Alert archive / Mississippi / Tornado Warnings in 2017

Tornado Warning 82, NWS Jackson, MS

August 31, 2017Kemper County, Lauderdale County, Mississippi

NWS Jackson, MS issued this tornado warning at Aug 31, 2017, 10:46 AM CDT for Kemper County, Lauderdale County, Mississippi. It was in force for 36 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: Aug 31, 2017, 10:46 AM CDT (15:46 UTC)
Expired: Aug 31, 2017, 11:22 AM CDT
In force: 36 min
Issued by: NWS Jackson, MS
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.0 in

Counties Kemper County, MS, Lauderdale County, MS

The radar

The Columbus AFB radar (KGWX), 139 km from the middle of the area, began a volume at 15:44 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 nearest sounding before it

Jackson, MS (KJAN), launched 12:00Z, 3.8 hours before the alert went out and 160 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: 80 J/kg
Mixed-layer CIN: -19 J/kg
Mixed-layer LCL: 821 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: 264 m²/s²
0-3 km storm-relative helicity: 272 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.5

Open this sounding in Storm Lab

The text

As transmitted.

498 
WFUS54 KJAN 311546
TORJAN
MSC069-075-311645-
/O.NEW.KJAN.TO.W.0082.170831T1546Z-170831T1645Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Jackson MS
1046 AM CDT THU AUG 31 2017

The National Weather Service in Jackson has issued a

* Tornado Warning for...
  Southeastern Kemper County in east central Mississippi...
  Northeastern Lauderdale County in east central Mississippi...

* Until 1145 AM CDT
    
* At 1046 AM CDT, a severe thunderstorm capable of producing a
  tornado was located over Tamola, or near Lauderdale, moving
  northeast at 35 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 1055 AM 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 3249 8840 3254 8859 3286 8836 3285 8835
TIME...MOT...LOC 1546Z 208DEG 31KT 3257 8846 

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

$$

JM

2 follow-up statements

933 
WWUS54 KJAN 311602
SVSJAN

Severe Weather Statement
National Weather Service Jackson MS
1102 AM CDT THU AUG 31 2017

MSC075-311611-
/O.CAN.KJAN.TO.W.0082.000000T0000Z-170831T1645Z/
Lauderdale MS-
1102 AM CDT THU AUG 31 2017

...THE TORNADO WARNING FOR NORTHEASTERN LAUDERDALE COUNTY IS
CANCELLED...
    
The tornadic thunderstorm which prompted the warning has moved out 
of the warned area. Therefore, the warning has been cancelled.

LAT...LON 3259 8839 3262 8849 3286 8836 3285 8835
TIME...MOT...LOC 1601Z 208DEG 31KT 3269 8838 

$$

MSC069-311645-
/O.CON.KJAN.TO.W.0082.000000T0000Z-170831T1645Z/
Kemper MS-
1102 AM CDT THU AUG 31 2017

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1145 AM CDT FOR
SOUTHEASTERN KEMPER COUNTY...
    
At 1101 AM CDT, a severe thunderstorm capable of producing a tornado
was located near Emelle, or 13 miles northwest of Livingston, moving
northeast at 35 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
southeastern 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 3259 8839 3262 8849 3286 8836 3285 8835
TIME...MOT...LOC 1601Z 208DEG 31KT 3269 8838 

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

$$

JM

821 
WWUS54 KJAN 311622
SVSJAN

Severe Weather Statement
National Weather Service Jackson MS
1122 AM CDT THU AUG 31 2017

MSC069-311632-
/O.CAN.KJAN.TO.W.0082.000000T0000Z-170831T1645Z/
Kemper MS-
1122 AM CDT THU AUG 31 2017

...THE TORNADO WARNING FOR SOUTHEASTERN KEMPER COUNTY IS CANCELLED...
        
The storm which prompted the warning has moved out of the area.
Therefore the warning has been cancelled.

LAT...LON 3259 8839 3262 8849 3286 8836 3285 8835
TIME...MOT...LOC 1621Z 208DEG 31KT 3285 8828 

$$

JM

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 30, 7:30 PM CDT	Special Weather Statement	JAN	Copiah	30 min
Aug 30, 9:10 PM CDT	Tornado Warning	JAN	Copiah, Lawrence, Simpson	34 min
Aug 30, 9:44 PM CDT	Special Weather Statement	JAN	Simpson	31 min
Aug 31, 10:03 AM CDT	Special Weather Statement	JAN	Kemper	27 min
Aug 31, 10:05 AM CDT	Tornado Warning	JAN	Kemper, Neshoba, Winston	25 min
Aug 31, 10:14 AM CDT	Special Weather Statement	JAN	Webster	31 min
Aug 31, 10:27 AM CDT	Tornado Warning	JAN	Noxubee, Winston	33 min
Aug 31, 10:37 AM CDT	Special Weather Statement	JAN	Kemper	23 min
Aug 31, 10:38 AM CDT	Special Weather Statement	JAN	Lowndes	22 min
Aug 31, 10:51 AM CDT	Tornado Warning	JAN	Noxubee, Oktibbeha, Winston	22 min
Aug 31, 12:37 PM CDT	Special Weather Statement	JAN	Noxubee	23 min
Aug 31, 12:59 PM CDT	Special Weather Statement	JAN	Oktibbeha	31 min
Aug 31, 3:36 PM CDT	Special Weather Statement	JAN	Lowndes	39 min
Aug 31, 3:49 PM CDT	Tornado Warning	JAN	Lowndes	41 min
Aug 31, 5:29 PM CDT	Special Weather Statement	JAN	Bolivar, Sunflower, Washington	61 min

Nearby

Tornado Warnings in Mississippi, 2017 Every tornado warning in 2017 Tornadoes in 2017

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.