412 FXUS63 KGRR 020657 AFDGRR Area Forecast Discussion National Weather Service Grand Rapids MI 257 AM EDT Tue Jun 2 2026 .KEY MESSAGES... - Warm and Dry through Most of the Week - Chances for rain return into the weekend && .DISCUSSION... Issued at 258 AM EDT Tue Jun 2 2026 - Warm and Dry through Most of the Week High pressure continues to dominate the pattern so not much has changed. High pressure, especially at the surface, will settle overthe Great Lakes region through Thursday. Daytime highs will range from the upper 70s to low 80s through the week. Those temps are around 5 to 10 degrees above normal. So expect fair weather to begin June. - Chances for rain return into the weekend A large upper level low from out west, moving along the Canadian border, will push the high pressure southward. As that high pressure traverses south, a more zonal flow will trek through the region. That zonal flow will create a channel for gulf moisture to stream through the plains, through Michigan and into the northeast. With daytime highs remaining in the 80s, that moisture will thus allow for shower and storm development. There remains some question on timing, but given mid level moisture and timing of the upper level wave, the first chance for showers and storms should be late Friday. More tumultuous weather will be in store for the first half of the weekend. Ensembles diverge by Sunday, but cloudy skies with light rain could persist into Sunday. && .AVIATION /06Z TAFS THROUGH 06Z WEDNESDAY/... Issued at 1255 AM EDT Tue Jun 2 2026 VFR will continue to dominate the pattern through the TAF period. Generally northeast winds will prevail. Some winds could become gusty to around 15kts due to the daytime on Tuesday. && .MARINE... Issued at 255 AM EDT Tue Jun 2 2026 Persistent northerly flow over Lake Michigan will continue today into tomorrow. Thankfully flow is fairly week, but daytime mixing could allow for waves to get upwards of 3 feet late in the day before subsiding. && .GRR WATCHES/WARNINGS/ADVISORIES... MI...None. MARINE...None. && $$ DISCUSSION...Ceru AVIATION...Ceru MARINE...Ceru

NWS GRR Office Area Forecast Discussion