Alert archive / Oklahoma / Mesoscale Discussions in 2003

Mesoscale Discussion 727

May 4, 20037 counties in Kansas; 33 counties in Oklahoma

The Storm Prediction Center issued this mesoscale discussion at May 4, 2003, 11:44 AM CDT for 7 counties in Kansas; 33 counties in Oklahoma. It was in force for 3 hr.

The area

The outline as issued.

The facts

Issued
May 4, 2003, 11:44 AM CDT (16:44 UTC)
Expired
May 4, 2003, 2:45 PM CDT
In force
3 hr
Issued by
the Storm Prediction Center
All 40 counties

Chautauqua County, KS, Cherokee County, KS, Crawford County, KS, Labette County, KS, Montgomery County, KS, Neosho County, KS, Wilson County, KS, Atoka County, OK, Bryan County, OK, Cherokee County, OK, Coal County, OK, Craig County, OK, Creek County, OK, Delaware County, OK, Haskell County, OK, Hughes County, OK, Johnston County, OK, Latimer County, OK, Lincoln County, OK, Marshall County, OK, Mayes County, OK, McIntosh County, OK, Murray County, OK, Muskogee County, OK, Nowata County, OK, Okfuskee County, OK, Okmulgee County, OK, Osage County, OK, Ottawa 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, Washington County, OK

The radar

The Tulsa radar (KINX), 70 km from the middle of the area, began a volume at 16:46 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, 4.7 hours before the alert went out and 127 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 2003-05-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1741 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 2003-05-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 341 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
1741 J/kg
Mixed-layer CIN
-124 J/kg
Mixed-layer LCL
724 m above ground
0-6 km bulk shear
54 kt
0-1 km storm-relative helicity
341 m²/s²
0-3 km storm-relative helicity
365 m²/s²
Significant tornado parameter
2.2
Supercell composite
31.3

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 3, 11:07 PM CDTMesoscale DiscussionSPCBarber, Barton, Butler, Chase, Clark, Clay and 43 more83 min
May 3, 11:46 PM CDTMesoscale DiscussionSPCAllen, Anderson, Atchison, Bourbon, Brown, Clay and 30 more59 min
May 4, 12:10 AM CDTSevere Thunderstorm WatchSPCAnderson, Atchison, Brown, Chase, Clay, Coffey and 24 more6 hr
May 4, 2:58 AM CDTMesoscale DiscussionSPCAnderson, Atchison, Brown, Coffey, Doniphan, Douglas and 13 more92 min
May 4, 4:50 AM CDTSevere Thunderstorm WatchSPCDoniphan, Wyandotte6 hr
May 4, 7:43 AM CDTMesoscale DiscussionSPCDoniphan2 hr
May 4, 10:19 AM CDTMesoscale DiscussionSPCAtchison, Butler, Chase, Clay, Coffey, Dickinson and 19 more116 min
May 4, 11:40 AM CDTTornado WatchSPCAnderson, Chase, Clay, Cloud, Coffey, Dickinson and 19 more6 hr
May 4, 12:14 PM CDTMesoscale DiscussionSPCAtchison, Brown, Doniphan, Douglas, Jackson, Jefferson and 7 more2 hr
May 4, 12:35 PM CDTTornado WatchSPCAllen, Bourbon, Chautauqua, Cherokee, Crawford, Elk and 6 more6 hr
May 4, 12:45 PM CDTTornado WatchSPCAtchison, Brown, Doniphan, Douglas, Jefferson, Johnson and 4 more6 hr
May 4, 2:22 PM CDTMesoscale DiscussionSPCAnderson, Atchison, Brown, Coffey, Doniphan, Douglas and 13 more113 min
May 4, 2:58 PM CDTMesoscale DiscussionSPCEllis, Gove, Jewell, Lane, Lincoln, Mitchell and 9 more92 min
May 4, 3:05 PM CDTMesoscale DiscussionSPCAllen, Bourbon, Cherokee, Crawford, Labette, Montgomery and 1 more115 min
May 4, 4:28 PM CDTMesoscale DiscussionSPCWyandotte62 min
May 4, 4:43 PM CDTMesoscale DiscussionSPCBourbon, Cherokee, Crawford, Labette, Linn, Neosho2 hr
May 4, 6:05 PM CDTTornado WatchSPCBourbon, Cherokee, Crawford7 hr
May 4, 6:20 PM CDTTornado WatchSPCDoniphan, Wyandotte6 hr
May 3, 8:05 PM CDTTornado WatchSPCBeckham, Blaine, Caddo, Canadian, Comanche, Cotton and 14 more6 hr
May 3, 10:00 PM CDTMesoscale DiscussionSPCBeckham, Blaine, Caddo, Canadian, Comanche, Cotton and 12 more2 hr
May 4, 2:16 PM CDTMesoscale DiscussionSPCBryan, Johnston, Love, Marshall, Murray119 min
May 4, 3:00 PM CDTTornado WatchSPCAtoka, Bryan, Carter, Choctaw, Coal, Garvin and 6 more6 hr
May 4, 5:20 PM CDTMesoscale DiscussionSPCAdair, Cherokee, Delaware, Haskell, LeFlore, Ottawa and 1 more55 min
May 4, 6:28 PM CDTMesoscale DiscussionSPCAtoka, Bryan, Carter, Choctaw, Coal, Johnston and 5 more2 hr

Nearby

Mesoscale Discussions in Oklahoma, 2003Mesoscale Discussions in Kansas, 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.