SPC 0100Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0638 PM CST Tue Nov 03 2020 Valid 040100Z - 041200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Aside from parts of the Colorado Plateau, the risk for thunderstorms appears negligible across much of the U.S. tonight. ...01Z Outlook Update... With the onset of boundary-layer cooling, weak thunderstorm activity has become increasingly limited to a couple of lingering storms north of the Grand Canyon area into the southern Wasatch Mountains. This is near a remnant mid-level cyclonic vorticity center, which will continue eastward across the Colorado Plateau vicinity overnight. Although elevated moisture return is becoming cut off, it is possible that weak conditional instability associated with remnant moisture could continue to support additional thunderstorm development, aided by the dynamic forcing for ascent. However, thunderstorm probabilities may be increasingly near the minimum threshold (10 percent) for a categorical thunder area, and seem likely to become increasingly negligible through the overnight hours. ..Kerr.. 11/04/2020
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