Alert archive / Alabama / Mesoscale Discussions in 2022

Mesoscale Discussion 320

March 23, 20225 counties in Alabama; 4 counties in Florida

The Storm Prediction Center issued this mesoscale discussion at Mar 23, 2022, 2:56 AM CDT for 5 counties in Alabama; 4 counties in Florida. It was in force for 94 min.

The area

The outline as issued.

The facts

Issued: Mar 23, 2022, 2:56 AM CDT (07:56 UTC)
Expired: Mar 23, 2022, 4:30 AM CDT
In force: 94 min
Issued by: the Storm Prediction Center
Concerning: Tornado watch 65

Counties Coffee County, AL, Covington County, AL, Dale County, AL, Geneva County, AL, Houston County, AL, Holmes County, FL, Okaloosa County, FL, Walton County, FL, Washington County, FL

The radar

The Eglin Afb radar (KEVX), 37 km from the middle of the area, began a volume at 07:59 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 nearest sounding before it

Birmingham, AL (KBMX), launched 00:00Z, 7.9 hours before the alert went out and 265 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: 573 J/kg
Mixed-layer CIN: -31 J/kg
Mixed-layer LCL: 1220 m above ground
0-6 km bulk shear: 68 kt
0-1 km storm-relative helicity: 305 m²/s²
0-3 km storm-relative helicity: 571 m²/s²
Significant tornado parameter: 1.4
Supercell composite: 9.4

Open this sounding in Storm Lab

The text

As transmitted.

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SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Mar 22, 7:00 PM CDT	Tornado Watch	SPC	Choctaw, Clarke, Greene, Hale, Marengo, Sumter and 3 more	4 hr
Mar 22, 9:40 PM CDT	Mesoscale Discussion	SPC	Autauga, Baldwin, Bibb, Bullock, Butler, Chilton and 30 more	2 hr
Mar 22, 10:45 PM CDT	Tornado Watch	SPC	Autauga, Baldwin, Barbour, Bullock, Butler, Chambers and 29 more	7 hr
Mar 23, 1:00 AM CDT	Mesoscale Discussion	SPC	Autauga, Baldwin, Bullock, Butler, Chilton, Clay and 16 more	2 hr
Mar 23, 4:32 AM CDT	Mesoscale Discussion	SPC	Geneva, Henry, Houston	88 min
Mar 23, 12:36 PM CDT	Mesoscale Discussion	SPC	Alachua, Baker, Bradford, Clay, Columbia, Dixie and 7 more	2 hr
Mar 23, 2:13 PM CDT	Tornado Watch	SPC	Baker, Duval, Nassau	3 hr
Mar 23, 4:50 PM CDT	Mesoscale Discussion	SPC	Duval, Nassau	55 min

Nearby

Mesoscale Discussions in Alabama, 2022 Mesoscale Discussions in Florida, 2022 Every mesoscale discussion 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; radar from the NEXRAD Level II archive.