Alert archive / Kansas / Mesoscale Discussions in 2021
Mesoscale Discussion 730
The Storm Prediction Center issued this mesoscale discussion at May 24, 2021, 10:41 PM MDT for 4 counties in Kansas. It was in force for 94 min.
The area
The outline as issued.
The facts
- Issued
- May 24, 2021, 10:41 PM MDT (04:41 UTC)
- Expired
- May 25, 2021, 12:15 AM MDT
- In force
- 94 min
- Issued by
- the Storm Prediction Center
- Concerning
- Severe potential...watch unlikely
- Chance of a watch
- 20%
Counties Greeley County, KS, Sherman County, KS, Wallace County, KS, Wichita County, KS
The radar
The Goodland radar (KGLD), 49 km from the middle of the area, began a volume at 04:41 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
Denver, CO (KDNR), launched 00:00Z, 4.7 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
- 3201 m above ground
- 0-6 km bulk shear
- 62 kt
- 0-1 km storm-relative helicity
- 14 m²/s²
- 0-3 km storm-relative helicity
- 144 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
504
ACUS11 KWNS 250441
SWOMCD
SPC MCD 250441
KSZ000-COZ000-250615-
Mesoscale Discussion 0730
NWS Storm Prediction Center Norman OK
1141 PM CDT Mon May 24 2021
Areas affected...west through northwest KS through far eastern CO
Concerning...Severe potential...Watch unlikely
Valid 250441Z - 250615Z
Probability of Watch Issuance...20 percent
SUMMARY...Storms developing over western KS and far eastern CO may
become capable of producing a few instances of large hail. At this
time, a WW issuance will probably not be needed, but trends will
continue to be monitored.
DISCUSSION...An isolated storm has formed over western KS in Greeley
county, and additional storms will likely develop in association
with augmented isentropic ascent resulting from a strengthening
southerly low-level jet interacting with a stalled front. The
atmosphere in this region remains moderately unstable with 1500-2000
J/kg MUCAPE, 7-7.5 C/km mid-level lapse rates and 30-40 kt effective
bulk shear. This environment might support a few updrafts capable of
producing isolated large hail next few hours.
..Dial/Edwards.. 05/25/2021
...Please see www.spc.noaa.gov for graphic product...
ATTN...WFO...GLD...PUB...
LAT...LON 38440128 38390211 38960247 39520236 39600160 39170113
38440128SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 24, 6:33 PM MDT | Mesoscale Discussion | SPC | Barton, Ellis, Gove, Graham, Jewell, Lincoln and 9 more | 57 min |
| May 24, 7:07 PM MDT | Mesoscale Discussion | SPC | Finney, Grant, Gray, Hamilton, Haskell, Kearny and 4 more | 83 min |
| May 24, 9:46 PM MDT | Severe Thunderstorm Watch | SPC | Clark, Comanche, Finney, Ford, Grant, Gray and 4 more | 2 hr |
| May 25, 3:04 AM MDT | Mesoscale Discussion | SPC | Cheyenne, Decatur, Graham, Norton, Rawlins, Sheridan and 3 more | 116 min |
Nearby
Mesoscale Discussions in Kansas, 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.