Alert archive / Mississippi / Tornado Warnings in 2017

Tornado Warning 41, NWS Memphis, TN

August 31, 20174 counties in Mississippi

NWS Memphis, TN issued this tornado warning at Aug 31, 2017, 11:36 AM CDT for 4 counties in Mississippi. It was in force for 39 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, 11:36 AM CDT (16:36 UTC)
Expired
Aug 31, 2017, 12:15 PM CDT
In force
39 min
Issued by
NWS Memphis, TN
Area
Storm-based polygon
Tornado
Radar indicated
Hail
0.0 in

Counties Panola County, MS, Quitman County, MS, Tate County, MS, Tunica County, MS

The radar

The Memphis radar (KNQA), 97 km from the middle of the area, began a volume at 16:39 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.

IssuedProductOfficeLasted
Aug 31, 11:13 AM CDTTornado WatchSPC11 hr

The nearest sounding before it

Little Rock, AR (KBYH), launched 12:00Z, 4.6 hours before the alert went out and 42 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-pSkew-T log-p diagram, Little Rock, AR at 12:00Z on 2017-08-31Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 20 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Little Rock, AR at 12:00Z on 2017-08-31The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -15 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
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
20 J/kg
Mixed-layer CIN
-77 J/kg
Mixed-layer LCL
525 m above ground
0-6 km bulk shear
2 kt
0-1 km storm-relative helicity
-15 m²/s²
0-3 km storm-relative helicity
26 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

899 
WFUS54 KMEG 311636
TORMEG
MSC107-119-137-143-311715-
/O.NEW.KMEG.TO.W.0041.170831T1636Z-170831T1715Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Memphis TN
1136 AM CDT THU AUG 31 2017

The National Weather Service in Memphis has issued a

* Tornado Warning for...
  Southeastern Tunica County in northwestern Mississippi...
  Southwestern Tate County in northwestern Mississippi...
  Northeastern Quitman County in northwestern Mississippi...
  Northwestern Panola County in northwestern Mississippi...

* Until 1215 PM CDT
    
* At 1136 AM CDT, a severe thunderstorm producing a tornado was
  located over Pleasant Grove, or 12 miles northwest of Batesville,
  moving northwest at 25 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...
  Sledge around 1145 AM CDT. 
  Crenshaw around 1155 AM CDT. 
  Strayhorn around 1210 PM CDT. 
  Little Texas around 1215 PM CDT. 

Other locations impacted by this tornadic thunderstorm include
Prichard, Askew, Sarah, Dooley, Buxton, Savage, Fox Island, Horatio,
Longtown and Evansville.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a storm shelter 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 3439 9021 3467 9046 3476 9022 3440 9000
TIME...MOT...LOC 1636Z 152DEG 21KT 3444 9010 

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

$$
2 follow-up statements
446 
WWUS54 KMEG 311654
SVSMEG

Severe Weather Statement
National Weather Service Memphis TN
1154 AM CDT THU AUG 31 2017

MSC107-119-311703-
/O.CAN.KMEG.TO.W.0041.000000T0000Z-170831T1715Z/
Quitman MS-Panola MS-
1154 AM CDT THU AUG 31 2017

...THE TORNADO WARNING FOR NORTHEASTERN QUITMAN AND NORTHWESTERN
PANOLA 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 800 PM CDT for northwestern
Mississippi.

LAT...LON 3467 9046 3476 9022 3456 9014 3455 9016
      3455 9020 3454 9020 3451 9028 3451 9031
TIME...MOT...LOC 1653Z 142DEG 30KT 3456 9021 

$$

MSC137-143-311715-
/O.CON.KMEG.TO.W.0041.000000T0000Z-170831T1715Z/
Tunica MS-Tate MS-
1154 AM CDT THU AUG 31 2017

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1215 PM CDT FOR
SOUTHEASTERN TUNICA AND SOUTHWESTERN TATE COUNTIES...
    
At 1153 AM CDT, a severe thunderstorm producing a tornado was located
near Crenshaw, or 14 miles west of Senatobia, moving northwest 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...
  Little Texas around 1205 PM CDT. 
  Tunica and North Tunica around 1215 PM CDT. 

Other locations impacted by this tornadic thunderstorm include Fox
Island, Prichard, Dooley, Evansville and Savage.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a storm shelter 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 3467 9046 3476 9022 3456 9014 3455 9016
      3455 9020 3454 9020 3451 9028 3451 9031
TIME...MOT...LOC 1653Z 142DEG 30KT 3456 9021 

TORNADO...RADAR INDICATED
HAIL...<.75IN

$$
884 
WWUS54 KMEG 311716
SVSMEG

Severe Weather Statement
National Weather Service Memphis TN
1216 PM CDT THU AUG 31 2017

MSC137-143-311726-
/O.EXP.KMEG.TO.W.0041.000000T0000Z-170831T1715Z/
Tunica MS-Tate MS-
1216 PM CDT THU AUG 31 2017

...THE TORNADO WARNING FOR SOUTHEASTERN TUNICA AND SOUTHWESTERN TATE
COUNTIES HAS EXPIRED...
                
