Alert archive / Tennessee / Tornado Warnings in 2014

Tornado Warning 2, NWS Huntsville, AL

February 20, 2014Lincoln County, Tennessee; Madison County, Alabama

NWS Huntsville, AL issued this tornado warning at Feb 20, 2014, 9:41 PM CST for Lincoln County, Tennessee; Madison County, Alabama. It was in force for 49 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 20, 2014, 9:41 PM CST (03:41 UTC)
Expired
Feb 20, 2014, 10:30 PM CST
In force
49 min
Issued by
NWS Huntsville, AL
Area
Storm-based polygon

Counties Madison County, AL, Lincoln County, TN

The radar

The Northeast Alabama radar (KHTX), 40 km from the middle of the area, began a volume at 03:42 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 20, 6:49 PM CSTTornado WatchSPC6 hr

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 00:00Z, 3.7 hours before the alert went out and 132 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, Nashville Metro, TN at 00:00Z on 2014-02-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 231 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, Nashville Metro, TN at 00:00Z on 2014-02-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 346 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
231 J/kg
Mixed-layer CIN
-78 J/kg
Mixed-layer LCL
1039 m above ground
0-6 km bulk shear
61 kt
0-1 km storm-relative helicity
346 m²/s²
0-3 km storm-relative helicity
386 m²/s²
Significant tornado parameter
0.4
Supercell composite
1.3

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

894 
WFUS54 KHUN 210341
TORHUN
ALC089-TNC103-210430-
/O.NEW.KHUN.TO.W.0002.140221T0341Z-140221T0430Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE HUNTSVILLE AL
941 PM CST THU FEB 20 2014

THE NATIONAL WEATHER SERVICE IN HUNTSVILLE HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHWESTERN MADISON COUNTY IN NORTH CENTRAL ALABAMA...
  SOUTHEASTERN LINCOLN COUNTY IN MIDDLE TENNESSEE...

* UNTIL 1030 PM CST
    
* AT 940 PM CST...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM
  CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS STORM WAS LOCATED
  NEAR HAZEL GREEN...AND MOVING NORTHEAST AT 50 MPH.

* LOCATIONS IMPACTED INCLUDE...
  MERIDIANVILLE AND HAZEL GREEN. 

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 IN A MOBILE HOME OR
OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.

&&

LAT...LON 3484 8665 3496 8673 3511 8633 3499 8632
      3491 8647
TIME...MOT...LOC 0337Z 237DEG 49KT 3495 8657 

$$

TT
2 follow-up statements
245 
WWUS54 KHUN 210348
SVSHUN

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE HUNTSVILLE AL
948 PM CST THU FEB 20 2014

ALC089-TNC103-210430-
/O.CON.KHUN.TO.W.0002.000000T0000Z-140221T0430Z/
MADISON AL-LINCOLN TN-
948 PM CST THU FEB 20 2014

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1030 PM CST FOR NORTH
CENTRAL MADISON AND SOUTHEASTERN LINCOLN COUNTIES...
    
AT 948 PM CST...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 
CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS STORM WAS LOCATED 3 
MILES NORTHEAST OF HAZEL GREEN...MOVING NORTHEAST AT 55 MPH.

THIS TORNADIC THUNDERSTORM WILL REMAIN WILL MOVE NORTHEAST FROM 
NORTHERN MADISON COUNTY INTO SOUTHEAST LINCOLN COUNTY BY AROUND 10 
PM AND WILL BE ABOUT 5 MILES SOUTH OF FLINTVILLE TENNESSEE THROUGH 
1030 PM.  

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TORNADOES ARE EXTREMELY DIFFICULT TO SEE AND CONFIRM AT NIGHT. DO NOT
WAIT TO SEE OR HEAR THE TORNADO. TAKE COVER NOW!

