Thornwood, NY Live Doppler Radar
Live radar for Thornwood, Westchester County: every NWS radar combined, rain, snow and ice colors, flash-flood risk, storm tracks and official warnings.
What weather hits Thornwood?
Since 1996, the National Weather Service has logged damaging thunderstorm winds on 151 days in the Northern Westchester forecast zone and Westchester County — the most common reported hazard around Thornwood, mostly in July and August. Next come flash flooding (90 days) and heavy snow & winter storms (76 days).
| Hazard | Days reported | Most recent | Worst on record |
|---|---|---|---|
| Damaging thunderstorm winds | 151 | Jun 2026 | Jul 9, 1997 · 1 death |
| Flash flooding | 90 | Oct 2025 | Sep 1, 2021 · 2 deaths |
| Heavy snow & winter storms | 76 | Feb 2026 | — |
| High winds | 32 | Feb 2026 | Oct 29, 2012 · 2 deaths · $1.0 million damage |
| Flooding | 32 | Jun 2021 | Aug 28, 2011 · 1 death |
| Lightning casualties & damage | 16 | Jul 2024 | Sep 25, 1999 · 1 death |
| Excessive heat | 7 | Jul 2012 | — |
| Coastal flooding | 4 | Jan 2024 | Dec 6, 1996 · 1 death |
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 Northern Westchester forecast zone and Westchester County; damage is as reported, not adjusted for inflation.
How much snow does Thornwood get?
A normal year brings about 33 inches of snow to Thornwood, based on NOAA's 1991–2020 climate normals for the Dobbs Ferry-Ardsley weather station 8.2 miles away. The snowiest month is usually February (10.9 in).
| Oct | Nov | Dec | Jan | Feb | Mar | Apr | May |
|---|---|---|---|---|---|---|---|
| 0.0 | 0.3 | 5.6 | 9.4 | 10.9 | 5.8 | 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 Thornwood?
The closest NEXRAD Doppler radar is KOKX (Upton, NY), about 51 miles east-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 Thornwood | View |
|---|---|---|---|
| KOKX Upton, NY | 51 mi east-southeast | 3,600 ft | Good — most storms and steady rain or snow show clearly |
| KDIX Philadelphia, NJ | 87 mi south-southwest | 7,900 ft | Fair — the beam can pass over shallow snow and low-level rotation |
| KENX Albany, NY | 102 mi north | 10,000 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 Thornwood
Since 1950, NOAA has recorded 34 tornadoes within 25 miles of Thornwood, 8 of them EF2/F2 or stronger. Most came in July and September. The strongest was an F2 on July 12, 2006, which passed about 2 miles south-southeast of town. The most recent was an EF0 on August 4, 2020, which touched down about 21 miles east of town.
Hail: 164 reports of 1-inch or larger hail within 25 miles since 1955, 6 of them 2 inches or more; the largest was 3.00-inch hail on August 1, 2011.
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 Thornwood'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.
Thornwood radar FAQ
Where is the nearest weather radar to Thornwood, NY?
KOKX (Upton, NY), about 51 miles east-southeast. KDIX (Philadelphia, NJ) is 87 miles away and also covers the area.
Does radar show snow in Thornwood?
Yes. TALON colors snow blue, a rain–snow mix pink and freezing rain purple using NOAA's precipitation-type analysis. Over Thornwood the lowest scan from KOKX is about 3,600 ft up.
Is TALON's radar for Thornwood 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 Thornwood, follow it right away — see watch vs. warning.