SPC AC 220448
Day 2 Convective Outlook
NWS Storm Prediction Center Norman OK
1148 PM CDT Wed Mar 21 2018
Valid 231200Z - 241200Z
...NO SEVERE THUNDERSTORM AREAS FORECAST...
A few general thunderstorms are expected Friday night centered over
the mid to lower Missouri Valley.
A shortwave trough will move from the Four Corners states toward the
lower MO Valley, with a surface low moving from KS into MO during
the evening. At the surface, a plume of 50s dewpoints will spread
northward toward the low, and up to a warm front which will be close
to I-70 from eastern KS into MO. The warm sector during the day
looks largely capped, although an isolated afternoon storm cannot be
ruled out over northeast KS on the northeast edge of the stronger
heating, with a conditional hail threat. Otherwise, strong low-level
warm advection will result in lift north of the warm front, with
scattered thunderstorms mainly Friday night from eastern NE across
MO and into parts of IL. Weak elevated instability may support small
To the west, a few weak storms are possible along the WA and OR
coast in association with an upper low just offshore.
NOTE: THE NEXT DAY 2 OUTLOOK IS SCHEDULED BY 1730Z