Alert archive / Mississippi / Tornado Warnings in 2017

Tornado Warning 84, NWS Jackson, MS

August 31, 2017Lowndes County, Mississippi

NWS Jackson, MS issued this tornado warning at Aug 31, 2017, 3:49 PM CDT for Lowndes County, Mississippi. It was in force for 41 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, 3:49 PM CDT (20:49 UTC)
Expired: Aug 31, 2017, 4:30 PM CDT
In force: 41 min
Issued by: NWS Jackson, MS
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.0 in

County Lowndes County, MS

The radar

The Columbus AFB radar (KGWX), 35 km from the middle of the area, began a volume at 20:49 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.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Aug 31, 11:13 AM CDT	Tornado Watch	SPC	11 hr

The nearest sounding before it

Birmingham, AL (KBMX), launched 12:00Z, 8.8 hours before the alert went out and 158 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: 724 J/kg
Mixed-layer CIN: -9 J/kg
Mixed-layer LCL: 569 m above ground
0-6 km bulk shear: 33 kt
0-1 km storm-relative helicity: 198 m²/s²
0-3 km storm-relative helicity: 229 m²/s²
Significant tornado parameter: 0.5
Supercell composite: 4.5

Open this sounding in Storm Lab

The text

As transmitted.

382 
WFUS54 KJAN 312049
TORJAN
MSC087-312130-
/O.NEW.KJAN.TO.W.0084.170831T2049Z-170831T2130Z/

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

The National Weather Service in Jackson has issued a

* Tornado Warning for...
  Eastern Lowndes County in northeastern Mississippi...

* Until 430 PM CDT
    
* At 349 PM CDT, a severe thunderstorm capable of producing a tornado
  was located near Columbus, moving north 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...
  Columbus and Steens around 400 PM CDT. 
  Columbus AFB around 405 PM CDT. 
  Caledonia and Kolola Springs around 410 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 3351 8828 3337 8837 3338 8849 3351 8849
      3353 8850 3352 8848 3353 8847 3356 8850
      3360 8847 3362 8849 3366 8849 3368 8843
      3367 8841 3369 8839 3369 8837 3372 8833
      3374 8833 3374 8825
TIME...MOT...LOC 2049Z 197DEG 44KT 3342 8842 

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

$$

DC

4 follow-up statements

429 
WWUS54 KJAN 312101
SVSJAN

Severe Weather Statement
National Weather Service Jackson MS
401 PM CDT THU AUG 31 2017

MSC087-312130-
/O.CON.KJAN.TO.W.0084.000000T0000Z-170831T2130Z/
Lowndes MS-
401 PM CDT THU AUG 31 2017

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 430 PM CDT FOR
NORTHEASTERN LOWNDES COUNTY...
    
At 401 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Columbus, moving north 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...
  Columbus AFB and Steens around 405 PM CDT. 
  Kolola Springs around 410 PM CDT. 
  Caledonia around 415 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 3355 8827 3345 8836 3346 8849 3351 8849
      3353 8847 3363 8844 3367 8843 3367 8841
      3369 8839 3369 8837 3372 8833 3374 8833
      3374 8825
TIME...MOT...LOC 2101Z 199DEG 37KT 3354 8837 

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

$$

DC

133 
WWUS54 KJAN 312109
SVSJAN

Severe Weather Statement
National Weather Service Jackson MS
409 PM CDT THU AUG 31 2017

MSC087-312130-
/O.CON.KJAN.TO.W.0084.000000T0000Z-170831T2130Z/
Lowndes MS-
409 PM CDT THU AUG 31 2017

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 430 PM CDT FOR
NORTHEASTERN LOWNDES COUNTY...
    
At 408 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Steens, or near Columbus AFB, moving north 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...
  Caledonia around 415 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 3357 8832 3357 8840 3363 8841 3367 8841
      3369 8837 3372 8833 3374 8833 3374 8825
      3361 8826
TIME...MOT...LOC 2108Z 198DEG 34KT 3360 8834 

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

$$

DC

868 
WWUS54 KJAN 312117
SVSJAN

Severe Weather Statement
National Weather Service Jackson MS
417 PM CDT THU AUG 31 2017

MSC087-312130-
/O.CON.KJAN.TO.W.0084.000000T0000Z-170831T2130Z/
Lowndes MS-
417 PM CDT THU AUG 31 2017

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 430 PM CDT FOR
NORTHEASTERN LOWNDES COUNTY...
    
At 417 PM CDT, a severe thunderstorm capable of producing a tornado
was located over Caledonia, or 8 miles east of Columbus AFB, moving
north 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 tornadic thunderstorm will remain over mainly rural areas of
northeastern Lowndes 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 3365 8835 3369 8836 3372 8833 3374 8833
      3374 8825 3367 8826 3367 8827 3364 8829
TIME...MOT...LOC 2117Z 200DEG 34KT 3368 8831 

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

$$

DC

265 
WWUS54 KJAN 312127
SVSJAN

Severe Weather Statement
National Weather Service Jackson MS
427 PM CDT THU AUG 31 2017

MSC087-312137-
/O.EXP.KJAN.TO.W.0084.000000T0000Z-170831T2130Z/
Lowndes MS-
427 PM CDT THU AUG 31 2017

...THE TORNADO WARNING FOR NORTHEASTERN LOWNDES COUNTY WILL EXPIRE AT
430 PM CDT...
        
The storm which prompted the warning has moved out of the area.
Therefore the warning will be allowed to expire.

A tornado watch remains in effect until 800 PM CDT for northeastern
Mississippi.

LAT...LON 3365 8835 3369 8836 3372 8833 3374 8833
      3374 8825 3367 8826 3367 8827 3364 8829
TIME...MOT...LOC 2127Z 197DEG 44KT 3366 8832 

$$

DC

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, 10:46 AM CDT	Tornado Warning	JAN	Kemper, Lauderdale	36 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, 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.