Flood Watch

Locations Affected

Manchester, NH ∙ Nashua, NH ∙ Lyman, NH ∙ Ellsworth, NH ∙ Amherst, NH ∙ Suncook, NH ∙ Windham, NH ∙ East Hampstead, NH ∙ Exeter, NH ∙ Chesterfield, NH

Headline

.Clusters of slow moving thunderstorms will bring a risk of flash flooding to portions of central and southern New Hampshire today. A nearby stationary front will support storm development this afternoon, with rainfall rates up to 2 inches an hour. These slow moving and repeating rounds of heavy rain could lead to localized flash flooding.

Full Alert Message

URGENT - IMMEDIATE BROADCAST REQUESTED Flood Watch National Weather Service Gray ME 701 AM EDT Fri Jun 6 2025 .Clusters of slow moving thunderstorms will bring a risk of flash flooding to portions of central and southern New Hampshire today. A nearby stationary front will support storm development this afternoon, with rainfall rates up to 2 inches an hour. These slow moving and repeating rounds of heavy rain could lead to localized flash flooding. ...FLOOD WATCH IN EFFECT FROM NOON EDT TODAY THROUGH THIS EVENING... * WHAT...Flash Flooding caused by slow moving thunderstorms and repeating rounds of heavy rainfall. * WHERE...Portions of central, northern, and southern New Hampshire, including the following areas, in New Hampshire, Western And Central Hillsborough. In central New Hampshire, Belknap, Merrimack, Strafford and Sullivan. In northern New Hampshire, Northern Carroll, Northern Grafton, Southern Carroll and Southern Grafton. In southern New Hampshire, Cheshire, Eastern Hillsborough and Interior Rockingham. * WHEN...From noon EDT today through this evening. * IMPACTS...Excessive runoff may result in flooding of already swollen streams and other low-lying and flood-prone locations including urban areas. * ADDITIONAL DETAILS... - Repeating rounds of heavy rainfall could result in rainfall amounts around 3 inches through this evening. Recent wet conditions across central and southern New Hampshire are keeping streams running high, and soils wet. These areas in particular will be more vulnerable to flash flooding. However rainfall amounts exceeding 3 inches in a few hours could result in flooding for most areas regardless of antecedent conditions. PRECAUTIONARY/PREPAREDNESS ACTIONS... You should monitor the latest forecast and be alert for possible Flood Warnings. Those living in areas prone to flooding should be prepared to take action should flash flooding develop.

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