North Great River, NY Live Doppler Radar

Live radar for North Great River, Suffolk County: every NWS radar combined, rain, snow and ice colors, flash-flood risk, storm tracks and official warnings.

Open live radar for North Great RiverWhat TALON shows

What weather hits North Great River?

Since 1996, the National Weather Service has logged damaging thunderstorm winds on 126 days in the Southwest Suffolk forecast zone and Suffolk County — the most common reported hazard around North Great River, mostly in July and June. Next come flash flooding (86 days) and heavy snow & winter storms (53 days).

HazardDays reportedMost recentWorst on record
Damaging thunderstorm winds126Jun 2026Sep 7, 1998 · 1 death
Flash flooding86Jul 2025Aug 13, 2014 · $35 million damage
Heavy snow & winter storms53Jan 2026—
High winds49Feb 2026Oct 29, 2012 · 1 death · $1.0 million damage
Coastal flooding41Jan 2024Apr 16, 2007 · $26 million damage
Lightning casualties & damage28Jun 2026Aug 18, 2018 · 1 death
Flooding16Mar 2010—
Blizzards11Feb 2026Feb 8, 2013 · 2 deaths · $6.0 million damage

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 Southwest Suffolk forecast zone and Suffolk County; damage is as reported, not adjusted for inflation.

How much snow does North Great River get?

A normal year brings about 32 inches of snow to North Great River, based on NOAA's 1991–2020 climate normals for the Islip Li Macarthur Ap weather station 4.1 miles away. The snowiest month is usually January (10.3 in).

OctNovDecJanFebMarAprMay
0.00.54.510.39.46.50.60.0

Normal snowfall in inches. TALON Pro compares this season's snow at your location with these normals as winter goes on.

Which radars cover North Great River?

The closest NEXRAD Doppler radar is KOKX (Upton, NY), about 17 miles east-northeast. 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.

RadarDistanceLowest beam over North Great RiverView
KOKX
Upton, NY		17 mi east-northeast1,000 ftExcellent — the lowest scan sees close to the ground
KDIX
Philadelphia, NJ		86 mi southwest7,700 ftFair — the beam can pass over shallow snow and low-level rotation
KBOX
Boston, MA		134 mi northeast15,100 ftLimited — 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 North Great River

Since 1950, NOAA has recorded 24 tornadoes within 25 miles of North Great River, 3 of them EF2/F2 or stronger. Most came in June and August. The strongest was an F2 on July 10, 1989, which touched down about 21 miles east-northeast of town. The most recent was an EF0 on November 13, 2021, which passed about 18 miles west of town.

Hail: 64 reports of 1-inch or larger hail within 25 miles since 1955, 3 of them 2 inches or more; the largest was 2.50-inch hail on July 10, 1989.

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 North Great River'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.

North Great River radar FAQ

Where is the nearest weather radar to North Great River, NY?

KOKX (Upton, NY), about 17 miles east-northeast. KDIX (Philadelphia, NJ) is 86 miles away and also covers the area.

Does radar show snow in North Great River?

Yes. TALON colors snow blue, a rain–snow mix pink and freezing rain purple using NOAA's precipitation-type analysis. Over North Great River the lowest scan from KOKX is about 1,000 ft up.

Is TALON's radar for North Great River 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 North Great River, follow it right away — see watch vs. warning.

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