Alert archive / Mississippi / Tornado Warnings in 2021

Tornado Warning 57, NWS New Orleans, LA

August 30, 2021Harrison County, Mississippi

NWS New Orleans, LA issued this tornado warning at Aug 30, 2021, 7:37 AM CDT for Harrison County, Mississippi. It was in force for 23 min. 6 reports 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 30, 2021, 7:37 AM CDT (12:37 UTC)
Expired
Aug 30, 2021, 8:00 AM CDT
In force
23 min
Issued by
NWS New Orleans, LA
Area
Storm-based polygon
Tornado
Radar indicated
Hail
0.0 in

County Harrison County, MS

The radar

The Mobile radar (KMOB), 77 km from the middle of the area, began a volume at 12:41 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

What was reported inside it

TimeReportWhereRemark
Aug 30, 7:44 AM CDTTORNADO1 E Gulfport, MSANOTHER EF-0 TORNADO TOUCHED DOWN IN GULFPORT, MS, SNAPPING NUMEROUS TREES AND DAMAGING SEVERAL ROOFS IN THE NEIGHBORHOOD BETWEEN 26TH AND 28TH STREETS AND ROBERTS AND HEWES AVENUES. IT THEN TRACKED NORTHEAST FOR AT LEAST A HALF MILE, PRODUCING MINOR ROOF DAMA
Aug 30, 7:49 AM CDTTORNADO4 E Gulfport, MSA WATERSPOUT LIKELY MOVED ONSHORE NEAR THE GREAT SOUTHERN GOLF CLUB DURING THE MORNING OF AUGUST 30. SEVERAL SNAPPED AND UPROOTED TREES WERE SEEN FROM NOAA AERIAL IMAGERY IN THE GULF CLUB AND IN A WOODED AREA TO THE NORTHEAST OF THE CLUB. THE TORNADO TRACKED T
Aug 30, 7:49 AM CDTTORNADO4 E Gulfport, MSCORRECTS PREVIOUS TORNADO REPORT FROM 4 E GULFPORT. A WATERSPOUT LIKELY MOVED ONSHORE NEAR THE GREAT SOUTHERN GOLF CLUB DURING THE MORNING OF AUGUST 30. SEVERAL SNAPPED AND UPROOTED TREES WERE SEEN FROM NOAA AERIAL IMAGERY IN THE GULF CLUB AND IN A WOODED AREA
Aug 30, 7:50 AM CDTTORNADO5 E Gulfport, MSA TORNADO TOUCHED DOWN JUST NORTH OF THE EDGEWATER MALL NEAR RUE PETIT BOIS WHERE AN UPROOTED TREE AND MINOR ROOF DAMAGE OCCURRED. NUMEROUS SHINGLES WERE MISSING FROM A BANK ON PASS ROAD WHILE A PORTION OF A ROOF WAS TORN OFF A DUNKIN DONUTS. THE TORNADO TRACK
Aug 30, 7:50 AM CDTTORNADO5 E Gulfport, MSCORRECTS PREVIOUS TORNADO REPORT FROM 5 E GULFPORT. A TORNADO TOUCHED DOWN JUST NORTH OF THE EDGEWATER MALL NEAR RUE PETIT BOIS WHERE AN UPROOTED TREE AND MINOR ROOF DAMAGE OCCURRED. NUMEROUS SHINGLES WERE MISSING FROM A BANK ON PASS ROAD WHILE A PORTION OF A
Aug 30, 7:56 AM CDTTORNADO5 W Biloxi, MSA TORNADO TOUCHED DOWN JUST NORTH OF THE MISSISSIPPI COAST COLISEUM. A HALF DOZEN HOUSES IN A COMMUNITY ALONG PINEWOOD DR AND ARBOR DR SUSTAINED MINOR ROOF DAMAGE. AN AIR CONDITIONER WAS BLOWN OFF ITS PAD WHILE SEVERAL TREES AND LARGE BRANCHES WERE SNAPPED. TH

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 30, 5:48 AM CDTTornado WatchSPC10 hr

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 0.6 hours before the alert went out and 71 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 2021-08-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 881 joules per kilogram.LCLEL10008507005003002001001 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 2021-08-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 386 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
881 J/kg
Mixed-layer CIN
-1 J/kg
Mixed-layer LCL
560 m above ground
0-6 km bulk shear
39 kt
0-1 km storm-relative helicity
386 m²/s²
0-3 km storm-relative helicity
386 m²/s²
Significant tornado parameter
1.1
Supercell composite
9.7

Open this sounding in Storm Lab

The text

As transmitted.

