Alert archive / Kentucky / Mesoscale Discussions in 2005

Mesoscale Discussion 657

April 22, 20059 counties in Indiana; 53 counties in Kentucky; 26 counties in Ohio

The Storm Prediction Center issued this mesoscale discussion at Apr 22, 2005, 4:17 PM EDT for 9 counties in Indiana; 53 counties in Kentucky; 26 counties in Ohio. It was in force for 88 min.

The area

The outline as issued.

The facts

Issued
Apr 22, 2005, 4:17 PM EDT (20:17 UTC)
Expired
Apr 22, 2005, 5:45 PM EDT
In force
88 min
Issued by
the Storm Prediction Center
All 88 counties

Dearborn County, IN, Fayette County, IN, Franklin County, IN, Jay County, IN, Ohio County, IN, Randolph County, IN, Switzerland County, IN, Union County, IN, Wayne County, IN, Anderson County, KY, Bath County, KY, Boone County, KY, Bourbon County, KY, Boyle County, KY, Bracken County, KY, Breathitt County, KY, Campbell County, KY, Carroll County, KY, Carter County, KY, Clark County, KY, Clay County, KY, Elliott County, KY, Estill County, KY, Fayette County, KY, Fleming County, KY, Franklin County, KY, Gallatin County, KY, Garrard County, KY, Grant County, KY, Greenup County, KY, Harrison County, KY, Henry County, KY, Jackson County, KY, Jessamine County, KY, Johnson County, KY, Kenton County, KY, Knox County, KY, Laurel County, KY, Lee County, KY, Lewis County, KY, Lincoln County, KY, Madison County, KY, Magoffin County, KY, Mason County, KY, McCreary 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, Powell County, KY, Pulaski County, KY, Robertson County, KY, Rockcastle County, KY, Rowan County, KY, Scott County, KY, Whitley County, KY, Wolfe County, KY, Woodford County, KY, Adams County, OH, Auglaize County, OH, Brown County, OH, Butler County, OH, Champaign County, OH, Clark County, OH, Clermont County, OH, Clinton County, OH, Darke County, OH, Fayette County, OH, Greene County, OH, Hamilton County, OH, Highland County, OH, Logan County, OH, Madison County, OH, Mercer County, OH, Miami County, OH, Montgomery County, OH, Pickaway County, OH, Pike County, OH, Preble County, OH, Ross County, OH, Scioto County, OH, Shelby County, OH, Union County, OH, Warren County, OH

The radar

The Cincinnati radar (KILN), 47 km from the middle of the area, began a volume at 20:21 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 watches that followed

Watches SPC issued over any of the same counties within four hours of this discussion.

The nearest sounding before it

Cncnati-Daytn, OH (KILN), launched 12:00Z, 8.3 hours before the alert went out and 49 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-pSkew-T log-p diagram, Cncnati-Daytn, OH at 12:00Z on 2005-04-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCLEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Cncnati-Daytn, OH at 12:00Z on 2005-04-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 90 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
471 m above ground
0-6 km bulk shear
40 kt
0-1 km storm-relative helicity
90 m²/s²
0-3 km storm-relative helicity
59 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

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.

IssuedProductOfficeCountiesLasted
Apr 22, 4:09 AM EDTMesoscale DiscussionSPCGibson, Posey, Vanderburgh66 min
Apr 22, 11:56 AM EDTMesoscale DiscussionSPCClay, Daviess, Dubois, Gibson, Greene, Knox and 12 more94 min
Apr 22, 2:30 PM EDTSevere Thunderstorm WatchSPCBartholomew, Boone, Brown, Clark, Clay, Crawford and 37 more8 hr
Apr 22, 4:50 PM EDTSevere Thunderstorm WatchSPCDearborn, Fayette, Franklin, Henry, Ohio, Ripley and 4 more7 hr
Apr 22, 6:11 PM EDTMesoscale DiscussionSPCBartholomew, Boone, Brown, Clark, Clay, Crawford and 36 more94 min
Apr 21, 9:19 PM EDTMesoscale DiscussionSPCBallard, Carlisle, Fulton, Hickman, McCracken86 min
Apr 22, 6:36 AM EDTMesoscale DiscussionSPCAllen, Logan, Simpson, Todd84 min

Nearby

Mesoscale Discussions in Kentucky, 2005Mesoscale Discussions in Ohio, 2005Mesoscale Discussions in Indiana, 2005Every mesoscale discussion in 2005

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.