Know when the rain gets here.
LeadTime watches the radar around you, works out whether that storm is going to hit or pass, and tells you how long you've got — in minutes, out loud. Lightning, flash floods, tornado and severe-storm warnings always get through.
Free to use on any phone or tablet. No account needed. US coverage (NOAA radar).
Lead time, not just a map
Every radar frame is tracked. You get “rain in 40 minutes from the west”, “passing to the north — won't reach you”, or “weakening, likely to fizzle”. Not a blob you have to interpret.
Alerts that find you
A chime when rain is on the way, snoozable for 1, 2, 4 or 8 hours. Tornado, severe thunderstorm, flood, hurricane and blizzard warnings always sound, snoozed or not. With a phone, alerts arrive even with the screen off.
Briefings you can listen to
“Here's your camp briefing…” — a spoken rundown shaped by what you're doing: awning advice for the RV, wind shifts and legal light for hunting, tides for the beach, snow on the ground for the slopes. English or Spanish. Hands full? Say “Bumblebee, briefing.”
Three things, every couple of minutes
Watch the radar
NOAA's quality-controlled national radar mosaic, the same data the forecasters use, refreshed every two minutes. No ground clutter, no guessing.
Track the storms
LeadTime compares frames to measure where each storm is moving and how fast, and whether it's strengthening or falling apart — then projects that onto your spot.
Tell you plainly
Hit or miss, arrival time, how long it'll last. Plus lightning within 10, 20 and 30 miles, NWS alerts, floods, wildfires and smoke on the same map.
Whatever you're out there doing
🏕️ Camping
Rain timing, overnight low, wind for the tarp, lightning for the tent.
🚐 RV
Gusts and the awning, hail, driving wind for a tall rig.
🦌 Hunting
Wind direction and shifts, pressure trend, legal light, moon, snow for tracking.
🥾 Hiking · running · cycling
Thunder timing, feels-like temperature, daylight left, trails and topo on the map.
🏖️ Beach
Tides, rip-current risk, UV, water temperature, tropical storms.
⛷️ Skiing
Snow on the ground from the nearest SNOTEL site, new snow, wind chill, whiteout, lift wind holds.
A radar display for the campsite, ready out of the box
A rugged 8-inch tablet with LeadTime preloaded, a mount and a 12-volt cable. Plug it in at the picnic table or on the RV dash; it finds itself by GPS, stays awake, and chimes before the rain. A year of Pro included.
Bundle details
Questions people ask
Is it accurate?
Arrival times are typically within 10–15 minutes for organised storms 30–90 minutes out, and better as they get closer. Scattered summer showers that form and die in place are harder — LeadTime says when its confidence is low rather than pretending. More on accuracy.
Does it work without cell service?
The radar needs a connection (cell or campground Wi‑Fi). It keeps the last forecast, radar and briefing if the signal drops, and says how old they are.
Does it replace NOAA weather radio?
No. LeadTime relays official NWS warnings and adds radar-based lead time, but a weather radio works with no network at all. Carry one where it matters.
Where does it work?
The continental US, Alaska, Hawaii and Puerto Rico — anywhere NOAA radar covers.
What does it cost?
The web app is free. Pro adds screen-off alerts that follow you, lightning, more layers and model-written briefings. Pricing.
Launching soon
The web app is live today. The tablet bundle, Pro, and the phone apps are coming — leave an email and we'll tell you when.
Launch updates: email hello@getleadtime.app with “updates” in the subject.