Alert archive / Mississippi / Tornado Watches in 2023
Tornado Watch 712
The Storm Prediction Center issued this tornado watch at Nov 20, 2023, 3:52 PM CST for 10 parishes in Louisiana; 41 counties in Mississippi. It was in force for 9 hr.
The area
The outline as issued.
The facts
- Issued
- Nov 20, 2023, 3:52 PM CST (21:52 UTC)
- Expired
- Nov 21, 2023, 1:00 AM CST
- In force
- 9 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 1.5 in
- Strongest gust expected
- 60 kt
All 51 counties
East Baton Rouge Parish, LA, East Feliciana Parish, LA, Livingston Parish, LA, Pointe Coupee Parish, LA, Saint Helena Parish, LA, Saint Tammany Parish, LA, Tangipahoa Parish, LA, Washington Parish, LA, West Baton Rouge Parish, LA, West Feliciana Parish, LA, Adams County, MS, Amite County, MS, Attala County, MS, Choctaw County, MS, Claiborne County, MS, Clarke County, MS, Copiah County, MS, Covington County, MS, Forrest County, MS, Franklin County, MS, Hinds County, MS, Holmes County, MS, Humphreys County, MS, Issaquena County, MS, Jasper County, MS, Jefferson 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, Noxubee County, MS, Pearl River County, MS, Pike County, MS, Rankin County, MS, Scott County, MS, Sharkey County, MS, Simpson County, MS, Smith County, MS, Walthall County, MS, Warren County, MS, Wilkinson County, MS, Winston County, MS, Yazoo County, MS
The radar
The Jackson/Brandon,MS radar (KDGX), 50 km from the middle of the area, began a volume at 21:55 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
- 70%
- One or more EF2 to EF5 tornadoes
- 50%
- Ten or more severe wind reports
- 60%
- One or more gusts of 65 knots or more
- 20%
- Ten or more severe hail reports
- 30%
- One or more hailstones of 2 inches or more
- 10%
- Six or more combined severe hail and wind reports
- 80%
Warnings issued inside it
24 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Nov 20, 4:07 PM CST | Severe Thunderstorm Warning | JAN | Hinds, Issaquena, Warren | 53 min |
| Nov 20, 4:26 PM CST | Tornado Warning | JAN | Adams, Claiborne, Jefferson | 64 min |
| Nov 20, 4:56 PM CST | Severe Thunderstorm Warning | JAN | Hinds, Madison, Rankin, Warren, Yazoo | 64 min |
| Nov 20, 5:30 PM CST | Tornado Warning | JAN | Claiborne, Copiah, Franklin, Jefferson, Lincoln | 60 min |
| Nov 20, 5:38 PM CST | Tornado Warning | JAN | Madison, Rankin, Scott | 55 min |
| Nov 20, 5:55 PM CST | Flash Flood Warning | JAN | Adams, Jefferson | 2 hr |
| Nov 20, 6:18 PM CST | Severe Thunderstorm Warning | JAN | Leake | 57 min |
| Nov 20, 6:23 PM CST | Tornado Warning | JAN | Copiah, Simpson | 67 min |
| Nov 20, 6:26 PM CST | Severe Thunderstorm Warning | JAN | Copiah, Jefferson Davis, Lawrence, Lincoln, Simpson | 64 min |
| Nov 20, 6:34 PM CST | Tornado Warning | JAN | Copiah, Jefferson Davis, Lawrence, Lincoln, Simpson | 56 min |
| Nov 20, 6:36 PM CST | Tornado Warning | JAN | Leake, Neshoba | 54 min |
| Nov 20, 7:12 PM CST | Tornado Warning | JAN | Franklin, Lincoln | 63 min |
| Nov 20, 7:29 PM CST | Severe Thunderstorm Warning | JAN | Covington, Jefferson Davis, Lawrence, Simpson, Smith | 61 min |
| Nov 20, 7:35 PM CST | Tornado Warning | JAN | Adams | 36 min |
| Nov 20, 7:38 PM CST | Tornado Warning | JAN | Simpson, Smith | 55 min |
| Nov 20, 7:45 PM CST | Tornado Warning | LIX | Wilkinson | 45 min |
| Nov 20, 7:51 PM CST | Tornado Warning | JAN | Simpson, Smith | 39 min |
| Nov 20, 8:00 PM CST | Flash Flood Warning | JAN | Copiah, Simpson | 2 hr |
| Nov 20, 8:05 PM CST | Tornado Warning | JAN | Jefferson Davis, Lawrence, Lincoln | 55 min |
| Nov 20, 8:17 PM CST | Tornado Warning | JAN | Jasper, Smith | 58 min |
| Nov 20, 9:02 PM CST | Severe Thunderstorm Warning | JAN | Clarke, Lauderdale | 58 min |
| Nov 20, 9:02 PM CST | Severe Thunderstorm Warning | LIX | Amite | 43 min |
| Nov 20, 10:31 PM CST | Flash Flood Warning | LIX | Pike | 2 hr |
| Nov 21, 12:02 AM CST | Tornado Warning | JAN | Forrest, Jones | 36 min |
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, 9.9 hours before the alert went out and 41 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1399 m above ground
- 0-6 km bulk shear
- 45 kt
- 0-1 km storm-relative helicity
- 137 m²/s²
- 0-3 km storm-relative helicity
- 164 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Nov 20, 7:11 AM CST | Mesoscale Discussion | SPC | Clark, Dallas, Garland, Hempstead, Hot Spring, Howard and 9 more | 2 hr |
| Nov 20, 12:45 PM CST | Tornado Watch | SPC | Ashley, Chicot, Columbia, Lafayette, Union | 6 hr |
| Nov 20, 11:56 AM CST | Mesoscale Discussion | SPC | Allen, Beauregard, Bienville, Bossier, Caddo, Calcasieu and 15 more | 2 hr |
| Nov 20, 2:35 PM CST | Mesoscale Discussion | SPC | Allen, Beauregard, Bienville, Calcasieu, Cameron, De Soto and 11 more | 85 min |
| Nov 20, 3:14 PM CST | Mesoscale Discussion | SPC | East Baton Rouge, East Feliciana, Livingston, Pointe Coupee, Saint Helena, Tangipahoa and 3 more | 2 hr |
| Nov 20, 5:23 PM CST | Mesoscale Discussion | SPC | Allen, Avoyelles, Beauregard, Catahoula, Concordia, Evangeline and 5 more | 97 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.