Alert archive / Missouri / Mesoscale Discussions in 2015

Mesoscale Discussion 1271

July 1, 20154 states

The Storm Prediction Center issued this mesoscale discussion at Jul 1, 2015, 3:47 PM CDT for 4 states. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued
Jul 1, 2015, 3:47 PM CDT (20:47 UTC)
Expired
Jul 1, 2015, 6:15 PM CDT
In force
2 hr
Issued by
the Storm Prediction Center
Chance of a watch
80%
All 65 counties

Baxter County, AR, Benton County, AR, Boone County, AR, Carroll County, AR, Madison County, AR, Marion County, AR, Newton County, AR, Searcy County, AR, Van Buren County, AR, Allen County, KS, Anderson County, KS, Atchison County, KS, Bourbon County, KS, Cherokee County, KS, Coffey County, KS, Crawford County, KS, Douglas County, KS, Franklin County, KS, Greenwood County, KS, Jackson County, KS, Jefferson County, KS, Johnson County, KS, Labette County, KS, Leavenworth County, KS, Linn County, KS, Lyon County, KS, Miami County, KS, Montgomery County, KS, Neosho County, KS, Osage County, KS, Shawnee County, KS, Wabaunsee County, KS, Wilson County, KS, Woodson County, KS, Wyandotte County, KS, Barry County, MO, Barton County, MO, Bates County, MO, Cass County, MO, Cedar County, MO, Christian County, MO, Clay County, MO, Dade County, MO, Dallas County, MO, Douglas County, MO, Greene County, MO, Henry County, MO, Hickory County, MO, Jackson County, MO, Jasper County, MO, Johnson County, MO, Lafayette County, MO, Lawrence County, MO, McDonald County, MO, Newton County, MO, Ozark County, MO, Platte County, MO, Polk County, MO, St. Clair County, MO, Stone County, MO, Taney County, MO, Vernon County, MO, Webster County, MO, Craig County, OK, Ottawa County, OK

The radar

The Springfield radar (KSGF), 80 km from the middle of the area, began a volume at 20:48 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, 8.8 hours before the alert went out and 91 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 2015-07-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 626 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 2015-07-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 232 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
626 J/kg
Mixed-layer CIN
-91 J/kg
Mixed-layer LCL
620 m above ground
0-6 km bulk shear
49 kt
0-1 km storm-relative helicity
232 m²/s²
0-3 km storm-relative helicity
346 m²/s²
Significant tornado parameter
0.0
Supercell composite
14.9

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 1, 3:30 PM CDTMesoscale DiscussionSPCBarber, Comanche, Harper3 hr
Jul 1, 6:03 PM CDTTornado WatchSPCBourbon, Cherokee, Crawford, Douglas, Franklin, Jefferson and 5 more6 hr
Jul 1, 2:10 AM CDTMesoscale DiscussionSPCBenton, Camden, Hickory65 min

Nearby

Mesoscale Discussions in Missouri, 2015Mesoscale Discussions in Kansas, 2015Mesoscale Discussions in Arkansas, 2015Every 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.