Soundings › Topeka
Topeka, KS weather balloon
Launch of 2026-10-28 00Z (evening launch, US time) · ground level 886 ft above sea level, 69°F at launch
What it means
Freezing level about 11,300 ft up
Rain stays rain at the ground. Hail has less warm air to melt in, so hail from strong storms can reach the ground bigger.
Wind at crane height: 9 mph from the SE
At about 260 ft the wind was 9 mph, against 7 mph at the ground. Wind at height is often much stronger than at the ground, especially at night and in the morning. Many outdoor aerial lifts are rated for winds up to 28 mph; crane limits depend on the crane and the load, so check its manual.
Some storm fuel (197 J/kg CAPE)
If something lifts the air (heating, a front, hills), storms could grow. The wind doesn't change much with height, so storms that form would tend to be short-lived. Whether storms form at all depends on other things too.
0.97 inches of water in the air
About average moisture. Rain amounts would be modest unless a big storm system arrives.
Temperature and moisture by height
Temperature Dew point Freezing (32°F)
Heights are above the ground. The closer the two lines, the more humid; where they touch, there's cloud.
Wind by height
| At the ground | SE 7 mph |
|---|---|
| About 260 ft (crane and lift height) | SE 9 mph |
| 1,000 ft | SSE 14 mph |
| 3,000 ft | SSW 19 mph |
| 5,000 ft | SW 24 mph |
| 10,000 ft | WSW 30 mph |
| 18,000 ft | W 24 mph |
| 30,000 ft | WSW 34 mph |
Direction is where the wind comes from.
- Storm fuel (CAPE)
- 197 J/kg
- Wind change, ground to 20,000 ft
- 33 mph
- Water in the air
- 0.97 in
- Freezing level
- 11,300 ft
About soundings
Balloons go up at about 6 a.m. and 6 p.m. Central time (12Z and 00Z) and take about 2 hours to climb. The numbers show what the air was doing at launch, so they are a snapshot, not a forecast. Conditions change through the day, especially in the afternoon and when a front passes.
Wind at crane height is the measured wind about 260 ft (80 m) up. Storm fuel (CAPE) is how strongly a rising bubble of air would keep rising. Wind change with height (shear) helps storms last and turn severe. Water in the air (precipitable water) is how much rain the whole column would make if it all fell. Notes like these are a planning aid, not an official forecast or warning. For warnings, follow the National Weather Service.
Want this for a job? AtmosDays Plus and Pro show the HRRR model's hour-by-hour wind at crane height for each jobsite, for the next 2 days. See how it works.
Data: NOAA National Weather Service upper-air sounding, via Iowa State University's Iowa Environmental Mesonet. Explanations by AtmosDays; storm fuel is for the most unstable air in the lowest 10,000 ft or so.