Alert archive / Oklahoma / Mesoscale Discussions in 2003

Mesoscale Discussion 1097

May 24, 200320 counties in Oklahoma

The Storm Prediction Center issued this mesoscale discussion at May 24, 2003, 9:24 AM CDT for 20 counties in Oklahoma. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued: May 24, 2003, 9:24 AM CDT (14:24 UTC)
Expired: May 24, 2003, 11:30 AM CDT
In force: 2 hr
Issued by: the Storm Prediction Center

Counties Atoka County, OK, Cherokee County, OK, Coal County, OK, Creek County, OK, Haskell County, OK, Hughes County, OK, Latimer County, OK, LeFlore County, OK, Lincoln County, OK, McIntosh County, OK, Muskogee County, OK, Okfuskee County, OK, Okmulgee County, OK, Pittsburg County, OK, Pottawatomie County, OK, Pushmataha County, OK, Seminole County, OK, Sequoyah County, OK, Tulsa County, OK, Wagoner County, OK

The radar

The Tulsa radar (KINX), 91 km from the middle of the area, began a volume at 14:28 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 425May 24, 9:30 AM CDT

The nearest sounding before it

Norman, OK (KOUN), launched 12:00Z, 2.4 hours before the alert went out and 135 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: 1150 J/kg
Mixed-layer CIN: -93 J/kg
Mixed-layer LCL: 839 m above ground
0-6 km bulk shear: 39 kt
0-1 km storm-relative helicity: 23 m²/s²
0-3 km storm-relative helicity: 89 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 1.1

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

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SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 23, 7:08 PM CDT	Mesoscale Discussion	SPC	Cimarron	67 min
May 24, 1:03 AM CDT	Mesoscale Discussion	SPC	Beaver, Beckham, Comanche, Custer, Dewey, Ellis and 10 more	117 min
May 24, 5:33 AM CDT	Mesoscale Discussion	SPC	Alfalfa, Blaine, Caddo, Canadian, Cleveland, Comanche and 18 more	117 min
May 24, 9:30 AM CDT	Severe Thunderstorm Watch	SPC	Atoka, Choctaw, Coal, Creek, Haskell, Hughes and 15 more	5 hr
May 24, 11:27 AM CDT	Mesoscale Discussion	SPC	Atoka, Choctaw, Haskell, Latimer, Pushmataha	93 min
May 24, 3:05 PM CDT	Severe Thunderstorm Watch	SPC	Cimarron	6 hr
May 24, 3:19 PM CDT	Mesoscale Discussion	SPC	Harmon	86 min
May 24, 5:39 PM CDT	Mesoscale Discussion	SPC	Beckham, Caddo, Comanche, Cotton, Custer, Dewey and 8 more	96 min
May 24, 5:57 PM CDT	Mesoscale Discussion	SPC	Cimarron	93 min

Nearby

Mesoscale Discussions in Oklahoma, 2003 Every mesoscale discussion in 2003

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.