Alert archive / Tennessee / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 88, NWS Memphis, TN

April 9, 20214 counties in Tennessee

NWS Memphis, TN issued this severe thunderstorm warning at Apr 9, 2021, 6:56 PM CDT for 4 counties in Tennessee. It was in force for 15 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, 6:56 PM CDT (23:56 UTC)
Expired: Apr 9, 2021, 7:11 PM CDT
In force: 15 min
Issued by: NWS Memphis, TN
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Crockett County, TN, Gibson County, TN, Haywood County, TN, Madison County, TN

The radar

The Memphis radar (KNQA), 107 km from the middle of the area, began a volume at 23:56 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 12:00Z, 11.9 hours before the alert went out and 145 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: 2139 m above ground
0-6 km bulk shear: 52 kt
0-1 km storm-relative helicity: 108 m²/s²
0-3 km storm-relative helicity: 141 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.0

Open this sounding in Storm Lab

The text

As transmitted.

351 
WUUS54 KMEG 092356 RRA
SVRMEG
TNC033-053-075-113-100045-
/O.NEW.KMEG.SV.W.0088.210409T2356Z-210410T0045Z/

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

The National Weather Service in Memphis has issued a

* Severe Thunderstorm Warning for...
  Southeastern Crockett County in western Tennessee...
  Southeastern Gibson County in western Tennessee...
  East central Haywood County in western Tennessee...
  Madison County in western Tennessee...

* Until 745 PM CDT.

* At 656 PM CDT, a severe thunderstorm was located near Mercer, or 11
  miles east of Brownsville, moving northeast at 25 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...
  Jackson, Humboldt, Fairview, Three Way, Bemis, Adair, Mercer,
  Carroll, Medina, Neely, Huntersville, Westover, Gilmore, Sitka,
  Leighton, East Union, Claybrook, Youngs Crossing, West and Gum
  Flat.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3566 8861 3544 8906 3558 8919 3590 8878
      3581 8870 3579 8871 3579 8868 3571 8861
TIME...MOT...LOC 2356Z 231DEG 23KT 3556 8906 

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

SJM

1 follow-up statement

569 
WWUS54 KMEG 100011
SVSMEG

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

TNC033-053-075-113-100021-
/O.CAN.KMEG.SV.W.0088.000000T0000Z-210410T0045Z/
Crockett TN-Gibson TN-Haywood TN-Madison TN-
711 PM CDT Fri Apr 9 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN CROCKETT...
SOUTHEASTERN GIBSON...EAST CENTRAL HAYWOOD AND MADISON COUNTIES IS
CANCELLED...
                
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning has been cancelled.

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

LAT...LON 3566 8861 3544 8906 3558 8919 3590 8878
      3581 8870 3579 8871 3579 8868 3571 8861
TIME...MOT...LOC 0010Z 231DEG 23KT 3562 8896 

$$

SJM

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 9, 5:12 PM CDT	Severe Thunderstorm Warning	MEG	Haywood, Lauderdale, Tipton	48 min
Apr 9, 5:17 PM CDT	Special Weather Statement	MEG	Fayette	28 min
Apr 9, 5:19 PM CDT	Special Weather Statement	MEG	Dyer	26 min
Apr 9, 5:27 PM CDT	Severe Thunderstorm Warning	MEG	Dyer, Lake, Obion	26 min
Apr 9, 5:34 PM CDT	Severe Thunderstorm Warning	MEG	Crockett, Haywood, Lauderdale, Madison, Tipton	41 min
Apr 9, 5:36 PM CDT	Severe Thunderstorm Warning	MEG	Fayette, Hardeman	39 min
Apr 9, 6:08 PM CDT	Severe Thunderstorm Warning	MEG	Crockett, Gibson, Haywood, Madison	52 min
Apr 9, 6:10 PM CDT	Severe Thunderstorm Warning	MEG	Chester, Fayette, Hardeman, Haywood, Madison	50 min
Apr 9, 6:28 PM CDT	Severe Thunderstorm Warning	MEG	Dyer, Gibson, Obion, Weakley	29 min
Apr 9, 6:56 PM CDT	Severe Thunderstorm Warning	MEG	Chester, Hardeman, McNairy, Madison	49 min

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.