Unionville, PA Live Doppler Radar
Live radar for Unionville, Chester County: every NWS radar combined, rain, snow and ice colors, flash-flood risk, storm tracks and official warnings.
What weather hits Unionville?
Since 1996, the National Weather Service has logged damaging thunderstorm winds on 250 days in the Eastern Chester forecast zone and Chester County — the most common reported hazard around Unionville, mostly in July and June. Next come flash flooding (108 days) and flooding (63 days).
| Hazard | Days reported | Most recent | Worst on record |
|---|---|---|---|
| Damaging thunderstorm winds | 250 | Jun 2026 | Jul 18, 2006 · 2 deaths |
| Flash flooding | 108 | Jul 2025 | Sep 1, 2021 · 1 death · $41 million damage |
| Flooding | 63 | Jul 2025 | Nov 8, 2006 · 1 death |
| Lightning casualties & damage | 34 | Apr 2023 | Apr 15, 2023 · 1 death |
| Heavy snow & winter storms | 24 | Feb 2026 | — |
| Excessive heat | 16 | Jul 2025 | — |
| Extreme cold & wind chill | 10 | Dec 2022 | — |
| High winds | 6 | Apr 2021 | Jan 31, 2013 · $10,000 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 Eastern Chester forecast zone and Chester County; damage is as reported, not adjusted for inflation.
How much snow does Unionville get?
A normal year brings about 31 inches of snow to Unionville, based on NOAA's 1991–2020 climate normals for the W Chester 2 Nw weather station 7 miles away. The snowiest month is usually February (13.2 in).
| Oct | Nov | Dec | Jan | Feb | Mar | Apr | May |
|---|---|---|---|---|---|---|---|
| 0.0 | 0.5 | 4.4 | 7.9 | 13.2 | 4.1 | 0.4 | 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 Unionville?
The closest NEXRAD Doppler radar is KDIX (Philadelphia, NJ), about 70 miles east. 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 Unionville | View |
|---|---|---|---|
| KDIX Philadelphia, NJ | 70 mi east | 5,700 ft | Good — most storms and steady rain or snow show clearly |
| KDOX Dover AFB, DE | 76 mi south-southeast | 6,400 ft | Fair — the beam can pass over shallow snow and low-level rotation |
| KLWX Sterling, MD | 113 mi west-southwest | 11,700 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 Unionville
Since 1950, NOAA has recorded 87 tornadoes within 25 miles of Unionville, 24 of them EF2/F2 or stronger. Most came in August and July. The strongest was an F3 on March 22, 1955, which passed about 8 miles northeast of town and caused 1 death. The most recent was an EF0 on September 4, 2025, which touched down about 21 miles west of town.
Hail: 183 reports of 1-inch or larger hail within 25 miles since 1955, 8 of them 2 inches or more; the largest was 2.75-inch hail on May 29, 1995.
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 Unionville'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.
Unionville radar FAQ
Where is the nearest weather radar to Unionville, PA?
KDIX (Philadelphia, NJ), about 70 miles east. KDOX (Dover AFB, DE) is 76 miles away and also covers the area.
Does radar show snow in Unionville?
Yes. TALON colors snow blue, a rain–snow mix pink and freezing rain purple using NOAA's precipitation-type analysis. Over Unionville the lowest scan from KDIX is about 5,700 ft up.
Is TALON's radar for Unionville 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 Unionville, follow it right away — see watch vs. warning.