Alert archive / Mississippi / Tornado Watches in 2024

Tornado Watch 101

April 10, 202423 parishes in Louisiana; 45 counties in Mississippi

The Storm Prediction Center issued this tornado watch at Apr 10, 2024, 6:06 AM CDT for 23 parishes in Louisiana; 45 counties in Mississippi. It was in force for 9 hr.

The area

The outline as issued.

The facts

Issued: Apr 10, 2024, 6:06 AM CDT (11:06 UTC)
Expired: Apr 10, 2024, 3:24 PM CDT
In force: 9 hr
Issued by: the Storm Prediction Center
Largest hail expected: 1.5 in
Strongest gust expected: 70 kt

All 68 counties

Ascension Parish, LA, Assumption Parish, LA, Concordia Parish, LA, East Baton Rouge Parish, LA, East Feliciana Parish, LA, Iberville Parish, LA, Jefferson Parish, LA, Lafourche Parish, LA, Livingston Parish, LA, Orleans Parish, LA, Plaquemines Parish, LA, Pointe Coupee Parish, LA, Saint Bernard Parish, LA, Saint Charles Parish, LA, Saint Helena Parish, LA, Saint James Parish, LA, Saint John the Baptist Parish, LA, Saint Tammany Parish, LA, Tangipahoa Parish, LA, Terrebonne 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, Clarke County, MS, Clay County, MS, Copiah County, MS, Covington County, MS, Forrest County, MS, Franklin County, MS, George County, MS, Greene County, MS, Hancock County, MS, Harrison County, MS, Hinds County, MS, Jackson 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, Lowndes County, MS, Madison County, MS, Marion County, MS, Neshoba County, MS, Newton County, MS, Noxubee County, MS, Oktibbeha County, MS, Pearl River County, MS, Perry County, MS, Pike County, MS, Rankin County, MS, Scott County, MS, Simpson County, MS, Smith County, MS, Stone County, MS, Walthall County, MS, Wayne County, MS, Wilkinson County, MS, Winston County, MS

The radar

The Jackson/Brandon,MS radar (KDGX), 80 km from the middle of the area, began a volume at 11:07 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: 80%
One or more gusts of 65 knots or more: 70%
Ten or more severe hail reports: 40%
One or more hailstones of 2 inches or more: 20%
Six or more combined severe hail and wind reports: 95%