113 
WFUS54 KLIX 301237
TORLIX
MSC047-301300-
/O.NEW.KLIX.TO.W.0057.210830T1237Z-210830T1300Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service New Orleans LA
Issued by National Weather Service Lake Charles LA
737 AM CDT Mon Aug 30 2021

The National Weather Service in New Orleans has issued a

* Tornado Warning for...
  Eastern Harrison County in southern Mississippi...

* Until 800 AM CDT.
    
* At 736 AM CDT, a severe thunderstorm capable of producing a tornado
  was located near Long Beach, moving northeast at 40 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...
  Gulfport and Biloxi around 755 AM CDT.

Other locations impacted by this tornadic thunderstorm include
Gulfport Airport.

This includes Interstate 10 in Mississippi between mile markers 33
and 44.
 
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.

&&

LAT...LON 3043 8893 3042 8895 3043 8899 3042 8901
      3041 8899 3042 8898 3041 8894 3039 8894
      3039 8900 3037 8909 3036 8910 3035 8914
      3061 8906 3063 8888
TIME...MOT...LOC 1236Z 207DEG 33KT 3032 8910 

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

$$

K. Kuyper

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 29, 8:22 PM CDTTornado WarningLIXHancock, Pearl River38 min
Aug 29, 9:04 PM CDTTornado WarningLIXHancock, Harrison, Pearl River26 min
Aug 29, 9:05 PM CDTRiver Flood WarningLIXHancock, Pearl River12 days
Aug 29, 9:05 PM CDTRiver Flood WarningLIXPike, Walthall38 hr
Aug 29, 9:05 PM CDTRiver Flood WarningLIXHancock, Pearl River11 days
Aug 29, 9:06 PM CDTRiver Flood WarningLIXJackson9 days
Aug 29, 9:32 PM CDTTornado WarningLIXHancock, Pearl River13 min
Aug 29, 9:36 PM CDTTornado WarningLIXHancock, Harrison, Pearl River24 min
Aug 29, 10:01 PM CDTTornado WarningLIXHancock, Harrison, Pearl River14 min
Aug 29, 10:34 PM CDTTornado WarningLIXHancock, Harrison, Pearl River41 min
Aug 29, 11:45 PM CDTTornado WarningLIXHancock, Harrison31 min
Aug 30, 12:41 AM CDTTornado WarningLIXHarrison, Jackson49 min
Aug 30, 2:39 AM CDTFlash Flood Warning Considerable damage threatLIXHancock, Harrison, Jackson, Pearl River9 hr
Aug 30, 2:47 AM CDTTornado WarningLIXHarrison, Jackson47 min
Aug 30, 2:55 AM CDTFlash Flood Warning Considerable damage threatLIXAmite, Pike, Walthall5 hr
Aug 30, 2:55 AM CDTTornado WarningLIXJackson65 min
Aug 30, 3:55 AM CDTFlash Flood WarningLIXAmite, Pike, Walthall5 hr
Aug 30, 4:11 AM CDTFlash Flood WarningLIXHarrison, Jackson8 hr
Aug 30, 5:43 AM CDTFlash Flood WarningLIXPearl River5 hr
Aug 30, 7:28 AM CDTTornado WarningLIXJackson22 min
Aug 30, 8:02 AM CDTTornado WarningLIXHarrison, Jackson28 min
Aug 30, 9:30 AM CDTTornado WarningLIXJackson60 min
Aug 30, 10:53 AM CDTAreal Flood WarningLIXHancock, Pearl River35 hr
Aug 30, 11:04 AM CDTAreal Flood WarningLIXPearl River, Pike, Walthall35 hr
Aug 30, 11:17 AM CDTTornado WarningLIXJackson28 min
Aug 30, 11:34 AM CDTAreal Flood WarningLIXHancock, Harrison, Jackson, Pearl River34 hr
Aug 30, 12:33 PM CDTFlash Flood Warning EmergencyConsiderable damage threatLIXHarrison, Jackson3 hr
Aug 30, 2:57 PM CDTHeat AdvisoryLIXPearl River26 hr
Aug 30, 3:51 PM CDTAreal Flood WarningLIXHarrison, Jackson30 hr

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; radar from the NEXRAD Level II archive.