State emergency management officials are warning residents in most of the state to prepare for potentially dangerous levels of flooding this weekend.

The National Weather Service on Friday issued a flood watch for Coos, Grafton, Carroll, Belknap, Merrimack, and Sullivan counties. The rest of the state is under a hazardous weather outlook.

“A flood watch means there is potential for flooding based on the current forecasts,” Jennifer Harper, assistant director of New Hampshire Homeland Security & Emergency Management, said in a statement. “Be alert for possible flood warnings and those living in areas prone to flooding should be prepared to take action should flooding develop.”

Scattered showers are forecast to begin Friday evening. While the rainfall will not be heavy, it is expected to combine with increased snow melt due to the higher temperatures.

Saturday is expected to bring consistent rain and temperatures in the 60s.

HSEM said that the Connecticut and Saco rivers could reach minor flood levels, while the Pemigewasset — specifically at Plymouth —could reach moderate flood range.

The agency urged residents to heed evacuation requests from local officials, report power outages, stay clear of downed power lines, check on elderly neighbors and avoid driving on flooded roads.

“Overall, we anticipate this will be a minor flooding event,” Harper said in the statement. “With any anticipated flooding event, residents and visitors are encouraged to be prepared –- have what you need and know what to do to stay safe.”