Alert archive / Tennessee / Tornado Warnings in 2011
Tornado Warning 47, NWS Nashville, TN
NWS Nashville, TN issued this tornado warning at Apr 24, 2011, 12:37 PM CDT for Davidson County, Robertson County, Sumner County, Tennessee. It was in force for 38 min. 1 report came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Apr 24, 2011, 12:37 PM CDT (17:37 UTC)
- Expired
- Apr 24, 2011, 1:15 PM CDT
- In force
- 38 min
- Issued by
- NWS Nashville, TN
- Area
- Storm-based polygon
Counties Davidson County, TN, Robertson County, TN, Sumner County, TN
The radar
The Nashville radar (KOHX), 15 km from the middle of the area, began a volume at 17:39 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Apr 24, 1:09 PM CDT | HAIL 0.88 | 1 Nne Gallatin, TN |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Nashville Metro, TN (KBNA), launched 12:00Z, 5.6 hours before the alert went out and 28 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.
- Mixed-layer CAPE
- 1536 J/kg
- Mixed-layer CIN
- -11 J/kg
- Mixed-layer LCL
- 557 m above ground
- 0-6 km bulk shear
- 43 kt
- 0-1 km storm-relative helicity
- 163 m²/s²
- 0-3 km storm-relative helicity
- 219 m²/s²
- Significant tornado parameter
- 1.2
- Supercell composite
- 5.8
The text
As transmitted, in the capitals the NWS used until 2016.
289
WFUS54 KOHX 241737
TOROHX
TNC037-147-165-241815-
/O.NEW.KOHX.TO.W.0047.110424T1737Z-110424T1815Z/
BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE NASHVILLE TN
1237 PM CDT SUN APR 24 2011
THE NATIONAL WEATHER SERVICE IN NASHVILLE HAS ISSUED A
* TORNADO WARNING FOR...
NORTH CENTRAL DAVIDSON COUNTY IN MIDDLE TENNESSEE...
SOUTHEASTERN ROBERTSON COUNTY IN MIDDLE TENNESSEE...
SUMNER COUNTY IN MIDDLE TENNESSEE...
* UNTIL 115 PM CDT
* AT 1234 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS
STORM WAS LOCATED NEAR RIDGETOP...OR 11 MILES SOUTHEAST OF
SPRINGFIELD...AND MOVING EAST AT 35 MPH.
* LOCATIONS IMPACTED INCLUDE...
GALLATIN...GOODLETTSVILLE...MILLERSVILLE...HENDERSONVILLE...WHITE
HOUSE AND PORTLAND.
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.
&&
LAT...LON 3662 8644 3633 8631 3632 8634 3634 8634
3635 8637 3631 8638 3631 8641 3633 8644
3629 8653 3632 8654 3628 8655 3624 8680
3644 8689
TIME...MOT...LOC 1737Z 249DEG 30KT 3637 8675
$$
BOYD1 follow-up statement
982
WWUS54 KOHX 241755
SVSOHX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NASHVILLE TN
1255 PM CDT SUN APR 24 2011
TNC037-147-241804-
/O.CAN.KOHX.TO.W.0047.000000T0000Z-110424T1815Z/
DAVIDSON TN-ROBERTSON TN-
1255 PM CDT SUN APR 24 2011
...THE TORNADO WARNING FOR SOUTHEASTERN ROBERTSON AND NORTH CENTRAL
DAVIDSON COUNTIES IS CANCELLED...
THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED AREA.
LAT...LON 3634 8632 3634 8634 3635 8637 3634 8638
3631 8666 3645 8667 3648 8664 3650 8664
3653 8640
TIME...MOT...LOC 1754Z 268DEG 103KT 3641 8651
$$
TNC165-241815-
/O.CON.KOHX.TO.W.0047.000000T0000Z-110424T1815Z/
SUMNER TN-
1255 PM CDT SUN APR 24 2011
...A TORNADO WARNING REMAINS IN EFFECT FOR SOUTHERN SUMNER COUNTY
UNTIL 115 PM CDT...
AT 1253 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS
STORM WAS LOCATED 5 MILES WEST OF GALLATIN...MOVING EAST AT 30 MPH.
LOCATIONS IMPACTED INCLUDE...
GALLATIN.
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.
&&
LAT...LON 3634 8632 3634 8634 3635 8637 3634 8638
3631 8666 3645 8667 3648 8664 3650 8664
3653 8640
TIME...MOT...LOC 1754Z 268DEG 103KT 3641 8651
$$
BOYDThe office that day
Everything else NWS Nashville, TN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 24, 12:34 AM CDT | Severe Thunderstorm Warning | OHX | Cheatham, Davidson, Robertson | 26 min |
| Apr 24, 12:13 PM CDT | Severe Thunderstorm Warning | OHX | Davidson, Robertson, Sumner | 47 min |
| Apr 24, 12:47 PM CDT | Flash Flood Warning | OHX | Sumner | 118 min |
| Apr 24, 1:06 PM CDT | Tornado Warning | OHX | Sumner, Trousdale, Wilson | 24 min |
| Apr 24, 1:22 PM CDT | Severe Thunderstorm Warning | OHX | Macon, Sumner, Trousdale | 39 min |
| Apr 24, 1:36 PM CDT | Severe Thunderstorm Warning | OHX | Clay, Macon, Sumner, Trousdale | 54 min |
| Apr 24, 2:24 PM CDT | Severe Thunderstorm Warning | OHX | Clay, Jackson, Macon, Pickett | 66 min |
Nearby
Tornado Warnings in Tennessee, 2011Every tornado warning in 2011Tornadoes 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.