Alert archive / Mississippi / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 22, NWS New Orleans, LA

March 25, 2021Tangipahoa Parish, Louisiana; Amite County, Pike County, Walthall County, Mississippi

NWS New Orleans, LA issued this severe thunderstorm warning at Mar 25, 2021, 3:33 PM CDT for Tangipahoa Parish, Louisiana; Amite County, Pike County, Walthall County, Mississippi. It was in force for 27 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
Mar 25, 2021, 3:33 PM CDT (20:33 UTC)
Expired
Mar 25, 2021, 4:00 PM CDT
In force
27 min
Issued by
NWS New Orleans, LA
Area
Storm-based polygon
Hail
1.25 in
Wind
60.0 mph

Counties Tangipahoa Parish, LA, Amite County, MS, Pike County, MS, Walthall County, MS

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 8.6 hours before the alert went out and 116 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 12:00Z on 2021-03-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2504 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Slidell Radar S, LA at 12:00Z on 2021-03-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 471 square meters per square second.1939587897117Sfc1 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
2504 J/kg
Mixed-layer CIN
-31 J/kg
Mixed-layer LCL
587 m above ground
0-6 km bulk shear
63 kt
0-1 km storm-relative helicity
471 m²/s²
0-3 km storm-relative helicity
588 m²/s²
Significant tornado parameter
9.6
Supercell composite
36.3

Open this sounding in Storm Lab

The text

As transmitted.

412 
WUUS54 KLIX 252033
SVRLIX
LAC105-MSC005-113-147-252100-
/O.NEW.KLIX.SV.W.0022.210325T2033Z-210325T2100Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service New Orleans LA
333 PM CDT Thu Mar 25 2021

The National Weather Service in New Orleans has issued a

* Severe Thunderstorm Warning for...
  Northwestern Tangipahoa Parish in southeastern Louisiana...
  Northwestern Walthall County in southern Mississippi...
  Southern Pike County in southern Mississippi...
  Southeastern Amite County in southern Mississippi...

* Until 400 PM CDT.

* At 333 PM CDT, a severe thunderstorm was located over Osyka, or 15
  miles northeast of Greensburg, moving northeast at 65 mph.

  HAZARD...60 mph wind gusts and half dollar size hail.

  SOURCE...Radar indicated.

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

* Locations impacted include...
  Magnolia, Kentwood, Tylertown, Osyka and Salem. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

To report severe weather, contact your nearest law enforcement
agency. They will send your report to the National Weather Service
office in New Orleans.

&&

LAT...LON 3133 9008 3133 9004 3118 9003 3117 9000
      3092 9053 3096 9057 3100 9057 3100 9061
      3103 9064 3135 9019 3135 9011
TIME...MOT...LOC 2033Z 233DEG 56KT 3101 9051 

HAIL...1.25IN
WIND...60MPH
 
$$

PG
1 follow-up statement
028 
WWUS54 KLIX 252042
SVSLIX

Severe Weather Statement
National Weather Service New Orleans LA
342 PM CDT Thu Mar 25 2021

LAC105-MSC005-252051-
/O.CAN.KLIX.SV.W.0022.000000T0000Z-210325T2100Z/
Tangipahoa LA-Amite MS-
342 PM CDT Thu Mar 25 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN TANGIPAHOA PARISH
IN SOUTHEASTERN LOUISIANA AND SOUTHEASTERN AMITE COUNTIES IS
CANCELLED...
    
The severe thunderstorm which prompted the warning has moved out of 
the warned area. Therefore, the warning has been cancelled.

LAT...LON 3133 9008 3133 9004 3118 9003 3117 9000
      3117 9002 3100 9037 3100 9055 3110 9055
      3135 9019 3135 9011
TIME...MOT...LOC 2041Z 233DEG 56KT 3109 9038 

$$

MSC113-147-252100-
/O.CON.KLIX.SV.W.0022.000000T0000Z-210325T2100Z/
Walthall MS-Pike MS-
342 PM CDT Thu Mar 25 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 400 PM CDT
FOR NORTHWESTERN WALTHALL AND SOUTHERN PIKE COUNTIES...

At 341 PM CDT, a severe thunderstorm was located near Magnolia, or 11
miles southeast of Mccomb, moving northeast at 65 mph.

HAZARD...60 mph wind gusts and half dollar size hail.

SOURCE...Radar indicated.

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

Locations impacted include...
Magnolia, Tylertown, Osyka and Salem. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

To report severe weather contact your nearest law enforcement agency.
They will send your report to the National Weather Service office in
New Orleans.

&&

LAT...LON 3133 9008 3133 9004 3118 9003 3117 9000
      3117 9002 3100 9037 3100 9055 3110 9055
      3135 9019 3135 9011
TIME...MOT...LOC 2041Z 233DEG 56KT 3109 9038 

HAIL...1.25IN
WIND...60MPH
 
$$

PG

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 24, 7:35 PM CDTSpecial Weather StatementLIXSaint Helena40 min
Mar 24, 8:29 PM CDTSpecial Weather StatementLIXPointe Coupee, West Feliciana46 min
Mar 24, 9:02 PM CDTSevere Thunderstorm WarningLIXEast Feliciana, West Feliciana28 min
Mar 25, 10:27 AM CDTSpecial Weather StatementLIXSaint Helena63 min
Mar 25, 2:00 PM CDTSpecial Weather StatementLIXWashington45 min
Mar 25, 3:13 PM CDTSpecial Weather StatementLIXSaint Helena32 min
Mar 25, 4:11 PM CDTMarine Dense Fog AdvisoryLIX42 hr
Mar 24, 7:50 PM CDTSpecial Weather StatementLIXHancock40 min
Mar 24, 8:31 PM CDTSpecial Weather StatementLIXPearl River29 min
Mar 24, 9:29 PM CDTSevere Thunderstorm WarningLIXAmite, Wilkinson16 min
Mar 24, 9:52 PM CDTSpecial Weather StatementLIXAmite38 min
Mar 24, 10:19 PM CDTSevere Thunderstorm WarningLIXPike, Walthall26 min
Mar 25, 2:26 PM CDTRiver Flood WarningLIXPike, Walthall40 hr
Mar 25, 3:09 PM CDTSpecial Weather StatementLIXWalthall36 min
Mar 25, 3:12 PM CDTSevere Thunderstorm WarningLIXPike, Walthall10 min
Mar 25, 3:48 PM CDTSpecial Weather StatementLIXPike, Walthall27 min
Mar 25, 4:11 PM CDTSpecial Weather StatementLIXWalthall34 min

Nearby

Severe Thunderstorm Warnings in Mississippi, 2021Severe Thunderstorm Warnings in Louisiana, 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; the sounding from the Mesonet's radiosonde archive.