Sendr Radar — Real-Time Crag Weather, Friction & Sending Conditions

Never guess crag conditions again. Sendr Radar cross-references microclimate meteorological data with your project list to identify perfect friction windows, dry spells, and live community activity.

Microclimate Crag Forecasts

General city forecasts do not reflect cliff conditions. Sendr Radar tracks aspect, elevation, shading, and canyon wind funnels to provide hyper-local weather directly at the wall.

Send Probability Friction Index

Calculate rock friction before packing your bag. Sendr's friction index combines temperature, relative humidity, and dew point to score crisp sending friction.

Condition Push Alerts for Monitored Projects

Tag your dream projects and receive automated notifications when optimal friction windows and low humidity align with your rest days.

Live Community Crag Activity & Partner Beacons

See real-time community reports on wet seeps, parking availability, and partner beacons from fellow climbers active at the crag.

Frequently Asked Questions

How does Sendr Radar determine rock friction?
The friction index calculates atmospheric moisture, air temperature, and rock surface dew point to determine the relative grip level of sandstone, granite, and limestone.
How often are weather conditions updated?
Weather telemetry updates hourly from high-resolution microclimate radar and meteorological stations.
Can I receive alerts when conditions at my project are ideal?
Yes, Sendr Pro subscribers can set custom Weather Windows that alert you when dry conditions and prime temperatures align.