Alert archive / Tennessee / Tornado Warnings in 2011

Tornado Warning 113, NWS Huntsville, AL

April 27, 2011Franklin County, Tennessee

NWS Huntsville, AL issued this tornado warning at Apr 27, 2011, 7:22 PM CDT for Franklin County, Tennessee. It was in force for 23 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: Apr 27, 2011, 7:22 PM CDT (00:22 UTC)
Expired: Apr 27, 2011, 7:45 PM CDT
In force: 23 min
Issued by: NWS Huntsville, AL
Area: Storm-based polygon

County Franklin County, TN

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Apr 27, 1:42 PM CDT	Tornado Watch PDS	SPC	8 hr

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 00:00Z, 0.4 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: 308 J/kg
Mixed-layer CIN: -100 J/kg
Mixed-layer LCL: 669 m above ground
0-6 km bulk shear: 104 kt
0-1 km storm-relative helicity: 169 m²/s²
0-3 km storm-relative helicity: 247 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 3.3

Open this sounding in Storm Lab

The text

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

084 
WFUS54 KHUN 280022
TORHUN
TNC051-280045-
/O.NEW.KHUN.TO.W.0113.110428T0022Z-110428T0045Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE HUNTSVILLE AL
722 PM CDT WED APR 27 2011

THE NATIONAL WEATHER SERVICE IN HUNTSVILLE HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHERN FRANKLIN COUNTY IN TENNESSEE...

* UNTIL 745 PM CDT

* AT 722 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 6 MILES
  SOUTHEAST OF MAXWELL...OR ABOUT 11 MILES SOUTH OF WINCHESTER...
  MOVING NORTHEAST AT 60 MPH.

* LOCATIONS NEAR THE PATH OF THIS TORNADO INCLUDE...
  COWAN.
  ST. ANDREWS.
  SEWANEE.
  SHERWOOD.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR
OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1000 PM CDT WEDNESDAY EVENING
FOR NORTHERN ALABAMA AND CENTRAL TENNESSEE.

&&

LAT...LON 3527 8589 3523 8589 3523 8586 3502 8587
      3499 8596 3500 8618 3509 8625 3530 8591
TIME...MOT...LOC 0022Z 236DEG 52KT 3507 8608

$$

KDW

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 27, 7:37 PM CDT	Tornado Warning	HUN	Franklin, Lincoln	23 min
Apr 27, 8:25 PM CDT	Areal Flood Warning	HUN	Franklin, Lincoln, Moore	4 hr
Apr 28, 12:23 AM CDT	Areal Flood Warning	HUN	Franklin, Lincoln, Moore	8 hr
Apr 28, 9:16 AM CDT	Areal Flood Warning	HUN	Franklin, Lincoln, Moore	48 hr

Nearby

Tornado Warnings in Tennessee, 2011 Every tornado warning in 2011 Tornadoes in 2011

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.