Can I climb todayToday: Yes. Dry for the rest of the day.
How to read the dial
- Dry
- Fast‑drying sectors only
- Wet
- Now
- When it dries
Blok Sessions
Today's weather
The week ahead
Email me when it's dry
Only these emails, and every one has a stop link. Privacy
Browse by country
The best-known areas today
Climb indoors instead
Bouldering gyms near the forest, for a wet day.
Before you go
Northwest Branch after rain
Northwest Branch: schist boulders along a river, in Maryland, United States. The nearest other areas here are Governor Stable (125 km), Lorimer Park (204 km) and Haycock Mountain (223 km).
Is Northwest Branch dry today?
The answer at the top of this page comes from NOAA's forecast and how fast schist dries, and it's updated through the day. Nobody checks the rock in person, so touch the holds before you climb.
How long does Northwest Branch take to dry after rain?
Northwest Branch is schist. It sheds rain quickly, though cracks, pockets and tufas can seep for days after heavy rain. These times are the model's estimates, tuned on Fontainebleau sandstone and not checked here. After a proper soaking (2 mm of rain or more), sunny, windy boulders need about 7 hours of dry weather, most of the boulders about 12 hours, and shaded ones about 17 hours. A light shower needs less. Wind, sun and dry air shorten the wait, and above about 92% humidity the model won't call the rock dry.
Can you climb at Northwest Branch when the rock is wet?
Wet rock is slick, and pockets and cracks seep for days. If the holds feel greasy, come back later.