Alert archive / Missouri / Mesoscale Discussions in 2011

Mesoscale Discussion 1425

June 27, 201115 counties in Arkansas; 25 counties in Missouri

The Storm Prediction Center issued this mesoscale discussion at Jun 27, 2011, 7:05 PM CDT for 15 counties in Arkansas; 25 counties in Missouri. It was in force for 115 min.

The area

The outline as issued.

The facts

Issued
Jun 27, 2011, 7:05 PM CDT (00:05 UTC)
Expired
Jun 27, 2011, 9:00 PM CDT
In force
115 min
Issued by
the Storm Prediction Center
All 40 counties

Baxter County, AR, Benton County, AR, Boone County, AR, Carroll County, AR, Clay County, AR, Fulton County, AR, Greene County, AR, Izard County, AR, Lawrence County, AR, Madison County, AR, Marion County, AR, Randolph County, AR, Searcy County, AR, Sharp County, AR, Stone County, AR, Barry County, MO, Butler County, MO, Carter County, MO, Christian County, MO, Dade County, MO, Douglas County, MO, Greene County, MO, Howell County, MO, Lawrence County, MO, McDonald County, MO, New Madrid County, MO, Newton County, MO, Oregon County, MO, Ozark County, MO, Reynolds County, MO, Ripley County, MO, Scott County, MO, Shannon County, MO, Stoddard County, MO, Stone County, MO, Taney County, MO, Texas County, MO, Wayne County, MO, Webster County, MO, Wright County, MO

The radar

The Springfield radar (KSGF), 118 km from the middle of the area, began a volume at 00:07 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

Springfield, MO (KSGF), launched 00:00Z, 0.1 hours before the alert went out and 142 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 00:00Z on 2011-06-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3014 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 00:00Z on 2011-06-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 80 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
3014 J/kg
Mixed-layer CIN
-12 J/kg
Mixed-layer LCL
1146 m above ground
0-6 km bulk shear
48 kt
0-1 km storm-relative helicity
80 m²/s²
0-3 km storm-relative helicity
109 m²/s²
Significant tornado parameter
1.4
Supercell composite
8.5

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
Jun 28, 4:08 AM CDTMesoscale DiscussionSPCBaxter, Benton, Boone, Carroll, Clay, Cleburne and 25 more82 min
Jun 28, 4:17 AM CDTSevere Thunderstorm WatchSPCBaxter, Boone, Carroll, Clay, Cleburne, Craighead and 20 more8 hr
Jun 28, 6:34 AM CDTMesoscale DiscussionSPCArkansas, Clay, Cleburne, Conway, Craighead, Crittenden and 28 more86 min
Jun 28, 7:06 AM CDTSevere Thunderstorm WatchSPCArkansas, Bradley, Calhoun, Clark, Cleveland, Conway and 22 more5 hr
Jun 28, 9:52 AM CDTMesoscale DiscussionSPCAshley, Bradley, Calhoun, Chicot, Dallas, Drew and 1 more113 min
Jun 28, 10:26 AM CDTSevere Thunderstorm WatchSPCAshley, Chicot8 hr
Jun 28, 11:42 AM CDTMesoscale DiscussionSPCBradley, Calhoun, Clark, Columbia, Dallas, Garland and 13 more93 min
Jun 28, 11:51 AM CDTSevere Thunderstorm WatchSPCBradley, Calhoun, Clark, Cleveland, Columbia, Conway and 28 more7 hr
Jun 28, 3:09 PM CDTMesoscale DiscussionSPCAshley, Bradley, Calhoun, Clark, Cleveland, Columbia and 27 more96 min
Jun 28, 6:09 PM CDTMesoscale DiscussionSPCColumbia, Hempstead, Howard, Lafayette, Little River, Miller and 3 more96 min

Nearby

Mesoscale Discussions in Missouri, 2011Mesoscale Discussions in Arkansas, 2011Every mesoscale discussion in 2011

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.