Day 4-8 Outlook Day 4-8 Convective Outlook NWS Storm Prediction Center Norman OK 0338 AM CDT Tue Jun 09 2026 Valid 121200Z – 171200Z …DISCUSSION… …Day 4/Friday… The last several deterministic model runs have consistently shown the progression of a short-wave trough and associated 50 kt jet streak from the OH Valley into the St. Lawrence Valley, with meaningful height falls as far south as the Mid-Atlantic. At the surface, the northern portion of a cold front initially from southwest Ontario to near the confluence of the MS and OH Rivers and into the southern Plains will progress southeast and […]
SPC 0730Z Day 3 Outlook Day 3 Convective Outlook NWS Storm Prediction Center Norman OK 0226 AM CDT Tue Jun 09 2026 Valid 111200Z – 121200Z …THERE IS AN ENHANCED RISK OF SEVERE THUNDERSTORMS FROM NORTHEAST MISSOURI THROUGH EASTERN IOWA…NORTHERN AND CENTRAL ILLINOIS AND SOUTHERN WISCONSIN INTO WESTERN LOWER MICHIGAN… …SUMMARY… Scattered to numerous severe storms capable of potentially strong tornadoes, large hail, and destructive winds appear likely from portions of the lower Missouri and mid Mississippi Valleys into the upper Great Lakes. More sporadic occurrences of damaging wind and large hail are possible across the southern Plains, upper Ohio […]
SPC 0600Z Day 2 Outlook Day 2 Convective Outlook NWS Storm Prediction Center Norman OK 1240 AM CDT Tue Jun 09 2026 Valid 101200Z – 111200Z …THERE IS AN ENHANCED RISK OF SEVERE THUNDERSTORMS OVER EASTERN MINNESOTA…MUCH OF WISCONSIN…CENTRAL AND EASTERN IOWA…AND NORTHWEST ILLINOIS… …SUMMARY… Scattered to numerous severe thunderstorms capable of large hail in excess of two inches in diameter, a few strong tornadoes, and damaging winds with gusts in excess of 75 mph appear likely across portions of the upper Mississippi Valley and Midwest Wednesday afternoon into night. More sporadic occurrences of large hail and damaging winds are […]
