Alert archive / Oklahoma / Mesoscale Discussions in 2003
Mesoscale Discussion 2437
The Storm Prediction Center issued this mesoscale discussion at Oct 8, 2003, 9:46 PM CDT for 29 counties in Oklahoma. It was in force for 59 min.
The area
The outline as issued.
The facts
- Issued
- Oct 8, 2003, 9:46 PM CDT (02:46 UTC)
- Expired
- Oct 8, 2003, 10:45 PM CDT
- In force
- 59 min
- Issued by
- the Storm Prediction Center
All 29 counties
Caddo County, OK, Canadian County, OK, Carter County, OK, Cleveland County, OK, Creek County, OK, Garvin County, OK, Grady County, OK, Hughes County, OK, Kay County, OK, Kingfisher County, OK, Lincoln County, OK, Logan 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, Pontotoc County, OK, Pottawatomie County, OK, Seminole County, OK, Stephens County, OK, Tulsa County, OK, Wagoner County, OK
The radar
The Norman radar (KTLX), 13 km from the middle of the area, began a volume at 02:49 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
Norman, OK (KOUN), launched 00:00Z, 2.8 hours before the alert went out and 20 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
- 194 J/kg
- Mixed-layer CIN
- -11 J/kg
- Mixed-layer LCL
- 1128 m above ground
- 0-6 km bulk shear
- 35 kt
- 0-1 km storm-relative helicity
- 74 m²/s²
- 0-3 km storm-relative helicity
- 166 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.6
The text
As transmitted, in the capitals the NWS used until 2016.
725 ACUS11 KWNS 090247 SWOMCD SPC MCD 090246 OKZ000-KSZ000-090345- MESOSCALE DISCUSSION 2437 NWS STORM PREDICTION CENTER NORMAN OK 0946 PM CDT WED OCT 08 2003 AREAS AFFECTED...CNTRL AND NRN OK/SRN KS CONCERNING...SEVERE THUNDERSTORM POTENTIAL VALID 090246Z - 090345Z MINI-SUPERCELL OVER FAR NRN OK HAS PERSISTED OVER THE LAST TWO HOURS. ADDITIONAL LOW-TOPPED SUPERCELL STORMS WILL BE POSSIBLE AND AN ISOLATED TORNADO THREAT MAY EXIST ACROSS CNTRL AND NRN OK INTO SRN KS. THE TORNADO THREAT SHOULD BE TOO MINIMAL FOR A WW ATTM. SHORTWAVE TROUGH EVIDENT ON WV IMAGERY OVER THE TX PANHANDLE WILL CONTINUE TO MOVE EWD RESULTING IN WIDESPREAD LIFT ACROSS OK AND KS. THIS WILL KEEP A LARGE AREA OF RAIN AND THUNDERSTORMS FROM NEAR TOPEKA KS SWWD TO LAWTON OK...SUSTAINED OVER THE NEXT FEW HOURS. 00Z SOUNDINGS FROM OUN AND FWD SHOW A MOIST TROPICAL-LIKE SOUNDING WITH A STRONG DIRECTIONAL SHEAR PROFILE. IN ADDITION...OBJECTIVE ANALYSIS SHOWS A MID-LEVEL JET LOCATED ACROSS NRN OK WHICH IS ENHANCING DEEP LAYER SHEAR TO ABOUT 40 KT. ALTHOUGH MARGINAL INSTABILITY IS IN PLACE...LCL AROUND 600 METERS AND 0-1 KM SHEAR AROUND 15 KT MAY BE ENOUGH FOR AN ISOLATED TORNADO IF LOW-TOPPED SUPERCELL STRUCTURED STORMS CAN ORGANIZE ALONG THE BACK EDGE OF THE RAIN SHIELD AS THE AREA OF RAIN MOVES EWD ACROSS CNTRL OK AND SCNTRL KS. ..BROYLES.. 10/09/2003 ...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT... ATTN...WFO...TSA...ICT...OUN... 35009900 37009700 36009500 34009700
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.