THERMAL TRACEHunt Planner

Thermal Trace Hunt home · Install & feedback · Public beta — account login coming soon

Choose your hunting area Use My GPS, upload coordinates, or zoom in

➤ warming · uphill ➤ cooling · downhill ➤ wind-led ➤ weak transition➤ possible lee disturbance ▣ terrain feature ● waypoint ◆ convergence

WIND FROM

PREVAILING WIND5 mph

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Update airflow after I move the map

Internet connection required for airflow.

Field verification

At the waypoint, release milkweed and record where it travels. Repeat before sunlight reaches the slope, during the transition and 30 minutes later.

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WHERE DID IT TRAVEL? VERTICAL BEHAVIOR

Review the hunt area

Sun exposure & moon phase

Sun exposure will be calculated after terrain loads.

Rain and pressure context loads with weather.

Sun and shade use USGS elevations, date and time. Milkweed reports do not change the shared airflow formula. Observations are saved on this device for review; they are not automatically collected from other users.

Map key & airflow details

Hold map to drop pin Arrowheads and moving dashes point where air may travel Refresh app files

Simulated airflow · field-check before relying on it. Actual wind, thermals, and scent movement may differ at your location and change quickly. Model limits and field use

Temperature history & field sensors

Temperature history loading…

Ground cover

Automatic cover uses USFS/MRLC 2025 tree canopy estimates at each location. Manual choices apply to the whole view. Tree cover reduces modeled sunlight and wind influence, not measured wind speed. Coefficients need field calibration.

Tree-cover estimate not loaded.

Wind transition test

From 8 mph, the wind component follows the terrain and gradually takes over, reaching the exposed-terrain wind mode at 11 mph. Paths follow the downwind direction through valleys and across ridges. This is a simulation, not measured under-canopy wind.

Ground condition scenario Simulate a constant air temperature

°F. A constant temperature has no warming trend. Ground settings apply to this view as a scenario, not mapped observations.

Import field sensor readings

Shielded air temperature only—not soil, leaf, surface or phone battery temperature. Import CSV, or restore a Thermal Trace JSON export. Files stay on this device; export and import on your other device to transfer them. No automatic account sync.

CSV or Thermal Trace JSON

Sensor name / position Latitude Longitude Timestamp column Air-temperature column File temperature units UTC offset for timestamps without a zone

Eastern daylight: −04:00; Eastern standard: −05:00. Choose the offset the logger used. Split files spanning a clock change unless each timestamp includes its own offset. CSV: header on first row; ISO timestamps or MM/DD/YYYY with time. Other export layouts need reformatting.

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Close-up relief uses USGS elevation, including LiDAR-derived terrain where available. Fine samples load across the view; native resolution varies.

Choose an area to load airflow · v64

TERRAIN TYPE

Choose an area

Zoom in, use My GPS, or upload coordinates to sample local terrain. Your saved scouting pins stay on this device.

The northwest-facing slope should remain cool early, extending downhill drainage after sunrise.

CURRENT RECOMMENDATION

Start above the draw

During falling thermals, avoid placing the hunter below the trail where scent can enter the feeder draw and move toward the creek. Confirm with milkweed.