Alert archive / Alabama / Mesoscale Discussions in 2025

Mesoscale Discussion 1015

May 27, 20257 counties in Alabama; Escambia County, Santa Rosa County, Florida; 4 counties in Mississippi

The Storm Prediction Center issued this mesoscale discussion at May 27, 2025, 7:35 PM CDT for 7 counties in Alabama; Escambia County, Santa Rosa County, Florida; 4 counties in Mississippi. It was in force for 85 min.

The area

The outline as issued.

The facts

Issued: May 27, 2025, 7:35 PM CDT (00:35 UTC)
Expired: May 27, 2025, 9:00 PM CDT
In force: 85 min
Issued by: the Storm Prediction Center
Concerning: Severe thunderstorm watch 339

Counties Baldwin County, AL, Clarke County, AL, Conecuh County, AL, Escambia County, AL, Mobile County, AL, Monroe County, AL, Washington County, AL, Escambia County, FL, Santa Rosa County, FL, George County, MS, Greene County, MS, Jackson County, MS, Stone County, MS

The radar

The Mobile radar (KMOB), 78 km from the middle of the area, began a volume at 00:34 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

Slidell Radar S, LA (KSIL), launched 00:00Z, 0.6 hours before the alert went out and 216 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: 1740 J/kg
Mixed-layer CIN: -10 J/kg
Mixed-layer LCL: 1167 m above ground
0-6 km bulk shear: 27 kt
0-1 km storm-relative helicity: 75 m²/s²
0-3 km storm-relative helicity: 162 m²/s²
Significant tornado parameter: 0.5
Supercell composite: 5.1

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
May 27, 9:21 PM CDT	Mesoscale Discussion	SPC	Bullock, Butler, Crenshaw, Lowndes, Montgomery, Pike	54 min
May 28, 5:53 PM CDT	Mesoscale Discussion	SPC	Choctaw, Clarke, Washington	2 hr
May 28, 1:07 PM CDT	Mesoscale Discussion	SPC	Adams, Amite, Claiborne, Copiah, Covington, Forrest and 23 more	83 min
May 28, 3:19 PM CDT	Severe Thunderstorm Watch	SPC	Adams, Amite, Clarke, Copiah, Covington, Forrest and 23 more	5 hr

Nearby

Mesoscale Discussions in Alabama, 2025 Mesoscale Discussions in Mississippi, 2025 Mesoscale Discussions in Florida, 2025 Every mesoscale discussion in 2025

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.