Alert archive / Mississippi / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 20, NWS Memphis, TN
NWS Memphis, TN issued this severe thunderstorm warning at Mar 17, 2021, 4:43 PM CDT for 4 counties in Mississippi. It was in force for 32 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
- Mar 17, 2021, 4:43 PM CDT (21:43 UTC)
- Expired
- Mar 17, 2021, 5:15 PM CDT
- In force
- 32 min
- Issued by
- NWS Memphis, TN
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Benton County, MS, Lafayette County, MS, Marshall County, MS, Union County, MS
The radar
The Columbus AFB radar (KGWX), 102 km from the middle of the area, began a volume at 21:44 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 |
|---|---|---|---|
| Mar 17, 12:57 PM CDT | Tornado Watch | SPC | 6 hr |
The nearest sounding before it
Little Rock, AR (KLZK), launched 12:00Z, 9.7 hours before the alert went out and 79 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.
632
WUUS54 KMEG 172143
SVRMEG
MSC009-071-093-145-172215-
/O.NEW.KMEG.SV.W.0020.210317T2143Z-210317T2215Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Memphis TN
443 PM CDT Wed Mar 17 2021
The National Weather Service in Memphis has issued a
* Severe Thunderstorm Warning for...
Northeastern Lafayette County in northwestern Mississippi...
Western Union County in northeastern Mississippi...
Southeastern Marshall County in northwestern Mississippi...
South central Benton County in northeastern Mississippi...
* Until 515 PM CDT.
* At 442 PM CDT, a severe thunderstorm was located near Cambridge, or
12 miles east of Oxford, 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...
New Albany, Cambridge, Denmark, Pinedale, Etta, Hickory Flat,
Myrtle, Shari, Altus, Keel, Poolville, Martintown, Old Myrtle,
Burt, Pumpkin Center, Lafayette Springs, Cornersville, Smalco,
Glenfield and Winborn.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Tornado Watch remains in effect until 700 PM CDT for northeastern
and northwestern Mississippi.
For your protection move to an interior room on the lowest floor of a
building.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 3436 8946 3468 8923 3452 8895 3438 8915
3438 8924 3431 8925 3428 8929
TIME...MOT...LOC 2142Z 211DEG 27KT 3441 8931
HAIL...1.00IN
WIND...60MPH
$$
MJH1 follow-up statement
605
WWUS54 KMEG 172209
SVSMEG
Severe Weather Statement
National Weather Service Memphis TN
509 PM CDT Wed Mar 17 2021
MSC009-071-093-145-172218-
/O.EXP.KMEG.SV.W.0020.000000T0000Z-210317T2215Z/
Lafayette MS-Union MS-Marshall MS-Benton MS-
509 PM CDT Wed Mar 17 2021
...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN LAFAYETTE...
WESTERN UNION...SOUTHEASTERN MARSHALL AND SOUTH CENTRAL BENTON
COUNTIES WILL EXPIRE AT 515 PM CDT...
The storm which prompted the warning has weakened below severe
limits, and has exited the warned area. Therefore, the warning will
be allowed to expire. However heavy rain is still possible with this
thunderstorm.
A Tornado Watch remains in effect until 700 PM CDT for northeastern
and northwestern Mississippi.
To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
Memphis.
LAT...LON 3436 8946 3468 8923 3452 8895 3438 8915
3438 8924 3431 8925 3428 8929
TIME...MOT...LOC 2208Z 211DEG 27KT 3457 8920
$$
MJHThe office that day
Everything else NWS Memphis, TN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 17, 3:38 AM CDT | Severe Thunderstorm Warning | MEG | Calhoun, Lafayette, Pontotoc, Yalobusha | 37 min |
| Mar 17, 5:24 AM CDT | Severe Thunderstorm Warning | MEG | Panola, Tate | 20 min |
| Mar 17, 6:35 AM CDT | Severe Thunderstorm Warning | MEG | Coahoma, Panola, Quitman, Tallahatchie, Tunica | 40 min |
| Mar 17, 6:49 AM CDT | Severe Thunderstorm Warning | MEG | Marshall | 14 min |
| Mar 17, 7:12 AM CDT | Severe Thunderstorm Warning | MEG | Lafayette, Marshall, Panola, Quitman, Tallahatchie, Tate and 1 more | 48 min |
| Mar 17, 8:24 AM CDT | Areal Flood Advisory | MEG | Benton, DeSoto, Marshall, Tate, Tunica | 2 hr |
| Mar 17, 9:04 AM CDT | Flash Flood Warning | MEG | Alcorn, Benton, DeSoto, Marshall, Tate, Tippah | 3 hr |
| Mar 17, 10:29 AM CDT | Flash Flood Warning | MEG | Alcorn, Prentiss, Tishomingo | 3 hr |
| Mar 17, 3:18 PM CDT | Tornado Warning | MEG | Itawamba, Prentiss, Tishomingo | 27 min |
| Mar 17, 4:17 PM CDT | Severe Thunderstorm Warning | MEG | Calhoun, Lafayette, Pontotoc, Union | 28 min |
| Mar 17, 4:28 PM CDT | Areal Flood Advisory | MEG | Itawamba, Prentiss, Tishomingo | 5 hr |
| Mar 17, 4:52 PM CDT | Flash Flood Warning | MEG | Itawamba, Lee, Prentiss, Tishomingo | 4 hr |
| Mar 17, 4:56 PM CDT | Severe Thunderstorm Warning | MEG | Chickasaw, Itawamba, Lee, Pontotoc, Prentiss, Union | 49 min |
| Mar 17, 4:58 PM CDT | Severe Thunderstorm Warning | MEG | Calhoun, Chickasaw, Pontotoc | 20 min |
| Mar 17, 5:45 PM CDT | Severe Thunderstorm Warning | MEG | Chickasaw, Itawamba, Lee, Monroe | 45 min |
| Mar 17, 5:55 PM CDT | Flash Flood Warning | MEG | Calhoun, Chickasaw | 4 hr |
| Mar 17, 5:55 PM CDT | Tornado Warning | MEG | Chickasaw, Itawamba, Lee, Monroe | 35 min |
| Mar 17, 6:28 PM CDT | Severe Thunderstorm Warning | MEG | Itawamba, Monroe | 47 min |
| Mar 17, 6:33 PM CDT | Special Weather Statement | MEG | Lafayette, Marshall, Yalobusha | 42 min |
Nearby
Severe Thunderstorm Warnings in Mississippi, 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.