SPC 0830Z Day 3 Outlook

Day 3 Convective Outlook  
NWS Storm Prediction Center Norman OK
0148 AM CST Tue Jan 26 2021

Valid 281200Z - 291200Z

...NO THUNDERSTORM AREAS FORECAST...

...SUMMARY...
Severe weather is not expected across the U.S. Thursday.

...Discussion...
The upper pattern over the U.S. will continue to feature troughs
near both the East and West Coasts, and a broad area of anticyclonic
flow covering central portions of the country.  Some evolution with
respect to the eastern trough is expected, as one shorter-wavelength
feature shifts into the western Atlantic, and is replaced by a low
advancing southeastward out of Canada and into the Northeast. 
Meanwhile, the more steady-state western trough will make very slow
eastward progress toward the West Coast.

At the surface, high pressure will prevail east of the Rockies, with
ridging/continental air spreading southward across nearly the entire
Gulf of Mexico.  In the West, a weak Pacific front will move
gradually onshore, in advance of the aforementioned upper system.

Showers are expected over the West Coast area through much of the
period, as the trough aloft slowly advances.  Although an
occasional/isolated lightning flash may occur inland within the
broader area of weak/low-topped convection, coverage is currently
expected to remain too sparse to warrant inclusion of a 10% thunder
area.

..Goss.. 01/26/2021

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