Alert archive / Missouri / Mesoscale Discussions in 2014

Mesoscale Discussion 1364

July 13, 201410 counties in Illinois; 19 counties in Kentucky; 22 counties in Missouri

The Storm Prediction Center issued this mesoscale discussion at Jul 13, 2014, 10:04 PM CDT for 10 counties in Illinois; 19 counties in Kentucky; 22 counties in Missouri. It was in force for 86 min.

The area

The outline as issued.

The facts

Issued
Jul 13, 2014, 10:04 PM CDT (03:04 UTC)
Expired
Jul 13, 2014, 11:30 PM CDT
In force
86 min
Issued by
the Storm Prediction Center
Chance of a watch
20%
All 51 counties

Alexander County, IL, Gallatin County, IL, Hardin County, IL, Johnson County, IL, Massac County, IL, Pope County, IL, Pulaski County, IL, Saline County, IL, Union County, IL, Williamson County, IL, Ballard County, KY, Caldwell County, KY, Carlisle County, KY, Christian County, KY, Crittenden County, KY, Daviess County, KY, Fulton County, KY, Graves County, KY, Henderson County, KY, Hickman County, KY, Hopkins County, KY, Livingston County, KY, Lyon County, KY, Marshall County, KY, McCracken County, KY, McLean County, KY, Trigg County, KY, Union County, KY, Webster County, KY, Bollinger County, MO, Butler County, MO, Cape Girardeau County, MO, Carter County, MO, Dent County, MO, Howell County, MO, Iron County, MO, Madison County, MO, Mississippi County, MO, New Madrid County, MO, Oregon County, MO, Perry County, MO, Phelps County, MO, Reynolds County, MO, Ripley County, MO, Saint Francois County, MO, Scott County, MO, Shannon County, MO, Stoddard County, MO, Texas County, MO, Wayne County, MO, Wright County, MO

The radar

The Paducah radar (KPAH), 108 km from the middle of the area, began a volume at 03:03 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 00:00Z, 3.1 hours before the alert went out and 325 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 2014-07-14Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 724 joules per kilogram.LCLEL10008507005003002001001 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 2014-07-14The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 0 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
724 J/kg
Mixed-layer CIN
-5 J/kg
Mixed-layer LCL
1723 m above ground
0-6 km bulk shear
10 kt
0-1 km storm-relative helicity
0 m²/s²
0-3 km storm-relative helicity
0 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 14, 10:56 AM CDTMesoscale DiscussionSPCBrown, Calhoun, Cass, Champaign, Christian, DeWitt and 26 more94 min
Jul 14, 11:42 AM CDTSevere Thunderstorm WatchSPCBond, Calhoun, Champaign, Christian, Clark, Clay and 42 more6 hr
Jul 14, 2:21 PM CDTMesoscale DiscussionSPCBond, Clark, Clay, Clinton, Coles, Crawford and 29 more54 min
Jul 14, 4:53 PM CDTMesoscale DiscussionSPCEdwards, Gallatin, Hamilton, Saline, Wabash, White67 min
Jul 14, 12:10 PM CDTMesoscale DiscussionSPCAdair, Allen, Barren, Bell, Boyle, Breathitt and 50 more2 hr
Jul 14, 1:10 PM CDTMesoscale DiscussionSPCBarton, Bates, Cedar, Christian, Dade, Dallas and 10 more2 hr
Jul 14, 1:22 PM CDTSevere Thunderstorm WatchSPCDunklin, Pemiscot7 hr
Jul 14, 3:57 PM CDTMesoscale DiscussionSPCDunklin, Pemiscot93 min
Jul 14, 5:53 PM CDTMesoscale DiscussionSPCPemiscot97 min

Nearby

Mesoscale Discussions in Missouri, 2014Mesoscale Discussions in Kentucky, 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.