SPC 1630Z Day 1 Outlook
Day 1 Convective Outlook
NWS Storm Prediction Center Norman OK
1012 AM CST Mon Feb 14 2022
Valid 141630Z - 151200Z
...NO SEVERE THUNDERSTORM AREAS FORECAST...
...SUMMARY...
Isolated thunderstorms are possible from western Oregon towards
northeast California and northwest Nevada through tonight.
...OR/northeast CA/northwest NV...
A vigorous shortwave trough near the WA coast will dig south into
northern CA by 12Z. Substantial steepening of low to mid-level lapse
rates will occur as the mid-level cold pool (-30 to -35 C at 500 mb)
approaches. This should support meager surface-based buoyancy amid
40s surface dew points, mainly along and west of the Cascades across
western OR. A few lower-topped showers might sufficiently deepen for
sporadic lightning flashes later this afternoon into this evening in
the zone of ascent immediately preceding the shortwave trough.
Low-end thunder potential may linger tonight as the marginally
supportive environment spreads towards the OR/CA/NV border.
..Grams/Squitieri.. 02/14/2022
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