Alert archive / Mississippi / Tornado Warnings in 2021

Tornado Warning 39, NWS New Orleans, LA

August 29, 2021Hancock County, Harrison County, Mississippi

NWS New Orleans, LA issued this tornado warning at Aug 29, 2021, 6:21 AM CDT for Hancock County, Harrison County, Mississippi. It was in force for 24 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
Aug 29, 2021, 6:21 AM CDT (11:21 UTC)
Expired
Aug 29, 2021, 6:45 AM CDT
In force
24 min
Issued by
NWS New Orleans, LA
Area
Storm-based polygon
Tornado
Radar indicated
Hail
0.0 in

Counties Hancock County, MS, Harrison County, MS

What was reported inside it

TimeReportWhereRemark
Aug 29, 6:23 AM CDTTORNADO1 Wsw Pass Christian, MSA NWS SURVEY TEAM FOUND DAMAGE CONSISTENT WITH AN EF-1 TORNADO. A LIKELY WATERSPOUT MOVED ONSHORE NEAR RAILROAD ST AND HENDERSON AVE WHERE IT CAUSED MINOR ROOF DAMAGE TO SEVERAL HOUSES. THE MOST SIGNIFICANT DAMAGE OCCURRED NEAR WITMAN AVE WHERE A HOUSE SUSTAIN

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
Aug 29, 6:07 AM CDTTornado WatchSPC13 hr

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 00:00Z, 11.4 hours before the alert went out and 38 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 2021-08-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 790 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 2021-08-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 31 square meters per square second.1939Sfc1 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
790 J/kg
Mixed-layer CIN
-14 J/kg
Mixed-layer LCL
1003 m above ground
0-6 km bulk shear
12 kt
0-1 km storm-relative helicity
31 m²/s²
0-3 km storm-relative helicity
67 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

529 
WFUS54 KLIX 291121
TORLIX
MSC045-047-291145-
/O.NEW.KLIX.TO.W.0039.210829T1121Z-210829T1145Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service New Orleans LA
621 AM CDT Sun Aug 29 2021

The National Weather Service in New Orleans has issued a

* Tornado Warning for...
  Southwestern Harrison County in southern Mississippi...
  East central Hancock County in southern Mississippi...

* Until 645 AM CDT.
    
* At 621 AM CDT, a severe thunderstorm capable of producing a tornado
  was located near Long Beach, 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...
  Bay St. Louis, Waveland, Diamondhead and Shoreline Park around 635 
  AM CDT.

This includes Interstate 10 in Mississippi between mile markers 17
and 20.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or 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.

This cluster of thunderstorms is capable of producing tornadoes and
widespread significant wind damage. Do not wait to see or hear the
tornado. For your protection move to an interior room on the lowest
floor of a building.

&&

LAT...LON 3030 8929 3036 8928 3036 8931 3038 8932
      3037 8935 3034 8938 3034 8933 3032 8932
      3029 8934 3031 8940 3042 8935 3033 8918
TIME...MOT...LOC 1121Z 116DEG 30KT 3031 8925 

TORNADO...RADAR INDICATED
MAX HAIL SIZE...0.00 IN

$$

BL
1 follow-up statement
682 
WWUS54 KLIX 291139
SVSLIX

Severe Weather Statement
National Weather Service New Orleans LA
639 AM CDT Sun Aug 29 2021

MSC045-047-291148-
/O.EXP.KLIX.TO.W.0039.000000T0000Z-210829T1145Z/
Harrison MS-Hancock MS-
639 AM CDT Sun Aug 29 2021

...THE TORNADO WARNING FOR SOUTHWESTERN HARRISON AND EAST CENTRAL
HANCOCK COUNTIES WILL EXPIRE AT 645 AM CDT...
        
The storm which prompted the warning has moved out of the area.
Therefore, the warning will be allowed to expire.

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

LAT...LON 3030 8929 3036 8928 3036 8931 3038 8932
      3037 8935 3034 8938 3034 8933 3032 8932
      3029 8934 3031 8940 3042 8935 3033 8918
TIME...MOT...LOC 1138Z 116DEG 30KT 3036 8937 

$$

BL

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 29, 8:10 AM CDTTornado WarningLIXJackson24 min
Aug 29, 2:15 PM CDTTornado WarningLIXHancock, Harrison, Pearl River15 min
Aug 29, 3:07 PM CDTTornado WarningLIXHancock23 min
Aug 29, 5:12 PM CDTTornado WarningLIXHarrison33 min
Aug 29, 5:20 PM CDTFlash Flood WarningLIXHarrison5 hr
Aug 29, 6:09 PM CDTFlash Flood WarningLIXHancock, Harrison8 hr
Aug 29, 6:25 PM CDTTornado WarningLIXHancock35 min
Aug 29, 6:54 PM CDTTornado WarningLIXHancock, Pearl River36 min

Nearby

Tornado 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive.