JPWX
Member
SPC:
The deep, but perhaps weakening cyclone, is then forecast to migrate
through the lower Missouri Valley into Upper Midwest on Monday, but
the primary severe weather potential seems likely to shift into the
lower Mississippi Valley late Monday into Monday night. This is
where forcing near a secondary frontal wave, as a trailing mid-level
short wave emerges from the Southwest, may interact with better
low-level moisture return from the Gulf of Mexico and support
renewed vigorous thunderstorm development. By Monday evening, if
not earlier, this probably will again include a risk for supercells,
and a developing squall line, which may maintain strength through
the evening before weakening overnight.
The deep, but perhaps weakening cyclone, is then forecast to migrate
through the lower Missouri Valley into Upper Midwest on Monday, but
the primary severe weather potential seems likely to shift into the
lower Mississippi Valley late Monday into Monday night. This is
where forcing near a secondary frontal wave, as a trailing mid-level
short wave emerges from the Southwest, may interact with better
low-level moisture return from the Gulf of Mexico and support
renewed vigorous thunderstorm development. By Monday evening, if
not earlier, this probably will again include a risk for supercells,
and a developing squall line, which may maintain strength through
the evening before weakening overnight.