Alert archive / Mississippi / Tornado Warnings in 2021

Tornado Warning 15, NWS Jackson, MS

March 17, 2021Kemper County, Mississippi

NWS Jackson, MS issued this tornado warning at Mar 17, 2021, 7:48 PM CDT for Kemper County, Mississippi. It was in force for 27 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: Mar 17, 2021, 7:48 PM CDT (00:48 UTC)
Expired: Mar 17, 2021, 8:15 PM CDT
In force: 27 min
Issued by: NWS Jackson, MS
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.0 in

County Kemper County, MS

The radar

The Columbus AFB radar (KGWX), 130 km from the middle of the area, began a volume at 00:49 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
Mar 17, 7:56 PM CDT	TORNADO	3 W Porterville, MS	THIS BRIEF EF0 TOUCHED DOWN NEAR THE INTERSECTION OF FIRE TOWER AND CHAPEL HILL ROAD. GROUND SURVEY AND DRONE FOOTAGE SHOWED SOME TREES DAMAGED BY BEING UPROOTED OR HAVING BROKEN LIMBS. MANY THANKS TO THE NSSL RESEARCH GROUP FOR THE SURVEY.

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
Mar 17, 6:48 PM CDT	Tornado Watch PDS	SPC	8 hr

The nearest sounding before it

Birmingham, AL (KBMX), launched 00:00Z, 0.8 hours before the alert went out and 167 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: 188 J/kg
Mixed-layer CIN: -25 J/kg
Mixed-layer LCL: 669 m above ground
0-6 km bulk shear: 63 kt
0-1 km storm-relative helicity: 336 m²/s²
0-3 km storm-relative helicity: 465 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.6

Open this sounding in Storm Lab

The text

As transmitted.

244 
WFUS54 KJAN 180048
TORJAN
MSC069-180115-
/O.NEW.KJAN.TO.W.0015.210318T0048Z-210318T0115Z/

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

The National Weather Service in Jackson has issued a

* Tornado Warning for...
  Eastern Kemper County in east central Mississippi...

* Until 815 PM CDT.
    
* At 748 PM CDT, a severe thunderstorm capable of producing a tornado
  was located near Blackwater, or 7 miles north of Meridian Station,
  moving northeast at 55 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...
  Porterville around 755 PM CDT.
  Electric Mills around 800 PM CDT.

Other locations impacted by this tornadic thunderstorm include
Scooba.

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 3272 8837 3259 8857 3259 8866 3269 8868
      3293 8842 3293 8835
TIME...MOT...LOC 0048Z 231DEG 47KT 3265 8860 

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

$$

CME

2 follow-up statements

794 
WWUS54 KJAN 180054
SVSJAN

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

MSC069-180115-
/O.CON.KJAN.TO.W.0015.000000T0000Z-210318T0115Z/
Kemper MS-
754 PM CDT Wed Mar 17 2021

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 815 PM CDT FOR EASTERN
KEMPER COUNTY...
    
At 754 PM CDT, a severe thunderstorm capable of producing a tornado
was located over Porterville, or 10 miles north of Lauderdale, moving
northeast at 55 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...
  Electric Mills around 800 PM CDT.

Other locations impacted by this tornadic thunderstorm include
Scooba.

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 3262 8852 3264 8857 3273 8861 3293 8842
      3293 8835 3272 8837
TIME...MOT...LOC 0054Z 234DEG 46KT 3268 8851 

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

$$

CME

048 
WWUS54 KJAN 180102
SVSJAN

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

MSC069-180115-
/O.CON.KJAN.TO.W.0015.000000T0000Z-210318T0115Z/
Kemper MS-
802 PM CDT Wed Mar 17 2021

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 815 PM CDT FOR EAST
CENTRAL KEMPER COUNTY...
    
At 802 PM CDT, a severe thunderstorm capable of producing a tornado
was located over Electric Mills, or 17 miles north of Lauderdale,
moving northeast at 55 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 tornadic thunderstorm will remain over mainly rural areas of
east central Kemper County.

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 3267 8845 3281 8848 3291 8835 3272 8837
TIME...MOT...LOC 0102Z 229DEG 46KT 3276 8842 

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

$$

CME

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 17, 7:43 PM CDT	Severe Thunderstorm Warning	JAN	Kemper	30 min
Mar 18, 8:51 AM CDT	River Flood Warning	JAN	Leake	24 hr

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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.