Alert archive / Tennessee / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 32, NWS Memphis, TN

March 27, 2021Shelby County, Tennessee; DeSoto County, Mississippi

NWS Memphis, TN issued this severe thunderstorm warning at Mar 27, 2021, 5:34 AM CDT for Shelby County, Tennessee; DeSoto County, Mississippi. It was in force for 41 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 27, 2021, 5:34 AM CDT (10:34 UTC)
Expired: Mar 27, 2021, 6:15 AM CDT
In force: 41 min
Issued by: NWS Memphis, TN
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties DeSoto County, MS, Shelby County, TN

The radar

The Memphis radar (KNQA), 33 km from the middle of the area, began a volume at 10:35 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 27, 5:35 AM CDT	TSTM WND DMG	East Memphis, TN	LARGE TREE DOWN ON CHERRY ROAD NEAR PARK IN MEMPHIS.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Little Rock, AR (KLZK), launched 00:00Z, 10.6 hours before the alert went out and 29 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: 1500 m above ground
0-6 km bulk shear: 69 kt
0-1 km storm-relative helicity: 117 m²/s²
0-3 km storm-relative helicity: 264 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

865 
WUUS54 KMEG 271034
SVRMEG
MSC033-TNC157-271115-
/O.NEW.KMEG.SV.W.0032.210327T1034Z-210327T1115Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Memphis TN
534 AM CDT Sat Mar 27 2021

The National Weather Service in Memphis has issued a

* Severe Thunderstorm Warning for...
  Northeastern DeSoto County in northwestern Mississippi...
  Southeastern Shelby County in western Tennessee...

* Until 615 AM CDT.

* At 533 AM CDT, a severe thunderstorm was located over Whitehaven,
  or near Southaven, 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...
  Bartlett, Southaven, Collierville, Germantown, Olive Branch, Horn
  Lake, Hernando, T O Fuller State Park, Cordova, Memphis, Lakeland,
  Arlington, Southwest Memphis, Lynchburg, Southeast Memphis,
  Whitehaven, Midtown Memphis, Piperton, Lenow and Cedarview.

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 3527 8971 3510 8964 3500 8964 3499 8972
      3494 8972 3483 9005 3505 9016
TIME...MOT...LOC 1033Z 246DEG 26KT 3501 9000 

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

1 follow-up statement

235 
WWUS54 KMEG 271105
SVSMEG

Severe Weather Statement
National Weather Service Memphis TN
605 AM CDT Sat Mar 27 2021

MSC033-TNC157-271115-
/O.EXP.KMEG.SV.W.0032.000000T0000Z-210327T1115Z/
DeSoto MS-Shelby TN-
605 AM CDT Sat Mar 27 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN DESOTO AND
SOUTHEASTERN SHELBY COUNTIES WILL EXPIRE AT 615 AM CDT...
        
The storm which prompted the warning has moved out of the area.
Therefore, the warning will be allowed to expire.  However heavy rain
is still possible with this thunderstorm.

LAT...LON 3527 8971 3510 8964 3500 8964 3499 8972
      3494 8972 3483 9005 3505 9016
TIME...MOT...LOC 1105Z 246DEG 26KT 3510 8975 

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 27, 2:44 AM CDT	Flash Flood Watch	MEG	Benton, Carroll, Chester, Crockett, Decatur, Dyer and 15 more	24 hr
Mar 27, 4:59 AM CDT	Special Weather Statement	MEG	Tipton	31 min
Mar 27, 5:06 AM CDT	Special Weather Statement	MEG	Carroll, Madison	24 min
Mar 27, 5:13 AM CDT	Flash Flood Warning	MEG	Shelby	3 hr
Mar 27, 5:14 AM CDT	Flash Flood Warning	MEG	Madison	3 hr
Mar 27, 5:20 AM CDT	Special Weather Statement	MEG	Shelby	40 min
Mar 27, 5:37 AM CDT	Special Weather Statement	MEG	Benton, Carroll	53 min
Mar 27, 5:56 AM CDT	Special Weather Statement	MEG	Fayette	49 min
Mar 27, 7:00 AM CDT	Special Weather Statement	MEG	Chester, Henderson, McNairy	30 min
Mar 27, 7:16 AM CDT	Special Weather Statement	MEG	Decatur, Hardin, Henderson	29 min
Mar 27, 9:01 AM CDT	Areal Flood Advisory	MEG	Fayette, Haywood, Shelby, Tipton	3 hr
Mar 27, 9:33 AM CDT	Flash Flood Warning	MEG	Chester, Decatur, Hardeman, Hardin, Henderson, McNairy	5 hr
Mar 27, 11:29 AM CDT	River Flood Warning	MEG	Fayette, Shelby	44 hr
Mar 27, 11:29 AM CDT	River Flood Warning	MEG	Madison	4 days
Mar 27, 11:29 AM CDT	River Flood Warning	MEG	Crockett, Dyer, Lauderdale	14 days
Mar 27, 11:29 AM CDT	River Flood Warning	MEG	Shelby	23 hr
Mar 27, 3:45 PM CDT	Special Weather Statement	MEG	Tipton	30 min
Mar 27, 3:50 PM CDT	Special Weather Statement	MEG	Madison	25 min
Mar 27, 4:05 PM CDT	Severe Thunderstorm Warning	MEG	Chester, Hardeman, Henderson, Madison	40 min
Mar 27, 4:15 PM CDT	Special Weather Statement	MEG	Lauderdale	30 min
Mar 27, 4:35 PM CDT	Tornado Warning	MEG	Chester, Decatur, Henderson	40 min
Mar 27, 5:05 PM CDT	Areal Flood Advisory	MEG	Chester, Henderson, Madison	3 hr
Mar 27, 5:08 PM CDT	Tornado Warning	MEG	Decatur, Henderson	22 min
Mar 27, 5:42 PM CDT	Tornado Warning	MEG	Lauderdale	48 min
Mar 27, 6:23 PM CDT	Tornado Warning Tornado observed	MEG	Lauderdale	52 min
Mar 27, 4:51 AM CDT	Special Weather Statement	MEG	DeSoto	24 min
Mar 27, 6:01 AM CDT	Special Weather Statement	MEG	Union	29 min
Mar 27, 6:32 AM CDT	Special Weather Statement	MEG	Alcorn, Tippah	43 min
Mar 27, 7:52 AM CDT	Special Weather Statement	MEG	Alcorn, Prentiss, Tippah	38 min
Mar 27, 9:07 AM CDT	Areal Flood Advisory	MEG	Alcorn, Prentiss, Tippah	4 hr
Mar 27, 4:48 PM CDT	Severe Thunderstorm Warning	MEG	Monroe	42 min
Mar 27, 5:31 PM CDT	Special Weather Statement	MEG	Itawamba	29 min

Nearby

Severe Thunderstorm Warnings in Tennessee, 2021 Severe Thunderstorm Warnings in Mississippi, 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.