Alert archive / Mississippi / Tornado Warnings in 2016

Tornado Warning 25, NWS Memphis, TN

December 17, 2016DeSoto County, Marshall County, Mississippi

NWS Memphis, TN issued this tornado warning at Dec 17, 2016, 9:15 PM CST for DeSoto County, Marshall County, Mississippi. It was in force for 30 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
Dec 17, 2016, 9:15 PM CST (03:15 UTC)
Expired
Dec 17, 2016, 9:45 PM CST
In force
30 min
Issued by
NWS Memphis, TN
Area
Storm-based polygon
Tornado
Radar indicated
Hail
0.75 in

Counties DeSoto County, MS, Marshall County, MS

The radar

The Memphis radar (KNQA), 58 km from the middle of the area, began a volume at 03:15 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

TimeReportWhereRemark
Dec 17, 9:15 PM CSTTORNADO3 Se Hernando, MSSIGNIFICANT TREE DAMAGE AND A BACKYARD SHED DESTROYED.

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.

IssuedProductOfficeLasted
Dec 17, 8:58 PM CSTTornado WatchSPC6 hr

The nearest sounding before it

Little Rock, AR (KBYH), launched 00:00Z, 3.3 hours before the alert went out and 10 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 00:00Z on 2016-12-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 43 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 00:00Z on 2016-12-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 395 square meters per square second.1939587897117Sfc1 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
43 J/kg
Mixed-layer CIN
-194 J/kg
Mixed-layer LCL
608 m above ground
0-6 km bulk shear
83 kt
0-1 km storm-relative helicity
395 m²/s²
0-3 km storm-relative helicity
525 m²/s²
Significant tornado parameter
0.0
Supercell composite
3.0

Open this sounding in Storm Lab

The text

As transmitted.

035 
WFUS54 KMEG 180315
TORMEG
MSC033-093-180345-
/O.NEW.KMEG.TO.W.0025.161218T0315Z-161218T0345Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Memphis TN
915 PM CST SAT DEC 17 2016

The National Weather Service in Memphis has issued a

* Tornado Warning for...
  Northwestern Marshall County in northwestern Mississippi...
  Eastern DeSoto County in northwestern Mississippi...

* Until 945 PM CST
    
* At 915 PM CST, a severe thunderstorm producing a tornado was
  located near Hernando, 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...
  Lewisburg around 925 PM CST. 
  Byhalia around 935 PM CST. 
  Olive Branch around 940 PM CST. 

Other locations impacted by this tornadic thunderstorm include Cayce,
Fairhaven, Victoria, Handy Corner, Coal Oil Corner, Cockrum,
Cedarview, Bright, Miller and Love.

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 3474 8999 3487 8999 3499 8976 3499 8957
      3483 8956 3477 8984 3477 8992 3476 8991
      3475 8992
TIME...MOT...LOC 0315Z 231DEG 35KT 3481 8993 

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

$$
2 follow-up statements
047 
WWUS54 KMEG 180331
SVSMEG

Severe Weather Statement
National Weather Service Memphis TN
931 PM CST SAT DEC 17 2016

MSC033-180341-
/O.CAN.KMEG.TO.W.0025.000000T0000Z-161218T0345Z/
DeSoto MS-
931 PM CST SAT DEC 17 2016

...THE TORNADO WARNING FOR EASTERN DESOTO COUNTY 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 300 AM CST for northwestern
Mississippi.

LAT...LON 3499 8972 3499 8957 3483 8956 3480 8972
TIME...MOT...LOC 0331Z 231DEG 35KT 3491 8978 

$$

MSC093-180345-
/O.CON.KMEG.TO.W.0025.000000T0000Z-161218T0345Z/
Marshall MS-
931 PM CST SAT DEC 17 2016

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 945 PM CST FOR
NORTHWESTERN MARSHALL COUNTY...
    
At 931 PM CST, a severe thunderstorm producing a tornado was located
near Lewisburg, or near Olive Branch, 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...
  Byhalia around 935 PM CST. 

Other locations impacted by this tornadic thunderstorm include Cayce,
Victoria, Coal Oil Corner and Taska.

