Alert archive / Missouri / Mesoscale Discussions in 2015

Mesoscale Discussion 175

April 1, 20154 states

The Storm Prediction Center issued this mesoscale discussion at Apr 1, 2015, 12:39 PM CDT for 4 states. It was in force for 3 hr.

The area

The outline as issued.

The facts

Issued: Apr 1, 2015, 12:39 PM CDT (17:39 UTC)
Expired: Apr 1, 2015, 3:15 PM CDT
In force: 3 hr
Issued by: the Storm Prediction Center
Chance of a watch: 40%

All 36 counties

Baxter County, AR, Benton County, AR, Boone County, AR, Carroll County, AR, Crawford County, AR, Franklin County, AR, Johnson County, AR, Logan County, AR, Madison County, AR, Marion County, AR, Newton County, AR, Pope County, AR, Searcy County, AR, Washington County, AR, Cherokee County, KS, Crawford County, KS, Barry County, MO, Barton County, MO, Cedar County, MO, Christian County, MO, Dade County, MO, Douglas County, MO, Greene County, MO, Jasper County, MO, Lawrence County, MO, McDonald County, MO, Newton County, MO, Ozark County, MO, Polk County, MO, Stone County, MO, Taney County, MO, Webster County, MO, Adair County, OK, Craig County, OK, Delaware County, OK, Ottawa County, OK

The radar

The Springfield radar (KSGF), 76 km from the middle of the area, began a volume at 17:41 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

Springfield, MO (KSGF), launched 12:00Z, 5.7 hours before the alert went out and 37 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1257 m above ground
0-6 km bulk shear: 23 kt
0-1 km storm-relative helicity: 181 m²/s²
0-3 km storm-relative helicity: 203 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

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.

Issued	Product	Office	Counties	Lasted
Mar 31, 8:14 PM CDT	Mesoscale Discussion	SPC	Crawford, Franklin, Sebastian	91 min
Mar 31, 8:50 PM CDT	Mesoscale Discussion	SPC	Clay, Cleburne, Craighead, Crittenden, Cross, Faulkner and 10 more	85 min
Mar 31, 11:43 PM CDT	Mesoscale Discussion	SPC	Crittenden, Cross, Poinsett	92 min
Apr 1, 1:16 AM CDT	Mesoscale Discussion	SPC	Polk, Scott	89 min
Apr 1, 5:14 PM CDT	Mesoscale Discussion	SPC	Arkansas, Baxter, Boone, Carroll, Clark, Clay and 54 more	91 min
Apr 1, 3:50 PM CDT	Mesoscale Discussion	SPC	Decatur, Gove, Graham, Logan, Norton, Phillips and 3 more	115 min
Apr 1, 3:57 PM CDT	Mesoscale Discussion	SPC	Clark, Finney, Ford, Gove, Gray, Haskell and 5 more	93 min
Apr 1, 5:57 PM CDT	Severe Thunderstorm Watch	SPC	Cloud, Jewell, Mitchell, Osborne, Phillips, Republic and 3 more	7 hr
Mar 31, 9:24 PM CDT	Mesoscale Discussion	SPC	Atoka, Beckham, Caddo, Canadian, Carter, Choctaw and 29 more	66 min
Mar 31, 9:40 PM CDT	Severe Thunderstorm Watch	SPC	Blaine, Caddo, Canadian, Carter, Cleveland, Coal and 31 more	6 hr

Nearby

Mesoscale Discussions in Missouri, 2015 Mesoscale Discussions in Arkansas, 2015 Mesoscale Discussions in Oklahoma, 2015 Every mesoscale discussion in 2015

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.