ZCZC NFDTCPAT3 ALL TTAA00 KWNH DDHHMM BULLETIN Post-Tropical Cyclone Cristobal Advisory Number 34 NWS Weather Prediction Center College Park MD AL032020 1000 PM CDT Tue Jun 09 2020 ...CRISTOBAL BECOMES EXTRATROPICAL... ...WIDESPREAD HEAVY RAINFALL AFFECTING THE WESTERN GREAT LAKES TONIGHT... SUMMARY OF 1000 PM CDT...0300 UTC...INFORMATION ----------------------------------------------- LOCATION...43.5N 90.4W ABOUT 180 MI...330 KM NW OF CHICAGO ILLINOIS ABOUT 60 MI...110 KM NW OF MADISON WISCONSIN MAXIMUM SUSTAINED WINDS...35 MPH...55 KM/H PRESENT MOVEMENT...NNE OR 25 DEGREES AT 31 MPH...50 KM/H MINIMUM CENTRAL PRESSURE...986 MB...29.21 INCHES WATCHES AND WARNINGS -------------------- A Flash Flood Watch is in effect for... * Parts of the Midwest and western Great Lakes Wind Advisories are in effect for... * Chicagoland and areas adjacent to Lakes Michigan and Superior A Gale Warning is in effect for... * Lake Michigan * Eastern Lake Superior * Portions of Lake Huron For storm information specific to your area, including possible inland watches and warnings, please monitor products issued by your local National Weather Service forecast office. DISCUSSION AND OUTLOOK ---------------------- At 1000 PM CDT (0300 UTC), the center of Post-Tropical Cyclone Cristobal was located near latitude 43.5 North, longitude 90.4 West. The post-tropical cyclone is moving toward the north-northeast near 31 mph (50 km/h) and this motion is expected to continue as Cristobal tracks toward Lake Superior and then into Ontario, Canada by Wednesday morning. Maximum sustained winds are near 35 mph (55 km/h) with higher gusts. Some further strengthening is possible as Cristobal fully transitions to an extratropical low. The estimated minimum central pressure is 989 mb (29.21 inches). HAZARDS AFFECTING LAND ---------------------- WIND: Winds gusting over 45 mph are expected tonight and Wednesday over Chicagoland and areas adjacent to the western Great Lakes. RAINFALL: Cristobal will produce storm total rain accumulations of 2 to 4 inches, with isolated maximum amounts of 5 inches from southeast Minnesota through much of Wisconsin, the Upper Peninsula of Michigan, and parts of lower Michigan. This rainfall may produce flash flooding, and is forecast to produce new and renewed minor to moderate river flooding across portions of the mid to upper Mississippi Valleys. NEXT ADVISORY ------------- Next complete advisory at 400 AM CDT. $$ Forecaster Burke FORECAST POSITIONS AND MAX WINDS INIT 10/0300Z 43.8N 90.0W 30 KT 35 MPH...POST-TROPICAL 12H 10/1200Z 47.3N 87.3W 35 KT 40 MPH...POST-TROP/REMNT LOW 24H 11/0000Z 51.3N 82.7W 35 KT 40 MPH...POST-TROP/REMNT LOW 36H 11/1200Z...DISSIPATED NNNN