
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0631 AM CST Sun Jan 11 2026 Valid 111300Z - 121200Z ...NO THUNDERSTORM AREAS FORECAST... ...SUMMARY... Thunderstorms are not expected today. ...NY/PA/WV... A deep, cold upper trough will be present today over the eastern US, with the trough axis and associated cold pool aloft moving across the upper OH Valley. Forecast soundings suggest that despite cold mid-level temperatures below -30C, weak/shallow CAPE profiles will preclude charge separation except on a very isolated basis. Elsewhere no thunderstorms are forecast today. ..Hart/Kerr.. 01/11/2026Read more

Day 4-8 Convective Outlook NWS Storm Prediction Center Norman OK 0346 AM CST Sun Jan 11 2026 Valid 141200Z - 191200Z ...DISCUSSION... A persistent large-scale upper-level trough is forecast to remain in the eastern U.S. during the Day 4 to 8 period. This pattern will be favorable for repeated cold air intrusions into the lower forty-eight states from mid to late week. Cold and dry surface high pressure will dominate across much of the nation, making conditions unfavorable for thunderstorm development.Read more

Day 3 Convective Outlook NWS Storm Prediction Center Norman OK 0229 AM CST Sun Jan 11 2026 Valid 131200Z - 141200Z ...NO THUNDERSTORM AREAS FORECAST... ...SUMMARY... Thunderstorms are not forecast to develop across the U.S. on Tuesday and Tuesday night. ...DISCUSSION... A large-scale upper-level trough will dig southeastward into the east-central U.S. on Tuesday, as an associated surface low deepens across the Great Lakes. In response, a cold front will move southeastward across the central U.S. This will reinforce cold and dry conditions over most of the nation. For this reason, thunderstorm development is not expected over the continental U.S. Tuesday and Tuesday night. ..Broyles.. 01/11/2026Read more