SPC 0100Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0632 PM CST Mon Nov 02 2020 Valid 030100Z - 031200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Weak thunderstorm activity may persist across parts of the southern Great Basin into the lower Colorado Valley tonight. ...01Z Outlook Update... It is possible that there could be some diurnal component to ongoing weak thunderstorm activity across the southern Great Basin. However, large-scale forcing for ascent (associated with weak warm advection beneath difluent and divergent upper flow), downstream of a broad, weak mid-level low migrating inland across southern California, appears the primary support. As elevated moist return flow (near/above the 700 mb level) continues in a corridor across the lower Colorado Valley into the southern Great Basin, this may persist while spreading slowly northward this evening. Overnight, the mid-level low may become increasingly deformed while taking a northeastward to eastward turn across the southern Sierra Nevada. But mid-level forcing for ascent associated with differential cyclonic vorticity advection might still support additional weak thunderstorm activity, southward into parts of the lower Colorado Valley. ..Kerr.. 11/03/2020
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