KHPX radar — Fort Campbell, KY
KHPX is the National Weather Service's WSR-88D Doppler radar for the Fort Campbell area, operated with the NWS office PAH. View it live in TALON — the loop, super-res reflectivity, storm-relative velocity, rotation and correlation coefficient.
| Station | KHPX (Fort Campbell, Kentucky) |
|---|---|
| Location | 36.7370°, -87.2850° · Todd County |
| Elevation | 623 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 KHPX see?
A radar beam travels in a nearly straight line while the Earth curves away underneath it, so the farther a storm is from KHPX, 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 KHPX | 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 KHPX's range
Since 1950, NOAA has recorded 545 tornadoes within 60 miles of the KHPX radar, 149 of them rated EF2/F2 or stronger. They have been most common in May and April. The strongest was an EF4 on December 10, 2021, which passed about 33 miles north-northwest of the radar and caused 57 deaths. The most recent was an EF1 on November 22, 2025, which touched down about 7 miles southeast of the radar.
Hail: 1,189 reports of hail 1 inch or larger within 60 miles of the KHPX radar since 1955, 81 of them 2 inches or larger. The largest was 4.50-inch hail (grapefruit size) on May 24, 1995.
| Tornadoes since 1950 | 545 |
| EF2/F2 or stronger | 149 |
| Strongest tornado | EF4 · Dec 2021 |
| Busiest tornado month | May |
| Largest hail | 4.50 in · May 1995 |
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.
Cities covered by KHPX
- Nashville, TN 49 mi southeast
- Evansville, IN 87 mi north
- Louisville, KY 134 mi northeast
- Huntsville, AL 144 mi south-southeast
- Chattanooga, TN 161 mi southeast
- Lexington, KY 177 mi east-northeast
Nearby radars
- KOHX · Nashville, TN 52 mi
- KPAH · Paducah, KY 85 mi
- KVWX · Evansville, IN 108 mi
- KLVX · Louisville, KY 113 mi
- KHTX · Huntsville, AL 142 mi
KHPX radar FAQ
How often does KHPX 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 KHPX?
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 KHPX down?
Radars occasionally go offline for maintenance. When one does, TALON's US radar map fills the gap from neighboring radars (KOHX, KPAH, KVWX).