Alert archive / Mississippi / Tornado Warnings in 2018

Tornado Warning 15, NWS Memphis, TN

February 24, 2018Lee County, Prentiss County, Union County, Mississippi

NWS Memphis, TN issued this tornado warning at Feb 24, 2018, 10:04 PM CST for Lee County, Prentiss County, Union 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
Feb 24, 2018, 10:04 PM CST (04:04 UTC)
Expired
Feb 24, 2018, 10:45 PM CST
In force
41 min
Issued by
NWS Memphis, TN
Area
Storm-based polygon
Tornado
Radar indicated
Hail
0.75 in

Counties Lee County, MS, Prentiss County, MS, Union County, MS

The radar

The Columbus AFB radar (KGWX), 84 km from the middle of the area, began a volume at 04:07 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
Feb 24, 3:16 PM CSTTornado WatchSPC8 hr

The nearest sounding before it

Birmingham, AL (KBMX), launched 00:00Z, 4.1 hours before the alert went out and 236 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, Birmingham, AL at 00:00Z on 2018-02-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 9 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, Birmingham, AL at 00:00Z on 2018-02-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 144 square meters per square second.1939587897Sfc1 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
9 J/kg
Mixed-layer CIN
-19 J/kg
Mixed-layer LCL
1439 m above ground
0-6 km bulk shear
47 kt
0-1 km storm-relative helicity
144 m²/s²
0-3 km storm-relative helicity
194 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

Open this sounding in Storm Lab

The text

As transmitted.

291 
WFUS54 KMEG 250404
TORMEG
MSC081-117-145-250445-
/O.NEW.KMEG.TO.W.0015.180225T0404Z-180225T0445Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Memphis TN
1004 PM CST SAT FEB 24 2018

The National Weather Service in Memphis has issued a

* Tornado Warning for...
  Northeastern Union County in northeastern Mississippi...
  Northeastern Lee County in northeastern Mississippi...
  Western Prentiss County in northeastern Mississippi...

* Until 1045 PM CST
    
* At 1004 PM CST, a severe thunderstorm producing a tornado was
  located near Keownville, or near New Albany, moving northeast at 45
  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...
  Baldwyn around 1025 PM CST. 
  Jumpertown and Wheeler around 1030 PM CST. 
  Booneville around 1040 PM CST. 
  Thrashers around 1045 PM CST. 

Other locations impacted by this tornadic thunderstorm include Union
Hill, Graham, Jericho, Alpine, Blackland, Gaston, Marietta, Baker,
Geeville and Locum.

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 3448 8845 3447 8897 3451 8899 3460 8883
      3460 8872 3466 8872 3476 8855 3476 8849
TIME...MOT...LOC 0404Z 243DEG 38KT 3450 8893 

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

$$
1 follow-up statement
050 
WWUS54 KMEG 250447
SVSMEG

Severe Weather Statement
National Weather Service Memphis TN
1047 PM CST SAT FEB 24 2018

MSC081-117-145-250456-
/O.EXP.KMEG.TO.W.0015.000000T0000Z-180225T0445Z/
Union MS-Lee MS-Prentiss MS-
1047 PM CST SAT FEB 24 2018

...THE TORNADO WARNING FOR NORTHEASTERN UNION...NORTHEASTERN LEE AND
WESTERN PRENTISS COUNTIES HAS EXPIRED...
        
The storm which prompted the warning has weakened below severe
limits, and has exited the warned area. Therefore, the warning has
been allowed to expire.

A tornado watch remains in effect until 1100 PM CST for northeastern
Mississippi.

LAT...LON 3448 8845 3447 8897 3451 8899 3460 8883
      3460 8872 3466 8872 3476 8855 3476 8849
TIME...MOT...LOC 0446Z 243DEG 38KT 3470 8845 

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Feb 24, 6:13 PM CSTFlash Flood WarningMEGDeSoto6 hr
Feb 24, 6:49 PM CSTFlash Flood WarningMEGCoahoma, Quitman, Tate, Tunica6 hr
Feb 24, 7:30 PM CSTSpecial Weather StatementMEGDeSoto45 min
Feb 24, 7:44 PM CSTSpecial Weather StatementMEGPanola, Quitman, Tate46 min
Feb 24, 9:12 PM CSTFlash Flood WarningMEGBenton, Marshall, Tate, Tippah3 hr
Feb 24, 9:32 PM CSTFlash Flood WarningMEGLafayette, Panola, Tallahatchie, Yalobusha4 hr
Feb 24, 9:36 PM CSTTornado WarningMEGAlcorn, Tippah39 min
Feb 24, 10:00 PM CSTTornado WarningMEGAlcorn, Prentiss, Tishomingo45 min
Feb 24, 10:05 PM CSTTornado WarningMEGLee, Prentiss, Tippah, Union40 min
Feb 24, 10:24 PM CSTFlash Flood WarningMEGAlcorn, Calhoun, Lee, Pontotoc, Prentiss, Tishomingo and 1 more3 hr
Feb 24, 10:31 PM CSTTornado WarningMEGAlcorn, Prentiss, Tishomingo15 min
Feb 24, 11:01 PM CSTSevere Thunderstorm WarningMEGItawamba, Lee, Prentiss, Tishomingo11 min

Nearby

Tornado Warnings in Mississippi, 2018Every tornado warning in 2018Tornadoes in 2018

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.