Alert archive / Tennessee / Tornado Warnings in 2017

Tornado Warning 52, NWS Memphis, TN

August 31, 2017Shelby County, Tennessee; Crittenden County, Arkansas; DeSoto County, Mississippi

NWS Memphis, TN issued this tornado warning at Aug 31, 2017, 12:49 PM CDT for Shelby County, Tennessee; Crittenden County, Arkansas; DeSoto 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, 12:49 PM CDT (17:49 UTC)
Expired
Aug 31, 2017, 1:30 PM CDT
In force
41 min
Issued by
NWS Memphis, TN
Area
Storm-based polygon
Tornado
Radar indicated
Hail
0.0 in

Counties Crittenden County, AR, DeSoto County, MS, Shelby County, TN

The radar

The Memphis radar (KNQA), 38 km from the middle of the area, began a volume at 17:51 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, 5.8 hours before the alert went out and 38 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.

874 
WFUS54 KMEG 311749
TORMEG
ARC035-MSC033-TNC157-311830-
/O.NEW.KMEG.TO.W.0052.170831T1749Z-170831T1830Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Memphis TN
1249 PM CDT THU AUG 31 2017

The National Weather Service in Memphis has issued a

* Tornado Warning for...
  Central Crittenden County in eastern Arkansas...
  North central DeSoto County in northwestern Mississippi...
  Southwestern Shelby County in west Tennessee...

* Until 130 PM CDT
    
* At 1249 PM CDT, a severe thunderstorm producing a tornado was
  located over Horn Lake, 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...
  Walls, Whitehaven and Lynchburg around 1255 PM CDT. 
  Southwest Memphis around 105 PM CDT. 
  T O Fuller State Park around 110 PM CDT. 
  Downtown Memphis around 115 PM CDT. 
  West Memphis, Marion, Edmondson and Sunset around 130 PM CDT. 

Other locations impacted by this tornadic thunderstorm include Mound
City, Louise, Gammon, Brice, Cunningham Corner, Amanea, Wyandoke, St
Clair, Harvard and Presidents Island.

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 3531 9015 3497 8993 3489 9005 3511 9040
      3512 9040
TIME...MOT...LOC 1749Z 142DEG 20KT 3496 9003 

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

$$
3 follow-up statements
927 
WWUS54 KMEG 311800
SVSMEG

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

ARC035-MSC033-TNC157-311830-
/O.CON.KMEG.TO.W.0052.000000T0000Z-170831T1830Z/
Crittenden AR-DeSoto MS-Shelby TN-
100 PM CDT THU AUG 31 2017

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 130 PM CDT FOR CENTRAL
CRITTENDEN...NORTH CENTRAL DESOTO AND SOUTHWESTERN SHELBY COUNTIES...
    
At 100 PM CDT, a severe thunderstorm capable of producing a tornado 
was located over Whitehaven, or over Horn Lake, moving northwest at 
15 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...
  Walls around 105 PM CDT. 
  Southwest Memphis around 115 PM CDT. 
  T O Fuller State Park around 125 PM CDT. 

Other locations impacted by this tornadic thunderstorm include Mound
City, Louise, Gammon, Brice, Cunningham Corner, Amanea, Wyandoke, St
Clair, Harvard and Presidents Island.

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 3531 9015 3499 8999 3492 9009 3511 9040
      3512 9040
TIME...MOT...LOC 1800Z 137DEG 13KT 3499 9005 

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

$$
592 
WWUS54 KMEG 311812
SVSMEG

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

MSC033-311821-
/O.CAN.KMEG.TO.W.0052.000000T0000Z-170831T1830Z/
DeSoto MS-
112 PM CDT THU AUG 31 2017

...THE TORNADO WARNING FOR NORTH CENTRAL 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 800 PM CDT for northwestern
Mississippi...and west Tennessee.

LAT...LON 3524 9024 3500 9006 3499 9010 3500 9015
      3511 9040 3512 9040
TIME...MOT...LOC 1811Z 131DEG 20KT 3502 9012 

$$

ARC035-TNC157-311830-
/O.CON.KMEG.TO.W.0052.000000T0000Z-170831T1830Z/
Crittenden AR-Shelby TN-
112 PM CDT THU AUG 31 2017

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 130 PM CDT FOR CENTRAL
CRITTENDEN AND SOUTHWESTERN SHELBY COUNTIES...
    
At 111 PM CDT, a severe thunderstorm capable of producing a tornado 
was located near T O Fuller State Park, 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...
  T O Fuller State Park around 115 PM CDT. 
  West Memphis and Edmondson around 130 PM CDT. 

