Alert archive / Mississippi / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 44, NWS New Orleans, LA

April 10, 2021Harrison County, Jackson County, Mississippi

NWS New Orleans, LA issued this severe thunderstorm warning at Apr 10, 2021, 3:29 AM CDT for Harrison County, Jackson County, Mississippi. It was in force for 31 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 10, 2021, 3:29 AM CDT (08:29 UTC)
Expired: Apr 10, 2021, 4:00 AM CDT
In force: 31 min
Issued by: NWS New Orleans, LA
Area: Storm-based polygon
Hail: 1.0 in
Wind: 50.0 mph

Counties Harrison County, MS, Jackson County, MS

The radar

The Mobile radar (KMOB), 69 km from the middle of the area, began a volume at 08:33 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

Time	Report	Where	Remark
Apr 10, 3:40 AM CDT	HAIL 1	Long Beach, MS

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.

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, 8.5 hours before the alert went out and 81 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.

613 
WUUS54 KLIX 100829
SVRLIX
MSC047-059-100900-
/O.NEW.KLIX.SV.W.0044.210410T0829Z-210410T0900Z/

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

The National Weather Service in New Orleans has issued a

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

* Until 400 AM CDT.

* At 329 AM CDT, a severe thunderstorm was located near Gulfport,
  moving east at 45 mph.

  HAZARD...Quarter size hail.

  SOURCE...Radar indicated.

  IMPACT...Damage to vehicles is expected.

* Locations impacted include...
  Gulfport, Biloxi, Ocean Springs, Long Beach, St. Martin, Gautier,
  D'iberville, Gulf Hills, 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 3036 8864 3034 8870 3037 8885 3038 8885
      3038 8878 3041 8884 3043 8885 3042 8901
      3040 8886 3038 8907 3031 8924 3044 8926
      3046 8863
TIME...MOT...LOC 0829Z 271DEG 37KT 3043 8914 

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

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, 3:36 AM CDT	Special Weather Statement	LIX	Pearl River	39 min
Apr 10, 3:55 AM CDT	Severe Thunderstorm Warning	LIX	Harrison, Jackson	14 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.