Grantley, PA Live Doppler Radar
Live radar for Grantley, York County: every NWS radar combined, rain, snow and ice colors, flash-flood risk, storm tracks and official warnings.
What weather hits Grantley?
Since 1996, the National Weather Service has logged damaging thunderstorm winds on 250 days in the York forecast zone and York County — the most common reported hazard around Grantley, mostly in July and June. Next come flash flooding (71 days) and heavy snow & winter storms (68 days).
| Hazard | Days reported | Most recent | Worst on record |
|---|---|---|---|
| Damaging thunderstorm winds | 250 | Jun 2026 | Jun 6, 2026 · 1 death |
| Flash flooding | 71 | Jul 2025 | May 9, 2004 · 2 deaths · $5.5 million damage |
| Heavy snow & winter storms | 68 | Feb 2026 | Oct 29, 2011 · 1 death |
| Flooding | 43 | Feb 2026 | Sep 7, 2011 · 1 death · $4.7 million damage |
| High winds | 23 | Dec 2025 | Nov 13, 2003 · 1 death |
| Excessive heat | 11 | Jul 2025 | — |
| Ice storms & sleet | 7 | Feb 2008 | — |
| Lightning casualties & damage | 6 | Jul 2025 | Jun 19, 2007 · 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 York forecast zone and York County; damage is as reported, not adjusted for inflation.
How much snow does Grantley get?
A normal year brings about 25 inches of snow to Grantley, based on NOAA's 1991–2020 climate normals for the York 3 Ssw Pump Stn weather station 1.9 miles away. The snowiest month is usually January (8.5 in).
| Oct | Nov | Dec | Jan | Feb | Mar | Apr | May |
|---|---|---|---|---|---|---|---|
| 0.0 | 0.5 | 3.3 | 8.5 | 8.2 | 3.9 | 0.2 | 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 Grantley?
The closest NEXRAD Doppler radar is KLWX (Sterling, MD), about 78 miles south-southwest. 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 Grantley | View |
|---|---|---|---|
| KLWX Sterling, MD | 78 mi south-southwest | 6,600 ft | Fair — the beam can pass over shallow snow and low-level rotation |
| KCCX State College, PA | 95 mi northwest | 8,900 ft | Fair — the beam can pass over shallow snow and low-level rotation |
| KDOX Dover AFB, DE | 103 mi southeast | 10,100 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 Grantley
Since 1950, NOAA has recorded 81 tornadoes within 25 miles of Grantley, 24 of them EF2/F2 or stronger. Most came in August and June. The strongest was an F3 on April 5, 1952, which crossed near town. The most recent was an EF1 on August 9, 2024, which passed about 22 miles north-northwest of town.
Hail: 212 reports of 1-inch or larger hail within 25 miles since 1955, 10 of them 2 inches or more; the largest was 4.00-inch hail on April 9, 1980.
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 Grantley'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.
Grantley radar FAQ
Where is the nearest weather radar to Grantley, PA?
KLWX (Sterling, MD), about 78 miles south-southwest. KCCX (State College, PA) is 95 miles away and also covers the area.
Does radar show snow in Grantley?
Yes. TALON colors snow blue, a rain–snow mix pink and freezing rain purple using NOAA's precipitation-type analysis. Over Grantley the lowest scan from KLWX is about 6,600 ft up, so light snow from shallow clouds can be under-shown — check NWS winter alerts too.
Is TALON's radar for Grantley 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 Grantley, follow it right away — see watch vs. warning.
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