Alert archive / Tennessee / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 90, NWS Memphis, TN

April 9, 2021Chester County, Hardeman County, McNairy County, Tennessee

NWS Memphis, TN issued this severe thunderstorm warning at Apr 9, 2021, 7:05 PM CDT for Chester County, Hardeman County, McNairy County, Tennessee. It was in force for 40 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 9, 2021, 7:05 PM CDT (00:05 UTC)
Expired: Apr 9, 2021, 7:45 PM CDT
In force: 40 min
Issued by: NWS Memphis, TN
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Chester County, TN, Hardeman County, TN, McNairy County, TN

The radar

The Memphis radar (KNQA), 121 km from the middle of the area, began a volume at 00:07 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
Apr 9, 3:42 PM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Little Rock, AR (KLZK), launched 00:00Z, 0.1 hours before the alert went out and 134 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 2032 m above ground
0-6 km bulk shear: 41 kt
0-1 km storm-relative helicity: 326 m²/s²
0-3 km storm-relative helicity: 590 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.3

Open this sounding in Storm Lab

The text

As transmitted.

127 
WUUS54 KMEG 100005
SVRMEG
TNC023-069-109-100045-
/O.NEW.KMEG.SV.W.0090.210410T0005Z-210410T0045Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Memphis TN
705 PM CDT Fri Apr 9 2021

The National Weather Service in Memphis has issued a

* Severe Thunderstorm Warning for...
  Southeastern Hardeman County in western Tennessee...
  McNairy County in western Tennessee...
  South central Chester County in western Tennessee...

* Until 745 PM CDT.

* At 705 PM CDT, a severe thunderstorm was located over Big Hill Pond
  State Park, moving northeast at 30 mph.

  HAZARD...60 mph wind gusts and quarter size hail.

  SOURCE...Radar indicated.

  IMPACT...Hail damage to vehicles is expected. Expect wind damage 
           to roofs, siding, and trees.

* Locations impacted include...
  Henderson, Selmer, Big Hill Pond State Park, Adamsville,
  Pocahontas, Robertson, McNairy, Bethel Springs, Eastview, Ramer,
  Finger, Forty Forks, Hickory Flats, New Lawton, Martin Camp, Rose
  Creek, Good Hope, Old Lawton, Essary Springs and Cypress.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

Large hail and damaging winds and continuous cloud to ground
lightning is occurring with this storm. Move indoors immediately.
Lightning is one of nature's leading killers. Remember, if you can
hear thunder, you are close enough to be struck by lightning.

&&

LAT...LON 3531 8837 3528 8837 3500 8863 3500 8882
      3502 8887 3545 8862 3532 8836
TIME...MOT...LOC 0005Z 210DEG 25KT 3505 8873 

HAIL...1.00IN
WIND...60MPH
 
$$

SJM

1 follow-up statement

165 
WWUS54 KMEG 100025
SVSMEG

Severe Weather Statement
National Weather Service Memphis TN
725 PM CDT Fri Apr 9 2021

TNC069-100034-
/O.CAN.KMEG.SV.W.0090.000000T0000Z-210410T0045Z/
Hardeman TN-
725 PM CDT Fri Apr 9 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN HARDEMAN COUNTY
IS CANCELLED...
    
The severe thunderstorm which prompted the warning has moved out of 
the warned area. Therefore, the warning has been cancelled.

A Severe Thunderstorm Watch remains in effect until 1100 PM CDT for
western Tennessee.

LAT...LON 3531 8837 3528 8837 3517 8847 3517 8868
      3518 8878 3545 8862 3532 8836
TIME...MOT...LOC 0024Z 207DEG 30KT 3522 8863 

$$

TNC023-109-100045-
/O.CON.KMEG.SV.W.0090.000000T0000Z-210410T0045Z/
McNairy TN-Chester TN-
725 PM CDT Fri Apr 9 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 745 PM CDT
FOR NORTHERN MCNAIRY AND SOUTH CENTRAL CHESTER COUNTIES...

At 724 PM CDT, a severe thunderstorm was located near Selmer, moving
northeast at 35 mph.

HAZARD...Ping pong ball size hail and 60 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...People and animals outdoors will be injured. Expect hail 
         damage to roofs, siding, windows, and vehicles. Expect wind 
         damage to roofs, siding, and trees.

Locations impacted include...
Henderson, Selmer, Adamsville, Robertson, McNairy, Bethel Springs,
Finger, Forty Forks, Hickory Flats, New Lawton, Martin Camp, Rose
Creek, Good Hope, Old Lawton and Purdy.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

Continuous cloud to ground lightning is occurring with this storm.
Move indoors immediately. Lightning is one of nature's leading
killers. Remember, if you can hear thunder, you are close enough to
be struck by lightning.

&&

LAT...LON 3531 8837 3528 8837 3517 8847 3517 8868
      3518 8878 3545 8862 3532 8836
TIME...MOT...LOC 0024Z 207DEG 30KT 3522 8863 

HAIL...1.50IN
WIND...60MPH
 
$$

SJM

The office that day

Everything else NWS Memphis, TN issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 9, 7:41 PM CDT	Areal Flood Advisory	MEG	Crockett, Haywood, Madison	2 hr
Apr 9, 7:41 PM CDT	Severe Thunderstorm Warning	MEG	Chester, Hardin, Henderson, McNairy	17 min
Apr 9, 8:01 PM CDT	Severe Thunderstorm Warning	MEG	Hardin, McNairy	44 min
Apr 9, 8:21 PM CDT	Areal Flood Advisory	MEG	Chester, Hardeman, McNairy	88 min
Apr 9, 8:38 PM CDT	Areal Flood Advisory	MEG	Hardin, McNairy	3 hr
Apr 9, 8:45 PM CDT	Severe Thunderstorm Warning	MEG	McNairy	17 min
Apr 9, 9:59 PM CDT	Special Weather Statement	MEG	Chester, McNairy	31 min
Apr 10, 12:38 PM CDT	River Flood Advisory	MEG	Dyer, Lake, Lauderdale	56 hr

Nearby

Severe Thunderstorm Warnings in Tennessee, 2021 Every 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.