Alert archive / Mississippi / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 23, NWS Memphis, TN
NWS Memphis, TN issued this severe thunderstorm warning at Mar 17, 2021, 5:45 PM CDT for 4 counties in Mississippi. It was in force for 45 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, 5:45 PM CDT (22:45 UTC)
- Expired
- Mar 17, 2021, 6:30 PM CDT
- In force
- 45 min
- Issued by
- NWS Memphis, TN
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Chickasaw County, MS, Itawamba County, MS, Lee County, MS, Monroe County, MS
The radar
The Columbus AFB radar (KGWX), 41 km from the middle of the area, began a volume at 22:45 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, 11:36 AM CDT | Tornado Watch | SPC | 7 hr |
| Mar 17, 12:57 PM CDT | Tornado Watch | SPC | 6 hr |
The nearest sounding before it
Little Rock, AR (KLZK), launched 12:00Z, 10.8 hours before the alert went out and 141 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.
046
WUUS54 KMEG 172245
SVRMEG
MSC017-057-081-095-172330-
/O.NEW.KMEG.SV.W.0023.210317T2245Z-210317T2330Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Memphis TN
545 PM CDT Wed Mar 17 2021
The National Weather Service in Memphis has issued a
* Severe Thunderstorm Warning for...
Northeastern Chickasaw County in northeastern Mississippi...
Itawamba County in northeastern Mississippi...
Southern Lee County in northeastern Mississippi...
Northwestern Monroe County in northeastern Mississippi...
* Until 630 PM CDT.
* At 545 PM CDT, a severe thunderstorm was located near Okolona,
moving northeast at 45 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...
Fulton, Verona, Okolona, Tombigbee State Park, Shannon,
Plantersville, Mantachie, Tremont, New Salem, Evergreen, Clay,
Nettleton, Abney, Mooreville, Ballardsville, Leotis, Old Union,
Buena Vista, Cardsville and Van Vleet.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Tornado Watch remains in effect until 700 PM CDT for northeastern
Mississippi. A Tornado Watch also remains in effect until 700 PM CDT
for northeastern Mississippi.
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3383 8884 3396 8899 3408 8885 3408 8882
3410 8882 3444 8843 3424 8821
TIME...MOT...LOC 2245Z 227DEG 40KT 3395 8885
HAIL...1.00IN
WIND...60MPH
$$2 follow-up statements
359
WWUS54 KMEG 172307
SVSMEG
Severe Weather Statement
National Weather Service Memphis TN
607 PM CDT Wed Mar 17 2021
MSC017-172316-
/O.CAN.KMEG.SV.W.0023.000000T0000Z-210317T2330Z/
Chickasaw MS-
607 PM CDT Wed Mar 17 2021
...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN CHICKASAW COUNTY
IS CANCELLED...
The severe thunderstorm which prompted the warning has moved out of
the warned area. Therefore, the warning has been cancelled.
A Tornado Watch remains in effect until 700 PM CDT for northeastern
Mississippi. A Tornado Watch also remains in effect until 700 PM CDT
for northeastern Mississippi.
LAT...LON 3391 8872 3407 8872 3408 8873 3410 8876
3407 8881 3408 8882 3411 8876 3413 8878
3444 8843 3424 8821
TIME...MOT...LOC 2306Z 227DEG 40KT 3412 8864
$$
MSC057-081-095-172330-
/O.CON.KMEG.SV.W.0023.000000T0000Z-210317T2330Z/
Itawamba MS-Lee MS-Monroe MS-
607 PM CDT Wed Mar 17 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 630 PM CDT
FOR ITAWAMBA...SOUTHEASTERN LEE AND NORTHWESTERN MONROE COUNTIES...
At 606 PM CDT, a severe thunderstorm was located near Shannon, or 7
miles southeast of Verona, moving northeast at 45 mph.
HAZARD...60 mph wind gusts and half dollar size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage to
roofs, siding, and trees.
Locations impacted include...
Fulton, Verona, Tombigbee State Park, Shannon, Plantersville,
Mantachie, Tremont, New Salem, Evergreen, Clay, Nettleton, Abney,
Cardsville, Tilden, Mooreville, Ballardsville, Dorsey, Jacinto, Old
Union and Richmond.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Tornado Watch remains in effect until 700 PM CDT for northeastern
Mississippi. A Tornado Watch also remains in effect until 700 PM CDT
for northeastern Mississippi.
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3391 8872 3407 8872 3408 8873 3410 8876
3407 8881 3408 8882 3411 8876 3413 8878
3444 8843 3424 8821
TIME...MOT...LOC 2306Z 227DEG 40KT 3412 8864
HAIL...1.25IN
WIND...60MPH
$$840
WWUS54 KMEG 172307 RRA
SVSMEG
Severe Weather Statement
National Weather Service Memphis TN
607 PM CDT Wed Mar 17 2021
MSC057-081-095-172330-
/O.CON.KMEG.SV.W.0023.000000T0000Z-210317T2330Z/
Itawamba MS-Lee MS-Monroe MS-
607 PM CDT Wed Mar 17 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 630 PM CDT
FOR ITAWAMBA...SOUTHEASTERN LEE AND NORTHWESTERN MONROE COUNTIES...
At 607 PM CDT, a severe thunderstorm was located near Shannon, or
near Tombigbee State Park, moving northeast at 45 mph.
HAZARD...60 mph wind gusts and half dollar size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage to
roofs, siding, and trees.
Locations impacted include...
Fulton, Verona, Tombigbee State Park, Shannon, Plantersville,
Mantachie, Tremont, New Salem, Evergreen, Clay, Nettleton, Abney,
Cardsville, Tilden, Mooreville, Ballardsville, Dorsey, Jacinto, Old
Union and Richmond.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Tornado Watch remains in effect until 700 PM CDT for northeastern
Mississippi. A Tornado Watch also remains in effect until 700 PM CDT
for northeastern Mississippi.
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3391 8872 3407 8872 3408 8873 3410 8876
3411 8876 3413 8878 3444 8843 3424 8821
TIME...MOT...LOC 2307Z 227DEG 40KT 3414 8862
HAIL...1.25IN
WIND...60MPH
$$The 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, 4:43 PM CDT | Severe Thunderstorm Warning | MEG | Benton, Lafayette, Marshall, Union | 32 min |
| 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, 5:55 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.