Alert archive / Oklahoma / Mesoscale Discussions in 2020
Mesoscale Discussion 468
The Storm Prediction Center issued this mesoscale discussion at Apr 24, 2020, 1:07 PM CDT for 8 counties in Kansas; 15 counties in Oklahoma. It was in force for 113 min.
The area
The outline as issued.
The facts
- Issued
- Apr 24, 2020, 1:07 PM CDT (18:07 UTC)
- Expired
- Apr 24, 2020, 3:00 PM CDT
- In force
- 113 min
- Issued by
- the Storm Prediction Center
- Chance of a watch
- 40%
All 23 counties
Butler County, KS, Chautauqua County, KS, Cowley County, KS, Elk County, KS, Greenwood County, KS, Labette County, KS, Montgomery County, KS, Wilson County, KS, Cherokee County, OK, Craig County, OK, Creek County, OK, Delaware County, OK, Kay County, OK, Mayes County, OK, Nowata County, OK, Okmulgee County, OK, Osage County, OK, Ottawa County, OK, Pawnee County, OK, Rogers County, OK, Tulsa County, OK, Wagoner County, OK, Washington County, OK
The radar
The Tulsa radar (KINX), 71 km from the middle of the area, began a volume at 18:07 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
Norman, OK (KOUN), launched 12:00Z, 6.1 hours before the alert went out and 200 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
- 1934 m above ground
- 0-6 km bulk shear
- 41 kt
- 0-1 km storm-relative helicity
- 382 m²/s²
- 0-3 km storm-relative helicity
- 607 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.3
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 |
|---|---|---|---|---|
| Apr 24, 3:20 PM CDT | Mesoscale Discussion | SPC | Atoka, Bryan, Choctaw, Coal, Haskell, Hughes and 12 more | 115 min |
| Apr 24, 3:44 PM CDT | Severe Thunderstorm Watch | SPC | Adair, Atoka, Cherokee, Coal, Craig, Creek and 20 more | 6 hr |
| Apr 24, 4:49 PM CDT | Tornado Watch | SPC | Choctaw, McCurtain, Pushmataha | 7 hr |
| Apr 24, 6:40 PM CDT | Mesoscale Discussion | SPC | Adair, Cherokee, Delaware, Haskell, Latimer, LeFlore and 8 more | 2 hr |
Nearby
Mesoscale Discussions in Oklahoma, 2020Mesoscale Discussions in Kansas, 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.