Alert archive / Arkansas / Mesoscale Discussions in 2020

Mesoscale Discussion 732

May 25, 20206 counties in Arkansas; Barry County, McDonald County, Newton County, Missouri; Craig County, Delaware County, Ottawa County, Oklahoma

The Storm Prediction Center issued this mesoscale discussion at May 25, 2020, 8:21 PM CDT for 6 counties in Arkansas; Barry County, McDonald County, Newton County, Missouri; Craig County, Delaware County, Ottawa County, Oklahoma. It was in force for 114 min.

The area

The outline as issued.

The facts

Issued: May 25, 2020, 8:21 PM CDT (01:21 UTC)
Expired: May 25, 2020, 10:15 PM CDT
In force: 114 min
Issued by: the Storm Prediction Center
Concerning: Tornado watch 226

Counties Benton County, AR, Carroll County, AR, Johnson County, AR, Madison County, AR, Newton County, AR, Pope County, AR, Barry County, MO, McDonald County, MO, Newton County, MO, Craig County, OK, Delaware County, OK, Ottawa County, OK

The radar

The Tulsa radar (KINX), 113 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 228May 25, 8:35 PM CDT

The nearest sounding before it

Springfield, MO (KSGF), launched 00:00Z, 1.4 hours before the alert went out and 76 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: 211 J/kg
Mixed-layer CIN: -63 J/kg
Mixed-layer LCL: 1234 m above ground
0-6 km bulk shear: 34 kt
0-1 km storm-relative helicity: 80 m²/s²
0-3 km storm-relative helicity: 86 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

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
May 25, 8:36 PM CDT	Severe Thunderstorm Watch	SPC	Barry, Barton, Cedar, Dade, Jasper, Lawrence and 3 more	3 hr
May 25, 10:36 PM CDT	Mesoscale Discussion	SPC	Barry, Barton, Cedar, Dade, Jasper, Lawrence and 3 more	54 min
May 26, 12:29 PM CDT	Mesoscale Discussion	SPC	Adair, Caldwell, Daviess, Gentry, Grundy, Harrison and 7 more	2 hr

Nearby

Mesoscale Discussions in Arkansas, 2020 Mesoscale Discussions in Missouri, 2020 Mesoscale Discussions in Oklahoma, 2020 Every 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.