Tropical Storm Madeline, one of two storms on paths toward Hawaii, could bring muggy weather and the chance of heavy rain and strong winds this week. The storm could affect the visit to Oahu of President Barack Obama Wednesday night and events with the World Conservation Congress starting Thursday. The five-day forecast track for Madeline takes it near the Big Island Wednesday, and south of Oahu Thursday. However, forecasters caution that there is still uncertainty with the forecast. The margin of error for the five-day forecast is 170 miles in either direction.