Merrimack County, NH Weather Alerts
Every National Weather Service alert issued for Merrimack County, New Hampshire, pushed to your phone within moments — county code NHC013, forecast zone NHZ008. Free with StormCast.
Download on Google PlayHow the NWS identifies Merrimack County
These are the identifiers the National Weather Service uses when it issues a warning here. StormCast watches NHC013 directly rather than matching on place names, which is why an alert arrives whether you are in Andover or anywhere else in the county.
NWS County Code
NHC013
Forecast Zone
NHZ008
Forecast Office
Gray (GYX)
Radar Station
KGYX
Towns covered in Merrimack County
An NWS alert for Merrimack County applies to all 27 of these communities. You do not need a separate alert for each one.
River gauges in and around Merrimack County
StormCast tracks 6 gauges near Merrimack County. Set a flood-stage alert on any of them to get notified before the water reaches you.
Current conditions
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Alert types issued for Merrimack County
Tornado
Tornado Warning, Tornado Watch, Tornado Emergency and Severe Thunderstorm Warning.
How tornado alerts work →Flooding
Flash Flood Warning, Flood Watch, Flood Advisory and River Flood Warning.
How flood alerts work →Winter
Winter Storm Warning, Ice Storm Warning, Blizzard Warning and Winter Weather Advisory.
Winter warnings explained →Fire Weather
Red Flag Warning and Fire Weather Watch when conditions favor rapid fire spread.
Fire weather alerts →Heat & Cold
Excessive Heat Warning, Heat Advisory, Freeze Warning and Frost Advisory.
Frost & freeze alerts →Merrimack County weather alert questions
Which NWS forecast zone is Merrimack County in?
Merrimack County, New Hampshire is NWS county code NHC013 and forecast zone NHZ008. Alerts for it are issued by the Gray (GYX) Weather Forecast Office, and the nearest NEXRAD radar is KGYX.
Which towns in Merrimack County are covered?
All of them. NWS alerts are issued at the county and zone level, so a warning for Merrimack County covers every community inside it, including Andover, Bow, Bradford, Canterbury, Chichester, Concord, Contoocook, Danbury, Dunbarton, East Andover, Elkins, Epsom, Franklin, Henniker, Hill, Hooksett, Loudon, New London, Newbury, North Sutton, Pittsfield, Salisbury, South Newbury, South Sutton, Suncook, Warner and Wilmot.
Are there river gauges in Merrimack County?
Yes — StormCast monitors 6 river gauges in and around Merrimack County, including Warner River at Davisville, Contoocook River at River Hill, Merrimack River at Franklin Jct.. You can set a flood-stage alert on any of them and get a push notification when the water rises.
How fast are alerts for Merrimack County delivered?
StormCast polls the NWS alert feed every 30 seconds. When a warning is issued for NHC013, the push notification goes out within moments — even with your screen off.