Alert archive / Louisiana / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 68, NWS New Orleans, LA

April 15, 2021Pike County, Mississippi; Saint Helena Parish, Tangipahoa Parish, Washington Parish, Louisiana

NWS New Orleans, LA issued this severe thunderstorm warning at Apr 15, 2021, 2:38 AM CDT for Pike County, Mississippi; Saint Helena Parish, Tangipahoa Parish, Washington Parish, Louisiana. It was in force for 27 min. 1 report 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 15, 2021, 2:38 AM CDT (07:38 UTC)
Expired
Apr 15, 2021, 3:05 AM CDT
In force
27 min
Issued by
NWS New Orleans, LA
Area
Storm-based polygon
Hail
1.0 in
Wind
50.0 mph

Counties Saint Helena Parish, LA, Tangipahoa Parish, LA, Washington Parish, LA, Pike County, MS

What was reported inside it

TimeReportWhereRemark
Apr 15, 2:40 AM CDTHAIL 1Kentwood, LAREPORT RELAYED VIA BROADCAST MEDIA OF A PICTURE OF HAIL ESTIMATED TO 1 INCH IN DIAMETER IN THE KENTWOOD AREA.

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

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 00:00Z, 7.6 hours before the alert went out and 102 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 2021-04-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 5 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 00:00Z on 2021-04-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 311 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
5 J/kg
Mixed-layer CIN
-620 J/kg
Mixed-layer LCL
709 m above ground
0-6 km bulk shear
61 kt
0-1 km storm-relative helicity
311 m²/s²
0-3 km storm-relative helicity
272 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

Open this sounding in Storm Lab

The text

As transmitted.

330 
WUUS54 KLIX 150738
SVRLIX
LAC091-105-117-MSC113-150830-
/O.NEW.KLIX.SV.W.0068.210415T0738Z-210415T0830Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service New Orleans LA
238 AM CDT Thu Apr 15 2021

The National Weather Service in New Orleans has issued a

* Severe Thunderstorm Warning for...
  East central St. Helena Parish in southeastern Louisiana...
  Northern Tangipahoa Parish in southeastern Louisiana...
  Northwestern Washington Parish in southeastern Louisiana...
  Southeastern Pike County in southern Mississippi...

* Until 330 AM CDT.

* At 237 AM CDT, a severe thunderstorm was located near Kentwood, or
  9 miles east of Greensburg, moving northeast at 40 mph.

  HAZARD...Quarter size hail.

  SOURCE...Radar indicated.

  IMPACT...Damage to vehicles is expected.

* Locations impacted include...
  Kentwood, Osyka, Mount Herman, Wilmer and Tangipahoa. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3079 9060 3090 9064 3112 9026 3081 9027
TIME...MOT...LOC 0737Z 242DEG 34KT 3088 9052 

HAIL...1.00IN
WIND...<50MPH
 
$$

CAB
4 follow-up statements
646 
WWUS54 KLIX 150739
SVSLIX

Severe Weather Statement
National Weather Service New Orleans LA
239 AM CDT Thu Apr 15 2021

LAC091-150749-
/O.CAN.KLIX.SV.W.0068.000000T0000Z-210415T0830Z/
St. Helena LA-
239 AM CDT Thu Apr 15 2021

...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL ST. HELENA PARISH
IS CANCELLED...
    
The severe thunderstorm which prompted the warning has moved out of 
the warned area. Therefore, the warning has been cancelled.

LAT...LON 3112 9026 3081 9027 3079 9057 3094 9057
TIME...MOT...LOC 0739Z 242DEG 34KT 3089 9050 

$$

LAC105-117-MSC113-150830-
/O.CON.KLIX.SV.W.0068.000000T0000Z-210415T0830Z/
Tangipahoa LA-Washington LA-Pike MS-
239 AM CDT Thu Apr 15 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 330 AM CDT
FOR NORTHERN TANGIPAHOA...NORTHWESTERN WASHINGTON PARISHES IN
SOUTHEASTERN LOUISIANA AND SOUTHEASTERN PIKE COUNTIES...

At 239 AM CDT, a severe thunderstorm was located near Kentwood, or 10
miles north of Amite, moving northeast at 40 mph.

HAZARD...Half dollar size hail.

SOURCE...Radar indicated.

IMPACT...Damage to vehicles is expected.

Locations impacted include...
Kentwood, Osyka, Mount Herman, Wilmer and Tangipahoa. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3112 9026 3081 9027 3079 9057 3094 9057
TIME...MOT...LOC 0739Z 242DEG 34KT 3089 9050 

HAIL...1.25IN
WIND...<50MPH
 
$$

CAB
519 
WWUS54 KLIX 150746
SVSLIX

Severe Weather Statement
National Weather Service New Orleans LA
246 AM CDT Thu Apr 15 2021

LAC105-117-MSC113-150830-
/O.CON.KLIX.SV.W.0068.000000T0000Z-210415T0830Z/
Tangipahoa LA-Washington LA-Pike MS-
246 AM CDT Thu Apr 15 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 330 AM CDT
FOR NORTHERN TANGIPAHOA...NORTHWESTERN WASHINGTON PARISHES IN
SOUTHEASTERN LOUISIANA AND SOUTHEASTERN PIKE COUNTIES...

