Alert archive / Ohio / Mesoscale Discussions in 2017

Mesoscale Discussion 1392

July 22, 20176 counties in Indiana; 8 counties in Ohio

The Storm Prediction Center issued this mesoscale discussion at Jul 22, 2017, 5:00 AM EDT for 6 counties in Indiana; 8 counties in Ohio. It was in force for 90 min.

The area

The outline as issued.

The facts

Issued: Jul 22, 2017, 5:00 AM EDT (09:00 UTC)
Expired: Jul 22, 2017, 6:30 AM EDT
In force: 90 min
Issued by: the Storm Prediction Center

Counties Fayette County, IN, Franklin County, IN, Randolph County, IN, Rush County, IN, Union County, IN, Wayne County, IN, Butler County, OH, Darke County, OH, Greene County, OH, Hamilton County, OH, Miami County, OH, Montgomery County, OH, Preble County, OH, Warren County, OH

The radar

The Cincinnati radar (KILN), 82 km from the middle of the area, began a volume at 09:03 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

Cncnati-Daytn, OH (KILN), launched 00:00Z, 9.0 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: 111 J/kg
Mixed-layer CIN: -126 J/kg
Mixed-layer LCL: 1423 m above ground
0-6 km bulk shear: 24 kt
0-1 km storm-relative helicity: 32 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
Jul 21, 9:35 PM EDT	Mesoscale Discussion	SPC	Cass, Fulton, Jasper, Lake, LaPorte, Marshall and 6 more	115 min
Jul 22, 12:23 AM EDT	Mesoscale Discussion	SPC	Cass, Fulton, Jasper, Lake, LaPorte, Marshall and 6 more	67 min
Jul 22, 1:53 AM EDT	Mesoscale Discussion	SPC	Boone, Carroll, Cass, Clinton, Delaware, Fayette and 14 more	67 min
Jul 22, 2:08 AM EDT	Severe Thunderstorm Watch	SPC	Adams, Blackford, Boone, Carroll, Cass, Clinton and 31 more	4 hr
Jul 22, 8:34 AM EDT	Mesoscale Discussion	SPC	Belmont, Carroll, Columbiana, Harrison, Jefferson, Monroe and 2 more	86 min
Jul 22, 3:18 PM EDT	Mesoscale Discussion	SPC	Adams, Athens, Clinton, Fairfield, Fayette, Gallia and 17 more	2 hr
Jul 22, 3:54 PM EDT	Severe Thunderstorm Watch	SPC	Athens, Fairfield, Fayette, Franklin, Gallia, Hocking and 11 more	6 hr
Jul 22, 7:37 PM EDT	Mesoscale Discussion	SPC	Adams, Athens, Gallia, Highland, Jackson, Lawrence and 5 more	83 min

Nearby

Mesoscale Discussions in Ohio, 2017 Mesoscale Discussions in Indiana, 2017 Every mesoscale discussion in 2017

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.