Alert archive / Mississippi / Tornado Warnings in 2021

Tornado Warning 12, NWS Jackson, MS

March 17, 2021Copiah County, Jefferson County, Lincoln County, Mississippi

NWS Jackson, MS issued this tornado warning at Mar 17, 2021, 4:52 PM CDT for Copiah County, Jefferson County, Lincoln County, Mississippi. It was in force for 37 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: Mar 17, 2021, 4:52 PM CDT (21:52 UTC)
Expired: Mar 17, 2021, 5:29 PM CDT
In force: 37 min
Issued by: NWS Jackson, MS
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.0 in

Counties Copiah County, MS, Jefferson County, MS, Lincoln County, MS

The radar

The Jackson/Brandon,MS radar (KDGX), 88 km from the middle of the area, began a volume at 21:54 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
Mar 17, 11:36 AM CDT	Tornado Watch PDS	SPC	7 hr
Mar 17, 12:57 PM CDT	Tornado Watch PDS	SPC	6 hr

The nearest sounding before it

Jackson, MS (KJAN), launched 12:00Z, 9.9 hours before the alert went out and 85 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: 687 J/kg
Mixed-layer CIN: -86 J/kg
Mixed-layer LCL: 713 m above ground
0-6 km bulk shear: 61 kt
0-1 km storm-relative helicity: 218 m²/s²
0-3 km storm-relative helicity: 178 m²/s²
Significant tornado parameter: 0.6
Supercell composite: 4.9

Open this sounding in Storm Lab

The text

As transmitted.

285 
WFUS54 KJAN 172152
TORJAN
MSC029-063-085-172245-
/O.NEW.KJAN.TO.W.0012.210317T2152Z-210317T2245Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Jackson MS
452 PM CDT Wed Mar 17 2021

The National Weather Service in Jackson has issued a

* Tornado Warning for...
  Northwestern Lincoln County in south central Mississippi...
  Southeastern Jefferson County in southwestern Mississippi...
  Southern Copiah County in central Mississippi...

* Until 545 PM CDT.
    
* At 452 PM CDT, a severe thunderstorm capable of producing a tornado
  was located over New Hope, or 24 miles west of Brookhaven, moving
  northeast at 45 mph.

  HAZARD...Tornado.

  SOURCE...Radar indicated rotation.

  IMPACT...Flying debris will be dangerous to those caught without 
           shelter. Mobile homes will be damaged or destroyed. 
           Damage to roofs, windows, and vehicles will occur.  Tree 
           damage is likely.

* This dangerous storm will be near...
  Union Church around 505 PM CDT.
  Pleasant Hill and Caseyville around 510 PM CDT.
  Allen around 515 PM CDT.
  Barlow around 520 PM CDT.
  Glancy around 530 PM CDT.
  Hazlehurst and Martinsville around 535 PM CDT.
  Gallman around 540 PM CDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

&&

LAT...LON 3161 9096 3179 9074 3194 9059 3194 9018
      3161 9063
TIME...MOT...LOC 2152Z 227DEG 39KT 3156 9087 

TORNADO...RADAR INDICATED
HAIL...0.00IN

$$

CME

3 follow-up statements

248 
WWUS54 KJAN 172211
SVSJAN

Severe Weather Statement
National Weather Service Jackson MS
511 PM CDT Wed Mar 17 2021

MSC063-085-172221-
/O.CAN.KJAN.TO.W.0012.000000T0000Z-210317T2245Z/
Lincoln MS-Jefferson MS-
511 PM CDT Wed Mar 17 2021

...THE TORNADO WARNING FOR NORTHWESTERN LINCOLN AND SOUTHEASTERN
JEFFERSON COUNTIES IS CANCELLED...
    
The tornadic thunderstorm which prompted the warning has moved out 
of the warned area. Therefore, the warning has been cancelled.

A Tornado Watch remains in effect until 700 PM CDT for central
Mississippi. A Tornado Watch also remains in effect until 700 PM CDT
for southwestern Mississippi.

LAT...LON 3179 9074 3194 9059 3194 9028 3170 9062
      3170 9074
TIME...MOT...LOC 2211Z 224DEG 41KT 3172 9069 

$$

MSC029-172245-
/O.CON.KJAN.TO.W.0012.000000T0000Z-210317T2245Z/
Copiah MS-
511 PM CDT Wed Mar 17 2021

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 545 PM CDT FOR
SOUTHWESTERN COPIAH COUNTY...
    
At 511 PM CDT, a severe thunderstorm capable of producing a tornado
was located over Allen, or 17 miles northwest of Brookhaven, moving
northeast at 50 mph.

HAZARD...Tornado.

SOURCE...Radar indicated rotation.

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be damaged or destroyed. Damage 
         to roofs, windows, and vehicles will occur.  Tree damage is 
         likely.

This dangerous storm will be near...
  Barlow around 520 PM CDT.
  Glancy around 525 PM CDT.
  Hazlehurst around 535 PM CDT.
  Gallman around 540 PM CDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

&&

LAT...LON 3179 9074 3194 9059 3194 9028 3170 9062
      3170 9074
TIME...MOT...LOC 2211Z 224DEG 41KT 3172 9069 

TORNADO...RADAR INDICATED
HAIL...0.00IN

$$

CME

641 
WWUS54 KJAN 172227
SVSJAN

Severe Weather Statement
National Weather Service Jackson MS
527 PM CDT Wed Mar 17 2021

MSC029-172245-
/O.CON.KJAN.TO.W.0012.000000T0000Z-210317T2245Z/
Copiah MS-
527 PM CDT Wed Mar 17 2021

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 545 PM CDT FOR CENTRAL
COPIAH COUNTY...
    
