Alert archive / Kentucky / Mesoscale Discussions in 2020

Mesoscale Discussion 207

March 19, 20205 states

The Storm Prediction Center issued this mesoscale discussion at Mar 19, 2020, 3:40 PM CDT for 5 states. It was in force for 65 min.

The area

The outline as issued.

The facts

Issued
Mar 19, 2020, 3:40 PM CDT (20:40 UTC)
Expired
Mar 19, 2020, 4:45 PM CDT
In force
65 min
Issued by
the Storm Prediction Center
Chance of a watch
80%
All 106 counties

Clay County, AR, Randolph County, AR, Alexander 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, Lawrence County, IL, Massac County, IL, Pope County, IL, Pulaski County, IL, Saline County, IL, Union County, IL, Wabash County, IL, Wayne County, IL, White County, IL, Williamson County, IL, Clark County, IN, Crawford County, IN, Daviess County, IN, Dearborn County, IN, Dubois County, IN, Floyd County, IN, Gibson County, IN, Harrison County, IN, Jackson County, IN, Jefferson County, IN, Jennings County, IN, Knox County, IN, Lawrence County, IN, Martin County, IN, Ohio County, IN, Orange County, IN, Perry County, IN, Pike County, IN, Posey County, IN, Ripley County, IN, Scott County, IN, Spencer County, IN, Switzerland County, IN, Vanderburgh County, IN, Warrick County, IN, Washington County, IN, Anderson County, KY, Ballard County, KY, Boone County, KY, Bracken County, KY, Breckinridge County, KY, Bullitt County, KY, Caldwell County, KY, Campbell County, KY, Carlisle County, KY, Carroll County, KY, Crittenden County, KY, Daviess County, KY, Franklin County, KY, Fulton County, KY, Gallatin County, KY, Grant County, KY, Graves County, KY, Grayson County, KY, Hancock County, KY, Hardin County, KY, Harrison County, KY, Henderson County, KY, Henry County, KY, Hickman County, KY, Hopkins County, KY, Jefferson County, KY, Kenton County, KY, Larue County, KY, Livingston 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, Owen County, KY, Pendleton County, KY, Scott County, KY, Shelby County, KY, Spencer County, KY, Trimble County, KY, Union County, KY, Webster County, KY, Bollinger County, MO, Butler County, MO, Cape Girardeau County, MO, Carter County, MO, Madison County, MO, Mississippi County, MO, New Madrid County, MO, Oregon County, MO, Perry County, MO, Ripley County, MO, Scott County, MO, Stoddard County, MO, Wayne County, MO

The radar

The Evansville,IN radar (KVWX), 72 km from the middle of the area, began a volume at 20:39 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, 8.7 hours before the alert went out and 265 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 2020-03-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 2020-03-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 222 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
538 m above ground
0-6 km bulk shear
53 kt
0-1 km storm-relative helicity
222 m²/s²
0-3 km storm-relative helicity
240 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

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SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Mar 19, 11:05 AM CDTMesoscale DiscussionSPCBaxter, Benton, Boone, Carroll, Clay, Cleburne and 21 more115 min
Mar 19, 1:58 PM CDTMesoscale DiscussionSPCGarland, Hempstead, Hot Spring, Howard, Little River, Logan and 9 more62 min
Mar 19, 2:24 PM CDTTornado WatchSPCBaxter, Benton, Boone, Carroll, Clark, Cleburne and 48 more8 hr
Mar 19, 6:06 PM CDTMesoscale DiscussionSPCFranklin, Johnson, Logan, Newton, Polk, Pope and 3 more84 min
Mar 19, 4:06 PM CDTTornado WatchSPCAlexander, Edwards, Franklin, Gallatin, Hamilton, Hardin and 11 more7 hr
Mar 19, 5:16 PM CDTMesoscale DiscussionSPCDaviess, Dubois, Gibson, Knox, Lawrence, Martin and 3 more89 min
Mar 19, 2:41 PM CDTMesoscale DiscussionSPCAdair, Andrew, Atchison, Buchanan, Caldwell, Carroll and 22 more3 hr
Mar 19, 3:29 PM CDTTornado WatchSPCAndrew, Atchison, Gentry, Harrison, Holt, Mercer and 4 more8 hr
Mar 19, 5:43 PM CDTMesoscale DiscussionSPCAndrew, Atchison, Buchanan, DeKalb, Gentry, Harrison and 5 more2 hr

Nearby

Mesoscale Discussions in Kentucky, 2020Mesoscale Discussions in Indiana, 2020Mesoscale Discussions in Illinois, 2020Every mesoscale discussion in 2020

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.