Alert archive / Kentucky / Mesoscale Discussions in 2007

Mesoscale Discussion 1547

July 19, 20076 states

The Storm Prediction Center issued this mesoscale discussion at Jul 19, 2007, 5:38 PM CDT for 6 states. It was in force for 97 min.

The area

The outline as issued.

The facts

Issued
Jul 19, 2007, 5:38 PM CDT (22:38 UTC)
Expired
Jul 19, 2007, 7:15 PM CDT
In force
97 min
Issued by
the Storm Prediction Center
All 126 counties

Clinton County, IL, Edwards County, IL, Franklin County, IL, Gallatin County, IL, Hamilton County, IL, Hardin County, IL, Jackson County, IL, Jefferson County, IL, Johnson County, IL, Marion County, IL, Massac County, IL, Monroe County, IL, Perry County, IL, Pope County, IL, Randolph 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, Crawford County, IN, Gibson County, IN, Harrison County, IN, Perry County, IN, Posey County, IN, Spencer County, IN, Vanderburgh County, IN, Warrick County, IN, Adair County, KY, Anderson County, KY, Barren County, KY, Bath County, KY, Bourbon County, KY, Boyd County, KY, Boyle County, KY, Breathitt County, KY, Breckinridge County, KY, Bullitt County, KY, Butler County, KY, Caldwell County, KY, Carter County, KY, Casey County, KY, Clark County, KY, Crittenden County, KY, Daviess County, KY, Edmonson County, KY, Elliott County, KY, Estill County, KY, Fayette County, KY, Fleming County, KY, Floyd County, KY, Franklin County, KY, Garrard County, KY, Grayson County, KY, Green County, KY, Hancock County, KY, Hardin County, KY, Harrison County, KY, Hart County, KY, Henderson County, KY, Hopkins County, KY, Jackson County, KY, Jefferson County, KY, Jessamine County, KY, Johnson County, KY, Knott County, KY, Larue County, KY, Lawrence County, KY, Lee County, KY, Lewis County, KY, Lincoln County, KY, Livingston County, KY, Madison County, KY, Magoffin County, KY, Marion County, KY, Martin County, KY, McLean County, KY, Meade County, KY, Menifee County, KY, Mercer County, KY, Metcalfe County, KY, Montgomery County, KY, Morgan County, KY, Muhlenberg County, KY, Nelson County, KY, Nicholas County, KY, Ohio County, KY, Owen County, KY, Owsley County, KY, Pike County, KY, Powell County, KY, Robertson County, KY, Rockcastle County, KY, Rowan County, KY, Russell County, KY, Scott County, KY, Shelby County, KY, Spencer County, KY, Taylor County, KY, Union County, KY, Warren County, KY, Washington County, KY, Webster County, KY, Wolfe County, KY, Woodford County, KY, Jefferson County, MO, Perry County, MO, Saint Francois County, MO, Sainte Genevieve County, MO, Washington County, MO, Buchanan County, VA, Dickenson County, VA, Boone County, WV, Cabell County, WV, Fayette County, WV, Kanawha County, WV, Lincoln County, WV, Logan County, WV, McDowell County, WV, Mingo County, WV, Raleigh County, WV, Wayne County, WV, Wyoming County, WV

The radar

The Louisville radar (KLVX), 49 km from the middle of the area, began a volume at 22:41 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

Nashville Metro, TN (KBNA), launched 12:00Z, 10.6 hours before the alert went out and 201 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 12:00Z on 2007-07-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2416 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 12:00Z on 2007-07-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -30 square meters per square second.1939Sfc1 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
2416 J/kg
Mixed-layer CIN
-16 J/kg
Mixed-layer LCL
683 m above ground
0-6 km bulk shear
17 kt
0-1 km storm-relative helicity
-30 m²/s²
0-3 km storm-relative helicity
-51 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
Jul 18, 7:29 PM CDTSevere Thunderstorm WatchSPCCook, DuPage, Ford, Grundy, Iroquois, Kane and 5 more7 hr
Jul 18, 9:06 PM CDTMesoscale DiscussionSPCBureau, Carroll, Champaign, Coles, Cook, DeKalb and 38 more84 min
Jul 18, 10:23 PM CDTMesoscale DiscussionSPCMercer, Rock Island97 min
Jul 18, 11:07 PM CDTSevere Thunderstorm WatchSPCBureau, Hancock, Henderson, Henry, McDonough, Mercer and 4 more4 hr
Jul 19, 1:27 PM CDTMesoscale DiscussionSPCBond, Calhoun, Clark, Clay, Clinton, Coles and 26 more93 min
Jul 19, 1:42 PM CDTSevere Thunderstorm WatchSPCBond, Calhoun, Clay, Clinton, Crawford, Edwards and 30 more6 hr
Jul 19, 11:45 AM CDTMesoscale DiscussionSPCBartholomew, Brown, Clark, Crawford, Daviess, Dearborn and 31 more60 min
Jul 19, 12:07 PM CDTSevere Thunderstorm WatchSPCBartholomew, Brown, Clark, Dearborn, Decatur, Fayette and 13 more8 hr
Jul 19, 9:09 AM CDTMesoscale DiscussionSPCAlbemarle, Alleghany, Amherst, Arlington, Augusta, Bath and 37 more96 min
Jul 19, 1:07 PM CDTSevere Thunderstorm WatchSPCAlbemarle, Alleghany, Amelia, Amherst, Appomattox, Arlington and 83 more8 hr
Jul 19, 5:27 PM CDTMesoscale DiscussionSPCAlbemarle, Amelia, Amherst, Appomattox, Arlington, Augusta and 77 more93 min

Nearby

Mesoscale Discussions in Kentucky, 2007Mesoscale Discussions in Illinois, 2007Mesoscale Discussions in West Virginia, 2007Every mesoscale discussion in 2007

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.