East Merrimack, NH Live Doppler Radar
Live radar for East Merrimack, Hillsborough County: every NWS radar combined, rain, snow and ice colors, flash-flood risk, storm tracks and official warnings.
What weather hits East Merrimack?
Since 1996, the National Weather Service has logged heavy snow or a winter storm on 126 days in the Eastern Hillsborough forecast zone and Hillsborough County — the most common reported hazard around East Merrimack, mostly in January and March. Next come damaging thunderstorm winds (113 days) and flooding (30 days).
| Hazard | Days reported | Most recent | Worst on record |
|---|---|---|---|
| Heavy snow & winter storms | 126 | Feb 2026 | Dec 7, 1996 · 1 death · $1.0 million damage |
| Damaging thunderstorm winds | 113 | Jun 2026 | Jul 6, 1999 · 1 death |
| Flooding | 30 | May 2025 | May 13, 2006 · $2.0 million damage |
| Flash flooding | 28 | Aug 2025 | Jul 18, 2021 · $1.0 million damage |
| Lightning casualties & damage | 22 | Sep 2014 | May 24, 2004 · $350,000 damage |
| High winds | 17 | Oct 2017 | Nov 29, 2003 · 2 deaths · $25,000 damage |
| Ice storms & sleet | 5 | Dec 2008 | Dec 11, 2008 · $15 million damage |
| Excessive heat | 4 | Jun 2024 | — |
Source: NOAA NCEI Storm Events Database, 1996–2026 (the latest year is partial). A "day" is a date with at least one report in the Eastern Hillsborough forecast zone and Hillsborough County; damage is as reported, not adjusted for inflation.
How much snow does East Merrimack get?
A normal year brings about 53 inches of snow to East Merrimack, based on NOAA's 1991–2020 climate normals for the Nashua 2 Nnw weather station 5.6 miles away. The snowiest month is usually January (14.7 in).
| Oct | Nov | Dec | Jan | Feb | Mar | Apr | May |
|---|---|---|---|---|---|---|---|
| 0.0 | 1.7 | 11.2 | 14.7 | 14.5 | 10.1 | 0.7 | 0.0 |
Normal snowfall in inches. TALON Pro compares this season's snow at your location with these normals as winter goes on.
Which radars cover East Merrimack?
The closest NEXRAD Doppler radar is KBOX (Boston, MA), about 66 miles south-southeast. Radar beams climb as they travel, so the height of the lowest scan over town decides how low in a storm the radar can see.
| Radar | Distance | Lowest beam over East Merrimack | View |
|---|---|---|---|
| KBOX Boston, MA | 66 mi south-southeast | 5,200 ft | Good — most storms and steady rain or snow show clearly |
| KGYX Portland, ME | 94 mi northeast | 8,700 ft | Fair — the beam can pass over shallow snow and low-level rotation |
| KENX Albany, NY | 133 mi west | 14,900 ft | Limited — the beam overshoots the lowest part of storms |
Beam height is the center of the 0.5° scan above the radar, with standard refraction. Mountains near a radar can block it further.
Tornado & hail history near East Merrimack
Since 1950, NOAA has recorded 36 tornadoes within 25 miles of East Merrimack, 13 of them EF2/F2 or stronger. Most came in July and August. The strongest was an F3 on October 3, 1970, which passed about 21 miles south of town and caused 1 death. The most recent was an EF2 on July 24, 2008, which passed about 21 miles north-northeast of town.
Hail: 199 reports of 1-inch or larger hail within 25 miles since 1955, 8 of them 2 inches or more; the largest was 2.00-inch hail on August 4, 2015.
Source: NOAA Storm Prediction Center — tornadoes 1950–2025, hail 1955–2025. Distances are to each tornado's track; ratings before February 2007 use the original Fujita scale.
On TALON you get East Merrimack's live radar loop, rain/snow/ice colors, flash-flood risk, storm tracks with arrival times and NWS warnings free; close-up radar and rotation detection are part of TALON Pro.
East Merrimack radar FAQ
Where is the nearest weather radar to East Merrimack, NH?
KBOX (Boston, MA), about 66 miles south-southeast. KGYX (Portland, ME) is 94 miles away and also covers the area.
Does radar show snow in East Merrimack?
Yes. TALON colors snow blue, a rain–snow mix pink and freezing rain purple using NOAA's precipitation-type analysis. Over East Merrimack the lowest scan from KBOX is about 5,200 ft up.
Is TALON's radar for East Merrimack free?
Yes — the US radar loop, rain/snow/ice colors, flash-flood risk, storm tracks and NWS warnings are free in any browser. Close-up radar, rotation detection and longer forecasts are part of TALON Pro.
Should I rely on radar for my safety?
No app replaces official warnings. When the National Weather Service issues a warning for East Merrimack, follow it right away — see watch vs. warning.
Radar for nearby towns
- Manchester, NH radar 8 mi
- Nashua, NH radar 9 mi
- Concord, NH radar 25 mi
- Dover, NH radar 37 mi
- Portsmouth, NH radar 38 mi
- Rochester, NH radar 39 mi
- Somersworth, NH radar 40 mi
- Franklin, NH radar 41 mi
- Keene, NH radar 42 mi
- Laconia, NH radar 49 mi