SPC 1300Z Day 1 Outlook

Day 1 Outlook Image

Day 1 Convective Outlook  
NWS Storm Prediction Center Norman OK
0651 AM CST Wed Feb 03 2021

Valid 031300Z - 041200Z

...NO SEVERE THUNDERSTORM AREAS FORECAST...

...SUMMARY...
Isolated thunderstorms may occur later this afternoon and evening
across western Colorado, eastern Utah, and vicinity.

...Synopsis...
A midlevel shortwave trough over OR this morning will move across
UT/CO later this afternoon/evening.  Pockets of daytime heating
beneath steep midlevel lapse rates could result in sufficient
buoyancy for low-topped convection with isolated lightning flashes,
in the zone of ascent preceding the midlevel trough/cold front. 
Given strong wind profiles and steep low-level lapse rates, isolated
strong outflow winds will be possible.  Otherwise, some weak
midlevel convection may occur overnight across the central Plains in
advance of the midlevel trough and within the lingering midlevel
moisture plume spreading eastward from the Rockies.  However, the
threat for lightning flashes appears too limited to warrant an
outlook area.

..Thompson.. 02/03/2021

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