SPC 0700Z Day 2 Outlook

Day 2 Convective Outlook  
NWS Storm Prediction Center Norman OK
1131 PM CST Thu Jan 07 2021

Valid 091200Z - 101200Z

...NO SEVERE THUNDERSTORM AREAS FORECAST...

...SUMMARY...
A few thunderstorms are possible late Saturday night over parts of
central Texas, with isolated lightning flashes possible over coastal
Oregon as well. Severe weather is not expected.

...Synopsis...
A shortwave trough will move southeast across the Four Corners and
into northwest TX by Sunday morning, with a cyclonically curved jet
max nosing into west TX by 00Z. Strong height falls will occur over
much of TX overnight, increasing lift.

Very little boundary-layer moisture return will occur ahead of this
system due to a surface ridge over the Gulf of Mexico, but forecast
soundings do yield minimal elevated MUCAPE as a southerly low-level
jet increases moisture advection aloft. Isolated, non-severe
thunderstorms are expected after 09Z over parts of central TX, but
weak instability will limit severe potential.

Elsewhere, cold temperatures aloft with an upper trough will affect
western WA and OR into Sunday morning, with perhaps a few lightning
flashes near the coast as a front approaches.

..Jewell.. 01/08/2021

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