Alert archive / Missouri / Mesoscale Discussions in 2025

Mesoscale Discussion 1649

July 11, 2025Johnson County, Wyandotte County, Kansas; 21 counties in Missouri

The Storm Prediction Center issued this mesoscale discussion at Jul 11, 2025, 6:47 PM CDT for Johnson County, Wyandotte County, Kansas; 21 counties in Missouri. It was in force for 58 min.

The area

The outline as issued.

The facts

Issued: Jul 11, 2025, 6:47 PM CDT (23:47 UTC)
Expired: Jul 11, 2025, 7:45 PM CDT
In force: 58 min
Issued by: the Storm Prediction Center
Concerning: Severe thunderstorm watch 507

All 23 counties

Johnson County, KS, Wyandotte County, KS, Adair County, MO, Caldwell County, MO, Carroll County, MO, Cass County, MO, Chariton County, MO, Clay County, MO, Daviess County, MO, Grundy County, MO, Jackson County, MO, Johnson County, MO, Knox County, MO, Lafayette County, MO, Linn County, MO, Livingston County, MO, Macon County, MO, Putnam County, MO, Randolph County, MO, Ray County, MO, Saline County, MO, Shelby County, MO, Sullivan County, MO

The radar

The Pleasant Hill radar (KEAX), 102 km from the middle of the area, began a volume at 23:46 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

Topeka, KS (KTOP), launched 12:00Z, 11.8 hours before the alert went out and 186 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: 1868 J/kg
Mixed-layer CIN: -154 J/kg
Mixed-layer LCL: 1090 m above ground
0-6 km bulk shear: 33 kt
0-1 km storm-relative helicity: 187 m²/s²
0-3 km storm-relative helicity: 161 m²/s²
Significant tornado parameter: 0.3
Supercell composite: 1.5

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.

Issued	Product	Office	Counties	Lasted
Jul 11, 2:01 PM CDT	Mesoscale Discussion	SPC	Atchison, Brown, Doniphan, Douglas, Franklin, Jefferson and 4 more	89 min
Jul 11, 2:19 PM CDT	Severe Thunderstorm Watch	SPC	Atchison, Doniphan, Johnson, Leavenworth, Miami, Wyandotte	8 hr
Jul 11, 3:16 PM CDT	Mesoscale Discussion	SPC	Allen, Anderson, Barber, Butler, Chase, Chautauqua and 21 more	119 min
Jul 11, 3:36 PM CDT	Mesoscale Discussion	SPC	Cheyenne	114 min
Jul 11, 5:17 PM CDT	Severe Thunderstorm Watch	SPC	Cheyenne, Decatur, Rawlins	7 hr
Jul 10, 10:51 PM CDT	Mesoscale Discussion	SPC	Atchison	114 min
Jul 11, 12:18 PM CDT	Mesoscale Discussion	SPC	Adair, Clark, Gentry, Harrison, Knox, Lewis and 7 more	87 min
Jul 11, 12:54 PM CDT	Tornado Watch	SPC	Clark, Gentry, Harrison, Mercer, Putnam, Schuyler and 2 more	7 hr
Jul 11, 3:53 PM CDT	Mesoscale Discussion	SPC	Clark, Harrison, Mercer, Putnam, Schuyler, Scotland and 1 more	97 min

Nearby

Mesoscale Discussions in Missouri, 2025 Mesoscale Discussions in Kansas, 2025 Every mesoscale discussion in 2025

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.