Alert archive / Mississippi / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 295, NWS Jackson, MS

December 29, 2021Clay County, Lowndes County, Mississippi

NWS Jackson, MS issued this severe thunderstorm warning at Dec 29, 2021, 5:50 PM CST for Clay County, Lowndes County, Mississippi. It was in force for 40 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: Dec 29, 2021, 5:50 PM CST (23:50 UTC)
Expired: Dec 29, 2021, 6:30 PM CST
In force: 40 min
Issued by: NWS Jackson, MS
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Clay County, MS, Lowndes County, MS

The radar

The Columbus AFB radar (KGWX), 29 km from the middle of the area, began a volume at 23:55 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
Dec 29, 12:05 PM CST	Tornado Watch	SPC	7 hr

The nearest sounding before it

Birmingham, AL (KBMX), launched 12:00Z, 11.8 hours before the alert went out and 173 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 690 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: 75 m²/s²
0-3 km storm-relative helicity: 103 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

930 
WUUS54 KJAN 292350
SVRJAN
MSC025-087-300030-
/O.NEW.KJAN.SV.W.0295.211229T2350Z-211230T0030Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Jackson MS
550 PM CST Wed Dec 29 2021

The National Weather Service in Jackson has issued a

* Severe Thunderstorm Warning for...
  Clay County in northeastern Mississippi...
  Northeastern Lowndes County in northeastern Mississippi...

* Until 630 PM CST.

* At 550 PM CST, a severe thunderstorm was located over Griffith, or
  7 miles southeast of Montpelier, 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.

* This severe thunderstorm will be near...
  Pala Alto around 555 PM CST.
  West Point around 605 PM CST.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until 700 PM CST for northeastern
Mississippi.

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

A Tornado Watch remains in effect until 700 PM CST for northeastern
Mississippi.

&&

LAT...LON 3371 8826 3356 8880 3357 8889 3375 8897
      3376 8893 3381 8893 3381 8872 3368 8872
      3367 8849 3365 8851 3367 8847 3368 8841
      3369 8839 3369 8837 3372 8833 3374 8833
      3374 8825 3373 8825
TIME...MOT...LOC 2350Z 247DEG 37KT 3366 8884 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

JNE

1 follow-up statement

345 
WWUS54 KJAN 300012
SVSJAN

Severe Weather Statement
National Weather Service Jackson MS
612 PM CST Wed Dec 29 2021

MSC087-300022-
/O.CAN.KJAN.SV.W.0295.000000T0000Z-211230T0030Z/
Lowndes MS-
612 PM CST Wed Dec 29 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN LOWNDES COUNTY IS
CANCELLED...
    
The severe thunderstorm which prompted the warning has weakened.
Therefore, the warning has been cancelled.

A Tornado Watch remains in effect until 700 PM CST for northeastern
Mississippi.

LAT...LON 3356 8879 3368 8893 3368 8872 3367 8850
      3364 8852 3360 8864
TIME...MOT...LOC 0012Z 247DEG 37KT 3375 8859 

$$

MSC025-300030-
/O.CON.KJAN.SV.W.0295.000000T0000Z-211230T0030Z/
Clay MS-
612 PM CST Wed Dec 29 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 630 PM CST
FOR CENTRAL CLAY COUNTY...

At 612 PM CST, a severe thunderstorm was located near Prairie, or
near Aberdeen, moving northeast 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.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until 700 PM CST for northeastern
Mississippi.

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

&&

LAT...LON 3356 8879 3368 8893 3368 8872 3367 8850
      3364 8852 3360 8864
TIME...MOT...LOC 0012Z 247DEG 37KT 3375 8859 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

JNE

The office that day

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

Issued	Product	Office	Counties	Lasted
Dec 28, 6:29 PM CST	Special Weather Statement	JAN	Warren	31 min
Dec 28, 7:02 PM CST	Special Weather Statement	JAN	Choctaw	28 min
Dec 28, 7:17 PM CST	Special Weather Statement	JAN	Lowndes	28 min
Dec 28, 8:18 PM CST	Special Weather Statement	JAN	Clay	27 min
Dec 28, 8:26 PM CST	Special Weather Statement	JAN	Lincoln	34 min
Dec 28, 9:53 PM CST	Special Weather Statement	JAN	Lowndes	37 min
Dec 28, 10:27 PM CST	Flash Flood Warning	JAN	Clay	3 hr
Dec 28, 10:35 PM CST	Special Weather Statement	JAN	Lowndes	25 min
Dec 29, 12:13 AM CST	Special Weather Statement	JAN	Noxubee	32 min
Dec 29, 2:40 PM CST	Special Weather Statement	JAN	Warren	50 min
Dec 29, 3:39 PM CST	Severe Thunderstorm Warning	JAN	Bolivar, Sunflower	48 min
Dec 29, 3:59 PM CST	Special Weather Statement	JAN	Forrest	46 min
Dec 29, 4:25 PM CST	Severe Thunderstorm Warning	JAN	Grenada, Montgomery, Webster	50 min
Dec 29, 4:36 PM CST	Special Weather Statement	JAN	Carroll	24 min
Dec 29, 4:55 PM CST	Tornado Warning	JAN	Clay, Webster	42 min
Dec 29, 5:45 PM CST	Special Weather Statement	JAN	Neshoba	45 min
Dec 29, 5:52 PM CST	Special Weather Statement	JAN	Winston	38 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.