SPC 0830Z Day 3 Outlook

Day 3 Outlook Image

Day 3 Convective Outlook  
NWS Storm Prediction Center Norman OK
0134 AM CST Tue Dec 08 2020

Valid 101200Z - 111200Z

...NO THUNDERSTORM AREAS FORECAST...

...SUMMARY...
Thunderstorms are not expected on Thursday.

...Synopsis...

The upper low over the lower CO Valley/northwest Mexico early
Thursday will progress eastward, becoming an open wave, to the
western portions of the central/southern Plains by 12z Friday.
Strong southwesterly deep layer flow will overspread the southern
Rockies and adjacent Plains, with strong height falls resulting in
surface low development over OK/TX during the afternoon and evening.
As this occurs, southerly low level return flow across the western
Gulf will transport modest moisture northward across southern and
eastern TX into the Ark-La-Tex vicinity late in the period. Showers
are expected across parts of AZ/NM during the day and despite strong
ascent associated with the progressive upper trough, meager
instability should preclude thunderstorm activity. During the
overnight hours toward early Friday morning, the warm advection
occurring over eastern TX may also result in showers, however,
thunderstorm chances before the end of the forecast period appear
low.

..Leitman.. 12/08/2020

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