Alert archive / Oklahoma / Mesoscale Discussions in 2022

Mesoscale Discussion 441

April 10, 202216 counties in Oklahoma

The Storm Prediction Center issued this mesoscale discussion at Apr 10, 2022, 8:16 PM CDT for 16 counties in Oklahoma. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued: Apr 10, 2022, 8:16 PM CDT (01:16 UTC)
Expired: Apr 10, 2022, 10:45 PM CDT
In force: 2 hr
Issued by: the Storm Prediction Center
Concerning: Severe potential...watch likely
Chance of a watch: 80%

Counties Blaine County, OK, Craig County, OK, Creek County, OK, Garfield County, OK, Kay County, OK, Kingfisher County, OK, Logan County, OK, Mayes County, OK, Noble County, OK, Nowata County, OK, Osage County, OK, Pawnee County, OK, Payne County, OK, Rogers County, OK, Tulsa County, OK, Washington County, OK

The radar

The Vance AFB radar (KVNX), 104 km from the middle of the area, began a volume at 01:22 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.

Severe Thunderstorm Watch 106Apr 10, 10:10 PM CDT

The nearest sounding before it

Norman, OK (KOUN), launched 00:00Z, 1.3 hours before the alert went out and 143 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 912 J/kg
Mixed-layer CIN: -111 J/kg
Mixed-layer LCL: 2150 m above ground
0-6 km bulk shear: 51 kt
0-1 km storm-relative helicity: 182 m²/s²
0-3 km storm-relative helicity: 273 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.9

Open this sounding in Storm Lab

The text

As transmitted.

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SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 10, 10:06 PM CDT	Severe Thunderstorm Watch	SPC	Craig, Creek, Delaware, Garfield, Kay, Kingfisher and 13 more	6 hr
Apr 10, 11:26 PM CDT	Mesoscale Discussion	SPC	Craig, Garfield, Grant, Kay, Kingfisher, Logan and 8 more	2 hr
Apr 11, 1:28 AM CDT	Mesoscale Discussion	SPC	Delaware	92 min
Apr 11, 12:43 PM CDT	Mesoscale Discussion	SPC	Adair, Cherokee, Craig, Delaware, Mayes, Ottawa and 1 more	2 hr
Apr 11, 2:34 PM CDT	Mesoscale Discussion	SPC	Bryan, Choctaw, Latimer, LeFlore, McCurtain, Pushmataha	116 min
Apr 11, 3:31 PM CDT	Tornado Watch	SPC	Choctaw, Haskell, Latimer, LeFlore, McCurtain, Pittsburg and 2 more	7 hr
Apr 11, 4:46 PM CDT	Mesoscale Discussion	SPC	Atoka, Bryan, Choctaw, Johnston, Marshall, Pushmataha	89 min
Apr 11, 5:18 PM CDT	Severe Thunderstorm Watch	SPC	Atoka, Bryan, Coal, Johnston, Marshall	4 hr
Apr 11, 6:46 PM CDT	Mesoscale Discussion	SPC	Atoka, Bryan, Choctaw, Coal, Latimer, LeFlore and 3 more	89 min

Nearby

Mesoscale Discussions in Oklahoma, 2022 Every mesoscale discussion in 2022

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.