Alert archive / Louisiana / Tornado Warnings in 2021

Tornado Warning 35, NWS New Orleans, LA

June 18, 2021Saint Tammany Parish, Louisiana; Hancock County, Mississippi

NWS New Orleans, LA issued this tornado warning at Jun 18, 2021, 11:46 PM CDT for Saint Tammany Parish, Louisiana; Hancock County, Mississippi. It was in force for 14 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 18, 2021, 11:46 PM CDT (04:46 UTC)
Expired
Jun 19, 2021, 12:00 AM CDT
In force
14 min
Issued by
NWS New Orleans, LA
Area
Storm-based polygon
Tornado
Radar indicated
Hail
0.0 in

Counties Saint Tammany Parish, LA, Hancock County, MS

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 00:00Z, 4.8 hours before the alert went out and 18 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 2021-06-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 174 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 2021-06-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 108 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
174 J/kg
Mixed-layer CIN
-29 J/kg
Mixed-layer LCL
572 m above ground
0-6 km bulk shear
25 kt
0-1 km storm-relative helicity
108 m²/s²
0-3 km storm-relative helicity
124 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.4

Open this sounding in Storm Lab

The text

As transmitted.

827 
WFUS54 KLIX 190446
TORLIX
LAC103-MSC045-190500-
/O.NEW.KLIX.TO.W.0035.210619T0446Z-210619T0500Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service New Orleans LA
1146 PM CDT Fri Jun 18 2021

The National Weather Service in New Orleans has issued a

* Tornado Warning for...
  Southeastern St. Tammany Parish in southeastern Louisiana...
  Southwestern Hancock County in southern Mississippi...

* Until midnight CDT.
    
* At 1146 PM CDT, a severe thunderstorm capable of producing a
  tornado was located near Pearlington, or 9 miles southwest of
  Waveland, moving northwest at 35 mph.

  HAZARD...Tornado.

  SOURCE...Radar indicated rotation.

  IMPACT...Flying debris will be dangerous to those caught without 
           shelter. Mobile homes will be damaged or destroyed. 
           Damage to roofs, windows, and vehicles will occur.  Tree 
           damage is likely.

* This dangerous storm will be near...
  Pearlington around 1200 AM CDT.

This includes the following Interstates...
 Interstate 10 in Louisiana between mile markers 271 and 273.
 Interstate 10 in Mississippi between mile markers 1 and 7.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to an interior room on the lowest floor of a
sturdy building. Avoid windows. If you are outdoors, in a mobile
home, or in a vehicle, move to the closest substantial shelter and
protect yourself from flying debris.

&&

LAT...LON 3017 8946 3019 8946 3018 8950 3019 8953
      3017 8958 3029 8970 3038 8955 3018 8945
TIME...MOT...LOC 0446Z 146DEG 29KT 3021 8952 

TORNADO...RADAR INDICATED
HAIL...0.00IN

$$

KLG
1 follow-up statement
399 
WWUS54 KLIX 190459
SVSLIX

Severe Weather Statement
National Weather Service New Orleans LA
1159 PM CDT Fri Jun 18 2021

LAC103-MSC045-190509-
/O.EXP.KLIX.TO.W.0035.000000T0000Z-210619T0500Z/
St. Tammany LA-Hancock MS-
1159 PM CDT Fri Jun 18 2021

...THE TORNADO WARNING FOR SOUTHEASTERN ST. TAMMANY PARISH IN
SOUTHEASTERN LOUISIANA AND SOUTHWESTERN HANCOCK COUNTIES WILL EXPIRE
AT MIDNIGHT CDT...
                
The storm which prompted the warning has weakened below severe
limits, and no longer appears capable of producing a tornado.
Therefore, the warning will be allowed to expire.

