Alert archive / Mississippi / Tornado Watches in 2023
Tornado Watch 212
The Storm Prediction Center issued this tornado watch at May 11, 2023, 12:45 PM CDT for 6 parishes in Louisiana; 31 counties in Mississippi. It was in force for 7 hr.
The area
The outline as issued.
The facts
- Issued
- May 11, 2023, 12:45 PM CDT (17:45 UTC)
- Expired
- May 11, 2023, 8:00 PM CDT
- In force
- 7 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 1 in
- Strongest gust expected
- 55 kt
All 37 counties
East Feliciana Parish, LA, Pointe Coupee Parish, LA, Saint Helena Parish, LA, Tangipahoa Parish, LA, Washington Parish, LA, West Feliciana Parish, LA, Amite County, MS, Attala County, MS, Clarke County, MS, Copiah County, MS, Covington County, MS, Forrest County, MS, Franklin County, MS, Hinds County, MS, Jasper County, MS, Jefferson Davis County, MS, Jones County, MS, Kemper County, MS, Lamar County, MS, Lauderdale County, MS, Lawrence County, MS, Leake County, MS, Lincoln County, MS, Madison County, MS, Marion County, MS, Neshoba County, MS, Newton County, MS, Pearl River County, MS, Pike County, MS, Rankin County, MS, Scott County, MS, Simpson County, MS, Smith County, MS, Walthall County, MS, Wilkinson County, MS, Winston County, MS, Yazoo County, MS
The radar
The Jackson/Brandon,MS radar (KDGX), 42 km from the middle of the area, began a volume at 17:46 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 SPC expected
The probabilities SPC published with the watch, for the watch area over its life.
- Two or more tornadoes
- 30%
- One or more EF2 to EF5 tornadoes
- 10%
- Ten or more severe wind reports
- 50%
- One or more gusts of 65 knots or more
- 10%
- Ten or more severe hail reports
- 20%
- One or more hailstones of 2 inches or more
- 5%
- Six or more combined severe hail and wind reports
- 80%
Warnings issued inside it
15 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 11, 1:25 PM CDT | Severe Thunderstorm Warning | JAN | Claiborne, Copiah, Hinds, Issaquena, Madison, Rankin and 3 more | 95 min |
| May 11, 1:31 PM CDT | Severe Thunderstorm Warning | JAN | Humphreys, Issaquena, Madison, Sharkey, Washington, Yazoo | 74 min |
| May 11, 2:36 PM CDT | Severe Thunderstorm Warning | JAN | Attala, Carroll, Holmes, Leake, Leflore, Madison and 1 more | 54 min |
| May 11, 2:43 PM CDT | Severe Thunderstorm Warning | JAN | Leake, Rankin, Scott, Smith | 62 min |
| May 11, 3:19 PM CDT | Severe Thunderstorm Warning | JAN | Lincoln | 17 min |
| May 11, 3:22 PM CDT | Severe Thunderstorm Warning | JAN | Attala, Carroll, Choctaw, Grenada, Montgomery, Webster and 1 more | 68 min |
| May 11, 3:26 PM CDT | Severe Thunderstorm Warning | JAN | Jasper, Neshoba, Newton | 79 min |
| May 11, 3:52 PM CDT | Severe Thunderstorm Warning | JAN | Clay, Lowndes, Noxubee, Oktibbeha, Winston | 83 min |
| May 11, 3:56 PM CDT | Severe Thunderstorm Warning | JAN | Kemper, Lauderdale | 63 min |
| May 11, 4:24 PM CDT | Severe Thunderstorm Warning | JAN | Covington, Jefferson Davis | 22 min |
| May 11, 4:54 PM CDT | Severe Thunderstorm Warning | JAN | Jefferson Davis, Lawrence, Marion | 51 min |
| May 11, 5:14 PM CDT | Severe Thunderstorm Warning | JAN | Clarke, Jasper, Jones | 61 min |
| May 11, 5:20 PM CDT | Severe Thunderstorm Warning | JAN | Covington, Jefferson Davis, Lamar, Marion | 55 min |
| May 11, 6:09 PM CDT | Severe Thunderstorm Warning | JAN | Forrest, Lamar | 48 min |
| May 11, 6:16 PM CDT | Flash Flood Warning | LIX | Pike, Walthall | 2 hr |
Discussions around it
SPC mesoscale discussions over the same counties from four hours before the watch to its end.
The nearest sounding before it
Jackson, MS (KJAN), launched 12:00Z, 5.8 hours before the alert went out and 52 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
- 522 J/kg
- Mixed-layer CIN
- -70 J/kg
- Mixed-layer LCL
- 724 m above ground
- 0-6 km bulk shear
- 23 kt
- 0-1 km storm-relative helicity
- 45 m²/s²
- 0-3 km storm-relative helicity
- 101 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.4
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 11, 9:00 AM CDT | Mesoscale Discussion | SPC | Bienville, Caldwell, Catahoula, Claiborne, Concordia, De Soto and 19 more | 3 hr |
| May 11, 9:24 AM CDT | Tornado Watch | SPC | Avoyelles, Bienville, Caldwell, Catahoula, Concordia, De Soto and 19 more | 8 hr |
| May 11, 12:22 PM CDT | Mesoscale Discussion | SPC | Avoyelles, Caldwell, Catahoula, Concordia, East Carroll, East Feliciana and 17 more | 53 min |
| May 11, 3:02 PM CDT | Mesoscale Discussion | SPC | Washington | 88 min |
Nearby
Tornado Watches in Mississippi, 2023Tornado Watches in Louisiana, 2023Every tornado watch in 2023
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.