Valid 221630Z – 231200Z
…THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS EXTENDING IN A
CORRIDOR FROM OKLAHOMA NORTHEASTWARD INTO ILLINOIS…
…SUMMARY…
Isolated damaging winds, and perhaps a tornado or two, will be
possible through this evening from parts of Oklahoma to Illinois.
…OK to IL…
No changes have been made to the ongoing forecast. A band of
relatively fast winds aloft extends from the southern and central
Plains into the mid MS valley and Great Lakes region today. A
strong shortwave trough embedded in this flow over western KS/OK
will track into MO/IL during this forecast period. Considerable
cloud cover and areas of precipitation will continue to affect the
MRGL risk corridor this afternoon. Despite the weak instability and
poor lapse rates, forecast soundings show sufficient vertical shear
to pose a limited risk of a storm or two becoming intense with
damaging wind potential and some tornado risk.
..Hart/Bentley.. 09/22/2019
$$