Green Valley, MD Live Doppler Radar
Live radar for Green Valley, Frederick County: every NWS radar combined, rain, snow and ice colors, flash-flood risk, storm tracks and official warnings.
What weather hits Green Valley?
Since 1996, the National Weather Service has logged damaging thunderstorm winds on 246 days in the Frederick forecast zone and Frederick County — the most common reported hazard around Green Valley, mostly in July and June. Next come flooding (93 days) and heavy snow & winter storms (82 days).
| Hazard | Days reported | Most recent | Worst on record |
|---|---|---|---|
| Damaging thunderstorm winds | 246 | Jun 2026 | Jun 14, 2026 · $1.0 million damage |
| Flooding | 93 | May 2025 | Jan 19, 1996 · $15 million damage |
| Heavy snow & winter storms | 82 | Feb 2026 | Dec 5, 2003 · 1 death |
| Flash flooding | 59 | Jul 2025 | Jun 27, 2006 · 5 deaths · $500,000 damage |
| Excessive heat | 45 | Jun 2025 | Jul 21, 2019 · 1 death |
| High winds | 34 | Feb 2026 | Dec 23, 2022 · 1 death |
| Lightning casualties & damage | 20 | Aug 2021 | Aug 11, 2021 · 1 death · $300,000 damage |
| Extreme cold & wind chill | 19 | Feb 2026 | — |
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 Frederick forecast zone and Frederick County; damage is as reported, not adjusted for inflation.
How much snow does Green Valley get?
A normal year brings about 31 inches of snow to Green Valley, based on NOAA's 1991–2020 climate normals for the Damascus 3 Ssw weather station 5.3 miles away. The snowiest month is usually February (11.1 in).
| Oct | Nov | Dec | Jan | Feb | Mar | Apr | May |
|---|---|---|---|---|---|---|---|
| 0.0 | 0.8 | 5.1 | 9.4 | 11.1 | 4.8 | 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 Green Valley?
The closest NEXRAD Doppler radar is KLWX (Sterling, MD), about 29 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 Green Valley | View |
|---|---|---|---|
| KLWX Sterling, MD | 29 mi south-southwest | 1,700 ft | Excellent — the lowest scan sees close to the ground |
| KDOX Dover AFB, DE | 103 mi east-southeast | 10,000 ft | Limited — the beam overshoots the lowest part of storms |
| KCCX State College, PA | 116 mi north-northwest | 12,200 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 Green Valley
Since 1950, NOAA has recorded 117 tornadoes within 25 miles of Green Valley, 16 of them EF2/F2 or stronger. Most came in June and July. The strongest was an F3 on September 24, 2001, which passed about 23 miles east-southeast of town and caused 2 deaths. The most recent was an EF0 on June 5, 2024, which touched down about 25 miles west-northwest of town.
Hail: 290 reports of 1-inch or larger hail within 25 miles since 1955, 19 of them 2 inches or more; the largest was 3.50-inch hail on June 8, 1990.
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 Green Valley'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.
Green Valley radar FAQ
Where is the nearest weather radar to Green Valley, MD?
KLWX (Sterling, MD), about 29 miles south-southwest. KDOX (Dover AFB, DE) is 103 miles away and also covers the area.
Does radar show snow in Green Valley?
Yes. TALON colors snow blue, a rain–snow mix pink and freezing rain purple using NOAA's precipitation-type analysis. Over Green Valley the lowest scan from KLWX is about 1,700 ft up.
Is TALON's radar for Green Valley 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 Green Valley, follow it right away — see watch vs. warning.
Radar for nearby towns
- New Market, MD radar 4 mi
- Mount Airy, MD radar 5 mi
- Walkersville, MD radar 11 mi
- Frederick, MD radar 11 mi
- Gaithersburg, MD radar 14 mi
- Woodsboro, MD radar 14 mi
- Sykesville, MD radar 15 mi
- New Windsor, MD radar 16 mi
- Poolesville, MD radar 17 mi
- Middletown, MD radar 17 mi