Flash Flood Warning until 08:15PM Friday 
The National Weather Service in Gray has issued a
* Flash Flood Warning for... Southeastern Hillsborough County in southern New Hampshire... Southwestern Rockingham County in southern New Hampshire...
* Until 815 PM EDT.
* At 518 PM EDT, Doppler radar and automated rain gauges indicated thunderstorms producing heavy rain across the warned area. Between 1.5 and 2.5 inches of rain have fallen. Additional rainfall amounts of 1.5 to 2.5 inches are possible in the warned area. Flash flooding is ongoing or expected to begin shortly. HAZARD...Flash flooding caused by thunderstorms. SOURCE...Radar and automated gauges. IMPACT...Flash flooding of small creeks and streams, urban areas, highways, streets and underpasses as well as other poor drainage and low-lying areas.
* Some locations that will experience flash flooding include... Nashua, Derry, Merrimack, Milford, Amherst, Litchfield, Hollis, Mason and Hudson. This includes the following highways... Interstate 93 between mile markers 7 and 10.
* AFFECTED AREAS: HILLSBOROUGH, NH ... ROCKINGHAM, NH
Instructions:
Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Be aware of your surroundings and do not drive on flooded roads.
Address/Location
Merrimack Police Department
31 Baboosic Lake Rd
Merrimack, NH 03054
Contact
Emergency: 9-1-1
Non-emergencies: 603-424-3774