storms which prompted the warning have moved out of the warned 
area. Therefore, the warning has been cancelled.

A Tornado Watch remains in effect until 700 AM CDT for southern
Mississippi.

LAT...LON 3133 9008 3133 9004 3118 9003 3117 9000
      3114 9000 3113 8998 3104 9055 3135 9055
      3135 9011
TIME...MOT...LOC 0605Z 249DEG 30KT 3135 9043 3115 9050 

$$

MSC113-147-100700-
/O.CON.KLIX.SV.W.0036.000000T0000Z-210410T0700Z/
Walthall MS-Pike MS-
106 AM CDT Sat Apr 10 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 200 AM CDT
FOR NORTHWESTERN WALTHALL AND PIKE COUNTIES...

At 105 AM CDT, severe thunderstorms were located along a line
extending from near Summit to near Magnolia, moving east at 35 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.

Locations impacted include...
Mccomb, Magnolia, Summit, Tylertown, Salem and Mccomb Airport. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until 700 AM CDT for southern
Mississippi.

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

&&

LAT...LON 3133 9008 3133 9004 3118 9003 3117 9000
      3114 9000 3113 8998 3104 9055 3135 9055
      3135 9011
TIME...MOT...LOC 0605Z 249DEG 30KT 3135 9043 3115 9050 

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

KLG
060 
WWUS54 KLIX 100629
SVSLIX

Severe Weather Statement
National Weather Service New Orleans LA
129 AM CDT Sat Apr 10 2021

MSC113-147-100638-
/O.CAN.KLIX.SV.W.0036.000000T0000Z-210410T0700Z/
Walthall MS-Pike MS-
129 AM CDT Sat Apr 10 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN WALTHALL AND PIKE
COUNTIES IS CANCELLED...
            
The storms which prompted the warning have weakened below severe
limits, and no longer pose an immediate threat to life or property.
Therefore, the warning has been cancelled.  However gusty winds are
still possible with these thunderstorms.

A Tornado Watch remains in effect until 700 AM CDT for southern
Mississippi.

LAT...LON 3133 9008 3133 9004 3118 9003 3117 9000
      3114 9000 3113 8998 3104 9055 3135 9055
      3135 9011
TIME...MOT...LOC 0627Z 249DEG 30KT 3142 9022 3122 9029 

$$

KLG

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 9, 11:57 PM CDTSevere Thunderstorm WarningLIXAmite, Pike36 min
Apr 10, 12:12 AM CDTSevere Thunderstorm WarningLIXWalthall33 min
Apr 10, 12:14 AM CDTSpecial Weather StatementLIXWilkinson46 min
Apr 10, 12:41 AM CDTSevere Thunderstorm WarningLIXPearl River11 min
Apr 10, 1:33 AM CDTSpecial Weather StatementLIXPearl River42 min
Apr 10, 1:45 AM CDTTornado WarningLIXWilkinson45 min
Apr 10, 1:52 AM CDTSpecial Weather StatementLIXPearl River38 min
Apr 10, 2:01 AM CDTSevere Thunderstorm WarningLIXPearl River29 min
Apr 10, 2:05 AM CDTTornado WarningLIXPearl River10 min
Apr 10, 2:42 AM CDTSevere Thunderstorm WarningLIXHancock, Harrison33 min
Apr 10, 2:58 AM CDTSevere Thunderstorm WarningLIXAmite, Pike35 min
Apr 10, 3:11 AM CDTSevere Thunderstorm WarningLIXHarrison, Jackson49 min
Apr 10, 3:20 AM CDTSevere Thunderstorm WarningLIXAmite, Wilkinson33 min
Apr 10, 3:29 AM CDTSevere Thunderstorm WarningLIXHarrison, Jackson31 min
Apr 10, 3:36 AM CDTSpecial Weather StatementLIXPearl River39 min
Apr 10, 3:55 AM CDTSevere Thunderstorm WarningLIXHarrison, Jackson14 min
Apr 10, 4:06 AM CDTFlash Flood WarningLIXHancock, Pearl River3 hr
Apr 10, 5:07 AM CDTSpecial Weather StatementLIXHancock23 min
Apr 10, 5:35 AM CDTSpecial Weather StatementLIXHarrison25 min
Apr 10, 6:02 AM CDTAreal Flood AdvisoryLIXJackson3 hr
Apr 10, 9:49 AM CDTRiver Flood WarningLIXPike, Walthall56 hr
Apr 10, 9:58 AM CDTRiver Flood WarningLIXHarrison25 hr

Nearby

Severe 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.