Alert archive / Kansas / Mesoscale Discussions in 2021
Mesoscale Discussion 760
The Storm Prediction Center issued this mesoscale discussion at May 27, 2021, 12:51 AM CDT for 45 counties in Kansas; Barton County, Buchanan County, Platte County, Missouri. It was in force for 84 min.
The area
The outline as issued.
The facts
- Issued
- May 27, 2021, 12:51 AM CDT (05:51 UTC)
- Expired
- May 27, 2021, 2:15 AM CDT
- In force
- 84 min
- Issued by
- the Storm Prediction Center
- Concerning
- Severe thunderstorm watch 212
All 48 counties
Allen County, KS, Anderson County, KS, Atchison County, KS, Bourbon County, KS, Butler County, KS, Chase County, KS, Clay County, KS, Cloud County, KS, Coffey County, KS, Cowley County, KS, Crawford County, KS, Dickinson County, KS, Douglas County, KS, Elk County, KS, Franklin County, KS, Geary County, KS, Greenwood County, KS, Harvey County, KS, Jackson County, KS, Jefferson County, KS, Jewell County, KS, Johnson County, KS, Leavenworth County, KS, Lincoln County, KS, Linn County, KS, Lyon County, KS, Marion County, KS, Marshall County, KS, Miami County, KS, Mitchell County, KS, Morris County, KS, Neosho County, KS, Osage County, KS, Ottawa County, KS, Phillips County, KS, Pottawatomie County, KS, Riley County, KS, Saline County, KS, Shawnee County, KS, Smith County, KS, Wabaunsee County, KS, Washington County, KS, Wilson County, KS, Woodson County, KS, Wyandotte County, KS, Barton County, MO, Buchanan County, MO, Platte County, MO
The radar
The Topeka radar (KTWX), 72 km from the middle of the area, began a volume at 05:52 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
Topeka, KS (KTOP), launched 00:00Z, 5.9 hours before the alert went out and 114 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
- 328 J/kg
- Mixed-layer CIN
- -63 J/kg
- Mixed-layer LCL
- 2025 m above ground
- 0-6 km bulk shear
- 39 kt
- 0-1 km storm-relative helicity
- 24 m²/s²
- 0-3 km storm-relative helicity
- 76 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
851 ACUS11 KWNS 270551 SWOMCD SPC MCD 270551 MOZ000-KSZ000-270715- Mesoscale Discussion 0760 NWS Storm Prediction Center Norman OK 1251 AM CDT Thu May 27 2021 Areas affected...Central/Eastern KS...Far Western MO Concerning...Severe Thunderstorm Watch 212... Valid 270551Z - 270715Z The severe weather threat for Severe Thunderstorm Watch 212 continues. SUMMARY...Numerous strong to severe thunderstorms are ongoing across central and eastern KS. Severe threat attendant to these storms will likely continue for at least the next few hours into more of eastern KS and perhaps far western MO. DISCUSSION...Several somewhat separate clusters of thunderstorms are currently ongoing, sustained predominantly by a strong and moist low-level jet. Southernmost cluster near Wichita has recently shown a bit more forward propagation and KAAO measured a 60 kt at 0529Z. Radar presentation of the supercell in Morris continues to show the presence of a strong updraft. Northernmost areas of thunderstorms includes numerous supercells arranged in the east-west line just south of the central NE/KS border. Thus far, none of these storm clusters have shown significant signs of weakening. Buoyancy does decrease with eastern extent into MO, but the already organized character of these storms coupled with the strong low-level jet suggests the severe threat will likely persist across eastern KS. ..Mosier/Grams.. 05/27/2021 ...Please see www.spc.noaa.gov for graphic product... ATTN...WFO...SGF...EAX...TOP...ICT...GID... LAT...LON 38569757 39839949 39769459 37379431 37059728 38569757
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 26, 7:32 PM CDT | Mesoscale Discussion | SPC | Clark, Comanche, Kiowa | 88 min |
| May 26, 9:04 PM CDT | Mesoscale Discussion | SPC | Clay, Cloud, Decatur, Jewell, Lincoln, Mitchell and 8 more | 116 min |
| May 26, 11:26 PM CDT | Mesoscale Discussion | SPC | Butler, Chautauqua, Cowley, Elk, Harper, Montgomery and 2 more | 64 min |
| May 27, 1:05 AM CDT | Severe Thunderstorm Watch | SPC | Allen, Anderson, Atchison, Bourbon, Brown, Chase and 32 more | 7 hr |
| May 27, 2:17 AM CDT | Mesoscale Discussion | SPC | Atchison, Clay, Cloud, Geary, Jackson, Marshall and 7 more | 58 min |
| May 27, 5:28 AM CDT | Mesoscale Discussion | SPC | Anderson, Douglas, Franklin, Jefferson, Johnson, Leavenworth and 7 more | 92 min |
| May 27, 11:04 AM CDT | Mesoscale Discussion | SPC | Cherokee, Crawford, Labette, Montgomery | 86 min |
| May 27, 1:36 PM CDT | Mesoscale Discussion | SPC | Anderson, Atchison, Butler, Chase, Coffey, Douglas and 18 more | 54 min |
| May 27, 6:03 PM CDT | Mesoscale Discussion | SPC | Douglas, Franklin, Johnson, Leavenworth, Miami, Wyandotte | 87 min |
| May 27, 11:26 AM CDT | Severe Thunderstorm Watch | SPC | Barry, Barton, Bollinger, Camden, Cape Girardeau, Carter and 45 more | 8 hr |
| May 27, 12:57 PM CDT | Mesoscale Discussion | SPC | Barry, Christian, Crawford, Dallas, Dent, Franklin and 14 more | 93 min |
| May 27, 2:06 PM CDT | Mesoscale Discussion | SPC | Butler, Dunklin, Oregon, Ripley | 84 min |
| May 27, 2:20 PM CDT | Mesoscale Discussion | SPC | Barry, Bollinger, Butler, Cape Girardeau, Carter, Christian and 27 more | 85 min |
| May 27, 3:38 PM CDT | Mesoscale Discussion | SPC | Bollinger, Cape Girardeau, Carter, Madison, Oregon, Perry and 3 more | 67 min |
| May 27, 5:21 PM CDT | Mesoscale Discussion | SPC | Butler, Dunklin, Mississippi, New Madrid, Pemiscot, Scott and 1 more | 114 min |
Nearby
Mesoscale Discussions in Kansas, 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.