Alert archive / Mississippi / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 181, NWS Jackson, MS

June 7, 2021Claiborne County, Jefferson County, Mississippi

NWS Jackson, MS issued this severe thunderstorm warning at Jun 7, 2021, 2:23 PM CDT for Claiborne County, Jefferson County, Mississippi. It was in force for 52 min. 2 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: Jun 7, 2021, 2:23 PM CDT (19:23 UTC)
Expired: Jun 7, 2021, 3:15 PM CDT
In force: 52 min
Issued by: NWS Jackson, MS
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Claiborne County, MS, Jefferson County, MS

The radar

The Jackson/Brandon,MS radar (KDGX), 103 km from the middle of the area, began a volume at 19:24 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
Jun 7, 2:27 PM CDT	TSTM WND DMG	2 Nnw Lorman, MS	TREE DOWN ACROSS HWY 552.
Jun 7, 2:43 PM CDT	TSTM WND DMG	1 Se Port Gibson, MS	TREE AND POWER LINES DOWN ACROSS HWY 547.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Jackson, MS (KJAN), launched 12:00Z, 7.4 hours before the alert went out and 96 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: 723 J/kg
Mixed-layer CIN: -14 J/kg
Mixed-layer LCL: 564 m above ground
0-6 km bulk shear: 28 kt
0-1 km storm-relative helicity: 115 m²/s²
0-3 km storm-relative helicity: 93 m²/s²
Significant tornado parameter: 0.3
Supercell composite: 1.7

Open this sounding in Storm Lab

The text

As transmitted.

979 
WUUS54 KJAN 071923
SVRJAN
MSC021-063-072015-
/O.NEW.KJAN.SV.W.0181.210607T1923Z-210607T2015Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Jackson MS
223 PM CDT Mon Jun 7 2021

The National Weather Service in Jackson has issued a

* Severe Thunderstorm Warning for...
  Central Claiborne County in southwestern Mississippi...
  North central Jefferson County in southwestern Mississippi...

* Until 315 PM CDT.

* At 223 PM CDT, a severe thunderstorm was located over Lorman, or 26
  miles northeast of Natchez, moving north at 30 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.

* This severe thunderstorm will be near...
  Port Gibson around 245 PM CDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3198 9115 3199 9110 3201 9108 3204 9109
      3204 9113 3207 9113 3205 9110 3205 9108
      3208 9108 3211 9103 3210 9100 3210 9096
      3209 9097 3208 9095 3208 9091 3209 9092
      3209 9090 3206 9082 3174 9102 3179 9120
TIME...MOT...LOC 1923Z 201DEG 26KT 3184 9109 

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

NF

1 follow-up statement

679 
WWUS54 KJAN 071950
SVSJAN

Severe Weather Statement
National Weather Service Jackson MS
250 PM CDT Mon Jun 7 2021

MSC063-072000-
/O.CAN.KJAN.SV.W.0181.000000T0000Z-210607T2015Z/
Jefferson MS-
250 PM CDT Mon Jun 7 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTH CENTRAL JEFFERSON COUNTY
IS CANCELLED...
    
The severe thunderstorm which prompted the warning has moved out of 
the warned area. Therefore, the warning has been cancelled.

LAT...LON 3195 9109 3199 9110 3201 9108 3204 9109
      3205 9108 3208 9108 3211 9103 3210 9100
      3210 9096 3209 9097 3208 9095 3208 9091
      3209 9092 3209 9090 3206 9082 3190 9092
TIME...MOT...LOC 1950Z 206DEG 25KT 3200 9098 

$$

MSC021-072015-
/O.CON.KJAN.SV.W.0181.000000T0000Z-210607T2015Z/
Claiborne MS-
250 PM CDT Mon Jun 7 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 315 PM CDT
FOR CENTRAL CLAIBORNE COUNTY...

At 250 PM CDT, a severe thunderstorm was located over Port Gibson, or
23 miles south of Vicksburg, moving northeast at 30 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.

This severe thunderstorm will remain over mainly rural areas of
central Claiborne County.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3195 9109 3199 9110 3201 9108 3204 9109
      3205 9108 3208 9108 3211 9103 3210 9100
      3210 9096 3209 9097 3208 9095 3208 9091
      3209 9092 3209 9090 3206 9082 3190 9092
TIME...MOT...LOC 1950Z 206DEG 25KT 3200 9098 

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

NF

The office that day

Everything else NWS Jackson, MS issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 7, 11:26 AM CDT	River Flood Warning	JAN	Jones	4 days
Jun 7, 12:38 PM CDT	Special Weather Statement	JAN	Grenada	37 min
Jun 7, 12:57 PM CDT	Special Weather Statement	JAN	Leflore	33 min
Jun 7, 1:29 PM CDT	Special Weather Statement	JAN	Leflore	46 min
Jun 7, 2:15 PM CDT	Special Weather Statement	JAN	Claiborne, Jefferson	30 min
Jun 7, 2:36 PM CDT	Severe Thunderstorm Warning	JAN	Hinds, Madison, Rankin	39 min
Jun 7, 3:01 PM CDT	Severe Thunderstorm Warning	JAN	Claiborne, Hinds, Warren	44 min
Jun 7, 3:15 PM CDT	Special Weather Statement	JAN	Neshoba	30 min
Jun 7, 3:19 PM CDT	Special Weather Statement	JAN	Madison	26 min
Jun 7, 3:29 PM CDT	Severe Thunderstorm Warning	JAN	Hinds, Madison, Yazoo	46 min
Jun 7, 3:47 PM CDT	Severe Thunderstorm Warning	JAN	Leake, Madison, Rankin	43 min
Jun 7, 4:03 PM CDT	Severe Thunderstorm Warning	JAN	Yazoo	42 min
Jun 7, 4:11 PM CDT	Special Weather Statement	JAN	Winston	34 min
Jun 7, 4:17 PM CDT	Severe Thunderstorm Warning	JAN	Attala, Leake, Madison	58 min
Jun 7, 5:08 PM CDT	Special Weather Statement	JAN	Lowndes	52 min
Jun 7, 6:23 PM CDT	Severe Thunderstorm Warning	JAN	Bolivar, Issaquena, Sharkey, Washington	55 min

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.