Alert archive / Kansas / Mesoscale Discussions in 2021
Mesoscale Discussion 727
The Storm Prediction Center issued this mesoscale discussion at May 24, 2021, 7:33 PM CDT for 15 counties in Kansas; Franklin County, Harlan County, Webster County, Nebraska. It was in force for 57 min.
The area
The outline as issued.
The facts
- Issued
- May 24, 2021, 7:33 PM CDT (00:33 UTC)
- Expired
- May 24, 2021, 8:30 PM CDT
- In force
- 57 min
- Issued by
- the Storm Prediction Center
- Concerning
- Severe potential...watch possible
- Chance of a watch
- 60%
Counties Barton County, KS, Ellis County, KS, Gove County, KS, Graham County, KS, Jewell County, KS, Lincoln County, KS, Mitchell County, KS, Ness County, KS, Osborne County, KS, Phillips County, KS, Rooks County, KS, Rush County, KS, Russell County, KS, Smith County, KS, Trego County, KS, Franklin County, NE, Harlan County, NE, Webster County, NE
The radar
The Grand Island radar (KUEX), 125 km from the middle of the area, began a volume at 00:33 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
Dodge City, (KDDC), launched 00:00Z, 0.6 hours before the alert went out and 188 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
- 520 J/kg
- Mixed-layer CIN
- -135 J/kg
- Mixed-layer LCL
- 1195 m above ground
- 0-6 km bulk shear
- 25 kt
- 0-1 km storm-relative helicity
- 49 m²/s²
- 0-3 km storm-relative helicity
- 69 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.4
The text
As transmitted.
583
ACUS11 KWNS 250033
SWOMCD
SPC MCD 250033
NEZ000-KSZ000-250130-
Mesoscale Discussion 0727
NWS Storm Prediction Center Norman OK
0733 PM CDT Mon May 24 2021
Areas affected...Parts of central Kansas to extreme southern
Nebraska
Concerning...Severe potential...Watch possible
Valid 250033Z - 250130Z
Probability of Watch Issuance...60 percent
SUMMARY...Storms are moving out of WW 200 with some potential for
further development to the east this evening. There does remain some
uncertainty with regard to storm coverage, but a WW may be needed in
the next hour.
DISCUSSION...With convection now moving towards the edge of Tornado
Watch 200, a downstream WW may be needed in the next hour. The
strongest storm currently is in Trego County moving east. There is
at least some possibility that additional development may occur as
the low-level jet increases modestly this evening across central
Kansas. Shear becomes weaker with eastward extent and upper-level
support is also relatively weak. Should storms persist/develop,
large hail and damaging wind gusts would be the primary threats.
..Wendt/Edwards.. 05/25/2021
...Please see www.spc.noaa.gov for graphic product...
ATTN...WFO...ICT...GID...DDC...GLD...
LAT...LON 38840075 39919978 40169954 40409927 40319850 40279817
39709801 38939806 38439856 38319928 38389997 38840075SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 24, 8:07 PM CDT | Mesoscale Discussion | SPC | Finney, Grant, Gray, Hamilton, Haskell, Kearny and 4 more | 83 min |
| May 24, 10:46 PM CDT | Severe Thunderstorm Watch | SPC | Clark, Comanche, Finney, Ford, Grant, Gray and 4 more | 2 hr |
| May 24, 11:41 PM CDT | Mesoscale Discussion | SPC | Greeley, Sherman, Wallace, Wichita | 94 min |
| May 25, 4:04 AM CDT | Mesoscale Discussion | SPC | Cheyenne, Decatur, Graham, Norton, Rawlins, Sheridan and 3 more | 116 min |
Nearby
Mesoscale Discussions in Kansas, 2021Mesoscale Discussions in Nebraska, 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.