The storm which prompted the warning has weakened below severe
limits, and is no longer producing a tornado. Therefore, the warning
has been allowed to expire.

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

LAT...LON 3467 9046 3476 9022 3456 9014 3455 9016
      3455 9020 3454 9020 3451 9028 3451 9031
TIME...MOT...LOC 1716Z 152DEG 21KT 3467 9028 

$$

The office that day

Everything else NWS Memphis, TN issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 31, 9:45 AM CDTSpecial Weather StatementMEGTate30 min
Aug 31, 9:53 AM CDTTornado WarningMEGTate18 min
Aug 31, 10:17 AM CDTSpecial Weather StatementMEGTunica43 min
Aug 31, 10:31 AM CDTSpecial Weather StatementMEGYalobusha44 min
Aug 31, 10:37 AM CDTSevere Thunderstorm WarningMEGPanola, Yalobusha23 min
Aug 31, 10:51 AM CDTTornado WarningMEGChickasaw, Lee, Pontotoc39 min
Aug 31, 10:55 AM CDTSevere Thunderstorm WarningMEGPanola, Yalobusha50 min
Aug 31, 11:09 AM CDTSevere Thunderstorm WarningMEGLafayette, Marshall38 min
Aug 31, 11:21 AM CDTTornado WarningMEGBenton, Tippah, Union39 min
Aug 31, 11:22 AM CDTTornado WarningMEGBenton53 min
Aug 31, 11:24 AM CDTTornado WarningMEGPanola51 min
Aug 31, 11:29 AM CDTTornado WarningMEGLee, Pontotoc, Union31 min
Aug 31, 11:40 AM CDTTornado WarningMEGCalhoun, Chickasaw35 min
Aug 31, 11:57 AM CDTTornado WarningMEGTate48 min
Aug 31, 11:58 AM CDTTornado WarningMEGBenton, Pontotoc, Tippah, Union32 min
Aug 31, 12:01 PM CDTTornado WarningMEGBenton, Marshall44 min
Aug 31, 12:03 PM CDTTornado WarningMEGBenton, Tippah42 min
Aug 31, 12:14 PM CDTTornado WarningMEGCalhoun, Chickasaw, Lafayette, Pontotoc31 min
Aug 31, 12:31 PM CDTTornado WarningMEGBenton, Tippah, Union29 min
Aug 31, 12:33 PM CDTTornado WarningMEGPanola, Tate, Tunica42 min
Aug 31, 12:44 PM CDTTornado WarningMEGLafayette, Pontotoc, Union31 min
Aug 31, 12:49 PM CDTTornado WarningMEGDeSoto41 min
Aug 31, 12:55 PM CDTTornado WarningMEGBenton, Tippah50 min
Aug 31, 1:02 PM CDTFlash Flood WarningMEGPanola, Quitman, Tate, Tunica6 hr
Aug 31, 1:07 PM CDTTornado WarningMEGItawamba, Lee38 min
Aug 31, 1:07 PM CDTTornado WarningMEGLee, Pontotoc, Union38 min
Aug 31, 1:23 PM CDTTornado WarningMEGPrentiss52 min
Aug 31, 1:24 PM CDTFlash Flood WarningMEGDeSoto3 hr
Aug 31, 1:37 PM CDTTornado WarningMEGLee, Prentiss, Tippah, Union38 min
Aug 31, 1:57 PM CDTTornado WarningMEGAlcorn18 min
Aug 31, 2:02 PM CDTTornado WarningMEGTippah43 min
Aug 31, 2:12 PM CDTTornado WarningMEGChickasaw, Pontotoc28 min
Aug 31, 2:26 PM CDTTornado WarningMEGTishomingo34 min
Aug 31, 2:36 PM CDTFlash Flood WarningMEGBenton, Marshall, Tippah9 hr
Aug 31, 2:51 PM CDTFlash Flood WarningMEGLafayette, Marshall3 hr
Aug 31, 3:15 PM CDTFlash Flood WarningMEGDeSoto, Lafayette, Marshall, Panola, Tate3 hr
Aug 31, 3:31 PM CDTFlash Flood WarningMEGBenton, DeSoto, Marshall9 hr
Aug 31, 4:32 PM CDTSevere Thunderstorm WarningMEGAlcorn, Prentiss, Tippah28 min
Aug 31, 4:43 PM CDTFlash Flood WarningMEGDeSoto6 hr
Aug 31, 4:59 PM CDTSevere Thunderstorm WarningMEGAlcorn, Prentiss, Tippah26 min
Aug 31, 5:45 PM CDTFlash Flood WarningMEGCoahoma, DeSoto, Lafayette, Marshall, Panola, Quitman and 2 more6 hr

Nearby

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