Alert archive / Kentucky / Mesoscale Discussions in 2014

Mesoscale Discussion 650

May 21, 20146 counties in Illinois; 22 counties in Indiana; 37 counties in Kentucky

The Storm Prediction Center issued this mesoscale discussion at May 21, 2014, 11:39 PM CDT for 6 counties in Illinois; 22 counties in Indiana; 37 counties in Kentucky. It was in force for 96 min.

The area

The outline as issued.

The facts

Issued
May 21, 2014, 11:39 PM CDT (04:39 UTC)
Expired
May 22, 2014, 1:15 AM CDT
In force
96 min
Issued by
the Storm Prediction Center
All 65 counties

Clark County, IL, Coles County, IL, Crawford County, IL, Cumberland County, IL, Douglas County, IL, Edgar County, IL, Bartholomew County, IN, Brown County, IN, Clark County, IN, Clay County, IN, Crawford County, IN, Daviess County, IN, Floyd County, IN, Greene County, IN, Harrison County, IN, Jackson County, IN, Jefferson County, IN, Jennings County, IN, Lawrence County, IN, Martin County, IN, Monroe County, IN, Orange County, IN, Owen County, IN, Scott County, IN, Sullivan County, IN, Switzerland County, IN, Vigo County, IN, Washington County, IN, Anderson County, KY, Bourbon County, KY, Boyle County, KY, Bullitt County, KY, Carroll County, KY, Clark County, KY, Estill County, KY, Fayette County, KY, Franklin County, KY, Gallatin County, KY, Garrard County, KY, Grant County, KY, Harrison County, KY, Henry County, KY, Jackson County, KY, Jefferson County, KY, Jessamine County, KY, Lee County, KY, Lincoln County, KY, Madison County, KY, Marion County, KY, Mercer County, KY, Montgomery County, KY, Nelson County, KY, Nicholas County, KY, Oldham County, KY, Owen County, KY, Owsley County, KY, Powell County, KY, Robertson County, KY, Rockcastle County, KY, Scott County, KY, Shelby County, KY, Spencer County, KY, Trimble County, KY, Washington County, KY, Woodford County, KY

The radar

The Louisville radar (KLVX), 90 km from the middle of the area, began a volume at 04:42 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, 4.7 hours before the alert went out and 223 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 00:00Z on 2014-05-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 8 joules per kilogram.LCLLFCEL10008507005003002001001 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 00:00Z on 2014-05-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -9 square meters per square second.193958Sfc1 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
8 J/kg
Mixed-layer CIN
-248 J/kg
Mixed-layer LCL
1424 m above ground
0-6 km bulk shear
47 kt
0-1 km storm-relative helicity
-9 m²/s²
0-3 km storm-relative helicity
72 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
May 21, 7:28 PM CDTSevere Thunderstorm WatchSPCChampaign, Christian, Clark, Clay, Coles, Crawford and 19 more7 hr
May 22, 2:33 PM CDTSevere Thunderstorm WatchSPCAlexander, Massac, Pulaski5 hr
May 21, 8:27 PM CDTMesoscale DiscussionSPCClark, Crawford, Dubois, Floyd, Harrison, Orange and 7 more93 min
May 22, 2:53 AM CDTMesoscale DiscussionSPCCrawford, Dubois, Floyd, Harrison, Orange, Perry and 2 more97 min
May 22, 2:09 PM CDTMesoscale DiscussionSPCAdair, Allen, Barren, Bell, Butler, Caldwell and 43 more2 hr
May 22, 6:47 PM CDTMesoscale DiscussionSPCCalloway, Carlisle, Christian, Graves, Logan, Lyon and 4 more88 min

Nearby

Mesoscale Discussions in Kentucky, 2014Mesoscale Discussions in Indiana, 2014Mesoscale Discussions in Illinois, 2014Every 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.