Knollwood, TX Live Doppler Radar

Live radar for Knollwood, Grayson County: every NWS radar combined, rain, snow and ice colors, flash-flood risk, storm tracks and official warnings.

Open live radar for KnollwoodWhat TALON shows

What weather hits Knollwood?

Since 1996, the National Weather Service has logged damaging thunderstorm winds on 146 days in the Grayson forecast zone and Grayson County — the most common reported hazard around Knollwood, mostly in May and June. Next come flash flooding (62 days) and excessive heat (52 days).

HazardDays reportedMost recentWorst on record
Damaging thunderstorm winds146Apr 2026Jun 26, 2024 · 1 death
Flash flooding62Feb 2026Jun 18, 2007 · 2 deaths · $20 million damage
Excessive heat52Jun 2026—
Heavy snow & winter storms27Jan 2026Dec 5, 2013 · $7.0 million damage
Flooding17Aug 2025Dec 24, 2024 · 2 deaths · $50,000 damage
Lightning casualties & damage14Jun 2025Jun 8, 2025 · 1 death
Extreme cold & wind chill8Jan 2026Feb 14, 2021 · $3.8 million damage
Ice storms & sleet7Mar 2015Feb 1, 2011 · $150,000 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 Grayson forecast zone and Grayson County; damage is as reported, not adjusted for inflation.

Which radars cover Knollwood?

The closest NEXRAD Doppler radar is KFWS (Dallas/Fort Worth, TX), about 87 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.

RadarDistanceLowest beam over KnollwoodView
KFWS
Dallas/Fort Worth, TX		87 mi south-southwest7,800 ftFair — the beam can pass over shallow snow and low-level rotation
KTLX
Oklahoma City, OK		120 mi north-northwest12,700 ftLimited — the beam overshoots the lowest part of storms
KFDR
Frederick, OK		143 mi west-northwest16,800 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 Knollwood

Since 1950, NOAA has recorded 132 tornadoes within 25 miles of Knollwood, 44 of them EF2/F2 or stronger. Most came in April and May. The strongest was an F4 on April 2, 1957, which passed about 20 miles north-northeast of town and caused 3 deaths. The most recent was an EF1 on June 8, 2025, which passed about 8 miles south-southwest of town.

Hail: 536 reports of 1-inch or larger hail within 25 miles since 1955, 72 of them 2 inches or more; the largest was 4.50-inch hail on April 21, 1996.

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 Knollwood'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.

Knollwood radar FAQ

Where is the nearest weather radar to Knollwood, TX?

KFWS (Dallas/Fort Worth, TX), about 87 miles south-southwest. KTLX (Oklahoma City, OK) is 120 miles away and also covers the area.

Does radar show snow in Knollwood?

Yes. TALON colors snow blue, a rain–snow mix pink and freezing rain purple using NOAA's precipitation-type analysis. Over Knollwood the lowest scan from KFWS is about 7,800 ft up, so light snow from shallow clouds can be under-shown — check NWS winter alerts too.

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

Radar for nearby towns

All Texas towns →