&&

LAT...LON 3491 8655 3501 8657 3511 8633 3499 8632
      3491 8647
TIME...MOT...LOC 0342Z 237DEG 49KT 3502 8644 

$$

TT
418 
WWUS54 KHUN 210403
SVSHUN

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE HUNTSVILLE AL
1003 PM CST THU FEB 20 2014

ALC089-TNC103-210412-
/O.CAN.KHUN.TO.W.0002.000000T0000Z-140221T0430Z/
MADISON AL-LINCOLN TN-
1003 PM CST THU FEB 20 2014

...THE TORNADO WARNING FOR NORTH CENTRAL MADISON AND SOUTHEASTERN
LINCOLN COUNTIES IS CANCELLED...
                
THE STORM WHICH PROMPTED THE TORNADO WARNING HAS WEAKENED BELOW 
SEVERE LIMITS...AND NO LONGER APPEARS CAPABLE OF PRODUCING A 
TORNADO. THEREFORE THE WARNING HAS BEEN CANCELLED.

LAT...LON 3491 8655 3501 8657 3511 8633 3499 8632
      3491 8647
TIME...MOT...LOC 0402Z 237DEG 49KT 3517 8615 

$$

TT

The office that day

Everything else NWS Huntsville, AL issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Feb 20, 9:14 PM CSTSevere Thunderstorm WarningHUNLincoln31 min
Feb 20, 9:34 PM CSTSevere Thunderstorm WarningHUNLincoln, Moore26 min
Feb 20, 9:43 PM CSTSevere Thunderstorm WarningHUNLincoln32 min
Feb 20, 9:59 PM CSTSevere Thunderstorm WarningHUNFranklin, Lincoln, Moore46 min
Feb 20, 10:11 PM CSTTornado WarningHUNFranklin49 min
Feb 20, 7:00 PM CSTSpecial Weather StatementHUNColbert45 min
Feb 20, 7:26 PM CSTSevere Thunderstorm WarningHUNLauderdale34 min
Feb 20, 7:44 PM CSTSevere Thunderstorm WarningHUNColbert, Franklin31 min
Feb 20, 8:06 PM CSTSevere Thunderstorm WarningHUNColbert, Lauderdale39 min
Feb 20, 8:14 PM CSTSevere Thunderstorm WarningHUNColbert, Franklin46 min
Feb 20, 8:42 PM CSTSevere Thunderstorm WarningHUNColbert, Lauderdale, Lawrence, Limestone48 min
Feb 20, 8:46 PM CSTSevere Thunderstorm WarningHUNFranklin, Lawrence29 min
Feb 20, 9:11 PM CSTTornado WarningHUNLimestone34 min
Feb 20, 9:21 PM CSTSevere Thunderstorm WarningHUNCullman, Lawrence, Morgan39 min
Feb 20, 9:52 PM CSTFlash Flood WarningHUNFranklin, Lawrence, Morgan3 hr
Feb 20, 10:01 PM CSTSevere Thunderstorm WarningHUNCullman, Morgan44 min
Feb 20, 10:06 PM CSTFlash Flood WarningHUNLimestone, Madison, Morgan3 hr
Feb 20, 10:47 PM CSTSpecial Weather StatementHUNCullman43 min
Feb 20, 10:51 PM CSTSevere Thunderstorm WarningHUNCullman39 min
Feb 20, 11:14 PM CSTSevere Thunderstorm WarningHUNJackson46 min
Feb 20, 11:43 PM CSTSevere Thunderstorm WarningHUNDeKalb, Jackson32 min
Feb 21, 12:03 AM CSTSevere Thunderstorm WarningHUNDeKalb42 min
Feb 21, 12:32 AM CSTTornado WarningHUNDeKalb43 min
Feb 21, 12:35 AM CSTAreal Flood WarningHUNFranklin, Lawrence, Limestone, Madison, Morgan4 hr
Feb 21, 4:30 AM CSTAreal Flood WarningHUNMadison6 hr
Feb 21, 10:40 AM CSTRiver Flood WarningHUNJackson, Madison, Marshall43 hr
Feb 21, 10:48 AM CSTRiver Flood WarningHUNMadison9 hr

Nearby

Tornado Warnings in Tennessee, 2014Tornado Warnings in Alabama, 2014Every tornado warning in 2014Tornadoes in 2014

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.