At 527 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Glancy, or 9 miles west of Hazlehurst, moving
northeast at 40 mph.

HAZARD...Tornado.

SOURCE...Radar indicated rotation.

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be damaged or destroyed. Damage 
         to roofs, windows, and vehicles will occur.  Tree damage is 
         likely.

This dangerous storm will be near...
  Glancy around 530 PM CDT.
  Hazlehurst around 540 PM CDT.
  Gallman around 545 PM CDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

&&

LAT...LON 3183 9064 3194 9054 3194 9028 3178 9055
TIME...MOT...LOC 2227Z 227DEG 36KT 3184 9055 

TORNADO...RADAR INDICATED
HAIL...0.00IN

$$

CME

878 
WWUS54 KJAN 172229
SVSJAN

Severe Weather Statement
National Weather Service Jackson MS
529 PM CDT Wed Mar 17 2021

MSC029-172239-
/O.CAN.KJAN.TO.W.0012.000000T0000Z-210317T2245Z/
Copiah MS-
529 PM CDT Wed Mar 17 2021

...THE TORNADO WARNING FOR CENTRAL COPIAH COUNTY IS CANCELLED...
                
The storm which prompted the warning has weakened below severe
limits, and no longer appears capable of producing a tornado.
Therefore, the warning has been cancelled.

A Tornado Watch remains in effect until 700 PM CDT for central
Mississippi.

LAT...LON 3183 9064 3194 9054 3194 9028 3178 9055
TIME...MOT...LOC 2228Z 227DEG 39KT 3186 9053 

$$

CME

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 16, 7:01 PM CDT	Tornado Warning	JAN	Copiah, Lawrence, Simpson	31 min
Mar 16, 7:02 PM CDT	Severe Thunderstorm Warning	JAN	Attala	36 min
Mar 16, 7:32 PM CDT	Severe Thunderstorm Warning	JAN	Jefferson Davis, Lawrence, Simpson	58 min
Mar 16, 7:33 PM CDT	Special Weather Statement	JAN	Choctaw	27 min
Mar 16, 8:29 PM CDT	Special Weather Statement	JAN	Simpson	46 min
Mar 16, 8:49 PM CDT	Special Weather Statement	JAN	Kemper, Newton	56 min
Mar 16, 9:50 PM CDT	Special Weather Statement	JAN	Lauderdale	25 min
Mar 17, 6:05 AM CDT	Tornado Warning	JAN	Bolivar	40 min
Mar 17, 6:44 AM CDT	Tornado Warning	JAN	Bolivar	19 min
Mar 17, 11:37 AM CDT	Special Weather Statement	JAN	Jones	38 min
Mar 17, 12:07 PM CDT	Tornado Warning Tornado observed	JAN	Clarke	53 min
Mar 17, 12:22 PM CDT	Tornado Warning	JAN	Clarke, Lauderdale	54 min
Mar 17, 12:50 PM CDT	Tornado Warning	JAN	Copiah, Lawrence, Lincoln	55 min
Mar 17, 1:00 PM CDT	Severe Thunderstorm Warning	JAN	Kemper, Lauderdale, Noxubee	45 min
Mar 17, 1:28 PM CDT	Tornado Warning	JAN	Jones	15 min
Mar 17, 1:45 PM CDT	Tornado Warning	JAN	Jones	21 min
Mar 17, 3:33 PM CDT	Severe Thunderstorm Warning	JAN	Covington, Jefferson Davis, Lawrence	42 min
Mar 17, 4:10 PM CDT	Tornado Warning	JAN	Adams, Franklin	50 min
Mar 17, 4:34 PM CDT	Severe Thunderstorm Warning	JAN	Claiborne, Copiah, Hinds, Jefferson, Warren	56 min
Mar 17, 4:45 PM CDT	Severe Thunderstorm Warning	JAN	Bolivar, Washington	60 min
Mar 17, 4:56 PM CDT	Tornado Warning	JAN	Bolivar, Washington	29 min
Mar 17, 5:15 PM CDT	Severe Thunderstorm Warning	JAN	Hinds, Madison, Rankin, Yazoo	64 min
Mar 17, 5:20 PM CDT	Tornado Warning	JAN	Jasper, Smith	55 min
Mar 17, 5:45 PM CDT	Severe Thunderstorm Warning	JAN	Jefferson Davis, Lawrence, Marion	34 min
Mar 17, 5:55 PM CDT	Severe Thunderstorm Warning	JAN	Attala, Choctaw, Holmes, Leake, Montgomery, Neshoba and 2 more	65 min
Mar 17, 6:05 PM CDT	Severe Thunderstorm Warning	JAN	Leake, Neshoba, Newton, Scott	55 min
Mar 17, 6:12 PM CDT	Severe Thunderstorm Warning	JAN	Covington, Simpson, Smith	48 min
Mar 17, 6:13 PM CDT	Severe Thunderstorm Warning	JAN	Forrest, Lamar	47 min
Mar 17, 6:28 PM CDT	Severe Thunderstorm Warning	JAN	Jasper, Jones	48 min
Mar 17, 6:42 PM CDT	Severe Thunderstorm Warning	JAN	Choctaw, Clay, Kemper, Lowndes, Neshoba, Noxubee and 3 more	76 min

Nearby

Tornado Warnings in Mississippi, 2021 Every tornado warning in 2021 Tornadoes 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.