Alert archive / Mississippi / Mesoscale Discussions in 2024

Mesoscale Discussion 91

January 25, 20246 counties in Alabama; 11 counties in Mississippi

The Storm Prediction Center issued this mesoscale discussion at Jan 25, 2024, 10:22 AM CST for 6 counties in Alabama; 11 counties in Mississippi. It was in force for 113 min.

The area

The outline as issued.

The facts

Issued: Jan 25, 2024, 10:22 AM CST (16:22 UTC)
Expired: Jan 25, 2024, 12:15 PM CST
In force: 113 min
Issued by: the Storm Prediction Center
Concerning: Severe potential...watch possible
Chance of a watch: 40%

Counties Choctaw County, AL, Greene County, AL, Hale County, AL, Marengo County, AL, Sumter County, AL, Washington County, AL, Clarke County, MS, Forrest County, MS, George County, MS, Greene County, MS, Harrison County, MS, Jones County, MS, Kemper County, MS, Lauderdale County, MS, Perry County, MS, Stone County, MS, Wayne County, MS

The radar

The Mobile radar (KMOB), 118 km from the middle of the area, began a volume at 16:22 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 watches that followed

Watches SPC issued over any of the same counties within four hours of this discussion.

Severe Thunderstorm Watch 11Jan 25, 10:55 AM CST

The nearest sounding before it

Jackson, MS (KJAN), launched 12:00Z, 4.4 hours before the alert went out and 146 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: 2 J/kg
Mixed-layer CIN: -134 J/kg
Mixed-layer LCL: 569 m above ground
0-6 km bulk shear: 63 kt
0-1 km storm-relative helicity: 205 m²/s²
0-3 km storm-relative helicity: 316 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.4

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
Jan 25, 10:54 AM CST	Severe Thunderstorm Watch	SPC	Choctaw, Clarke, Dallas, Marengo, Monroe, Sumter and 2 more	4 hr
Jan 25, 1:34 PM CST	Mesoscale Discussion	SPC	Autauga, Barbour, Bullock, Butler, Chambers, Chilton and 21 more	116 min

Nearby

Mesoscale Discussions in Mississippi, 2024 Mesoscale Discussions in Alabama, 2024 Every mesoscale discussion 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.