Alert archive / Kentucky / Mesoscale Discussions in 2013

Mesoscale Discussion 83

January 29, 20134 states

The Storm Prediction Center issued this mesoscale discussion at Jan 29, 2013, 9:19 PM CST for 4 states. It was in force for 86 min.

The area

The outline as issued.

The facts

Issued
Jan 29, 2013, 9:19 PM CST (03:19 UTC)
Expired
Jan 29, 2013, 10:45 PM CST
In force
86 min
Issued by
the Storm Prediction Center
All 120 counties

Alexander County, IL, Clark County, IL, Clay County, IL, Crawford County, IL, Edwards County, IL, Franklin County, IL, Gallatin County, IL, Hamilton County, IL, Hardin County, IL, Jackson County, IL, Jasper County, IL, Jefferson County, IL, Johnson County, IL, Lawrence County, IL, Marion County, IL, Massac County, IL, Perry County, IL, Pope County, IL, Pulaski County, IL, Randolph County, IL, Richland County, IL, Saline County, IL, Union County, IL, Wabash County, IL, Washington County, IL, Wayne County, IL, White County, IL, Williamson County, IL, Bartholomew County, IN, Brown County, IN, Clark County, IN, Clay County, IN, Crawford County, IN, Daviess County, IN, Decatur County, IN, Dubois County, IN, Floyd County, IN, Gibson County, IN, Greene County, IN, Harrison County, IN, Hendricks County, IN, Jackson County, IN, Jefferson County, IN, Jennings County, IN, Johnson County, IN, Knox County, IN, Lawrence County, IN, Martin County, IN, Monroe County, IN, Morgan County, IN, Orange County, IN, Owen County, IN, Perry County, IN, Pike County, IN, Posey County, IN, Putnam County, IN, Scott County, IN, Shelby County, IN, Spencer County, IN, Sullivan County, IN, Vanderburgh County, IN, Vigo County, IN, Warrick County, IN, Washington County, IN, Allen County, KY, Ballard County, KY, Barren County, KY, Breckinridge County, KY, Bullitt County, KY, Butler County, KY, Caldwell County, KY, Calloway County, KY, Carlisle County, KY, Christian County, KY, Crittenden County, KY, Daviess County, KY, Edmonson County, KY, Fulton County, KY, Graves County, KY, Grayson County, KY, Hancock County, KY, Hardin County, KY, Hart County, KY, Henderson County, KY, Henry County, KY, Hickman County, KY, Hopkins County, KY, Jefferson County, KY, Larue County, KY, Livingston County, KY, Logan County, KY, Lyon County, KY, Marshall County, KY, McCracken County, KY, McLean County, KY, Meade County, KY, Muhlenberg County, KY, Nelson County, KY, Ohio County, KY, Oldham County, KY, Shelby County, KY, Simpson County, KY, Spencer County, KY, Todd County, KY, Trigg County, KY, Trimble County, KY, Union County, KY, Warren County, KY, Webster County, KY, Bollinger County, MO, Butler County, MO, Cape Girardeau County, MO, Madison County, MO, Mississippi County, MO, New Madrid County, MO, Perry County, MO, Sainte Genevieve County, MO, Scott County, MO, Stoddard County, MO, Wayne County, MO

The radar

The Evansville,IN radar (KVWX), 79 km from the middle of the area, began a volume at 03:19 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

Nashville Metro, TN (KBNA), launched 00:00Z, 3.3 hours before the alert went out and 226 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, Nashville Metro, TN at 00:00Z on 2013-01-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 91 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, Nashville Metro, TN at 00:00Z on 2013-01-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 345 square meters per square second.1939587897Sfc1 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
91 J/kg
Mixed-layer CIN
-78 J/kg
Mixed-layer LCL
520 m above ground
0-6 km bulk shear
60 kt
0-1 km storm-relative helicity
345 m²/s²
0-3 km storm-relative helicity
364 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.2

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
Jan 29, 6:08 PM CSTMesoscale DiscussionSPCAlexander, Bond, Champaign, Christian, Clark, Clay and 39 more2 hr
Jan 29, 7:13 PM CSTTornado WatchSPCAlexander, Edwards, Franklin, Gallatin, Hamilton, Hardin and 14 more6 hr
Jan 29, 9:35 PM CSTTornado WatchSPCClark, Clay, Crawford, Jasper, Lawrence, Richland6 hr
Jan 29, 11:05 PM CSTMesoscale DiscussionSPCAdams, Allen, Blackford, Boone, Carroll, Cass and 37 more85 min
Jan 30, 12:45 AM CSTMesoscale DiscussionSPCDearborn, Fayette, Franklin, Ohio, Ripley, Switzerland and 2 more60 min
Jan 30, 2:33 AM CSTMesoscale DiscussionSPCBartholomew, Brown, Clark, Crawford, Dearborn, Decatur and 15 more57 min
Jan 29, 9:49 PM CSTMesoscale DiscussionSPCCalloway, Fulton116 min
Jan 30, 3:35 AM CSTTornado WatchSPCAdair, Allen, Anderson, Barren, Bath, Bourbon and 57 more4 hr
Jan 30, 4:51 AM CSTTornado WatchSPCBath, Bell, Boyd, Breathitt, Carter, Clay and 31 more7 hr
Jan 30, 6:38 AM CSTMesoscale DiscussionSPCBell, Boyd, Breathitt, Carter, Clay, Elliott and 21 more97 min
Jan 29, 8:11 PM CSTMesoscale DiscussionSPCDunklin94 min
Jan 29, 8:29 PM CSTMesoscale DiscussionSPCAtchison4 hr

Nearby

Mesoscale Discussions in Kentucky, 2013Mesoscale Discussions in Indiana, 2013Mesoscale Discussions in Illinois, 2013Every mesoscale discussion in 2013

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.