Other locations impacted by this tornadic thunderstorm include
Riceville, Hulbert, Ebony, Midway Corner, Louise, Julius, Brice,
Cunningham Corner, Amanea and Wyandoke.

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 3524 9024 3500 9006 3499 9010 3500 9015
      3511 9040 3512 9040
TIME...MOT...LOC 1811Z 131DEG 20KT 3502 9012 

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

$$
485 
WWUS54 KMEG 311827
SVSMEG

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

ARC035-TNC157-311837-
/O.EXP.KMEG.TO.W.0052.000000T0000Z-170831T1830Z/
Crittenden AR-Shelby TN-
127 PM CDT THU AUG 31 2017

...THE TORNADO WARNING FOR CENTRAL CRITTENDEN AND SOUTHWESTERN SHELBY
COUNTIES WILL EXPIRE AT 130 PM CDT...
                
The storm which prompted the warning has weakened below severe
limits, and is no longer producing a tornado. Therefore, the warning
will be allowed to expire.

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

LAT...LON 3524 9024 3500 9006 3499 9010 3500 9015
      3511 9040 3512 9040
TIME...MOT...LOC 1827Z 142DEG 20KT 3509 9018 

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 30, 9:13 PM CDTRiver Flood WarningMEGHardeman62 hr
Aug 31, 8:22 AM CDTFlash Flood WarningMEGDyer, Lauderdale3 hr
Aug 31, 12:01 PM CDTTornado WarningMEGFayette44 min
Aug 31, 12:03 PM CDTTornado WarningMEGFayette, Hardeman42 min
Aug 31, 12:43 PM CDTTornado WarningMEGFayette, Hardeman47 min
Aug 31, 1:24 PM CDTFlash Flood WarningMEGShelby3 hr
Aug 31, 1:49 PM CDTTornado WarningMEGFayette, Hardeman41 min
Aug 31, 2:36 PM CDTFlash Flood WarningMEGFayette, Hardeman9 hr
Aug 31, 2:47 PM CDTTornado WarningMEGHardin, McNairy43 min
Aug 31, 3:08 PM CDTFlash Flood WarningMEGShelby9 hr
Aug 31, 3:10 PM CDTTornado Warning Tornado observedMEGHardin, McNairy32 min
Aug 31, 3:23 PM CDTTornado WarningMEGDecatur52 min
Aug 31, 3:26 PM CDTTornado WarningMEGChester, McNairy25 min
Aug 31, 3:29 PM CDTTornado WarningMEGHardeman16 min
Aug 31, 4:43 PM CDTFlash Flood WarningMEGShelby6 hr
Aug 31, 5:21 PM CDTFlash Flood WarningMEGChester, Fayette, Hardeman, Hardin, Haywood, Henderson and 3 more6 hr
Aug 31, 6:08 PM CDTFlash Flood WarningMEGBenton, Carroll, Chester, Decatur, Hardin, Henderson and 1 more6 hr
Aug 31, 6:45 AM CDTFlash Flood WarningMEGCrittenden, Cross, Poinsett16 hr
Aug 31, 8:53 AM CDTFlash Flood WarningMEGCross3 hr
Aug 31, 10:10 AM CDTSpecial Weather StatementMEGLee35 min
Aug 31, 10:53 AM CDTFlash Flood WarningMEGClay3 hr
Aug 31, 11:55 AM CDTFlash Flood WarningMEGCross6 hr
Aug 31, 1:02 PM CDTFlash Flood WarningMEGLee, Phillips6 hr
Aug 31, 1:05 PM CDTTornado WarningMEGLee, St. Francis23 min
Aug 31, 2:47 PM CDTFlash Flood WarningMEGCrittenden, St. Francis3 hr
Aug 31, 3:15 PM CDTFlash Flood WarningMEGCrittenden3 hr
Aug 31, 3:19 PM CDTFlash Flood WarningMEGPhillips3 hr
Aug 31, 5:34 PM CDTFlash Flood WarningMEGCrittenden, Cross, St. Francis6 hr
Aug 31, 5:45 PM CDTFlash Flood WarningMEGCrittenden, Lee, Phillips, St. Francis6 hr
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, 11:36 AM CDTTornado WarningMEGPanola, Quitman, Tate, Tunica39 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, 12:14 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, 12:55 PM CDTTornado WarningMEGBenton, Tippah50 min
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, 1:37 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, 2:51 PM CDTFlash Flood WarningMEGLafayette, Marshall3 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, 4:59 PM CDTSevere Thunderstorm WarningMEGAlcorn, Prentiss, Tippah26 min

Nearby

Tornado Warnings in Tennessee, 2017Tornado Warnings in Arkansas, 2017Tornado 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.