LAT...LON 3017 8946 3019 8946 3018 8950 3019 8953
      3017 8958 3029 8970 3038 8955 3018 8945
TIME...MOT...LOC 0459Z 146DEG 29KT 3029 8959 

$$

KLG

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 18, 7:15 PM CDTAreal Flood AdvisoryLIXJefferson, Orleans, Plaquemines, Saint Bernard101 min
Jun 18, 8:28 PM CDTSpecial Marine WarningLIX32 min
Jun 18, 8:45 PM CDTSpecial Weather StatementLIXSaint Bernard30 min
Jun 18, 9:02 PM CDTSpecial Weather StatementLIXSaint Bernard28 min
Jun 18, 9:24 PM CDTSpecial Marine WarningLIX21 min
Jun 18, 9:32 PM CDTSpecial Weather StatementLIXSaint Bernard13 min
Jun 18, 9:33 PM CDTSpecial Marine WarningLIX28 min
Jun 18, 9:41 PM CDTSpecial Marine WarningLIX34 min
Jun 18, 9:52 PM CDTAreal Flood AdvisoryLIXSaint Tammany30 min
Jun 18, 10:12 PM CDTSpecial Marine WarningLIX33 min
Jun 18, 10:22 PM CDTFlash Flood WarningLIXSaint Tammany5 hr
Jun 18, 10:28 PM CDTSpecial Marine WarningLIX32 min
Jun 18, 10:56 PM CDTSpecial Marine WarningLIX64 min
Jun 18, 10:59 PM CDTSpecial Marine WarningLIX31 min
Jun 18, 11:16 PM CDTSpecial Marine WarningLIX44 min
Jun 18, 11:40 PM CDTAreal Flood AdvisoryLIXSaint Tammany64 min
Jun 18, 11:41 PM CDTSpecial Marine WarningLIX19 min
Jun 18, 11:43 PM CDTSpecial Marine WarningLIX32 min
Jun 19, 12:04 AM CDTSpecial Marine WarningLIX26 min
Jun 19, 12:26 AM CDTSpecial Marine WarningLIX64 min
Jun 19, 12:32 AM CDTSpecial Marine WarningLIX58 min
Jun 19, 12:44 AM CDTFlash Flood WarningLIXSaint Tammany4 hr
Jun 19, 12:52 AM CDTAreal Flood AdvisoryLIXWashington4 hr
Jun 19, 1:14 AM CDTSpecial Weather StatementLIXSaint Bernard46 min
Jun 19, 1:17 AM CDTSpecial Marine WarningLIX13 min
Jun 19, 1:30 AM CDTSpecial Marine WarningLIX45 min
Jun 19, 1:47 AM CDTSpecial Marine WarningLIX58 min
Jun 19, 2:09 AM CDTSpecial Marine WarningLIX36 min
Jun 19, 2:27 AM CDTSpecial Marine WarningLIX33 min
Jun 19, 2:33 AM CDTSpecial Weather StatementLIXSaint John the Baptist27 min
Jun 19, 3:26 AM CDTSpecial Marine WarningLIX64 min
Jun 19, 10:15 AM CDTSmall Craft AdvisoryLIX17 hr
Jun 18, 11:23 PM CDTTornado WarningLIXHancock, Harrison22 min
Jun 18, 11:39 PM CDTTornado WarningLIXHarrison, Jackson9 min
Jun 19, 12:37 AM CDTTornado WarningLIXHancock, Harrison23 min
Jun 19, 12:53 AM CDTTornado WarningLIXHarrison8 min
Jun 19, 1:52 AM CDTFlash Flood WarningLIXPearl River4 hr
Jun 19, 2:56 AM CDTRiver Flood WarningLIXHancock41 hr
Jun 19, 3:37 AM CDTFlash Flood WarningLIXJackson4 hr
Jun 19, 5:08 AM CDTTornado WarningLIXJackson37 min

Nearby

Tornado Warnings in Louisiana, 2021Tornado Warnings in Mississippi, 2021Every tornado warning in 2021Tornadoes 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.