KCXX radar — Burlington, VT
KCXX is the National Weather Service's WSR-88D Doppler radar for the Burlington area, operated with the NWS office BTV. View it live in TALON — the loop, super-res reflectivity, storm-relative velocity, rotation and correlation coefficient.
| Station | KCXX (Burlington, Vermont) |
|---|---|
| Location | 44.5110°, -73.1660° · Chittenden County |
| Elevation | 430 ft above sea level |
| Type | WSR-88D (NEXRAD) S-band dual-polarization Doppler radar |
| Products in TALON | Super-res reflectivity (0.25 km), velocity, storm-relative velocity, rotation (azimuthal shear), correlation coefficient PRO |
How high can KCXX see?
A radar beam travels in a nearly straight line while the Earth curves away underneath it, so the farther a storm is from KCXX, the higher above the ground the radar is looking. Tornadoes start in the lowest few thousand feet, so storms close to the radar show low-level rotation much better.
| Distance from KCXX | Lowest scan (0.5°) | Next scan (1.5°) |
|---|---|---|
| 10 mi | 500 ft | 1,400 ft |
| 25 mi | 1,500 ft | 3,800 ft |
| 50 mi | 3,600 ft | 8,200 ft |
| 75 mi | 6,300 ft | 13,200 ft |
| 100 mi | 9,600 ft | 18,800 ft |
| 150 mi | 18,200 ft | 32,000 ft |
Height of the beam's center above the radar, using standard refraction. Terrain can raise or block the beam.
Severe weather inside KCXX's range
Since 1950, NOAA has recorded 36 tornadoes within 60 miles of the KCXX radar, 8 of them rated EF2/F2 or stronger. They have been most common in July and June. The strongest was an F2 on August 3, 1970, which passed about 20 miles north of the radar. The most recent was an EF0 on June 10, 2025, which touched down about 24 miles northwest of the radar.
Hail: 447 reports of hail 1 inch or larger within 60 miles of the KCXX radar since 1955, 19 of them 2 inches or larger. The largest was 3.30-inch hail (teacup size) on July 16, 2009.
| Tornadoes since 1950 | 36 |
| EF2/F2 or stronger | 8 |
| Strongest tornado | F2 · Aug 1970 |
| Busiest tornado month | July |
| Largest hail | 3.30 in · Jul 2009 |
Source: NOAA Storm Prediction Center severe weather database — tornadoes 1950–2025, hail 1955–2025 (the latest year is preliminary). Distances are to each tornado's recorded track; ratings before February 2007 use the original Fujita (F) scale.
Nearby radars
- KTYX · Montague, NY 135 mi
- KENX · Albany, NY 140 mi
- KGYX · Portland, ME 150 mi
- KBOX · Boston, MA 204 mi
- KBGM · Binghamton, NY 213 mi
KCXX radar FAQ
How often does KCXX update?
Every NEXRAD radar completes a full scan about every 4–6 minutes in storm mode, and repeats the lowest tilt more often (SAILS) during severe weather. TALON loads each new scan as it arrives.
What is the range of KCXX?
Reflectivity reaches about 290 miles and velocity about 185 miles, but useful low-level detail is within roughly 100 miles — see the table above.
Is KCXX down?
Radars occasionally go offline for maintenance. When one does, TALON's US radar map fills the gap from neighboring radars (KTYX, KENX, KGYX).