SPC 0100Z Day 1 Outlook

Day 1 Outlook Image

Day 1 Convective Outlook  
NWS Storm Prediction Center Norman OK
0640 PM CST Mon Jan 04 2021

Valid 050100Z - 051200Z

...NO SEVERE THUNDERSTORM AREAS FORECAST...

...SUMMARY...
Severe thunderstorms are not expected tonight.

...Northern Great Basin...

Strong short-wave trough has moved inland and currently extends from
western OR into northeast CA. This feature will spread across the
Great Basin tonight which will result in a surface front surging
into eastern ID/northern UT/central NV after 06z. Deep convection,
with some lightning, has been noted ahead of this feature over
northern CA over the last few hours. However, deeper convection is
now developing downstream, east of the Sierra Nevada, in association
with large-scale forcing. It appears isolated thunderstorms may
spread farther inland than earlier anticipated, so 10 percent
thunder line will be adjusted to account for this evolution.

..Darrow.. 01/05/2021

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