Alert archive / Missouri / Mesoscale Discussions in 2020

Mesoscale Discussion 1189

July 11, 20204 states

The Storm Prediction Center issued this mesoscale discussion at Jul 11, 2020, 3:07 PM CDT for 4 states. It was in force for 83 min.

The area

The outline as issued.

The facts

Issued
Jul 11, 2020, 3:07 PM CDT (20:07 UTC)
Expired
Jul 11, 2020, 4:30 PM CDT
In force
83 min
Issued by
the Storm Prediction Center
Concerning
Severe potential...watch likely
Chance of a watch
95%
All 43 counties

Benton County, AR, Boone County, AR, Carroll County, AR, Allen County, KS, Anderson County, KS, Bourbon County, KS, Cherokee County, KS, Coffey County, KS, Crawford County, KS, Elk County, KS, Greenwood County, KS, Labette County, KS, Linn County, KS, Montgomery County, KS, Neosho County, KS, Wilson County, KS, Woodson County, KS, Barry County, MO, Barton County, MO, Bates County, MO, Cedar County, MO, Christian County, MO, Dade County, MO, Dallas County, MO, Douglas County, MO, Greene County, MO, Hickory County, MO, Jasper County, MO, Lawrence County, MO, McDonald County, MO, Newton County, MO, Ozark County, MO, Polk County, MO, St. Clair County, MO, Stone County, MO, Taney County, MO, Vernon County, MO, Webster County, MO, Wright County, MO, Craig County, OK, Delaware County, OK, Nowata County, OK, Ottawa County, OK

The radar

The Springfield radar (KSGF), 82 km from the middle of the area, began a volume at 20:10 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

Springfield, MO (KSGF), launched 12:00Z, 8.1 hours before the alert went out and 68 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, Springfield, MO at 12:00Z on 2020-07-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1333 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, Springfield, MO at 12:00Z on 2020-07-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 41 square meters per square second.19395878Sfc1 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
1333 J/kg
Mixed-layer CIN
-95 J/kg
Mixed-layer LCL
1092 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
41 m²/s²
0-3 km storm-relative helicity
80 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.6

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
Jul 11, 6:08 PM CDTSevere Thunderstorm WatchSPCBenton, Carroll, Crawford, Franklin, Madison, Sebastian and 1 more7 hr
Jul 10, 7:00 PM CDTMesoscale DiscussionSPCCloud, Jewell, Mitchell, Osborne, Phillips, Republic and 1 more60 min
Jul 11, 1:23 AM CDTMesoscale DiscussionSPCBrown, Jewell, Marshall, Nemaha, Phillips, Republic and 2 more2 hr
Jul 11, 7:38 AM CDTMesoscale DiscussionSPCButler, Chase, Chautauqua, Cowley, Elk, Greenwood and 1 more97 min
Jul 11, 12:43 PM CDTMesoscale DiscussionSPCAllen, Anderson, Atchison, Bourbon, Brown, Clay and 22 more92 min
Jul 11, 1:35 PM CDTSevere Thunderstorm WatchSPCAnderson, Atchison, Coffey, Dickinson, Douglas, Franklin and 17 more4 hr
Jul 11, 3:36 PM CDTSevere Thunderstorm WatchSPCAllen, Bourbon, Cherokee, Crawford, Labette, Neosho and 2 more7 hr
Jul 11, 4:00 PM CDTMesoscale DiscussionSPCBarber, Butler, Chase, Chautauqua, Clark, Comanche and 24 more3 hr
Jul 11, 3:58 PM CDTSevere Thunderstorm WatchSPCClark8 hr

Nearby

Mesoscale Discussions in Missouri, 2020Mesoscale Discussions in Kansas, 2020Mesoscale Discussions in Oklahoma, 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.