Alert archive / Kansas / Mesoscale Discussions in 2019
Mesoscale Discussion 2000
The Storm Prediction Center issued this mesoscale discussion at Sep 21, 2019, 10:32 PM CDT for 4 states. It was in force for 118 min.
The area
The outline as issued.
The facts
- Issued
- Sep 21, 2019, 10:32 PM CDT (03:32 UTC)
- Expired
- Sep 22, 2019, 12:30 AM CDT
- In force
- 118 min
- Issued by
- the Storm Prediction Center
All 34 counties
Fremont County, IA, Mills County, IA, Montgomery County, IA, Page County, IA, Clay County, KS, Cloud County, KS, Ellis County, KS, Ellsworth County, KS, Gove County, KS, Lane County, KS, Lincoln County, KS, Marshall County, KS, Mitchell County, KS, Nemaha County, KS, Ness County, KS, Osborne County, KS, Ottawa County, KS, Republic County, KS, Riley County, KS, Rooks County, KS, Russell County, KS, Saline County, KS, Trego County, KS, Washington County, KS, Atchison County, MO, Holt County, MO, Cass County, NE, Gage County, NE, Jefferson County, NE, Johnson County, NE, Nemaha County, NE, Otoe County, NE, Pawnee County, NE, Richardson County, NE
The radar
The Grand Island radar (KUEX), 93 km from the middle of the area, began a volume at 03:34 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 00:00Z, 3.5 hours before the alert went out and 233 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
- 1313 J/kg
- Mixed-layer CIN
- -19 J/kg
- Mixed-layer LCL
- 592 m above ground
- 0-6 km bulk shear
- 37 kt
- 0-1 km storm-relative helicity
- 231 m²/s²
- 0-3 km storm-relative helicity
- 270 m²/s²
- Significant tornado parameter
- 1.6
- Supercell composite
- 8.1
The text
As transmitted.
094
ACUS11 KWNS 220333
SWOMCD
SPC MCD 220332
MOZ000-IAZ000-NEZ000-KSZ000-220530-
Mesoscale Discussion 2000
NWS Storm Prediction Center Norman OK
1032 PM CDT Sat Sep 21 2019
Areas affected...KS...Southwest IA...Northwest MO
Concerning...Severe Thunderstorm Watch 657...
Valid 220332Z - 220530Z
The severe weather threat for Severe Thunderstorm Watch 657
continues.
SUMMARY...Severe threat is gradually shifting east and waning. New
WW is not anticipated.
DISCUSSION...Isolated severe wind gusts have been noted within the
last hour along strongest portion of the squall line near CNK. This
activity is shifting east along the NE/KS border and should progress
east of ww657 in the next 1-2hr as LLJ focuses into this portion of
the eastern Plains. While convection should remain organized,
overall severe threat appears to be decreasing, especially as
thunderstorms shift east of the MO river. A new WW is not
anticipated downstream.
..Darrow.. 09/22/2019
...Please see www.spc.noaa.gov for graphic product...
ATTN...WFO...EAX...OAX...TOP...ICT...GID...DDC...GLD...
LAT...LON 38920084 39799779 41489533 40269485 38699759 38400062
38920084SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 21, 7:54 PM CDT | Mesoscale Discussion | SPC | Adair, Adams, Audubon, Boone, Cass, Clarke and 19 more | 2 hr |
| Sep 21, 7:25 PM CDT | Mesoscale Discussion | SPC | Barton, Clay, Cloud, Dickinson, Edwards, Ellis and 20 more | 2 hr |
Nearby
Mesoscale Discussions in Kansas, 2019Mesoscale Discussions in Nebraska, 2019Mesoscale Discussions in Iowa, 2019Every mesoscale discussion in 2019
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.