Alert archive / Alabama / Mesoscale Discussions in 2019

Mesoscale Discussion 1011

June 6, 201915 counties in Alabama; Lowndes County, Noxubee County, Mississippi

The Storm Prediction Center issued this mesoscale discussion at Jun 6, 2019, 8:06 PM CDT for 15 counties in Alabama; Lowndes County, Noxubee County, Mississippi. It was in force for 54 min.

The area

The outline as issued.

The facts

Issued: Jun 6, 2019, 8:06 PM CDT (01:06 UTC)
Expired: Jun 6, 2019, 9:00 PM CDT
In force: 54 min
Issued by: the Storm Prediction Center
Chance of a watch: 20%

Counties Autauga County, AL, Bibb County, AL, Chilton County, AL, Dallas County, AL, Elmore County, AL, Greene County, AL, Hale County, AL, Lowndes County, AL, Marengo County, AL, Montgomery County, AL, Perry County, AL, Pickens County, AL, Sumter County, AL, Tuscaloosa County, AL, Wilcox County, AL, Lowndes County, MS, Noxubee County, MS

The radar

The Birmingham radar (KBMX), 83 km from the middle of the area, began a volume at 01:07 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.

The nearest sounding before it

Birmingham, AL (KBMX), launched 00:00Z, 1.1 hours before the alert went out and 83 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: 71 J/kg
Mixed-layer CIN: -8 J/kg
Mixed-layer LCL: 704 m above ground
0-6 km bulk shear: 25 kt
0-1 km storm-relative helicity: 133 m²/s²
0-3 km storm-relative helicity: 234 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

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
Jun 7, 8:51 AM CDT	Mesoscale Discussion	SPC	Butler, Choctaw, Clarke, Dallas, Lowndes, Marengo and 3 more	84 min
Jun 7, 11:58 AM CDT	Mesoscale Discussion	SPC	Autauga, Barbour, Bibb, Bullock, Butler, Chambers and 21 more	2 hr
Jun 7, 1:08 PM CDT	Severe Thunderstorm Watch	SPC	Barbour, Bullock, Chambers, Clay, Elmore, Lee and 5 more	5 hr
Jun 7, 4:35 PM CDT	Mesoscale Discussion	SPC	Bibb, Choctaw, Clarke, Fayette, Franklin, Greene and 16 more	85 min

Nearby

Mesoscale Discussions in Alabama, 2019 Mesoscale Discussions in Mississippi, 2019 Every mesoscale discussion in 2019

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.