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 3499 8972 3499 8957 3483 8956 3480 8972
TIME...MOT...LOC 0331Z 231DEG 35KT 3491 8978 

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

$$
725 
WWUS54 KMEG 180340
SVSMEG

Severe Weather Statement
National Weather Service Memphis TN
940 PM CST SAT DEC 17 2016

MSC093-180350-
/O.EXP.KMEG.TO.W.0025.000000T0000Z-161218T0345Z/
Marshall MS-
940 PM CST SAT DEC 17 2016

...THE TORNADO WARNING FOR NORTHWESTERN MARSHALL COUNTY WILL EXPIRE
AT 945 PM CST...
        
The storm which prompted the warning has weakened below severe
limits, and has exited the warned area. Therefore, the warning will
be allowed to expire.

A tornado watch remains in effect until 300 AM CST for northwestern
Mississippi.

LAT...LON 3499 8972 3499 8957 3483 8956 3480 8972
TIME...MOT...LOC 0340Z 231DEG 35KT 3496 8971 

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Dec 17, 8:41 PM CSTSpecial Weather StatementMEGDeSoto, Tate, Tunica49 min
Dec 17, 8:54 PM CSTSevere Thunderstorm WarningMEGDeSoto, Marshall51 min
Dec 17, 8:58 PM CSTSevere Thunderstorm WarningMEGDeSoto, Panola, Tate, Tunica32 min
Dec 17, 9:07 PM CSTTornado WarningMEGDeSoto, Marshall, Tate23 min
Dec 17, 9:30 PM CSTSevere Thunderstorm WarningMEGLafayette, Marshall, Panola, Tate45 min
Dec 17, 9:38 PM CSTSevere Thunderstorm WarningMEGBenton, Marshall, Tippah52 min
Dec 17, 9:43 PM CSTTornado WarningMEGBenton, Marshall, Tippah32 min
Dec 17, 9:57 PM CSTTornado WarningMEGBenton, Lafayette, Marshall, Panola, Tate33 min
Dec 17, 10:14 PM CSTTornado WarningMEGLafayette, Marshall31 min
Dec 17, 10:33 PM CSTSevere Thunderstorm WarningMEGAlcorn, Tishomingo42 min
Dec 17, 10:36 PM CSTSevere Thunderstorm WarningMEGAlcorn, Benton, Prentiss, Tippah, Union24 min
Dec 17, 10:51 PM CSTTornado WarningMEGPrentiss, Tippah, Union24 min
Dec 17, 10:55 PM CSTSevere Thunderstorm WarningMEGAlcorn, Prentiss, Tishomingo50 min
Dec 17, 10:56 PM CSTTornado Warning Tornado observedMEGAlcorn, Tishomingo34 min
Dec 17, 11:05 PM CSTSevere Thunderstorm WarningMEGLee, Pontotoc, Prentiss, Union40 min
Dec 17, 11:07 PM CSTTornado WarningMEGAlcorn, Prentiss, Tishomingo38 min
Dec 17, 11:25 PM CSTSevere Thunderstorm WarningMEGCalhoun, Chickasaw, Lafayette, Lee, Pontotoc, Yalobusha65 min
Dec 17, 11:38 PM CSTSevere Thunderstorm WarningMEGItawamba, Lee, Pontotoc, Prentiss, Tishomingo, Union67 min
Dec 18, 12:03 AM CSTSevere Thunderstorm WarningMEGItawamba, Lee, Tishomingo42 min
Dec 18, 12:27 AM CSTSevere Thunderstorm WarningMEGChickasaw, Itawamba, Lee, Monroe63 min
Dec 18, 12:41 AM CSTSevere Thunderstorm WarningMEGItawamba, Lee49 min
Dec 18, 12:42 AM CSTSevere Thunderstorm WarningMEGItawamba, Lee48 min
Dec 18, 1:25 AM CSTSevere Thunderstorm WarningMEGItawamba, Monroe39 min

Nearby

Tornado Warnings in Mississippi, 2016Every tornado warning in 2016Tornadoes in 2016

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.