Alert archive / Oklahoma / Mesoscale Discussions in 2003

Mesoscale Discussion 966

May 14, 200338 counties in Oklahoma

The Storm Prediction Center issued this mesoscale discussion at May 14, 2003, 1:34 AM CDT for 38 counties in Oklahoma. It was in force for 116 min.

The area

The outline as issued.

The facts

Issued
May 14, 2003, 1:34 AM CDT (06:34 UTC)
Expired
May 14, 2003, 3:30 AM CDT
In force
116 min
Issued by
the Storm Prediction Center
All 38 counties

Atoka County, OK, Blaine County, OK, Caddo County, OK, Canadian County, OK, Cleveland County, OK, Coal County, OK, Creek County, OK, Dewey County, OK, Garfield County, OK, Garvin County, OK, Grady County, OK, Haskell County, OK, Hughes County, OK, Johnston County, OK, Kingfisher County, OK, Latimer County, OK, Lincoln County, OK, Logan County, OK, Mayes County, OK, McClain County, OK, McIntosh County, OK, Murray County, OK, Muskogee County, OK, Noble County, OK, Okfuskee County, OK, Oklahoma County, OK, Okmulgee County, OK, Osage County, OK, Pawnee County, OK, Payne County, OK, Pittsburg County, OK, Pontotoc County, OK, Pottawatomie County, OK, Pushmataha County, OK, Rogers County, OK, Seminole County, OK, Tulsa County, OK, Wagoner County, OK

The radar

The Norman radar (KTLX), 20 km from the middle of the area, began a volume at 06:33 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 00:00Z, 6.6 hours before the alert went out and 30 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-pSkew-T log-p diagram, Norman, OK at 00:00Z on 2003-05-14Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3007 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Norman, OK at 00:00Z on 2003-05-14The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 192 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
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
3007 J/kg
Mixed-layer CIN
-31 J/kg
Mixed-layer LCL
995 m above ground
0-6 km bulk shear
57 kt
0-1 km storm-relative helicity
192 m²/s²
0-3 km storm-relative helicity
283 m²/s²
Significant tornado parameter
4.6
Supercell composite
17.9

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.

IssuedProductOfficeCountiesLasted
May 13, 9:58 PM CDTMesoscale DiscussionSPCAlfalfa, Blaine, Caddo, Canadian, Cleveland, Custer and 20 more3 hr
May 13, 10:20 PM CDTSevere Thunderstorm WatchSPCAlfalfa, Atoka, Beckham, Blaine, Caddo, Canadian and 39 more7 hr
May 14, 3:49 AM CDTMesoscale DiscussionSPCAtoka, Blaine, Bryan, Caddo, Canadian, Carter and 38 more116 min
May 14, 4:05 AM CDTSevere Thunderstorm WatchSPCAlfalfa, Blaine, Bryan, Caddo, Canadian, Carter and 23 more5 hr
May 14, 5:50 AM CDTMesoscale DiscussionSPCAtoka, Blaine, Bryan, Caddo, Canadian, Carter and 23 more115 min
May 14, 7:40 AM CDTMesoscale DiscussionSPCBeckham, Bryan, Carter, Comanche, Cotton, Custer and 11 more95 min
May 14, 10:55 AM CDTMesoscale DiscussionSPCBryan, Choctaw, Johnston, McCurtain, Marshall2 hr
May 14, 2:30 PM CDTTornado WatchSPCChoctaw, McCurtain, Pushmataha6 hr
May 14, 3:23 PM CDTMesoscale DiscussionSPCCotton, Jefferson, Love, Tillman2 hr
May 14, 4:52 PM CDTMesoscale DiscussionSPCAlfalfa, Garfield, Grant, Kay, Noble, Payne and 1 more113 min
May 14, 6:28 PM CDTMesoscale DiscussionSPCGreer, Harmon, Jackson2 hr

Nearby

Mesoscale Discussions in Oklahoma, 2003Every 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.