Alert archive / Kansas / Mesoscale Discussions in 2021
Mesoscale Discussion 195
The Storm Prediction Center issued this mesoscale discussion at Mar 17, 2021, 5:18 AM CDT for 7 counties in Kansas; Barton County, Bates County, Vernon County, Missouri; Craig County, Nowata County, Washington County, Oklahoma. It was in force for 87 min.
The area
The outline as issued.
The facts
- Issued
- Mar 17, 2021, 5:18 AM CDT (10:18 UTC)
- Expired
- Mar 17, 2021, 6:45 AM CDT
- In force
- 87 min
- Issued by
- the Storm Prediction Center
- Concerning
- Severe thunderstorm watch 24
Counties Bourbon County, KS, Cherokee County, KS, Crawford County, KS, Labette County, KS, Linn County, KS, Montgomery County, KS, Neosho County, KS, Barton County, MO, Bates County, MO, Vernon County, MO, Craig County, OK, Nowata County, OK, Washington County, OK
The radar
The Tulsa radar (KINX), 104 km from the middle of the area, began a volume at 10:21 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 00:00Z, 10.3 hours before the alert went out and 140 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
- 2158 m above ground
- 0-6 km bulk shear
- 50 kt
- 0-1 km storm-relative helicity
- 180 m²/s²
- 0-3 km storm-relative helicity
- 312 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
930
ACUS11 KWNS 171018
SWOMCD
SPC MCD 171018
MOZ000-KSZ000-OKZ000-171145-
Mesoscale Discussion 0195
NWS Storm Prediction Center Norman OK
0518 AM CDT Wed Mar 17 2021
Areas affected...Portions of northeastern OK...southeastern KS...and
southwestern/west-central MO
Concerning...Severe Thunderstorm Watch 24...
Valid 171018Z - 171145Z
The severe weather threat for Severe Thunderstorm Watch 24
continues.
SUMMARY...An isolated large hail and strong/gusty wind threat
continues across Severe Thunderstorm Watch 24.
DISCUSSION...A messy, cluster storm mode has developed across
northeastern OK into southeastern KS and southwestern/west-central
MO. This convection will likely remain elevated this morning to the
north of a surface boundary. Although storm mode is not overly
favorable, occasional marginally severe hail will remain possible
along an elevated instability gradient (MUCAPE 1000-2000 J/kg).
Isolated strong/gusty winds may also occur as individual cells
develop northeastward. Recently, additional convection has begun to
develop farther south into northeastern OK along a low-level warm
advection wing and where surface dewpoints are slightly higher
(generally mid to upper 50s). It remains to be seen whether storms
will be able to strengthen south of the ongoing band. If they do,
then all severe hazards, including a brief tornado, would be
possible.
..Gleason.. 03/17/2021
...Please see www.spc.noaa.gov for graphic product...
ATTN...WFO...SGF...EAX...TSA...ICT...
LAT...LON 36129643 36329670 37269575 38349479 38279395 37779407
37199459 36449551 36129643SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 16, 7:49 PM CDT | Severe Thunderstorm Watch | SPC | Cowley, Harper, Sumner | 7 hr |
| Mar 17, 12:45 AM CDT | Mesoscale Discussion | SPC | Allen, Anderson, Bourbon, Butler, Chase, Chautauqua and 21 more | 90 min |
| Mar 17, 1:54 AM CDT | Severe Thunderstorm Watch | SPC | Allen, Anderson, Bourbon, Butler, Chautauqua, Cherokee and 10 more | 6 hr |
| Mar 17, 4:38 AM CDT | Mesoscale Discussion | SPC | Morton, Stevens | 6 hr |
| Mar 17, 1:18 PM CDT | Mesoscale Discussion | SPC | Cherokee | 57 min |
| Mar 17, 8:51 AM CDT | Mesoscale Discussion | SPC | Audrain, Boone, Callaway, Camden, Christian, Cole and 35 more | 84 min |
| Mar 17, 2:00 PM CDT | Tornado Watch | SPC | Barry, Christian, Douglas, Greene, Lawrence, McDonald and 6 more | 7 hr |
| Mar 17, 3:37 PM CDT | Mesoscale Discussion | SPC | Barry, Christian, Douglas, Greene, Jasper, Lawrence and 5 more | 83 min |
| Mar 17, 1:32 AM CDT | Mesoscale Discussion | SPC | LeFlore, McCurtain | 118 min |
| Mar 17, 1:56 AM CDT | Mesoscale Discussion | SPC | Blaine, Custer, Garfield, Kay, Kingfisher, Logan and 3 more | 64 min |
| Mar 17, 4:04 AM CDT | Mesoscale Discussion | SPC | Bryan, Choctaw, McCurtain | 86 min |
| Mar 17, 4:37 AM CDT | Severe Thunderstorm Watch | SPC | Atoka, Bryan, Choctaw, McCurtain, Pushmataha | 5 hr |
| Mar 17, 6:40 AM CDT | Mesoscale Discussion | SPC | Choctaw, Latimer, LeFlore, McCurtain, Pushmataha | 95 min |
Nearby
Mesoscale Discussions in Kansas, 2021Mesoscale Discussions in Missouri, 2021Mesoscale Discussions in Oklahoma, 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.