Flood Watch 12/11/2024 00:16 for Maine, New Hampshire areas

A widespread soaking rain is moving into the region and will continue through tonight. Warm temperatures will melt snowpack and increase river flows. Cold air on the backside of the system will slow runoff on Thursday and end overland flooding, however, river responses could last through the end of the week. * WHAT...Flooding caused by heavy rain, snowmelt, and ice jams is possible. * WHERE...Portions of Maine, including the following areas, Androscoggin, Central Interior Cumberland, Central Somerset, Coastal Cumberland, Coastal Waldo, Coastal York, Interior Cumberland Highlands, Interior Waldo, Interior York, Kennebec, Knox, Lincoln, Northern Franklin, Northern Oxford, Sagadahoc, Southern Franklin, Southern Oxford and Southern Somerset and New Hampshire, including the following areas, Belknap, Cheshire, Eastern Hillsborough, Interior Rockingham, Merrimack, Northern Carroll, Northern Coos, Northern Grafton, Southern Carroll, Southern Coos, Southern Grafton, Strafford, Sullivan and Western And Central Hillsborough. * WHEN...From 1 PM EST this afternoon through Thursday morning. * IMPACTS...The combination of rain and snowmelt will result in widespread and potentially significant flooding. The heavy rainfall rates could trigger flash flood conditions. For northern streams river ice is expected to move and could result in ice jam flooding. * ADDITIONAL DETAILS... - A soaking rain of 2 to 4 inches is possible from through early Thursday morning. Snowmelt will contribute to the runoff. Additionally there are concerns of shifting river ice in the north. Rivers and streams could rise to significant levels.