Alert archive / Mississippi / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 291, NWS Jackson, MS

December 6, 2021Clarke County, Jasper County, Mississippi

NWS Jackson, MS issued this severe thunderstorm warning at Dec 6, 2021, 11:46 AM CST for Clarke County, Jasper County, Mississippi. It was in force for 59 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: Dec 6, 2021, 11:46 AM CST (17:46 UTC)
Expired: Dec 6, 2021, 12:45 PM CST
In force: 59 min
Issued by: NWS Jackson, MS
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Clarke County, MS, Jasper County, MS

The radar

The Jackson/Brandon,MS radar (KDGX), 124 km from the middle of the area, began a volume at 17:50 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
Dec 6, 12:42 PM CST	TSTM WND DMG	2 W Mannassa, MS	POWER LINE DOWN.

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, 5.8 hours before the alert went out and 133 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: 799 J/kg
Mixed-layer CIN: -22 J/kg
Mixed-layer LCL: 551 m above ground
0-6 km bulk shear: 55 kt
0-1 km storm-relative helicity: 261 m²/s²
0-3 km storm-relative helicity: 282 m²/s²
Significant tornado parameter: 1.2
Supercell composite: 6.9

Open this sounding in Storm Lab

The text

As transmitted.

466 
WUUS54 KJAN 061746
SVRJAN
MSC023-061-061845-
/O.NEW.KJAN.SV.W.0291.211206T1746Z-211206T1845Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Jackson MS
1146 AM CST Mon Dec 6 2021

The National Weather Service in Jackson has issued a

* Severe Thunderstorm Warning for...
  Northern Jasper County in east central Mississippi...
  Clarke County in east central Mississippi...

* Until 1245 PM CST.

* At 1145 AM CST, a severe thunderstorm was located near Turnerville,
  or 16 miles northeast of Stringer, moving east at 45 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

  IMPACT...Expect damage to roofs, siding, and trees.

* This severe thunderstorm will be near...
  Paulding around 1150 AM CST.
  Rose Hill around 1155 AM CST.
  Orange and Barnett around 1200 PM CST.
  Stonewall around 1210 PM CST.
  Quitman around 1215 PM CST.
  Sable around 1220 PM CST.
  Sykes and Middleton around 1225 PM CST.
  Snell around 1235 PM CST.

Other locations impacted by this severe thunderstorm include Pachuta
and Montrose.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3211 8844 3197 8847 3197 8925 3222 8923
      3223 8851 3223 8844
TIME...MOT...LOC 1745Z 265DEG 40KT 3208 8912 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

JC

1 follow-up statement

946 
WWUS54 KJAN 061821
SVSJAN

Severe Weather Statement
National Weather Service Jackson MS
1221 PM CST Mon Dec 6 2021

MSC061-061830-
/O.CAN.KJAN.SV.W.0291.000000T0000Z-211206T1845Z/
Jasper MS-
1221 PM CST Mon Dec 6 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN JASPER 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 3197 8847 3197 8891 3222 8891 3223 8844
      3214 8844
TIME...MOT...LOC 1820Z 263DEG 32KT 3206 8876 

$$

MSC023-061845-
/O.CON.KJAN.SV.W.0291.000000T0000Z-211206T1845Z/
Clarke MS-
1221 PM CST Mon Dec 6 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1245 PM CST
FOR CLARKE COUNTY...

At 1220 PM CST, a severe thunderstorm was located over Quitman,
moving east at 35 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...Expect damage to roofs, siding, and trees.

This severe storm will be near...
  Sykes and Middleton around 1235 PM CST.
  Crandall around 1240 PM CST.
  Snell around 1245 PM CST.

Other locations impacted by this severe thunderstorm include Pachuta.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3197 8847 3197 8891 3222 8891 3223 8844
      3214 8844
TIME...MOT...LOC 1820Z 263DEG 32KT 3206 8876 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

JC

The office that day

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

Issued	Product	Office	Counties	Lasted
Dec 6, 4:51 AM CST	Special Weather Statement	JAN	Issaquena	24 min
Dec 6, 5:16 AM CST	Special Weather Statement	JAN	Yazoo	29 min
Dec 6, 5:50 AM CST	Special Weather Statement	JAN	Grenada, Leflore	25 min
Dec 6, 6:19 AM CST	Special Weather Statement	JAN	Grenada, Webster	41 min
Dec 6, 6:50 AM CST	Special Weather Statement	JAN	Clay, Webster	40 min
Dec 6, 6:59 AM CST	Special Weather Statement	JAN	Bolivar	31 min
Dec 6, 7:34 AM CST	Special Weather Statement	JAN	Clay, Lowndes, Oktibbeha	41 min
Dec 6, 7:43 AM CST	Severe Thunderstorm Warning	JAN	Clay, Lowndes, Oktibbeha	47 min
Dec 6, 8:08 AM CST	Special Weather Statement	JAN	Noxubee	37 min
Dec 6, 9:38 AM CST	Severe Thunderstorm Warning	JAN	Hinds, Rankin	52 min
Dec 6, 9:47 AM CST	Special Weather Statement	JAN	Madison	28 min
Dec 6, 10:13 AM CST	Severe Thunderstorm Warning	JAN	Rankin	62 min
Dec 6, 10:22 AM CST	Special Weather Statement	JAN	Copiah	38 min
Dec 6, 11:05 AM CST	Special Weather Statement	JAN	Simpson	40 min
Dec 6, 11:36 AM CST	Special Weather Statement	JAN	Jasper, Smith	39 min
Dec 6, 11:57 AM CST	Special Weather Statement	JAN	Covington, Jones	48 min
Dec 6, 12:21 PM CST	Special Weather Statement	JAN	Clarke	24 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.