Alert archive / Oklahoma / Mesoscale Discussions in 2003
Mesoscale Discussion 2503
The Storm Prediction Center issued this mesoscale discussion at Nov 17, 2003, 10:59 AM CST for 42 counties in Oklahoma; 17 counties in Texas. It was in force for 91 min.
The area
The outline as issued.
The facts
- Issued
- Nov 17, 2003, 10:59 AM CST (16:59 UTC)
- Expired
- Nov 17, 2003, 12:30 PM CST
- In force
- 91 min
- Issued by
- the Storm Prediction Center
All 59 counties
Atoka County, OK, Bryan County, OK, Canadian County, OK, Carter County, OK, Cleveland County, OK, Coal County, OK, Comanche County, OK, Cotton County, OK, Craig County, OK, Creek County, OK, Delaware County, OK, Garvin County, OK, Grady County, OK, Hughes County, OK, Jefferson County, OK, Johnston County, OK, Lincoln County, OK, Logan County, OK, Love County, OK, Marshall County, OK, Mayes County, OK, McClain County, OK, McIntosh County, OK, Murray County, OK, Muskogee County, OK, Nowata County, OK, Okfuskee County, OK, Oklahoma 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, Rogers County, OK, Seminole County, OK, Stephens County, OK, Tulsa County, OK, Wagoner County, OK, Washington County, OK, Archer County, TX, Clay County, TX, Collin County, TX, Cooke County, TX, Dallas County, TX, Denton County, TX, Grayson County, TX, Jack County, TX, Montague County, TX, Palo Pinto County, TX, Parker County, TX, Shackelford County, TX, Stephens County, TX, Tarrant County, TX, Wichita County, TX, Wise County, TX, Young County, TX
The radar
The Norman radar (KTLX), 121 km from the middle of the area, began a volume at 17:01 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
Fort Sill, OK (KFSI), launched 12:00Z, 5.0 hours before the alert went out and 107 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.
- Mixed-layer CAPE
- 554 J/kg
- Mixed-layer CIN
- -75 J/kg
- Mixed-layer LCL
- 796 m above ground
- 0-6 km bulk shear
- 45 kt
- 0-1 km storm-relative helicity
- 169 m²/s²
- 0-3 km storm-relative helicity
- 152 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 2.0
The text
As transmitted, in the capitals the NWS used until 2016.
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</html>SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Nov 17, 1:11 AM CST | Mesoscale Discussion | SPC | Alfalfa, Beckham, Blaine, Caddo, Canadian, Comanche and 18 more | 3 hr |
| Nov 17, 6:42 AM CST | Mesoscale Discussion | SPC | Nowata, Osage, Washington | 3 hr |
| Nov 17, 7:43 AM CST | Mesoscale Discussion | SPC | Atoka, Bryan, Carter, Choctaw, Cleveland, Coal and 27 more | 3 hr |
| Nov 17, 8:15 AM CST | Tornado Watch | SPC | Atoka, Bryan, Canadian, Carter, Cleveland, Coal and 37 more | 5 hr |
| Nov 17, 12:20 PM CST | Tornado Watch | SPC | Atoka, Bryan, Carter, Choctaw, Cleveland, Coal and 18 more | 6 hr |
| Nov 17, 2:57 PM CST | Mesoscale Discussion | SPC | Atoka, Bryan, Choctaw, Coal, Haskell, Johnston and 6 more | 2 hr |
| Nov 17, 5:25 PM CST | Mesoscale Discussion | SPC | LeFlore, McCurtain | 65 min |
| Nov 16, 6:02 PM CST | Mesoscale Discussion | SPC | Armstrong, Briscoe, Childress, Cottle, Crosby, Dickens and 12 more | 118 min |
| Nov 17, 7:11 AM CST | Mesoscale Discussion | SPC | Anderson, Angelina, Austin, Brazos, Burleson, Cherokee and 40 more | 3 hr |
| Nov 17, 8:20 AM CST | Tornado Watch | SPC | Anderson, Angelina, Austin, Bastrop, Bell, Brazoria and 54 more | 5 hr |
| Nov 17, 9:58 AM CST | Mesoscale Discussion | SPC | Bandera, Bexar, Blanco, Brown, Burnet, Callahan and 36 more | 92 min |
| Nov 17, 10:21 AM CST | Mesoscale Discussion | SPC | Brazoria, Calhoun, Chambers, Fort Bend, Hardin, Harris and 6 more | 84 min |
| Nov 17, 11:50 AM CST | Mesoscale Discussion | SPC | Anderson, Angelina, Aransas, Austin, Bell, Bosque and 75 more | 85 min |
| Nov 17, 12:45 PM CST | Tornado Watch | SPC | Brazoria, Calhoun, Chambers, Colorado, DeWitt, Fort Bend and 15 more | 5 hr |
| Nov 17, 3:02 PM CST | Mesoscale Discussion | SPC | Austin, Brazoria, Calhoun, Chambers, Colorado, DeWitt and 16 more | 88 min |
| Nov 17, 5:07 PM CST | Mesoscale Discussion | SPC | Angelina, Brazoria, Calhoun, Chambers, Fort Bend, Galveston and 14 more | 53 min |
| Nov 17, 5:35 PM CST | Tornado Watch | SPC | Chambers, Galveston, Hardin, Jasper, Jefferson, Newton and 2 more | 6 hr |
Nearby
Mesoscale Discussions in Oklahoma, 2003Mesoscale Discussions in Texas, 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.