Alert archive / Ohio / Mesoscale Discussions in 2012
Mesoscale Discussion 638
The Storm Prediction Center issued this mesoscale discussion at Apr 30, 2012, 9:07 PM EDT for 58 counties in Kentucky; 59 counties in Ohio; 20 counties in West Virginia. It was in force for 53 min.
The area
The outline as issued.
The facts
- Issued
- Apr 30, 2012, 9:07 PM EDT (01:07 UTC)
- Expired
- Apr 30, 2012, 10:00 PM EDT
- In force
- 53 min
- Issued by
- the Storm Prediction Center
All 137 counties
Anderson County, KY, Bath County, KY, Boone County, KY, Bourbon County, KY, Boyd County, KY, Boyle County, KY, Bracken County, KY, Breathitt County, KY, Campbell County, KY, Carter County, KY, Casey County, KY, Clark County, KY, Clay County, KY, Elliott County, KY, Estill County, KY, Fayette County, KY, Fleming County, KY, Floyd County, KY, Franklin County, KY, Garrard County, KY, Grant County, KY, Greenup County, KY, Harrison County, KY, Jackson County, KY, Jessamine County, KY, Johnson County, KY, Kenton County, KY, Knott County, KY, Knox County, KY, Laurel County, KY, Lawrence County, KY, Lee County, KY, Leslie County, KY, Lewis County, KY, Lincoln County, KY, Madison County, KY, Magoffin County, KY, Martin County, KY, Mason County, KY, Menifee County, KY, Mercer County, KY, Montgomery County, KY, Morgan County, KY, Nicholas County, KY, Owen County, KY, Owsley County, KY, Pendleton County, KY, Perry County, KY, Powell County, KY, Pulaski County, KY, Robertson County, KY, Rockcastle County, KY, Rowan County, KY, Scott County, KY, Washington County, KY, Wayne County, KY, Wolfe County, KY, Woodford County, KY, Adams County, OH, Ashland County, OH, Athens County, OH, Belmont County, OH, Brown County, OH, Butler County, OH, Carroll County, OH, Champaign County, OH, Clark County, OH, Clermont County, OH, Clinton County, OH, Columbiana County, OH, Coshocton County, OH, Crawford County, OH, Delaware County, OH, Fairfield County, OH, Fayette County, OH, Franklin County, OH, Gallia County, OH, Greene County, OH, Guernsey County, OH, Hamilton County, OH, Hardin County, OH, Harrison County, OH, Highland County, OH, Hocking County, OH, Holmes County, OH, Jackson County, OH, Jefferson County, OH, Knox County, OH, Lawrence County, OH, Licking County, OH, Logan County, OH, Madison County, OH, Marion County, OH, Medina County, OH, Meigs County, OH, Miami County, OH, Monroe County, OH, Montgomery County, OH, Morgan County, OH, Morrow County, OH, Muskingum County, OH, Noble County, OH, Perry County, OH, Pickaway County, OH, Pike County, OH, Richland County, OH, Ross County, OH, Scioto County, OH, Shelby County, OH, Stark County, OH, Summit County, OH, Tuscarawas County, OH, Union County, OH, Vinton County, OH, Warren County, OH, Washington County, OH, Wayne County, OH, Brooke County, WV, Cabell County, WV, Calhoun County, WV, Doddridge County, WV, Gilmer County, WV, Hancock County, WV, Jackson County, WV, Lincoln County, WV, Marshall County, WV, Mason County, WV, Ohio County, WV, Pleasants County, WV, Putnam County, WV, Ritchie County, WV, Roane County, WV, Tyler County, WV, Wayne County, WV, Wetzel County, WV, Wirt County, WV, Wood County, WV
The radar
The Cincinnati radar (KILN), 120 km from the middle of the area, began a volume at 01:09 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, 1.1 hours before the alert went out and 118 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.
- Mixed-layer CAPE
- 98 J/kg
- Mixed-layer CIN
- -16 J/kg
- Mixed-layer LCL
- 1642 m above ground
- 0-6 km bulk shear
- 44 kt
- 0-1 km storm-relative helicity
- 102 m²/s²
- 0-3 km storm-relative helicity
- 94 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.6
The text
As transmitted, in the capitals the NWS used until 2016.
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</html>SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 1, 1:33 PM EDT | Mesoscale Discussion | SPC | Adair, Allen, Barren, Butler, Casey, Clinton and 17 more | 117 min |
| May 1, 2:44 PM EDT | Severe Thunderstorm Watch | SPC | Adair, Allen, Anderson, Barren, Bath, Bourbon and 59 more | 6 hr |
| May 1, 3:01 PM EDT | Tornado Watch | SPC | Boone, Bracken, Campbell, Carroll, Gallatin, Grant and 8 more | 7 hr |
| May 1, 6:13 PM EDT | Mesoscale Discussion | SPC | Boyd | 62 min |
| May 1, 6:31 PM EDT | Tornado Watch | SPC | Boone, Boyd, Bracken, Campbell, Carroll, Carter and 9 more | 5 hr |
| May 1, 2:44 PM EDT | Mesoscale Discussion | SPC | Butler, Clark, Darke, Greene, Hamilton, Miami and 3 more | 61 min |
| May 1, 12:43 PM EDT | Mesoscale Discussion | SPC | Monroe | 2 hr |
Nearby
Mesoscale Discussions in Ohio, 2012Mesoscale Discussions in Kentucky, 2012Mesoscale Discussions in West Virginia, 2012Every mesoscale discussion in 2012
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.