The HB Program and TRC utilize the "Temperature + Humidity Formula" for determining safe playing conditions. The formula is:

--Temperature + Humidity x .4 + 15 = an Index number 
--An Index of 60-80 is considered safe but use caution and take plenty of water breaks

For example, at 90 degrees with 60% humidity:
90 + 60 = 150 x .4 = 60 +15 = 75 (safe, use caution)

Please remember to bring plenty of fluids and be aware that practices may run shorter than scheduled due to weather.