Alert archive / Kansas / Mesoscale Discussions in 2017
Mesoscale Discussion 523
The Storm Prediction Center issued this mesoscale discussion at Apr 19, 2017, 9:01 PM CDT for 25 counties in Kansas; Clay County, Jackson County, Platte County, Missouri. It was in force for 89 min.
The area
The outline as issued.
The facts
- Issued
- Apr 19, 2017, 9:01 PM CDT (02:01 UTC)
- Expired
- Apr 19, 2017, 10:30 PM CDT
- In force
- 89 min
- Issued by
- the Storm Prediction Center
- Chance of a watch
- 40%
All 28 counties
Anderson County, KS, Barber County, KS, Butler County, KS, Chase County, KS, Coffey County, KS, Douglas County, KS, Franklin County, KS, Greenwood County, KS, Harper County, KS, Harvey County, KS, Jefferson County, KS, Johnson County, KS, Kingman County, KS, Leavenworth County, KS, Lyon County, KS, Marion County, KS, Miami County, KS, Morris County, KS, Osage County, KS, Sedgwick County, KS, Shawnee County, KS, Sumner County, KS, Wabaunsee County, KS, Woodson County, KS, Wyandotte County, KS, Clay County, MO, Jackson County, MO, Platte County, MO
The radar
The Topeka radar (KTWX), 67 km from the middle of the area, began a volume at 02:04 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 (KFOE), launched 00:00Z, 2.0 hours before the alert went out and 72 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.
- Mixed-layer CAPE
- 590 J/kg
- Mixed-layer CIN
- -92 J/kg
- Mixed-layer LCL
- 1327 m above ground
- 0-6 km bulk shear
- 40 kt
- 0-1 km storm-relative helicity
- 134 m²/s²
- 0-3 km storm-relative helicity
- 240 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 4.8
The text
As transmitted.
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</html>SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 19, 7:01 PM CDT | Mesoscale Discussion | SPC | Atchison, Barber, Barton, Brown, Butler, Chase and 52 more | 89 min |
| Apr 20, 2:07 PM CDT | Mesoscale Discussion | SPC | Bollinger, Butler, Cape Girardeau, Dunklin, Mississippi, New Madrid and 5 more | 53 min |
Nearby
Mesoscale Discussions in Kansas, 2017Mesoscale Discussions in Missouri, 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.