Alert archive / Tennessee / Tornado Warnings in 2016

Tornado Warning 9, NWS Huntsville, AL

March 31, 2016Franklin County, Tennessee

NWS Huntsville, AL issued this tornado warning at Mar 31, 2016, 10:00 PM CDT for Franklin County, Tennessee. It was in force for 30 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: Mar 31, 2016, 10:00 PM CDT (03:00 UTC)
Expired: Mar 31, 2016, 10:30 PM CDT
In force: 30 min
Issued by: NWS Huntsville, AL
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.0 in

County Franklin County, TN

The radar

The Northeast Alabama radar (KHTX), 29 km from the middle of the area, began a volume at 03:00 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.

Issued	Product	Office	Lasted
Mar 31, 5:58 PM CDT	Tornado Watch	SPC	7 hr

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 00:00Z, 3.0 hours before the alert went out and 123 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 217 J/kg
Mixed-layer CIN: -157 J/kg
Mixed-layer LCL: 861 m above ground
0-6 km bulk shear: 56 kt
0-1 km storm-relative helicity: 488 m²/s²
0-3 km storm-relative helicity: 602 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 1.5

Open this sounding in Storm Lab

The text

As transmitted.

998 
WFUS54 KHUN 010300
TORHUN
TNC051-010330-
/O.NEW.KHUN.TO.W.0009.160401T0300Z-160401T0330Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE HUNTSVILLE AL
1000 PM CDT THU MAR 31 2016

THE NATIONAL WEATHER SERVICE IN HUNTSVILLE HAS ISSUED A

* TORNADO WARNING FOR...
  EAST CENTRAL FRANKLIN COUNTY IN MIDDLE TENNESSEE...

* UNTIL 1030 PM CDT
    
* AT 959 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO
  WAS LOCATED 3 MILES SOUTHEAST OF BELVIDERE...MOVING EAST AT 30 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. 

* LOCATIONS IMPACTED INCLUDE...
  COWAN...MONTEAGLE...SEWANEE AND ST. ANDREWS. 

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 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 3528 8591 3522 8586 3512 8587 3511 8586
      3509 8586 3508 8614 3511 8616
TIME...MOT...LOC 0259Z 252DEG 28KT 3511 8611 

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

$$

BCC

2 follow-up statements

554 
WWUS54 KHUN 010307
SVSHUN

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE HUNTSVILLE AL
1007 PM CDT THU MAR 31 2016

TNC051-010330-
/O.CON.KHUN.TO.W.0009.000000T0000Z-160401T0330Z/
FRANKLIN TN-
1007 PM CDT THU MAR 31 2016

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1030 PM CDT FOR EAST
CENTRAL FRANKLIN COUNTY...
    
AT 1007 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A
TORNADO WAS LOCATED 3 MILES SOUTHWEST OF COWAN...OR NEAR
WINCHESTER...MOVING EAST AT 30 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. 

LOCATIONS IMPACTED INCLUDE...
COWAN...MONTEAGLE...SEWANEE AND ST. ANDREWS. 

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 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 3528 8591 3522 8586 3512 8587 3511 8586
      3509 8586 3509 8607 3513 8609
TIME...MOT...LOC 0307Z 252DEG 28KT 3513 8603 

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

$$

BCC

989 
WWUS54 KHUN 010320
SVSHUN

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE HUNTSVILLE AL
1020 PM CDT THU MAR 31 2016

TNC051-010330-
/O.EXP.KHUN.TO.W.0009.000000T0000Z-160401T0330Z/
FRANKLIN TN-
1020 PM CDT THU MAR 31 2016

...THE TORNADO WARNING FOR EAST CENTRAL FRANKLIN COUNTY WILL EXPIRE
AT 1030 PM CDT...
                
THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER APPEARS CAPABLE OF PRODUCING A TORNADO.
THEREFORE THE WARNING WILL BE ALLOWED TO EXPIRE.  HOWEVER GUSTY WINDS
AND HEAVY RAIN ARE STILL POSSIBLE WITH THIS THUNDERSTORM.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 100 AM CDT FOR NORTHEASTERN
ALABAMA...AND CENTRAL TENNESSEE.

LAT...LON 3528 8591 3522 8586 3512 8587 3511 8586
      3509 8586 3509 8607 3513 8609
TIME...MOT...LOC 0318Z 252DEG 28KT 3513 8603 

$$

BCC

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 31, 7:17 PM CDT	Tornado Warning Tornado observed	HUN	Lincoln	28 min
Mar 31, 7:30 PM CDT	Tornado Warning	HUN	Lincoln	30 min
Mar 31, 7:43 PM CDT	Severe Thunderstorm Warning	HUN	Franklin, Lincoln, Moore	32 min
Mar 31, 8:06 PM CDT	Severe Thunderstorm Warning	HUN	Franklin	24 min
Mar 31, 8:31 PM CDT	Special Weather Statement	HUN	Franklin, Lincoln	59 min
Mar 31, 8:55 PM CDT	Flash Flood Warning	HUN	Franklin, Lincoln, Moore	3 hr
Mar 31, 9:13 PM CDT	Special Weather Statement	HUN	Franklin, Lincoln	47 min
Mar 31, 9:18 PM CDT	Severe Thunderstorm Warning	HUN	Lincoln, Moore	27 min
Mar 31, 9:39 PM CDT	Severe Thunderstorm Warning	HUN	Franklin, Lincoln	36 min
Mar 31, 11:57 PM CDT	Areal Flood Warning	HUN	Franklin, Lincoln, Moore	3 hr
Apr 1, 8:29 AM CDT	River Flood Warning	HUN	Franklin, Lincoln	11 hr
Apr 1, 9:21 AM CDT	Areal Flood Warning	HUN	Franklin	10 hr

Nearby

Tornado Warnings in Tennessee, 2016 Every tornado warning in 2016 Tornadoes 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.