####018001788####
ACUS02 KWNS 031725

SWODY2

SPC AC 031724



Day 2 Convective Outlook  

NWS Storm Prediction Center Norman OK

1224 PM CDT Wed Apr 03 2024



Valid 041200Z - 051200Z



...NO SEVERE THUNDERSTORM AREAS FORECAST...



...SUMMARY...

No severe threat is expected across the continental U.S. on Thursday

and Thursday night.



...Discussion...

A highly amplified upper pattern will prevail across the U.S.

Thursday, with a pair of closed upper lows -- one over the West and

one over the East -- separated by a sharp central U.S. ridge.



With a cold front associated with the eastern system already

offshore, a cool airmass residing over the eastern half of the U.S.

in its wake, precludes appreciable potential for strong/severe

storms.  Still, with cold air/steep lapse rates through the middle

layer of the troposphere, daytime heating of the boundary layer will

result in diurnal development of low-topped convection across the

upper Ohio Valley/central Appalachians region.  Some small hail may

occur with the strongest cells, but should remain well below severe

limits.



Meanwhile in the West, a cold front associated with the western

upper system will advance across Idaho, the Great Basin, and

California.  Weak instability ahead of the boundary from western

Montana to northern Nevada will support convection and occasional

lightning flashes.  Meanwhile, post-frontal westerly upslope

low-level flow behind the front, combined with cold air/steep lapse

rates aloft associated with the upper low, will result in widespread

showery convection and occasional lightning, across portions of

California and possibly coastal Oregon.  In both of these areas,

severe weather is not expected.



..Goss.. 04/03/2024



$$