At 246 AM CDT, a severe thunderstorm was located near Kentwood, or 14
miles north of Amite, moving northeast at 40 mph.

HAZARD...Two inch hail.

SOURCE...Radar indicated.

IMPACT...People and animals outdoors will be injured. Expect damage 
         to roofs, siding, windows, and vehicles.

Locations impacted include...
Kentwood, Osyka, Mount Herman and Tangipahoa. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3112 9026 3083 9028 3082 9056 3094 9057
TIME...MOT...LOC 0746Z 239DEG 33KT 3093 9044 

HAIL...2.00IN
WIND...<50MPH
 
$$

CAB
761 
WWUS54 KLIX 150755
SVSLIX

Severe Weather Statement
National Weather Service New Orleans LA
255 AM CDT Thu Apr 15 2021

LAC105-117-MSC113-150830-
/O.CON.KLIX.SV.W.0068.000000T0000Z-210415T0830Z/
Tangipahoa LA-Washington LA-Pike MS-
255 AM CDT Thu Apr 15 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 330 AM CDT
FOR NORTH CENTRAL TANGIPAHOA...NORTHWESTERN WASHINGTON PARISHES IN
SOUTHEASTERN LOUISIANA AND SOUTHEASTERN PIKE COUNTIES...

At 255 AM CDT, a severe thunderstorm was located over Mount Herman,
or 13 miles northwest of Franklinton, moving northeast at 40 mph.

HAZARD...Quarter size hail.

SOURCE...Public.

IMPACT...Damage to vehicles is expected.

Locations impacted include...
Mount Herman.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3086 9028 3087 9045 3099 9043 3112 9026
TIME...MOT...LOC 0755Z 243DEG 34KT 3095 9033 

HAIL...1.00IN
WIND...<50MPH
 
$$

CAB
930 
WWUS54 KLIX 150805
SVSLIX

Severe Weather Statement
National Weather Service New Orleans LA
305 AM CDT Thu Apr 15 2021

LAC105-117-MSC113-150815-
/O.CAN.KLIX.SV.W.0068.000000T0000Z-210415T0830Z/
Tangipahoa LA-Washington LA-Pike MS-
305 AM CDT Thu Apr 15 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTH CENTRAL TANGIPAHOA...
NORTHWESTERN WASHINGTON PARISHES IN SOUTHEASTERN LOUISIANA AND
SOUTHEASTERN PIKE COUNTIES IS CANCELLED...
        
The storm which prompted the warning has moved out of the area.
Therefore, the warning has been cancelled.

