Alert archive / Kansas / Mesoscale Discussions in 2021
Mesoscale Discussion 1824
The Storm Prediction Center issued this mesoscale discussion at Oct 10, 2021, 7:19 PM CDT for 11 counties in Kansas; Bates County, Missouri; Nowata County, Washington County, Oklahoma. It was in force for 86 min.
The area
The outline as issued.
The facts
- Issued
- Oct 10, 2021, 7:19 PM CDT (00:19 UTC)
- Expired
- Oct 10, 2021, 8:45 PM CDT
- In force
- 86 min
- Issued by
- the Storm Prediction Center
- Concerning
- Tornado watch 517
Counties Allen County, KS, Bourbon County, KS, Chautauqua County, KS, Cherokee County, KS, Crawford County, KS, Elk County, KS, Labette County, KS, Montgomery County, KS, Neosho County, KS, Wilson County, KS, Woodson County, KS, Bates County, MO, Nowata County, OK, Washington County, OK
The radar
The Tulsa radar (KINX), 138 km from the middle of the area, began a volume at 00:19 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 watches that followed
Watches SPC issued over any of the same counties within four hours of this discussion.
The nearest sounding before it
Springfield, MO (KSGF), launched 00:00Z, 0.3 hours before the alert went out and 165 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 2067 m above ground
- 0-6 km bulk shear
- 41 kt
- 0-1 km storm-relative helicity
- 95 m²/s²
- 0-3 km storm-relative helicity
- 192 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
134 ACUS11 KWNS 110019 SWOMCD SPC MCD 110019 MOZ000-KSZ000-OKZ000-110145- Mesoscale Discussion 1824 NWS Storm Prediction Center Norman OK 0719 PM CDT Sun Oct 10 2021 Areas affected...Northeast OK...Southeast KS...Southwest MO Concerning...Tornado Watch 517... Valid 110019Z - 110145Z The severe weather threat for Tornado Watch 517 continues. SUMMARY...Severe threat is increasing across southeast KS/southwest MO. A new tornado watch may be warranted for this region. DISCUSSION...Strong short-wave trough is advancing east across the southern High Plains this evening. In response, LLJ is forecast to increase markedly across eastern OK into southwest MO over the next several hours. 00z sounding from OUN exhibits a classic supercell wind profile, but some capping still exists near 700mb. Adequate buoyancy extends northeast ahead of the front into southeast KS which should encourage strong/severe thunderstorms along/ahead of the front in the next few hours. Strengthening low-level shear supports some risk for a few tornadoes. ..Darrow.. 10/11/2021 ...Please see www.spc.noaa.gov for graphic product... ATTN...WFO...SGF...EAX...TSA...TOP...ICT... LAT...LON 37039671 38139554 38279432 37539438 36529564 37039671
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 10, 9:24 PM CDT | Tornado Watch | SPC | Cherokee, Labette | 5 hr |
| Oct 10, 11:32 PM CDT | Mesoscale Discussion | SPC | Cherokee, Labette, Montgomery | 118 min |
| Oct 11, 1:26 AM CDT | Mesoscale Discussion | SPC | Barry, Dade, Greene, Jasper, Lawrence, McDonald and 2 more | 64 min |
| Oct 11, 5:00 AM CDT | Mesoscale Discussion | SPC | Cedar, Christian, Dade, Dallas, Greene, Hickory and 7 more | 2 hr |
| Oct 11, 9:06 AM CDT | Mesoscale Discussion | SPC | Audrain, Callaway, Franklin, Gasconade, Jefferson, Lincoln and 11 more | 2 hr |
| Oct 10, 8:11 PM CDT | Mesoscale Discussion | SPC | Atoka, Bryan, Carter, Coal, Johnston, Love and 1 more | 64 min |
| Oct 10, 10:16 PM CDT | Mesoscale Discussion | SPC | Atoka, Bryan, Choctaw, Coal, Johnston, McCurtain and 1 more | 59 min |
| Oct 10, 11:07 PM CDT | Tornado Watch | SPC | McCurtain | 5 hr |
Nearby
Mesoscale Discussions in Kansas, 2021Mesoscale Discussions in Oklahoma, 2021Mesoscale Discussions in Missouri, 2021Every mesoscale discussion in 2021
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.