Alert archive / Tennessee / Tornado Warnings in 2021
Tornado Warning 5, NWS Huntsville, AL
NWS Huntsville, AL issued this tornado warning at Apr 8, 2021, 9:37 AM CDT for Franklin County, Tennessee. It was in force for 8 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 8, 2021, 9:37 AM CDT (14:37 UTC)
- Expired
- Apr 8, 2021, 9:45 AM CDT
- In force
- 8 min
- Issued by
- NWS Huntsville, AL
- Area
- Storm-based polygon
- Tornado
- Radar indicated
County Franklin County, TN
The radar
The Northeast Alabama radar (KHTX), 45 km from the middle of the area, began a volume at 14:38 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 nearest sounding before it
Nashville Metro, TN (KBNA), launched 12:00Z, 2.6 hours before the alert went out and 99 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
- 55 J/kg
- Mixed-layer CIN
- -72 J/kg
- Mixed-layer LCL
- 626 m above ground
- 0-6 km bulk shear
- 52 kt
- 0-1 km storm-relative helicity
- 354 m²/s²
- 0-3 km storm-relative helicity
- 375 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
The text
As transmitted.
558
WFUS54 KHUN 081437
TORHUN
TNC051-081445-
/O.NEW.KHUN.TO.W.0005.210408T1437Z-210408T1445Z/
BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Huntsville AL
937 AM CDT Thu Apr 8 2021
The National Weather Service in Huntsville Alabama has issued a
* Tornado Warning for...
North central Franklin County in Middle Tennessee...
* Until 945 AM CDT.
* At 937 AM CDT, a severe thunderstorm capable of producing a tornado
was located near Estill Springs, or 8 miles north of Winchester,
moving northeast 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...
Estill Springs, Woods Reservoir and Arnold AFB.
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 3534 8603 3531 8600 3526 8611 3531 8624
3534 8621 3533 8620 3536 8617 3535 8616
3536 8616
TIME...MOT...LOC 1437Z 226DEG 27KT 3532 8614
TORNADO...RADAR INDICATED
HAIL...<.75
$$
301 follow-up statement
828
WWUS54 KHUN 081444
SVSHUN
Severe Weather Statement
National Weather Service Huntsville AL
944 AM CDT Thu Apr 8 2021
TNC051-081454-
/O.EXP.KHUN.TO.W.0005.000000T0000Z-210408T1445Z/
Franklin TN-
944 AM CDT Thu Apr 8 2021
...THE TORNADO WARNING FOR NORTH CENTRAL FRANKLIN COUNTY WILL EXPIRE
AT 945 AM CDT...
The storm which prompted the warning has weakened below severe
limits, and has exited the warned area. Therefore, the warning will
be allowed to expire.
LAT...LON 3534 8603 3531 8600 3526 8611 3531 8624
3534 8621 3533 8620 3536 8617 3535 8616
3536 8616
TIME...MOT...LOC 1444Z 226DEG 27KT 3535 8610
$$
30The office that day
Everything else NWS Huntsville, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 8, 1:12 AM CDT | Special Weather Statement | HUN | Franklin, Lincoln, Moore | 48 min |
| Apr 8, 9:28 AM CDT | Special Weather Statement | HUN | Franklin | 32 min |
Nearby
Tornado Warnings in Tennessee, 2021Every tornado warning in 2021Tornadoes in 2021
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.