Alert archive / Alabama / Mesoscale Discussions in 2014

Mesoscale Discussion 943

June 10, 20149 counties in Alabama; Escambia County, Santa Rosa County, Florida

The Storm Prediction Center issued this mesoscale discussion at Jun 10, 2014, 3:03 PM CDT for 9 counties in Alabama; Escambia County, Santa Rosa County, Florida. It was in force for 87 min.

The area

The outline as issued.

The facts

Issued: Jun 10, 2014, 3:03 PM CDT (20:03 UTC)
Expired: Jun 10, 2014, 4:30 PM CDT
In force: 87 min
Issued by: the Storm Prediction Center

Counties Baldwin County, AL, Butler County, AL, Coffee County, AL, Conecuh County, AL, Covington County, AL, Dale County, AL, Escambia County, AL, Geneva County, AL, Mobile County, AL, Escambia County, FL, Santa Rosa County, FL

The radar

The Mobile radar (KMOB), 86 km from the middle of the area, began a volume at 20:07 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

Slidell Radar S, LA (KSIL), launched 12:00Z, 8.1 hours before the alert went out and 233 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: 2484 J/kg
Mixed-layer CIN: 0 J/kg
Mixed-layer LCL: 640 m above ground
0-6 km bulk shear: 29 kt
0-1 km storm-relative helicity: 119 m²/s²
0-3 km storm-relative helicity: 165 m²/s²
Significant tornado parameter: 1.2
Supercell composite: 7.1

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

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SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 9, 8:13 PM CDT	Mesoscale Discussion	SPC	Autauga, Bibb, Blount, Calhoun, Cherokee, Chilton and 19 more	92 min
Jun 9, 8:57 PM CDT	Severe Thunderstorm Watch	SPC	DeKalb, Jackson, Madison, Marshall	7 hr
Jun 9, 10:17 PM CDT	Mesoscale Discussion	SPC	Autauga, Blount, Calhoun, Cherokee, Chilton, Clay and 15 more	88 min
Jun 10, 10:10 AM CDT	Mesoscale Discussion	SPC	Choctaw, Clarke, Dallas, Greene, Hale, Marengo and 6 more	65 min
Jun 10, 10:34 AM CDT	Mesoscale Discussion	SPC	Bibb, Blount, Cullman, DeKalb, Etowah, Hale and 12 more	116 min
Jun 10, 10:51 AM CDT	Severe Thunderstorm Watch	SPC	Autauga, Bibb, Blount, Bullock, Calhoun, Chambers and 35 more	7 hr
Jun 10, 10:58 AM CDT	Severe Thunderstorm Watch	SPC	Baldwin, Butler, Choctaw, Clarke, Conecuh, Covington and 6 more	8 hr
Jun 10, 1:26 PM CDT	Mesoscale Discussion	SPC	Baldwin, Butler, Conecuh, Covington, Crenshaw, Escambia and 2 more	94 min
Jun 10, 1:57 PM CDT	Mesoscale Discussion	SPC	Calhoun, Chambers, Cherokee, Clay, Cleburne, Coosa and 11 more	93 min
Jun 10, 3:57 PM CDT	Mesoscale Discussion	SPC	Chambers, Randolph	63 min

Nearby

Mesoscale Discussions in Alabama, 2014 Mesoscale Discussions in Florida, 2014 Every mesoscale discussion in 2014

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.