Alert archive / Kansas / Mesoscale Discussions in 2020
Mesoscale Discussion 657
The Storm Prediction Center issued this mesoscale discussion at May 21, 2020, 1:20 PM MDT for Prowers County, Colorado; 31 counties in Kansas; Beaver County, Texas County, Oklahoma. It was in force for 85 min.
The area
The outline as issued.
The facts
- Issued
- May 21, 2020, 1:20 PM MDT (19:20 UTC)
- Expired
- May 21, 2020, 2:45 PM MDT
- In force
- 85 min
- Issued by
- the Storm Prediction Center
- Concerning
- Severe potential...watch likely
- Chance of a watch
- 95%
All 34 counties
Prowers County, CO, Clark County, KS, Edwards County, KS, Ellis County, KS, Finney County, KS, Ford County, KS, Gove County, KS, Graham County, KS, Grant County, KS, Gray County, KS, Greeley County, KS, Hamilton County, KS, Haskell County, KS, Hodgeman County, KS, Kearny County, KS, Kiowa County, KS, Lane County, KS, Logan County, KS, Meade County, KS, Morton County, KS, Ness County, KS, Pawnee County, KS, Rush County, KS, Scott County, KS, Seward County, KS, Sheridan County, KS, Stanton County, KS, Stevens County, KS, Thomas County, KS, Trego County, KS, Wallace County, KS, Wichita County, KS, Beaver County, OK, Texas County, OK
The radar
The Dodge City radar (KDDC), 81 km from the middle of the area, began a volume at 19:20 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
Dodge City, (KDDC), launched 12:00Z, 7.3 hours before the alert went out and 86 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
- 275 J/kg
- Mixed-layer CIN
- -409 J/kg
- Mixed-layer LCL
- 690 m above ground
- 0-6 km bulk shear
- 9 kt
- 0-1 km storm-relative helicity
- -64 m²/s²
- 0-3 km storm-relative helicity
- 186 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.0
The text
As transmitted.
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</html>SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 20, 8:10 PM MDT | Mesoscale Discussion | SPC | Weld | 95 min |
| May 21, 2:15 PM MDT | Severe Thunderstorm Watch | SPC | Clark, Decatur, Finney, Ford, Gove, Graham and 24 more | 7 hr |
| May 21, 5:09 PM MDT | Mesoscale Discussion | SPC | Finney, Ford, Gove, Graham, Grant, Gray and 20 more | 96 min |
Nearby
Mesoscale Discussions in Kansas, 2020Mesoscale Discussions in Oklahoma, 2020Mesoscale Discussions in Colorado, 2020Every mesoscale discussion in 2020
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.