Alert archive / Kansas / Mesoscale Discussions in 2017

Mesoscale Discussion 1650

September 16, 20179 counties in Kansas; 5 counties in Missouri; Craig County, Nowata County, Washington County, Oklahoma

The Storm Prediction Center issued this mesoscale discussion at Sep 16, 2017, 3:55 PM CDT for 9 counties in Kansas; 5 counties in Missouri; Craig County, Nowata County, Washington County, Oklahoma. It was in force for 3 hr.

The area

The outline as issued.

The facts

Issued
Sep 16, 2017, 3:55 PM CDT (20:55 UTC)
Expired
Sep 16, 2017, 6:30 PM CDT
In force
3 hr
Issued by
the Storm Prediction Center
Chance of a watch
20%

Counties Allen County, KS, Bourbon County, KS, Cherokee County, KS, Crawford County, KS, Labette County, KS, Linn County, KS, Miami County, KS, Montgomery County, KS, Neosho County, KS, Barton County, MO, Bates County, MO, Cass County, MO, Jackson County, MO, Vernon County, MO, Craig County, OK, Nowata County, OK, Washington County, OK

The radar

The Tulsa radar (KINX), 153 km from the middle of the area, began a volume at 20:55 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, 8.9 hours before the alert went out and 139 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 2017-09-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1 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 2017-09-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 7 square meters per square second.1939Sfc1 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
1 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1106 m above ground
0-6 km bulk shear
8 kt
0-1 km storm-relative helicity
7 m²/s²
0-3 km storm-relative helicity
40 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

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
Sep 16, 3:47 PM CDTMesoscale DiscussionSPCButler, Chase, Clay, Dickinson, Geary, Harvey and 13 more2 hr

Nearby

Mesoscale Discussions in Kansas, 2017Mesoscale Discussions in Missouri, 2017Mesoscale Discussions in Oklahoma, 2017Every mesoscale discussion in 2017

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.