SPC MD 333

MD 0333 CONCERNING FREEZING RAIN FOR MUCH OF CENTRAL AND EASTERN UPPER MICHIGAN...ADJACENT NORTHEASTERN WISCONSIN AND PORTIONS OF NORTHERN LOWER MICHIGAN Mesoscale Discussion 0333 NWS Storm Prediction Center Norman OK 1234 PM CDT Thu Apr 02 2026 Areas affected...much of central and eastern Upper Michigan...adjacent northeastern Wisconsin and portions of northern Lower Michigan Concerning...Freezing rain Valid 021734Z - 022130Z SUMMARY...Light to moderate freezing rain is likely to continue to develop and overspread the region through 5-7 PM EDT, with primary accrual on elevated surfaces and vegetation. DISCUSSION...As a still sub-1000 mb surface cyclone continues to migrate east-northeastward into and through portions of southern/eastern Iowa this afternoon, a fairly sharp warm frontal zone to its east-northeast is forecast to continue to surge northward across Wisconsin and Michigan. This is likely to occur near the nose of a 40-50 kt southerly 850 mb jet, with strong lower/mid-tropospheric warm advection and frontogenetic forcing maintaining light and developing embedded bands of moderate precipitation. While surface temperatures near or just below 30F are likely to also be maintained at least into late afternoon or early evening, model forecast soundings indicate notable warming above freezing in a deepening layer above the surface, northward through much of central and eastern Upper Michigan by 21-23Z. As this occurs, precipitation rates may support at least occasional hourly freezing rain accrual in excess of .10 inches, perhaps up to .25 inches. ..Kerr.. 04/02/2026 ...Please see www.spc.noaa.gov for graphic product... ATTN...WFO...APX...MQT...GRB... LAT...LON 45178681 44948770 45388892 46308828 46828705 46538410 45548285 44678265 44718363 45378519 45178681 Read more