Alert archive / Mississippi / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 45, NWS New Orleans, LA

April 10, 2021Harrison County, Jackson County, Mississippi

NWS New Orleans, LA issued this severe thunderstorm warning at Apr 10, 2021, 3:55 AM CDT for Harrison County, Jackson 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: Apr 10, 2021, 3:55 AM CDT (08:55 UTC)
Expired: Apr 10, 2021, 4:09 AM CDT
In force: 14 min
Issued by: NWS New Orleans, LA
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Harrison County, MS, Jackson County, MS

The radar

The Mobile radar (KMOB), 54 km from the middle of the area, began a volume at 08:58 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.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Apr 10, 12:16 AM CDT	Tornado Watch	SPC	7 hr

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 00:00Z, 8.9 hours before the alert went out and 97 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 2977 J/kg
Mixed-layer CIN: -20 J/kg
Mixed-layer LCL: 599 m above ground
0-6 km bulk shear: 39 kt
0-1 km storm-relative helicity: 243 m²/s²
0-3 km storm-relative helicity: 269 m²/s²
Significant tornado parameter: 3.4
Supercell composite: 18.1

Open this sounding in Storm Lab

The text

As transmitted.

085 
WUUS54 KLIX 100855
SVRLIX
MSC047-059-100945-
/O.NEW.KLIX.SV.W.0045.210410T0855Z-210410T0945Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service New Orleans LA
355 AM CDT Sat Apr 10 2021

The National Weather Service in New Orleans has issued a

* Severe Thunderstorm Warning for...
  Eastern Harrison County in southern Mississippi...
  Jackson County in southern Mississippi...

* Until 445 AM CDT.

* At 355 AM CDT, a severe thunderstorm was located over Gulfport,
  moving east at 45 mph.

  HAZARD...60 mph wind gusts and quarter size hail.

  SOURCE...Radar indicated.

  IMPACT...Hail damage to vehicles is expected. Expect wind damage 
           to roofs, siding, and trees.

* Locations impacted include...
  Gulfport, Biloxi, Ocean Springs, Long Beach, Moss Point, St.
  Martin, Escatawpa, Gautier, D'iberville, Wade, Latimer, Big Point,
  Lyman, Helena, Gulf Hills, Hurley, Vancleave, Gulf Park Estates,
  Hickory Hills and Gulfport Airport.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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

&&

LAT...LON 3035 8840 3036 8845 3032 8847 3034 8851
      3035 8857 3037 8859 3037 8861 3034 8873
      3043 8884 3043 8893 3042 8901 3040 8886
      3039 8900 3033 8919 3050 8917 3074 8867
      3074 8841
TIME...MOT...LOC 0855Z 251DEG 40KT 3043 8904 

HAIL...1.00IN
WIND...60MPH
 
$$

MEFFER

1 follow-up statement

422 
WWUS54 KLIX 100909
SVSLIX

Severe Weather Statement
National Weather Service New Orleans LA
409 AM CDT Sat Apr 10 2021

MSC047-059-100919-
/O.CAN.KLIX.SV.W.0045.000000T0000Z-210410T0945Z/
Harrison MS-Jackson MS-
409 AM CDT Sat Apr 10 2021

...THE SEVERE THUNDERSTORM WARNING FOR EASTERN HARRISON AND JACKSON
COUNTIES IS CANCELLED...
                
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning has been cancelled.  However heavy rain is
still possible with this thunderstorm.

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

LAT...LON 3035 8840 3036 8845 3032 8847 3034 8851
      3035 8857 3037 8859 3037 8861 3034 8873
      3043 8884 3043 8893 3042 8901 3040 8886
      3039 8900 3033 8919 3050 8917 3074 8867
      3074 8841
TIME...MOT...LOC 0908Z 251DEG 40KT 3048 8886 

$$

MEFFER

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 9, 11:57 PM CDT	Severe Thunderstorm Warning	LIX	Amite, Pike	36 min
Apr 10, 12:12 AM CDT	Severe Thunderstorm Warning	LIX	Walthall	33 min
Apr 10, 12:14 AM CDT	Special Weather Statement	LIX	Wilkinson	46 min
Apr 10, 12:41 AM CDT	Severe Thunderstorm Warning	LIX	Pearl River	11 min
Apr 10, 12:46 AM CDT	Severe Thunderstorm Warning	LIX	Amite, Pike, Walthall	43 min
Apr 10, 1:33 AM CDT	Special Weather Statement	LIX	Pearl River	42 min
Apr 10, 1:45 AM CDT	Tornado Warning	LIX	Wilkinson	45 min
Apr 10, 1:52 AM CDT	Special Weather Statement	LIX	Pearl River	38 min
Apr 10, 2:01 AM CDT	Severe Thunderstorm Warning	LIX	Pearl River	29 min
Apr 10, 2:05 AM CDT	Tornado Warning	LIX	Pearl River	10 min
Apr 10, 2:42 AM CDT	Severe Thunderstorm Warning	LIX	Hancock, Harrison	33 min
Apr 10, 2:58 AM CDT	Severe Thunderstorm Warning	LIX	Amite, Pike	35 min
Apr 10, 3:11 AM CDT	Severe Thunderstorm Warning	LIX	Harrison, Jackson	49 min
Apr 10, 3:20 AM CDT	Severe Thunderstorm Warning	LIX	Amite, Wilkinson	33 min
Apr 10, 3:29 AM CDT	Severe Thunderstorm Warning	LIX	Harrison, Jackson	31 min
Apr 10, 3:36 AM CDT	Special Weather Statement	LIX	Pearl River	39 min
Apr 10, 4:06 AM CDT	Flash Flood Warning	LIX	Hancock, Pearl River	3 hr
Apr 10, 5:07 AM CDT	Special Weather Statement	LIX	Hancock	23 min
Apr 10, 5:35 AM CDT	Special Weather Statement	LIX	Harrison	25 min
Apr 10, 6:02 AM CDT	Areal Flood Advisory	LIX	Jackson	3 hr
Apr 10, 9:49 AM CDT	River Flood Warning	LIX	Pike, Walthall	56 hr
Apr 10, 9:58 AM CDT	River Flood Warning	LIX	Harrison	25 hr

Nearby

Severe Thunderstorm Warnings in Mississippi, 2021 Every 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; radar from the NEXRAD Level II archive.