Flood Watch 12/11/2024 12:13 for Maine, New Hampshire areas

A widespread soaking rain will continue through tonight. Warm temperatures will melt some of the snowpack, raising streamflows. 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...Through Thursday morning. * IMPACTS...Heavy rainfall rates in combination with snowmelt late tonight could trigger flash flood conditions. The area of greatest concern is in the foothills where the combination of rain and snowmelt will be highest. In the mountains the colder and drier snowpack will limit the flood extent, but isolated ice jams and rapid runoff from area hills could cause localized flooding. Rapid rises in small streams is likely.