Alert archive / Tennessee / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 17, NWS Memphis, TN
NWS Memphis, TN issued this severe thunderstorm warning at Mar 17, 2021, 1:18 PM CDT for 6 counties in Tennessee. It was in force for 42 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
- Mar 17, 2021, 1:18 PM CDT (18:18 UTC)
- Expired
- Mar 17, 2021, 2:00 PM CDT
- In force
- 42 min
- Issued by
- NWS Memphis, TN
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Chester County, TN, Fayette County, TN, Hardeman County, TN, Haywood County, TN, Madison County, TN, Tipton County, TN
The radar
The Memphis radar (KNQA), 60 km from the middle of the area, began a volume at 18:22 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 |
|---|---|---|---|
| Mar 17, 1:53 PM CDT | TSTM WND DMG | Medon, TN | TREES DOWN AND LIKELY POWER LINES TOO ALONG RIVERSIDE AND ROCHELL ROAD IN MEDON. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
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 17, 12:59 PM CDT | Tornado Watch | SPC | 6 hr |
The nearest sounding before it
Little Rock, AR (KLZK), launched 12:00Z, 6.3 hours before the alert went out and 97 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
- 18 J/kg
- Mixed-layer CIN
- -262 J/kg
- Mixed-layer LCL
- 1466 m above ground
- 0-6 km bulk shear
- 65 kt
- 0-1 km storm-relative helicity
- 217 m²/s²
- 0-3 km storm-relative helicity
- 186 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.5
The text
As transmitted.
419
WUUS54 KMEG 171818
SVRMEG
TNC023-047-069-075-113-167-171900-
/O.NEW.KMEG.SV.W.0017.210317T1818Z-210317T1900Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Memphis TN
118 PM CDT Wed Mar 17 2021
The National Weather Service in Memphis has issued a
* Severe Thunderstorm Warning for...
East central Tipton County in western Tennessee...
Northern Fayette County in western Tennessee...
Northern Hardeman County in western Tennessee...
Haywood County in western Tennessee...
Western Madison County in western Tennessee...
West central Chester County in western Tennessee...
* Until 200 PM CDT.
* At 118 PM CDT, severe thunderstorms were located along a line
extending from 9 miles east of Covington to 6 miles northwest of
Somerville to near Eads, moving east at 50 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
* Locations impacted include...
Jackson, Brownsville, Bolivar, Chickasaw State Forest, Chickasaw
State Park, Whiteville, Somerville, Silerton, Hillville, Bemis,
Holly Grove, Dancyville, Cloverport, Mercer, Warren, Carroll,
Macon, Oakland, Stanton and Williston.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Tornado Watch remains in effect until 700 PM CDT for western
Tennessee.
A Tornado Watch remains in effect for the warned area. Tornadoes can
develop quickly from severe thunderstorms. Although a tornado is not
immediately likely, if one is spotted, act quickly and move to a
place of safety inside a sturdy structure such as a storm shelter or
small interior room.
&&
LAT...LON 3519 8892 3513 8964 3519 8964 3530 8949
3559 8956 3560 8953 3558 8950 3561 8947
3569 8907 3567 8902 3571 8897 3575 8880
3540 8874
TIME...MOT...LOC 1818Z 260DEG 46KT 3558 8949 3531 8942 3518 8958
HAIL...<.75IN
WIND...60MPH
$$1 follow-up statement
733
WWUS54 KMEG 171836
SVSMEG
Severe Weather Statement
National Weather Service Memphis TN
136 PM CDT Wed Mar 17 2021
TNC167-171845-
/O.CAN.KMEG.SV.W.0017.000000T0000Z-210317T1900Z/
Tipton TN-
136 PM CDT Wed Mar 17 2021
...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL TIPTON COUNTY IS
CANCELLED...
The storms which prompted the warning have moved out of the warned
area. Therefore, the warning has been cancelled.
A Tornado Watch remains in effect until 700 PM CDT for western
Tennessee.
LAT...LON 3519 8892 3519 8952 3523 8952 3530 8949
3539 8942 3545 8939 3552 8941 3562 8942
3569 8907 3567 8902 3571 8897 3575 8880
3540 8874
TIME...MOT...LOC 1835Z 260DEG 46KT 3562 8922 3535 8915 3522 8932
$$
TNC023-047-069-075-113-171900-
/O.CON.KMEG.SV.W.0017.000000T0000Z-210317T1900Z/
Fayette TN-Hardeman TN-Haywood TN-Madison TN-Chester TN-
136 PM CDT Wed Mar 17 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 200 PM CDT
FOR NORTHEASTERN FAYETTE...NORTHERN HARDEMAN...SOUTHERN HAYWOOD...
WESTERN MADISON AND WEST CENTRAL CHESTER COUNTIES...
At 135 PM CDT, severe thunderstorms were located along a line
extending from near Brownsville to near Whiteville to near
Somerville, moving east at 55 mph.
HAZARD...60 mph wind gusts and penny size hail.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Jackson, Brownsville, Bolivar, Chickasaw State Forest, Chickasaw
State Park, Whiteville, Somerville, Silerton, Hillville, Bemis, Holly
Grove, Dancyville, Cloverport, Mercer, Warren, Carroll, Oakland,
Toone, Medon and Neely.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Tornado Watch remains in effect until 700 PM CDT for western
Tennessee.
A tornado watch remains in effect for the warned area. Tornadoes can
develop quickly from severe thunderstorms. Although a tornado is not
immediately likely, if one is spotted act quickly and move to a place
of safety inside a sturdy structure, such as a storm shelter or small
interior room.
&&
LAT...LON 3519 8892 3519 8952 3523 8952 3530 8949
3539 8942 3545 8939 3552 8941 3562 8942
3569 8907 3567 8902 3571 8897 3575 8880
3540 8874
TIME...MOT...LOC 1835Z 260DEG 46KT 3562 8922 3535 8915 3522 8932
HAIL...0.75IN
WIND...60MPH
$$The office that day
Everything else NWS Memphis, TN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 17, 6:49 AM CDT | Severe Thunderstorm Warning | MEG | Fayette | 14 min |
| Mar 17, 9:04 AM CDT | Flash Flood Warning | MEG | Fayette, Hardeman, McNairy | 3 hr |
| Mar 17, 11:38 AM CDT | Flash Flood Warning | MEG | Shelby, Tipton | 3 hr |
| Mar 17, 12:24 PM CDT | Special Weather Statement | MEG | Shelby | 36 min |
| Mar 17, 12:31 PM CDT | Special Weather Statement | MEG | Tipton | 29 min |
| Mar 17, 1:54 PM CDT | Flash Flood Warning | MEG | Shelby | 3 hr |
| Mar 17, 1:58 PM CDT | Severe Thunderstorm Warning | MEG | Chester, Decatur, Hardeman, Henderson, Madison | 47 min |
| Mar 17, 5:26 PM CDT | River Flood Warning | MEG | Crockett, Dyer, Lauderdale | 15 hr |
Nearby
Severe Thunderstorm Warnings in Tennessee, 2021Every severe thunderstorm warning 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.