Alert archive / Louisiana / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 131, NWS New Orleans, LA

June 21, 2021Amite County, Wilkinson County, Mississippi; East Feliciana Parish, Saint Helena Parish, Tangipahoa Parish, Louisiana

NWS New Orleans, LA issued this severe thunderstorm warning at Jun 21, 2021, 9:31 PM CDT for Amite County, Wilkinson County, Mississippi; East Feliciana Parish, Saint Helena Parish, Tangipahoa Parish, Louisiana. It was in force for 44 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
Jun 21, 2021, 9:31 PM CDT (02:31 UTC)
Expired
Jun 21, 2021, 10:15 PM CDT
In force
44 min
Issued by
NWS New Orleans, LA
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

Counties East Feliciana Parish, LA, Saint Helena Parish, LA, Tangipahoa Parish, LA, Amite County, MS, Wilkinson County, MS

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 00:00Z, 2.5 hours before the alert went out and 110 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 2021-06-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 55 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 2021-06-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -47 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
55 J/kg
Mixed-layer CIN
-129 J/kg
Mixed-layer LCL
1096 m above ground
0-6 km bulk shear
15 kt
0-1 km storm-relative helicity
-47 m²/s²
0-3 km storm-relative helicity
-57 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

777 
WUUS54 KLIX 220231
SVRLIX
LAC037-091-105-MSC005-157-220315-
/O.NEW.KLIX.SV.W.0131.210622T0231Z-210622T0315Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service New Orleans LA
931 PM CDT Mon Jun 21 2021

The National Weather Service in New Orleans has issued a

* Severe Thunderstorm Warning for...
  St. Helena Parish in southeastern Louisiana...
  Northeastern East Feliciana Parish in southeastern Louisiana...
  Northwestern Tangipahoa Parish in southeastern Louisiana...
  Southeastern Wilkinson County in southern Mississippi...
  Southwestern Amite County in southern Mississippi...

* Until 1015 PM CDT.

* At 931 PM CDT, a severe thunderstorm was located near Felps, or 9
  miles north of Clinton, moving southeast at 40 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

  IMPACT...Expect damage to roofs, siding, and trees.

* Locations impacted include...
  Greensburg, Amite, Amite City, Centreville, Roseland, Wilson,
  Norwood, Montpelier, Felps, Darlington, Easleyville and Tangipahoa.

This includes Interstate 55 in Louisiana between mile markers 42 and
59.
 
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 3085 9040 3062 9055 3063 9057 3065 9057
      3065 9060 3095 9114 3111 9104
TIME...MOT...LOC 0231Z 298DEG 35KT 3100 9102 

HAIL...<.75IN
WIND...60MPH
 
$$

PG

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 21, 7:56 PM CDTFlood WatchLIXPearl River6 min
Jun 21, 8:05 PM CDTFlash Flood WatchLIXPearl River23 hr
Jun 21, 8:36 PM CDTSpecial Weather StatementLIXAmite, Wilkinson54 min
Jun 21, 8:48 PM CDTSpecial Weather StatementLIXHancock42 min
Jun 21, 9:01 PM CDTSevere Thunderstorm WarningLIXAmite, Wilkinson29 min
Jun 21, 9:33 PM CDTSpecial Weather StatementLIXHarrison42 min
Jun 21, 9:44 PM CDTFlash Flood WarningLIXHancock, Harrison2 hr
Jun 21, 10:09 PM CDTSpecial Weather StatementLIXJackson36 min
Jun 21, 10:27 PM CDTFlash Flood WarningLIXJackson93 min
Jun 22, 6:00 AM CDTRiver Flood WarningLIXHarrison69 hr
Jun 22, 6:02 AM CDTRiver Flood WarningLIXHarrison47 hr
Jun 22, 9:39 AM CDTRiver Flood WarningLIXJackson4 days
Jun 22, 5:10 PM CDTAreal Flood AdvisoryLIXHarrison, Jackson2 hr
Jun 22, 6:14 PM CDTFlash Flood WarningLIXHarrison, Jackson108 min
Jun 22, 6:32 PM CDTSpecial Weather StatementLIXHarrison28 min
Jun 21, 8:18 PM CDTSpecial Weather StatementLIXOrleans27 min
Jun 21, 8:19 PM CDTSpecial Marine WarningLIX41 min
Jun 21, 8:24 PM CDTSpecial Marine WarningLIX66 min
Jun 21, 9:49 PM CDTSpecial Marine WarningLIX26 min
Jun 21, 10:11 PM CDTSpecial Weather StatementLIXTangipahoa, Washington34 min
Jun 21, 10:14 PM CDTSpecial Marine WarningLIX61 min
Jun 22, 5:18 AM CDTSpecial Marine WarningLIX57 min
Jun 22, 6:16 AM CDTSpecial Marine WarningLIX59 min
Jun 22, 8:10 AM CDTSpecial Marine WarningLIX25 min
Jun 22, 12:38 PM CDTSpecial Marine WarningLIX67 min
Jun 22, 4:02 PM CDTSpecial Weather StatementLIXSaint John the Baptist28 min
Jun 22, 4:54 PM CDTAreal Flood AdvisoryLIXAscension, East Baton Rouge, Livingston111 min

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; the sounding from the Mesonet's radiosonde archive.