Alert archive / Kansas / Mesoscale Discussions in 2017
Mesoscale Discussion 1113
The Storm Prediction Center issued this mesoscale discussion at Jun 21, 2017, 6:34 PM CDT for 25 counties in Kansas; 8 counties in Nebraska; Texas County, Oklahoma. It was in force for 116 min.
The area
The outline as issued.
The facts
- Issued
- Jun 21, 2017, 6:34 PM CDT (23:34 UTC)
- Expired
- Jun 21, 2017, 8:30 PM CDT
- In force
- 116 min
- Issued by
- the Storm Prediction Center
All 34 counties
Clark County, KS, Ellis County, KS, Finney County, KS, Ford County, KS, Gove County, KS, Graham County, KS, Grant County, KS, Gray County, KS, Haskell County, KS, Hodgeman County, KS, Kearny County, KS, Lane County, KS, Meade County, KS, Morton County, KS, Ness County, KS, Norton County, KS, Phillips County, KS, Rooks County, KS, Rush County, KS, Scott County, KS, Seward County, KS, Sheridan County, KS, Stanton County, KS, Stevens County, KS, Trego County, KS, Buffalo County, NE, Dawson County, NE, Franklin County, NE, Furnas County, NE, Gosper County, NE, Harlan County, NE, Kearney County, NE, Phelps County, NE, Texas County, OK
The radar
The Goodland radar (KGLD), 125 km from the middle of the area, began a volume at 23:37 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
Dodge City, (KDDC), launched 12:00Z, 11.6 hours before the alert went out and 156 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
- 730 J/kg
- Mixed-layer CIN
- -454 J/kg
- Mixed-layer LCL
- 1859 m above ground
- 0-6 km bulk shear
- 24 kt
- 0-1 km storm-relative helicity
- 147 m²/s²
- 0-3 km storm-relative helicity
- 222 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
849
ACUS11 KWNS 212335
SWOMCD
SPC MCD 212334
KSZ000-NEZ000-OKZ000-COZ000-220130-
Mesoscale Discussion 1113
NWS Storm Prediction Center Norman OK
0634 PM CDT Wed Jun 21 2017
Areas affected...south central Nebraska/western Kansas and vicinity
Concerning...Severe Thunderstorm Watch 360...
Valid 212334Z - 220130Z
The severe weather threat for Severe Thunderstorm Watch 360
continues.
SUMMARY...Scattered to isolated thunderstorms continue across parts
of the watch area, where local risk for hail and damaging wind gusts
continues.
DISCUSSION...Latest radar loop shows isolated thunderstorms ongoing
across south central Nebraska, and then more numerous storms
concentrated over southwest Kansas and vicinity. The storms are
ongoing near/ahead of a north-south surface trough, within an axis
of moderate instability (mixed-layer CAPE average 2000 to 3000 J/kg
per objective analysis). While flow aloft -- and thus deep-layer
shear -- remains on the marginal side for well-organized updrafts
(and hence the rather transient nature of the stronger cores),
potential for locally damaging winds and hail will continue over the
next couple of hours with a few of the strongest storms.
..Goss.. 06/21/2017
...Please see www.spc.noaa.gov for graphic product...
ATTN...WFO...GID...LBF...DDC...GLD...AMA...PUB...
LAT...LON 41339993 41449925 41019884 39019904 37099986 36500099
36600215 36950232 38880066 40420003 41339993SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 21, 2:30 PM CDT | Mesoscale Discussion | SPC | Decatur, Ellis, Finney, Ford, Gove, Graham and 30 more | 2 hr |
| Jun 21, 4:37 PM CDT | Severe Thunderstorm Watch | SPC | Decatur, Ellis, Finney, Ford, Gove, Graham and 21 more | 5 hr |
Nearby
Mesoscale Discussions in Kansas, 2017Mesoscale Discussions in Nebraska, 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.