Warnings issued inside it

50 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

Issued	Product	Office	Counties	Lasted
Apr 10, 6:23 AM CDT	Severe Thunderstorm Warning	LIX	Ascension, Livingston, Saint James, Saint John the Baptist	67 min
Apr 10, 6:44 AM CDT	Severe Thunderstorm Warning	LIX	Iberville, Pointe Coupee, West Baton Rouge	46 min
Apr 10, 6:55 AM CDT	Tornado Warning	LIX	Iberville, Pointe Coupee, West Baton Rouge	25 min
Apr 10, 7:17 AM CDT	Severe Thunderstorm Warning	LIX	Lafourche, Saint James, Saint John the Baptist	43 min
Apr 10, 7:32 AM CDT	Flash Flood Warning	LIX	Jefferson, Orleans, Plaquemines, Saint Bernard	4 hr
Apr 10, 7:45 AM CDT	Severe Thunderstorm Warning Considerable damage threat	LIX	East Baton Rouge, East Feliciana, Iberville, Pointe Coupee, West Baton Rouge, West Feliciana	60 min
Apr 10, 7:50 AM CDT	Severe Thunderstorm Warning	LIX	Jefferson, Lafourche, Saint Charles	40 min
Apr 10, 8:02 AM CDT	Severe Thunderstorm Warning	LIX	Ascension, Assumption, Lafourche, Livingston, Saint Charles, Saint James and 1 more	43 min
Apr 10, 8:04 AM CDT	Flash Flood Warning	JAN	Attala, Carroll, Choctaw, Clay, Grenada, Holmes and 4 more	8 hr
Apr 10, 8:06 AM CDT	Tornado Warning Considerable damage threat	LIX	East Feliciana, Pointe Coupee, West Feliciana	24 min
Apr 10, 8:24 AM CDT	Severe Thunderstorm Warning	LIX	Jefferson, Orleans, Plaquemines, Saint Bernard, Saint Charles	66 min
Apr 10, 8:30 AM CDT	Severe Thunderstorm Warning Considerable damage threat	LIX	Amite, Wilkinson	45 min
Apr 10, 8:35 AM CDT	Severe Thunderstorm Warning Destructive damage threat	LIX	Livingston, Saint Helena, Tangipahoa, Washington	55 min
Apr 10, 8:41 AM CDT	Flash Flood Warning	LIX	Ascension, Livingston, Saint Charles, Saint James, Saint John the Baptist	3 hr
Apr 10, 8:41 AM CDT	Tornado Warning	LIX	Saint Tammany	28 min
Apr 10, 8:54 AM CDT	Flash Flood Warning	LIX	East Baton Rouge, East Feliciana, Pointe Coupee, West Baton Rouge, West Feliciana	3 hr
Apr 10, 9:00 AM CDT	Flash Flood Warning	LIX	Saint Tammany	3 hr
Apr 10, 9:00 AM CDT	Severe Thunderstorm Warning	JAN	Franklin, Lawrence, Lincoln	60 min
Apr 10, 9:05 AM CDT	Severe Thunderstorm Warning	LIX	Ascension, Assumption, Lafourche, Livingston, Saint Charles, Saint James and 1 more	55 min
Apr 10, 9:14 AM CDT	Flash Flood Warning Emergency	LIX	Tangipahoa	5 hr
Apr 10, 9:20 AM CDT	Severe Thunderstorm Warning	LIX	Tangipahoa, Washington	55 min
Apr 10, 9:23 AM CDT	Severe Thunderstorm Warning Considerable damage threat	LIX	Orleans, Saint Tammany, Tangipahoa, Washington	82 min
Apr 10, 9:26 AM CDT	Flash Flood Warning	LIX	Saint Tammany	3 hr
Apr 10, 9:27 AM CDT	Severe Thunderstorm Warning	JAN	Jefferson Davis, Marion	49 min
Apr 10, 9:40 AM CDT	Flash Flood Warning Considerable damage threat	LIX	Ascension, Assumption, East Baton Rouge, Iberville, Livingston, Saint James	3 hr
Apr 10, 9:52 AM CDT	Severe Thunderstorm Warning	JAN	Simpson, Smith	53 min
Apr 10, 9:53 AM CDT	Tornado Warning	LIX	Saint Tammany	52 min
Apr 10, 9:56 AM CDT	Severe Thunderstorm Warning	JAN	Covington, Forrest, Jones, Lamar	64 min
Apr 10, 9:59 AM CDT	Severe Thunderstorm Warning Destructive damage threat	LIX	Jefferson, Orleans, Plaquemines, Saint Bernard, Saint Charles, Saint Tammany	46 min
Apr 10, 10:08 AM CDT	Tornado Warning	LIX	Saint Tammany	52 min
Apr 10, 10:08 AM CDT	Flash Flood Warning	JAN	Forrest, Lamar, Marion	5 hr
Apr 10, 10:27 AM CDT	Tornado Warning Tornado observed	LIX	Hancock, Harrison	33 min
Apr 10, 10:31 AM CDT	Severe Thunderstorm Warning Considerable damage threat	LIX	Orleans, Saint Tammany	59 min
Apr 10, 10:33 AM CDT	Severe Thunderstorm Warning Considerable damage threat	MOB	George, Greene, Perry, Stone, Wayne	57 min
Apr 10, 10:42 AM CDT	Flash Flood Warning	LIX	Jefferson, Lafourche, Saint Charles, Saint John the Baptist	3 hr
Apr 10, 10:47 AM CDT	Severe Thunderstorm Warning	JAN	Jasper, Jones	43 min
Apr 10, 10:54 AM CDT	Flash Flood Warning	JAN	Hinds, Madison, Rankin	3 hr
Apr 10, 10:55 AM CDT	Flash Flood Warning EmergencyCatastrophic damage threat	LIX	Jefferson, Orleans, Saint Bernard	3 hr
Apr 10, 10:56 AM CDT	Tornado Warning	LIX	Harrison, Jackson	49 min
Apr 10, 11:06 AM CDT	Flash Flood Warning	LIX	Saint Tammany	3 hr
Apr 10, 11:13 AM CDT	Severe Thunderstorm Warning Considerable damage threat	LIX	Jackson	47 min
Apr 10, 11:20 AM CDT	Flash Flood Warning	LIX	Hancock, Pearl River	3 hr
Apr 10, 11:23 AM CDT	Severe Thunderstorm Warning Considerable damage threat	MOB	George, Greene	52 min
Apr 10, 11:29 AM CDT	Flash Flood Warning	LIX	Harrison, Jackson	6 hr
Apr 10, 11:54 AM CDT	Flash Flood Warning Considerable damage threat	LIX	Jefferson, Orleans	6 hr
Apr 10, 12:05 PM CDT	Flash Flood Warning	LIX	Saint Tammany, Tangipahoa	3 hr
Apr 10, 12:12 PM CDT	Flash Flood Warning Considerable damage threat	LIX	Ascension, Livingston, Saint Charles, Saint James, Saint John the Baptist	114 min
Apr 10, 12:15 PM CDT	Flash Flood Warning	MOB	George, Greene, Perry, Stone	3 hr
Apr 10, 12:45 PM CDT	Flash Flood Warning EmergencyCatastrophic damage threat	LIX	Jefferson, Orleans, Plaquemines, Saint Bernard, Saint Charles	2 hr
Apr 10, 12:48 PM CDT	Flash Flood Warning Considerable damage threat	LIX	Saint Tammany	110 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 00:00Z, 11.1 hours before the alert went out and 88 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 191 J/kg
Mixed-layer CIN: -44 J/kg
Mixed-layer LCL: 588 m above ground
0-6 km bulk shear: 61 kt
0-1 km storm-relative helicity: 193 m²/s²
0-3 km storm-relative helicity: 309 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 0.9

