SPC AC 031730
Day 2 Convective Outlook
NWS Storm Prediction Center Norman OK
1130 AM CST Thu Mar 03 2022
Valid 041200Z - 051200Z
...NO SEVERE THUNDERSTORM AREAS FORECAST...
...SUMMARY...
A few thunderstorms are possible Friday into Friday night over parts
of Utah and Colorado, with a few lingering showers over southern
California Friday morning. Severe storms are not expected.
...Discussion...
As cyclonic flow over the eastern U.S. -- surrounding an eastern
Canada cyclone -- continues to shift eastward, ridging will spread
eastward in its wake. The amplification of ridging/anticyclonic
flow across the central and eastern U.S. Saturday will occur
downstream of a complex trough evolving with time over the western
states. By the end of the period, a highly amplified flow field
will have evolved, with cyclonic flow encompassing the western half
of the country, and downstream ridging across the East.
At the surface, broad/ill-defined low pressure will reside over the
Intermountain West, gradually consolidating with time in the
vicinity of the central High Plains as a short-wave feature aloft
crosses the Desert Southwest/southern Rockies. A cold front
accompanying the evolving low should reach western portions of
Kansas/Texas/Oklahoma Sunday morning, with a warm front shifting
northward across eastern portions of the Plains, and the Mississippi
and Ohio Valleys through the period.
Despite an increase in theta-e advection with time across the
central U.S. ahead of the aforementioned system, appreciable
destabilization is not anticipated, largely precluding thunder
potential. At this time, it appears that 10% thunder coverage will
remain confined to areas over the West, where cold air aloft/steep
lapse rates support sufficient instability for low-topped
convection.
..Goss.. 03/03/2022
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