Alert archive / Oklahoma / Mesoscale Discussions in 2003

Mesoscale Discussion 1023

May 16, 200326 counties in Oklahoma

The Storm Prediction Center issued this mesoscale discussion at May 16, 2003, 11:35 AM CDT for 26 counties in Oklahoma. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued
May 16, 2003, 11:35 AM CDT (16:35 UTC)
Expired
May 16, 2003, 2:00 PM CDT
In force
2 hr
Issued by
the Storm Prediction Center
All 26 counties

Caddo County, OK, Canadian County, OK, Cleveland County, OK, Creek County, OK, Garfield County, OK, Grady County, OK, Hughes County, OK, Kingfisher County, OK, Lincoln County, OK, Logan County, OK, Mayes County, OK, McClain County, OK, McIntosh County, OK, Noble County, OK, Okfuskee County, OK, Oklahoma County, OK, Okmulgee County, OK, Osage County, OK, Pawnee County, OK, Payne County, OK, Pottawatomie County, OK, Rogers County, OK, Seminole County, OK, Tulsa County, OK, Wagoner County, OK, Washington County, OK

The radar

The Norman radar (KTLX), 88 km from the middle of the area, began a volume at 16:36 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, 4.6 hours before the alert went out and 105 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 12:00Z on 2003-05-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 75 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 12:00Z on 2003-05-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 299 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
75 J/kg
Mixed-layer CIN
-328 J/kg
Mixed-layer LCL
789 m above ground
0-6 km bulk shear
56 kt
0-1 km storm-relative helicity
299 m²/s²
0-3 km storm-relative helicity
204 m²/s²
Significant tornado parameter
0.0
Supercell composite
-0.1

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.

IssuedProductOfficeCountiesLasted
May 15, 8:38 PM CDTMesoscale DiscussionSPCCotton, Jackson, Jefferson, Stephens, Tillman2 hr
May 15, 10:25 PM CDTTornado WatchSPCCotton, Jackson, Jefferson, Stephens, Tillman6 hr
May 15, 10:30 PM CDTMesoscale DiscussionSPCAlfalfa, Beaver, Beckham, Blaine, Custer, Dewey and 8 more2 hr
May 15, 11:32 PM CDTMesoscale DiscussionSPCCimarron, Texas118 min
May 15, 11:35 PM CDTTornado WatchSPCAlfalfa, Beckham, Blaine, Caddo, Canadian, Comanche and 13 more4 hr
May 15, 11:49 PM CDTMesoscale DiscussionSPCCotton, Jackson, Jefferson, Stephens, Tillman86 min
May 16, 1:20 AM CDTTornado WatchSPCAtoka, Bryan, Carter, Choctaw, Cleveland, Coal and 33 more6 hr
May 16, 1:22 AM CDTMesoscale DiscussionSPCAlfalfa, Blaine, Caddo, Canadian, Cleveland, Custer and 16 more53 min
May 16, 2:33 AM CDTMesoscale DiscussionSPCAtoka, Bryan, Carter, Choctaw, Cleveland, Coal and 16 more57 min
May 16, 3:07 AM CDTMesoscale DiscussionSPCAtoka, Bryan, Carter, Choctaw, Cleveland, Coal and 33 more53 min
May 16, 4:04 AM CDTMesoscale DiscussionSPCAdair, Atoka, Bryan, Carter, Cherokee, Choctaw and 36 more56 min
May 16, 4:25 AM CDTSevere Thunderstorm WatchSPCAdair, Cherokee, Craig, Delaware, Haskell, LeFlore and 4 more5 hr
May 16, 5:22 AM CDTMesoscale DiscussionSPCAtoka, Bryan, Choctaw, Coal, Johnston, Latimer and 10 more53 min
May 16, 5:47 AM CDTMesoscale DiscussionSPCAdair, Cherokee, Delaware, Haskell, LeFlore, McCurtain and 2 more58 min
May 16, 6:35 AM CDTMesoscale DiscussionSPCAdair, Cherokee, Delaware, Haskell, LeFlore, McCurtain and 2 more25 min
May 16, 9:16 AM CDTMesoscale DiscussionSPCChoctaw, Latimer, McCurtain, Pushmataha119 min
May 16, 12:00 PM CDTTornado WatchSPCAdair, Canadian, Cherokee, Craig, Creek, Delaware and 23 more6 hr
May 16, 12:09 PM CDTMesoscale DiscussionSPCAtoka, Bryan, Choctaw, Haskell, Latimer, LeFlore and 3 more3 hr
May 16, 12:45 PM CDTTornado WatchSPCAtoka, Bryan, Choctaw, Coal, Haskell, Hughes and 10 more5 hr
May 16, 1:46 PM CDTMesoscale DiscussionSPCCherokee, Creek, Lincoln, Logan, McIntosh, Mayes and 12 more89 min
May 16, 3:18 PM CDTMesoscale DiscussionSPCLeFlore, McCurtain117 min
May 16, 3:55 PM CDTTornado WatchSPCAdair6 hr
May 16, 5:06 PM CDTMesoscale DiscussionSPCMcCurtain54 min
May 16, 5:45 PM CDTTornado WatchSPCMcCurtain6 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.