Alert archive / Alabama / Mesoscale Discussions in 2016

Mesoscale Discussion 966

June 17, 201616 counties in Alabama; 13 counties in Mississippi

The Storm Prediction Center issued this mesoscale discussion at Jun 17, 2016, 3:12 PM CDT for 16 counties in Alabama; 13 counties in Mississippi. It was in force for 93 min.

The area

The outline as issued.

The facts

Issued: Jun 17, 2016, 3:12 PM CDT (20:12 UTC)
Expired: Jun 17, 2016, 4:45 PM CDT
In force: 93 min
Issued by: the Storm Prediction Center

All 29 counties

Autauga County, AL, Bibb County, AL, Chilton County, AL, Choctaw County, AL, Clarke County, AL, Dallas County, AL, Greene County, AL, Hale County, AL, Lowndes County, AL, Marengo County, AL, Monroe County, AL, Perry County, AL, Pickens County, AL, Sumter County, AL, Tuscaloosa County, AL, Wilcox County, AL, Attala County, MS, Choctaw County, MS, Clarke County, MS, Jasper County, MS, Kemper County, MS, Lauderdale County, MS, Leake County, MS, Neshoba County, MS, Newton County, MS, Noxubee County, MS, Scott County, MS, Smith County, MS, Winston County, MS

The radar

The Birmingham radar (KBMX), 147 km from the middle of the area, began a volume at 20:15 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 12:00Z, 8.2 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: 2424 J/kg
Mixed-layer CIN: -74 J/kg
Mixed-layer LCL: 849 m above ground
0-6 km bulk shear: 18 kt
0-1 km storm-relative helicity: 34 m²/s²
0-3 km storm-relative helicity: 41 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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 17, 11:34 AM CDT	Mesoscale Discussion	SPC	Autauga, Barbour, Bibb, Blount, Bullock, Butler and 38 more	116 min
Jun 17, 12:37 PM CDT	Severe Thunderstorm Watch	SPC	Autauga, Baldwin, Barbour, Bibb, Blount, Bullock and 53 more	8 hr
Jun 17, 6:15 PM CDT	Mesoscale Discussion	SPC	Baldwin, Barbour, Bullock, Butler, Clarke, Coffee and 12 more	60 min
Jun 17, 1:30 PM CDT	Mesoscale Discussion	SPC	Bolivar, Washington	2 hr

Nearby

Mesoscale Discussions in Alabama, 2016 Mesoscale Discussions in Mississippi, 2016 Every mesoscale discussion in 2016

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.