Alert archive / Kentucky / Mesoscale Discussions in 2012

Mesoscale Discussion 1610

July 26, 20124 states

The Storm Prediction Center issued this mesoscale discussion at Jul 26, 2012, 3:55 PM CDT for 4 states. It was in force for 35 min.

The area

The outline as issued.

The facts

Issued
Jul 26, 2012, 3:55 PM CDT (20:55 UTC)
Expired
Jul 26, 2012, 4:30 PM CDT
In force
35 min
Issued by
the Storm Prediction Center
Concerning
Severe thunderstorm watch 526
All 139 counties

Alexander County, IL, Clay County, IL, Clinton 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, Monroe County, IL, Perry County, IL, Pope County, IL, Pulaski County, IL, Randolph County, IL, Richland County, IL, Saint Clair 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, Dearborn County, IN, Decatur County, IN, Dubois County, IN, Floyd County, IN, Franklin County, IN, Gibson County, IN, Greene County, IN, Harrison County, IN, Jackson County, IN, Jefferson County, IN, Jennings County, IN, Knox County, IN, Lawrence County, IN, Martin County, IN, Monroe County, IN, Ohio County, IN, Orange County, IN, Owen County, IN, Perry County, IN, Pike County, IN, Posey County, IN, Ripley County, IN, Scott County, IN, Spencer County, IN, Sullivan County, IN, Switzerland County, IN, Vanderburgh County, IN, Warrick County, IN, Washington County, IN, Anderson County, KY, Ballard County, KY, Breckinridge County, KY, Bullitt County, KY, Butler County, KY, Caldwell County, KY, Carlisle County, KY, Carroll County, KY, Christian County, KY, Crittenden County, KY, Daviess County, KY, Edmonson County, KY, Franklin 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, Spencer County, KY, Todd County, KY, Trigg County, KY, Trimble County, KY, Union County, KY, Warren County, KY, Washington County, KY, Webster County, KY, Bollinger County, MO, Butler County, MO, Cape Girardeau County, MO, Carter County, MO, Christian County, MO, Dent County, MO, Douglas County, MO, Howell County, MO, Iron County, MO, Jefferson County, MO, Madison County, MO, Mississippi County, MO, New Madrid County, MO, Oregon County, MO, Ozark County, MO, Perry County, MO, Reynolds County, MO, Ripley County, MO, Saint Francois County, MO, Sainte Genevieve County, MO, Scott County, MO, Shannon County, MO, Stoddard County, MO, Stone County, MO, Taney County, MO, Texas County, MO, Washington County, MO, Wayne County, MO, Wright County, MO

The radar

The Paducah radar (KPAH), 93 km from the middle of the area, began a volume at 20:56 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

Lincoln, IL (KILX), launched 12:00Z, 8.9 hours before the alert went out and 285 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, Lincoln, IL at 12:00Z on 2012-07-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 98 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, Lincoln, IL at 12:00Z on 2012-07-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -83 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
98 J/kg
Mixed-layer CIN
-223 J/kg
Mixed-layer LCL
1355 m above ground
0-6 km bulk shear
52 kt
0-1 km storm-relative helicity
-83 m²/s²
0-3 km storm-relative helicity
-30 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
Jul 25, 8:40 PM CDTMesoscale DiscussionSPCCarroll, Henry, Jo Daviess, Mercer, Rock Island, Stephenson and 1 more65 min
Jul 25, 8:57 PM CDTSevere Thunderstorm WatchSPCCarroll, Jo Daviess, Lee, Ogle, Rock Island, Stephenson and 2 more6 hr
Jul 25, 11:34 PM CDTMesoscale DiscussionSPCBoone, Bureau, Carroll, DeKalb, Henry, Jo Daviess and 7 more86 min
Jul 26, 1:40 AM CDTMesoscale DiscussionSPCBoone, Bureau, Cook, DeKalb, DuPage, Grundy and 15 more65 min
Jul 26, 12:09 PM CDTMesoscale DiscussionSPCBoone, McHenry2 hr
Jul 26, 1:25 PM CDTMesoscale DiscussionSPCAlexander, Bond, Clay, Clinton, Cumberland, Edwards and 27 more65 min
Jul 26, 1:46 PM CDTSevere Thunderstorm WatchSPCAlexander, Clark, Clay, Clinton, Crawford, Cumberland and 28 more10 hr
Jul 26, 6:29 PM CDTMesoscale DiscussionSPCAlexander, Gallatin, Hamilton, Hardin, Johnson, Massac and 5 more61 min
Jul 26, 11:26 AM CDTMesoscale DiscussionSPCBartholomew, Blackford, Brown, Clark, Clay, Crawford and 37 more2 hr
Jul 26, 12:16 PM CDTSevere Thunderstorm WatchSPCDearborn, Fayette, Franklin, Ohio, Ripley, Switzerland and 2 more9 hr
Jul 26, 2:37 PM CDTMesoscale DiscussionSPCBoone, Boyd, Bracken, Campbell, Carter, Fleming and 8 more113 min
Jul 26, 3:57 PM CDTMesoscale DiscussionSPCBath, Bourbon, Breathitt, Carter, Casey, Clark and 30 more2 hr
Jul 26, 5:06 PM CDTMesoscale DiscussionSPCBoyd, Greenup, Lewis84 min
Jul 26, 5:26 PM CDTSevere Thunderstorm WatchSPCBath, Boyd, Breathitt, Carter, Clay, Elliott and 24 more7 hr
Jul 25, 7:21 PM CDTMesoscale DiscussionSPCAtchison54 min
Jul 26, 1:44 PM CDTMesoscale DiscussionSPCDunklin, Pemiscot3 hr
Jul 26, 5:27 PM CDTMesoscale DiscussionSPCDunklin, Pemiscot33 min
Jul 26, 5:46 PM CDTSevere Thunderstorm WatchSPCDunklin, Pemiscot6 hr

Nearby

Mesoscale Discussions in Kentucky, 2012Mesoscale Discussions in Indiana, 2012Mesoscale Discussions in Illinois, 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.