Alert archive / Mississippi / Tornado Watches in 2022

Tornado Watch 50

March 18, 20224 counties in Alabama; Saint Tammany Parish, Washington Parish, Louisiana; 22 counties in Mississippi

The Storm Prediction Center issued this tornado watch at Mar 18, 2022, 3:55 AM CDT for 4 counties in Alabama; Saint Tammany Parish, Washington Parish, Louisiana; 22 counties in Mississippi. It was in force for 8 hr.

The area

The outline as issued.

The facts

Issued: Mar 18, 2022, 3:55 AM CDT (08:55 UTC)
Expired: Mar 18, 2022, 12:00 PM CDT
In force: 8 hr
Issued by: the Storm Prediction Center
Largest hail expected: 1.5 in
Strongest gust expected: 60 kt

All 28 counties

Choctaw County, AL, Clarke County, AL, Mobile County, AL, Washington County, AL, Saint Tammany Parish, LA, Washington Parish, LA, Clarke County, MS, Covington County, MS, Forrest County, MS, George County, MS, Greene County, MS, Hancock County, MS, Harrison County, MS, Jackson County, MS, Jasper County, MS, Jefferson Davis County, MS, Jones County, MS, Lamar County, MS, Lawrence County, MS, Lincoln County, MS, Marion County, MS, Pearl River County, MS, Perry County, MS, Simpson County, MS, Smith County, MS, Stone County, MS, Walthall County, MS, Wayne County, MS

What SPC expected

The probabilities SPC published with the watch, for the watch area over its life.

Two or more tornadoes: 40%
One or more EF2 to EF5 tornadoes: 30%
Ten or more severe wind reports: 40%
One or more gusts of 65 knots or more: 20%
Ten or more severe hail reports: 10%
One or more hailstones of 2 inches or more: 10%
Six or more combined severe hail and wind reports: 60%

Warnings issued inside it

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

Issued	Product	Office	Counties	Lasted
Mar 18, 4:20 AM CDT	Severe Thunderstorm Warning	JAN	Covington, Jasper, Jefferson Davis, Jones, Lawrence, Simpson and 1 more	55 min
Mar 18, 5:05 AM CDT	Severe Thunderstorm Warning	LIX	Saint Helena, Tangipahoa, Washington	25 min
Mar 18, 5:07 AM CDT	Severe Thunderstorm Warning	JAN	Clarke, Jasper, Jones	59 min
Mar 18, 5:24 AM CDT	Severe Thunderstorm Warning	MOB	Choctaw, Washington	66 min
Mar 18, 5:55 AM CDT	Flash Flood Warning	JAN	Covington, Jones	2 hr
Mar 18, 6:07 AM CDT	Flash Flood Warning	JAN	Marion	115 min
Mar 18, 6:18 AM CDT	Severe Thunderstorm Warning Considerable damage threat	MOB	Clarke, Wilcox	42 min
Mar 18, 6:39 AM CDT	Flash Flood Warning	MOB	Wayne	6 hr
Mar 18, 6:40 AM CDT	Flash Flood Warning	JAN	Forrest, Lamar	2 hr
Mar 18, 6:57 AM CDT	Severe Thunderstorm Warning	MOB	Clarke, Wilcox	63 min
Mar 18, 7:45 AM CDT	Severe Thunderstorm Warning Considerable damage threat	MOB	Mobile	45 min
Mar 18, 7:49 AM CDT	Tornado Warning	MOB	Greene, Perry, Wayne	11 min
Mar 18, 8:03 AM CDT	Severe Thunderstorm Warning	MOB	Clarke, Washington	42 min
Mar 18, 8:09 AM CDT	Severe Thunderstorm Warning	MOB	Clarke, Conecuh, Monroe, Wilcox	66 min
Mar 18, 8:32 AM CDT	Severe Thunderstorm Warning	MOB	Baldwin, Mobile	43 min
Mar 18, 8:34 AM CDT	Severe Thunderstorm Warning	LIX	Pearl River	26 min
Mar 18, 9:06 AM CDT	Severe Thunderstorm Warning	MOB	Greene, Perry	39 min
Mar 18, 9:15 AM CDT	Tornado Warning	LIX	Pearl River	12 min
Mar 18, 9:23 AM CDT	Severe Thunderstorm Warning	MOB	George, Greene, Perry, Stone	52 min
Mar 18, 9:43 AM CDT	Severe Thunderstorm Warning	MOB	Washington	47 min
Mar 18, 9:50 AM CDT	Severe Thunderstorm Warning	MOB	Mobile	40 min
Mar 18, 11:06 AM CDT	Severe Thunderstorm Warning	MOB	Baldwin, Clarke, Conecuh, Escambia, Mobile, Monroe and 1 more	16 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

Slidell Radar S, LA (KSIL), launched 00:00Z, 8.9 hours before the alert went out and 115 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1124 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: 59 m²/s²
0-3 km storm-relative helicity: 152 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Mar 18, 3:12 AM CDT	Mesoscale Discussion	SPC	Choctaw, Washington	2 hr
Mar 18, 5:48 AM CDT	Mesoscale Discussion	SPC	Choctaw, Clarke, Marengo, Monroe, Washington, Wilcox	87 min
Mar 18, 7:16 AM CDT	Mesoscale Discussion	SPC	Baldwin, Butler, Clarke, Coffee, Conecuh, Covington and 7 more	89 min
Mar 18, 7:33 AM CDT	Tornado Watch	SPC	Baldwin, Butler, Conecuh, Covington, Crenshaw, Escambia and 2 more	8 hr
Mar 18, 9:13 AM CDT	Mesoscale Discussion	SPC	Coffee, Conecuh, Covington, Escambia	2 hr
Mar 18, 10:34 AM CDT	Mesoscale Discussion	SPC	Coffee, Dale, Geneva, Henry, Houston	86 min
Mar 18, 10:53 AM CDT	Tornado Watch	SPC	Coffee, Dale, Geneva, Henry, Houston	8 hr
Mar 17, 8:30 PM CDT	Mesoscale Discussion	SPC	Bienville, Bossier, Caddo, Claiborne, De Soto, Lincoln and 4 more	2 hr
Mar 17, 10:47 PM CDT	Mesoscale Discussion	SPC	Acadia, Allen, Ascension, Assumption, Avoyelles, Beauregard and 19 more	3 hr
Mar 17, 11:42 PM CDT	Tornado Watch	SPC	Acadia, Allen, Ascension, Assumption, Avoyelles, Beauregard and 23 more	7 hr
Mar 18, 1:40 AM CDT	Mesoscale Discussion	SPC	East Baton Rouge, Evangeline, Pointe Coupee, Saint Landry, West Baton Rouge, West Feliciana	95 min

Nearby

Tornado Watches in Mississippi, 2022 Tornado Watches in Alabama, 2022 Tornado Watches in Louisiana, 2022 Every tornado watch in 2022

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.