SPC 0830Z Day 3 Outlook
Day 3 Convective Outlook NWS Storm Prediction Center Norman OK 0213 AM CST Thu Jan 28 2021 Valid 301200Z - 311200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Severe weather is not expected across the U.S. on Saturday. ...Discussion... A mid-level low/short-wave trough initially expected to be centered over the central/southern High Plains region, is forecast to move steadily east-northeastward through the period. The feature should reach the middle Mississippi Valley vicinity during the evening, and then continue into/across the Midwest/Ohio Valley region overnight. At the surface, an accompanying low is forecast to move across Oklahoma/Kansas and into Missouri by evening, and then reach the southern Illinois/southern Indiana area by Sunday morning. A trailing cold front will move southeastward across the southern Plains, and later across the Lower Mississippi Valley area and into the northwestern Gulf of Mexico. Showers will accompany the advance of the surface system, particularly during the second half of the period across the Tennessee Valley region and southward across the central Gulf Coast states. A few lightning flashes are expected nearer the pool of colder air/steep lapse rates aloft associated with the upper system as it shifts east-northeastward with time, within a zone from the Kansas/Oklahoma vicinity east-northeastward into Illinois. ..Goss.. 01/28/2021
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