Katy, TX Live Doppler Radar
Live radar for Katy, Waller County: every NWS radar combined, rain, snow and ice colors, flash-flood risk, storm tracks and official warnings.
What weather hits Katy?
Since 1996, the National Weather Service has logged damaging thunderstorm winds on 32 days in the Waller forecast zone and Waller County — the most common reported hazard around Katy, mostly in May and August. Next come flash flooding (22 days) and excessive heat (12 days).
| Hazard | Days reported | Most recent | Worst on record |
|---|---|---|---|
| Damaging thunderstorm winds | 32 | Oct 2025 | May 16, 2024 · $1.0 million damage |
| Flash flooding | 22 | Oct 2021 | Apr 18, 2016 · 1 death · $6.7 million damage |
| Excessive heat | 12 | Sep 2023 | — |
| Ice storms & sleet | 5 | Feb 2021 | Jan 16, 2007 · $2,000 damage |
| Hurricanes & tropical storms | 5 | Sep 2021 | Aug 25, 2017 · $350 million damage |
| Heavy snow & winter storms | 3 | Jan 2025 | — |
| Extreme cold & wind chill | 1 | Feb 2021 | Feb 15, 2021 · $328,000 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 Waller forecast zone and Waller County; damage is as reported, not adjusted for inflation.
Which radars cover Katy?
The closest NEXRAD Doppler radar is KHGX (Houston, TX), 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 Katy | View |
|---|---|---|---|
| KHGX Houston, TX | 51 mi east-southeast | 3,600 ft | Good — most storms and steady rain or snow show clearly |
| KGRK Central Texas, TX | 112 mi northwest | 11,500 ft | Limited — the beam overshoots the lowest part of storms |
| KEWX San Antonio, TX | 131 mi west | 14,700 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 Katy
Since 1950, NOAA has recorded 133 tornadoes within 25 miles of Katy, 24 of them EF2/F2 or stronger. Most came in May and February. The strongest was an F3 on February 5, 1986, which passed about 24 miles northeast of town and caused 2 deaths. The most recent was an EF1 on November 24, 2025, which touched down about 13 miles northeast of town.
Hail: 215 reports of 1-inch or larger hail within 25 miles since 1955, 21 of them 2 inches or more; the largest was 3.00-inch hail on May 4, 2006.
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 Katy'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.
Katy radar FAQ
Where is the nearest weather radar to Katy, TX?
KHGX (Houston, TX), about 51 miles east-southeast. KGRK (Central Texas, TX) is 112 miles away and also covers the area.
Does radar show snow in Katy?
Yes. TALON colors snow blue, a rain–snow mix pink and freezing rain purple using NOAA's precipitation-type analysis. Over Katy the lowest scan from KHGX is about 3,600 ft up.
Is TALON's radar for Katy 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 Katy, follow it right away — see watch vs. warning.
Radar for nearby towns
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