Norman, OK Answer Key

Summary of the Event:

Date of Sounding: 9 May 2003 @ 00 UTC
A supercell moved across the Oklahoma City Metro area around 2130-2300 UTC, producing an F4 tornado. Although in terms of hail threat, this is just about as high each parameter listed above gets in the U.S. at the same time. However, this is essentially a null event in terms of hail. There was a lack of significant hail from that supercell. It passed directly over a metro area and there were just 4 hail reports, 2 at 0.75 and 2 at 0.88 inches. This is an example of storm microphysics playing an important role in hail production, as underreporting is unlikely in this event.


#16 Norman, Oklahoma
CAPE:	Begin crying: 4127 J/kg, some CIN
Deep Layer Shear:	Begin crying: ~55 knots shear 0-6 km, 95 knots at 9.5 km, strong veering profile.
Mid-level Lapse Rates:	Excellent: nearly dry adiabatic in the hail growth zone.
Freezing Level:	15.1 kft
Overall Threat of Severe Hail:	High: Much like the Nashville sounding, the ingredients are outstanding for severe hail, just about as high as you can get at the same time.
Summary of the Event: Date of Sounding: 9 May 2003 @ 00 UTC A supercell moved across the Oklahoma City Metro area around 2130-2300 UTC, producing an F4 tornado. Although in terms of hail threat, this is just about as high each parameter listed above gets in the U.S. at the same time. However, this is essentially a null event in terms of hail. There was a lack of significant hail from that supercell. It passed directly over a metro area and there were just 4 hail reports, 2 at 0.75 and 2 at 0.88 inches. This is an example of storm microphysics playing an important role in hail production, as underreporting is unlikely in this event.