MD 0769 CONCERNING TORNADO WATCH 213… FOR A SMALL PORTION OF CENTRAL OK
Mesoscale Discussion 0769
NWS Storm Prediction Center Norman OK
0841 PM CDT Thu May 11 2023
Areas affected...a small portion of central OK
Concerning...Tornado Watch 213...
Valid 120141Z - 120315Z
The severe weather threat for Tornado Watch 213 continues.
SUMMARY...A slight increase in 0-1km SRH has been observed during
the past hour. The tornado risk continues.
DISCUSSION...A cluster of supercells continues to straddle the I-35
and I-44 corridors south of OKC. The 00 UTC Norman, OK raob showed
a very unstable airmass (2900 J/kg MLCAPE) with around 40 kt
effective shear---supporting supercells capable of tornadoes. Very
moist low level conditions (surface dewpoints around 70 deg F) with
some slight increase in low-level SRH (200 m2/s2 0-1km SRH per
observed storm motions) will continue to support supercell
tornadogenesis for the next hour or two.
..Smith.. 05/12/2023
...Please see www.spc.noaa.gov for graphic product...
ATTN...WFO...OUN...
LAT...LON 34879798 35349746 35379731 35259723 35039730 34879770
34829783 34879798
