Alert archive / Oklahoma / Mesoscale Discussions in 2003
Mesoscale Discussion 73
The Storm Prediction Center issued this mesoscale discussion at Feb 15, 2003, 3:15 AM CST for 4 states. It was in force for 60 min.
The area
The outline as issued.
The facts
- Issued
- Feb 15, 2003, 3:15 AM CST (09:15 UTC)
- Expired
- Feb 15, 2003, 4:15 AM CST
- In force
- 60 min
- Issued by
- the Storm Prediction Center
All 42 counties
Benton County, AR, Carroll County, AR, Crawford County, AR, Madison County, AR, Sebastian County, AR, Washington County, AR, Cherokee County, KS, Labette County, KS, Barry County, MO, Christian County, MO, Greene County, MO, Jasper County, MO, Lawrence County, MO, McDonald County, MO, Newton County, MO, Stone County, MO, Taney County, MO, Webster County, MO, Adair County, OK, Cherokee County, OK, Craig County, OK, Creek County, OK, Delaware County, OK, Haskell County, OK, Hughes County, OK, Latimer County, OK, LeFlore County, OK, Mayes County, OK, McIntosh County, OK, Muskogee County, OK, Nowata County, OK, Okfuskee County, OK, Okmulgee County, OK, Ottawa County, OK, Pittsburg County, OK, Pottawatomie County, OK, Rogers County, OK, Seminole County, OK, Sequoyah County, OK, Tulsa County, OK, Wagoner County, OK, Washington County, OK
The radar
The Tulsa radar (KINX), 63 km from the middle of the area, began a volume at 09:17 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 nearest sounding before it
Springfield, MO (KSGF), launched 00:00Z, 9.3 hours before the alert went out and 122 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
- 484 J/kg
- Mixed-layer CIN
- -127 J/kg
- Mixed-layer LCL
- 637 m above ground
- 0-6 km bulk shear
- 41 kt
- 0-1 km storm-relative helicity
- 241 m²/s²
- 0-3 km storm-relative helicity
- 284 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 1.1
The text
As transmitted, in the capitals the NWS used until 2016.
051 ACUS11 KWNS 150915 SWOMCD SPC MCD 150915 OKZ000-ARZ000-MOZ000-KSZ000-151015- MESOSCALE DISCUSSION 0073 NWS STORM PREDICTION CENTER NORMAN OK 0315 AM CST SAT FEB 15 2003 AREAS AFFECTED...NERN OK...SWRN MO...NWRN AR CONCERNING...SEVERE THUNDERSTORM WATCH 5... VALID 150915Z - 151015Z WEAK LINE OF THUNDERSTORMS ALONG COLD FRONT CONTINUES ITS PROGRESSION EWD ACROSS WW INTO SWRN PORTIONS OF MO AND NWRN AR. LATEST RADAR TRENDS SUGGEST THIS ACTIVITY IS STRUGGLING DUE TO MARGINAL INFLOW/WEAK LOW LEVEL CONVERGENCE. AS LLJ VEERS AND FOCUSES WELL DOWNSTREAM IT APPEARS THE ABILITY FOR UPDRAFTS TO MAINTAIN SUSTAINED INTENSITY IS DIMINISHING. ..DARROW.. 02/15/2003 ...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT... 37329400 37319245 36069345 34829444 34829594 34829744 36069649 37319554
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 14, 6:57 PM CST | Mesoscale Discussion | SPC | Little River | 2 hr |
| Feb 14, 7:37 PM CST | Mesoscale Discussion | SPC | Little River | 113 min |
| Feb 14, 11:09 PM CST | Mesoscale Discussion | SPC | Benton, Carroll, Crawford, Franklin, Madison, Sebastian and 1 more | 2 hr |
| Feb 14, 11:20 PM CST | Severe Thunderstorm Watch | SPC | Benton, Carroll, Crawford, Franklin, Madison, Sebastian and 1 more | 6 hr |
| Feb 15, 12:31 AM CST | Mesoscale Discussion | SPC | Benton, Carroll, Crawford, Franklin, Madison, Sebastian and 1 more | 119 min |
| Feb 14, 8:26 PM CST | Mesoscale Discussion | SPC | Allen, Anderson, Bourbon, Chautauqua, Cherokee, Coffey and 13 more | 2 hr |
Nearby
Mesoscale Discussions in Oklahoma, 2003Mesoscale Discussions in Missouri, 2003Mesoscale Discussions in Arkansas, 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.