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Merrimack Police Department
Monday December 18th, 2023 :: 09:35 a.m. EST

Advisory

Flood Warning until 07:00PM Monday

* WHAT...Flooding caused by excessive rainfall is expected.

* WHERE...Portions of central, northern, and southern New Hampshire, including the following counties, in central New Hampshire, Belknap, Merrimack, Strafford and Sullivan. In northern New Hampshire, Carroll and Grafton. In southern New Hampshire, Cheshire, Hillsborough and Rockingham.

* WHEN...Until 700 PM EST Monday.

* IMPACTS...Rain continues across the region supporting small stream rises. As the day continues widespread flooding is expected to develop. Numerous low-water crossings are expected to inundate causing major travel disruptions throughout the region. Travels should monitor road closures and avoid driving through flooded roads. The flooding is expected to continue through this evening and likely into the overnight. Additional flood warnings are possible, so stay up to date with the latest warnings from the National Weather Service.

* ADDITIONAL DETAILS... - At 930 AM EST, Doppler radar and automated rain gauges indicated heavy rain due to thunderstorms. Flooding is ongoing or expected to begin shortly in the warned area. Between 1 and 2.5 inches of rain have fallen. - Additional rainfall amounts of 1 to 2.5 inches are possible in the warned area. - Some locations that will experience flooding include... Manchester, Nashua, Concord, Derry, Rochester, Merrimack, Keene, Portsmouth, Laconia and Hampton.

* AFFECTED AREAS: BELKNAP, NH ... CARROLL, NH ... CHESHIRE, NH ... GRAFTON, NH ... HILLSBOROUGH, NH ... MERRIMACK, NH ... ROCKINGHAM, NH ... STRAFFORD, NH ... SULLIVAN, NH

Instructions:

Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles.

Address/Location
Merrimack Police Department
31 Baboosic Lake Rd
Merrimack, NH 03054

Contact
Emergency: 9-1-1
Non-emergencies: 603-424-3774

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Alert Details

Severity:
Severe - Significant threat to life or property
Urgency:
Expected - Responsive action SHOULD be taken soon (within next hour)
Certainty:
Likely (p > ~50%)
Category:
Meteorological (inc. flood)
Event:
Flood Warning

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