Open this sounding in Storm Lab

The text

As transmitted.

420 
WWUS20 KWNS 101103
SEL1  
SPC WW 101103
LAZ000-MSZ000-CWZ000-101800-

URGENT - IMMEDIATE BROADCAST REQUESTED
Tornado Watch Number 101
NWS Storm Prediction Center Norman OK
600 AM CDT Wed Apr 10 2024

The NWS Storm Prediction Center has issued a

* Tornado Watch for portions of 
  Southeast Louisiana
  Central and Southern Mississippi
  Coastal Waters

* Effective this Wednesday morning and afternoon from 600 AM
  until 100 PM CDT.

* Primary threats include...
  A few tornadoes likely with a couple intense tornadoes possible
  Widespread damaging winds and isolated significant gusts to 80
    mph likely
  Scattered large hail events to 1.5 inches in diameter possible

SUMMARY...A destabilizing airmass across the central Gulf Coast will
support an increasing severe thunderstorm and tornado risk this
morning into the midday.  The tornado risk will likely maximize with
any supercells that develop within the warm sector as the marine
warm front advances northward.  A squall line will move west to east
across the area with a risk for damaging gusts and the tornado risk
will likely focus with any sustained mesovortex or embedded
supercell.

The tornado watch area is approximately along and 85 statute miles
east and west of a line from 95 miles northwest of Meridian MS to 45
miles west southwest of Boothville LA. For a complete depiction of
the watch see the associated watch outline update (WOUS64 KWNS
WOU1).

PRECAUTIONARY/PREPAREDNESS ACTIONS...

REMEMBER...A Tornado Watch means conditions are favorable for
tornadoes and severe thunderstorms in and close to the watch
area. Persons in these areas should be on the lookout for
threatening weather conditions and listen for later statements
and possible warnings.

&&

OTHER WATCH INFORMATION...CONTINUE...WW 99...WW 100...

AVIATION...Tornadoes and a few severe thunderstorms with hail
surface and aloft to 1.5 inches. Extreme turbulence and surface wind
gusts to 70 knots. A few cumulonimbi with maximum tops to 500. Mean
storm motion vector 25040.

...Smith

SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 9, 7:32 PM CDT	Mesoscale Discussion	SPC	Allen, Beauregard, Calcasieu, Vernon	88 min
Apr 9, 7:49 PM CDT	Mesoscale Discussion	SPC	Tensas	86 min
Apr 10, 3:21 AM CDT	Mesoscale Discussion	SPC	Acadia, Allen, Beauregard, Calcasieu, Cameron, Evangeline and 2 more	114 min
Apr 10, 3:47 AM CDT	Tornado Watch	SPC	Acadia, Allen, Avoyelles, Beauregard, Calcasieu, Cameron and 10 more	5 hr
Apr 10, 5:35 AM CDT	Mesoscale Discussion	SPC	Acadia, Allen, Ascension, Assumption, Avoyelles, Beauregard and 26 more	115 min
Apr 10, 7:16 AM CDT	Mesoscale Discussion	SPC	Acadia, Allen, Ascension, Assumption, Avoyelles, Cameron and 22 more	89 min
Apr 10, 9:01 AM CDT	Mesoscale Discussion	SPC	Ascension, Assumption, East Baton Rouge, East Feliciana, Iberville, Livingston and 13 more	89 min
Apr 10, 11:01 AM CDT	Mesoscale Discussion	SPC	Orleans, Saint Bernard	89 min
Apr 10, 5:01 AM CDT	Mesoscale Discussion	SPC	Attala, Choctaw, Copiah, Covington, Franklin, Jefferson Davis and 14 more	119 min

Nearby

Tornado Watches in Mississippi, 2024 Tornado Watches in Louisiana, 2024 Every tornado watch in 2024

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.