Alert archive / Mississippi / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 144, NWS Memphis, TN
NWS Memphis, TN issued this severe thunderstorm warning at May 9, 2021, 7:18 PM CDT for Calhoun County, Chickasaw County, Yalobusha County, Mississippi. It was in force for 27 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
- May 9, 2021, 7:18 PM CDT (00:18 UTC)
- Expired
- May 9, 2021, 7:45 PM CDT
- In force
- 27 min
- Issued by
- NWS Memphis, TN
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Calhoun County, MS, Chickasaw County, MS, Yalobusha County, MS
The radar
The Columbus AFB radar (KGWX), 93 km from the middle of the area, began a volume at 00:17 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 |
|---|---|---|---|
| May 9, 2:27 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
Little Rock, AR (KLZK), launched 00:00Z, 0.3 hours before the alert went out and 119 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
- 762 J/kg
- Mixed-layer CIN
- -33 J/kg
- Mixed-layer LCL
- 787 m above ground
- 0-6 km bulk shear
- 48 kt
- 0-1 km storm-relative helicity
- -37 m²/s²
- 0-3 km storm-relative helicity
- 81 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 1.6
The text
As transmitted.
312
WUUS54 KMEG 100018
SVRMEG
MSC013-017-161-100045-
/O.NEW.KMEG.SV.W.0144.210510T0018Z-210510T0045Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Memphis TN
718 PM CDT Sun May 9 2021
The National Weather Service in Memphis has issued a
* Severe Thunderstorm Warning for...
Southwestern Chickasaw County in northeastern Mississippi...
East central Yalobusha County in northwestern Mississippi...
Central Calhoun County in northeastern Mississippi...
* Until 745 PM CDT.
* At 718 PM CDT, a severe thunderstorm was located 8 miles southeast
of Velma, or 12 miles southeast of Water Valley, moving southeast
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...
Houston, Bruce, Calhoun City, Vardaman, Derma, Pittsboro, Pyland,
Big Creek, Benwood, Bounds, Thorn, Pine Valley, Reid, Loyd, Ellard,
Shepherd, Tabbville, Skuna, Atlanta and Tyson.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3396 8964 3412 8955 3394 8900 3374 8912
3374 8919 3373 8919
TIME...MOT...LOC 0018Z 296DEG 38KT 3401 8952
HAIL...1.00IN
WIND...60MPH
$$
SGW1 follow-up statement
808
WWUS54 KMEG 100043
SVSMEG
Severe Weather Statement
National Weather Service Memphis TN
743 PM CDT Sun May 9 2021
MSC013-017-161-100053-
/O.EXP.KMEG.SV.W.0144.000000T0000Z-210510T0045Z/
Chickasaw MS-Yalobusha MS-Calhoun MS-
743 PM CDT Sun May 9 2021
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN CHICKASAW...EAST
CENTRAL YALOBUSHA AND CENTRAL CALHOUN COUNTIES WILL EXPIRE AT 745 PM
CDT...
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning will be allowed to expire.
A Severe Thunderstorm Watch remains in effect until 900 PM CDT for
northeastern and northwestern Mississippi.
LAT...LON 3396 8964 3412 8955 3394 8900 3374 8912
3374 8919 3373 8919
TIME...MOT...LOC 0043Z 296DEG 38KT 3390 8926
$$
SGWThe office that day
Everything else NWS Memphis, TN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 9, 7:05 PM CDT | Severe Thunderstorm Warning | MEG | Chickasaw, Lafayette, Lee, Pontotoc, Union | 40 min |
| May 9, 7:21 PM CDT | Special Weather Statement | MEG | Coahoma, Quitman | 24 min |
| May 9, 7:28 PM CDT | Special Weather Statement | MEG | Tishomingo | 32 min |
| May 9, 7:28 PM CDT | Severe Thunderstorm Warning | MEG | Chickasaw, Itawamba, Lee, Monroe, Pontotoc, Union | 67 min |
| May 9, 7:44 PM CDT | Severe Thunderstorm Warning | MEG | Tishomingo | 16 min |
| May 9, 7:45 PM CDT | Areal Flood Advisory | MEG | Coahoma, Panola, Quitman, Tallahatchie | 2 hr |
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.