LAT...LON 3086 9028 3087 9045 3099 9043 3112 9026
TIME...MOT...LOC 0804Z 242DEG 34KT 3099 9023 

$$

CAB

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 14, 9:04 PM CDTRiver Flood WarningLIXPearl River4 days
Apr 14, 9:34 PM CDTSpecial Weather StatementLIXHancock71 min
Apr 15, 2:44 AM CDTSpecial Weather StatementLIXPearl River61 min
Apr 15, 3:04 AM CDTSevere Thunderstorm WarningLIXJackson41 min
Apr 15, 3:10 AM CDTSpecial Weather StatementLIXWalthall65 min
Apr 15, 3:16 AM CDTFlash Flood WarningLIXHancock, Harrison3 hr
Apr 15, 3:26 AM CDTSpecial Weather StatementLIXGeorge34 min
Apr 15, 3:35 AM CDTFlash Flood WarningLIXHarrison, Jackson3 hr
Apr 15, 3:40 AM CDTSpecial Weather StatementLIXWilkinson95 min
Apr 15, 3:49 AM CDTSevere Thunderstorm WarningLIXJackson41 min
Apr 15, 3:59 AM CDTSpecial Weather StatementLIXWilkinson76 min
Apr 15, 4:34 AM CDTSpecial Weather StatementLIXJackson56 min
Apr 15, 4:36 AM CDTSevere Thunderstorm WarningLIXAmite, Wilkinson24 min
Apr 15, 4:44 AM CDTSevere Thunderstorm WarningLIXJackson31 min
Apr 15, 6:40 AM CDTRiver Flood WarningLIXPearl River4 days
Apr 15, 6:44 AM CDTRiver Flood WarningLIXPike33 hr
Apr 15, 7:43 AM CDTRiver Flood WarningLIXHarrison51 hr
Apr 14, 7:57 PM CDTSpecial Weather StatementLIXPlaquemines63 min
Apr 14, 8:00 PM CDTSpecial Marine WarningLIX2 hr
Apr 14, 8:22 PM CDTSpecial Marine WarningLIX113 min
Apr 14, 9:12 PM CDTRiver Flood WarningLIXEast Baton Rouge72 hr
Apr 14, 9:18 PM CDTRiver Flood WarningLIXSaint Helena62 hr
Apr 14, 9:18 PM CDTRiver Flood WarningLIXSaint Helena70 hr
Apr 14, 9:18 PM CDTRiver Flood WarningLIXLivingston4 days
Apr 14, 9:36 PM CDTSpecial Marine WarningLIX84 min
Apr 14, 11:04 PM CDTAreal Flood AdvisoryLIXOrleans, Saint Tammany3 hr
Apr 14, 11:06 PM CDTSpecial Marine WarningLIX84 min
Apr 14, 11:22 PM CDTSpecial Weather StatementLIXTangipahoa53 min
Apr 14, 11:36 PM CDTAreal Flood AdvisoryLIXSaint Tammany, Tangipahoa3 hr
Apr 15, 12:10 AM CDTFlash Flood WarningLIXSaint Tammany2 hr
Apr 15, 12:15 AM CDTSpecial Marine WarningLIX60 min
Apr 15, 12:24 AM CDTSpecial Weather StatementLIXSaint Tammany81 min
Apr 15, 12:33 AM CDTSevere Thunderstorm WarningLIXSaint Tammany57 min
Apr 15, 12:49 AM CDTFlash Flood WarningLIXSaint Tammany106 min
Apr 15, 1:03 AM CDTSpecial Marine WarningLIX87 min
Apr 15, 1:07 AM CDTSpecial Marine WarningLIX98 min
Apr 15, 1:38 AM CDTSpecial Marine WarningLIX97 min
Apr 15, 2:01 AM CDTSpecial Weather StatementLIXSaint Helena44 min
Apr 15, 2:03 AM CDTSpecial Weather StatementLIXWashington57 min
Apr 15, 2:27 AM CDTSpecial Marine WarningLIX33 min
Apr 15, 3:23 AM CDTSpecial Marine WarningLIX22 min
Apr 15, 3:50 AM CDTSpecial Marine WarningLIX55 min
Apr 15, 4:06 AM CDTSmall Craft AdvisoryLIX12 hr
Apr 15, 4:46 AM CDTSpecial Marine WarningLIX44 min
Apr 15, 4:58 AM CDTSpecial Weather StatementLIXSaint Helena47 min
Apr 15, 5:03 AM CDTSpecial Weather StatementLIXPointe Coupee42 min
Apr 15, 5:59 AM CDTSpecial Weather StatementLIXAscension, Livingston, Saint James31 min
Apr 15, 6:11 AM CDTSpecial Weather StatementLIXWashington34 min
Apr 15, 6:16 AM CDTSpecial Marine WarningLIX59 min
Apr 15, 6:22 AM CDTSpecial Weather StatementLIXAssumption53 min
Apr 15, 6:28 AM CDTSevere Thunderstorm WarningLIXAscension, Saint Charles, Saint James, Saint John the Baptist18 min
Apr 15, 6:38 AM CDTRiver Flood WarningLIXWashington3 days
Apr 15, 7:01 AM CDTSpecial Weather StatementLIXOrleans, Saint Charles44 min
Apr 15, 7:10 AM CDTSpecial Marine WarningLIX65 min
Apr 15, 7:40 AM CDTSpecial Weather StatementLIXTerrebonne50 min
Apr 15, 7:45 AM CDTSpecial Weather StatementLIXOrleans30 min
Apr 15, 7:57 AM CDTSpecial Marine WarningLIX63 min
Apr 15, 8:01 AM CDTSpecial Marine WarningLIX29 min
Apr 15, 8:04 AM CDTSpecial Marine WarningLIX56 min
Apr 15, 8:16 AM CDTSpecial Weather StatementLIXJefferson, Plaquemines89 min
Apr 15, 8:40 AM CDTSpecial Marine WarningLIX95 min
Apr 15, 8:57 AM CDTSpecial Marine WarningLIX63 min
Apr 15, 9:58 AM CDTSpecial Marine WarningLIX92 min
Apr 15, 10:04 AM CDTRiver Flood WarningLIXAscension, Livingston21 days
Apr 15, 10:04 AM CDTRiver Flood WarningLIXAscension, Livingston5 days
Apr 15, 10:14 AM CDTRiver Flood WarningLIXTangipahoa27 hr
Apr 15, 11:15 AM CDTSpecial Weather StatementLIXLafourche60 min
Apr 15, 11:16 AM CDTRiver Flood WarningLIXTangipahoa21 hr
Apr 15, 11:21 AM CDTSpecial Marine WarningLIX54 min
Apr 15, 11:49 AM CDTSpecial Marine WarningLIX42 min
Apr 15, 12:39 PM CDTSpecial Marine WarningLIX66 min
Apr 15, 12:46 PM CDTSpecial Marine WarningLIX59 min
Apr 15, 1:38 PM CDTSpecial Marine WarningLIX67 min
Apr 15, 1:41 PM CDTSpecial Marine WarningLIX12 min
Apr 15, 2:40 PM CDTSpecial Marine WarningLIX45 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive.