DopplerNav puts Level 2 radar, live warnings with storm motion, high-resolution models and ground-truth cameras on one fast map. It's built for the people who head toward the weather, and for everyone they're watching out for.
What the chase apps show, and what they leave out.
We ran three apps at once in the field and still pieced the picture together by hand. DopplerNav brings the essentials together in one place, then adds what none of them do.
Level 2 radar, every tilt
Any of the 159 WSR-88D sites, decoded from the raw volume: all elevations, storm-relative velocity, correlation coefficient for debris, ZDR and velocity unfolding.
Warnings that move
NWS warning polygons with the storm's own motion parsed and projected forward, alongside SPC outlooks and live storm reports. Every app receives this data, but none of the others draw it.
MRMS & rotation tracks
National mosaic, hail size, VIL and rotation tracks that show where rotation has already been, plus storm cells tracked 30 minutes out, including the ones nobody has warned yet.
HRRR & satellite
Simulated reflectivity, updraft helicity, CAPE and gusts at 3 km out to 18 hours, with GOES imagery that reads the day before radar has anything to show.
Ground truth
Around 17,000 traffic cameras, nearly 10,000 of them streaming live video, live storm reports and NWS damage surveys, aircraft bending around convection, and surface CAPE and dew point at a glance. Plus a 3D globe when you want the big picture.
Intercept routing Next
Turning a warning into a route: where to be, how to get there, and when to back off. That's the piece no chase app has, and it's what we're building next.
159NEXRAD radars, nearest first
14Elevations on a typical volume
9.9kTraffic cameras streaming live video
18 hHRRR at 3 km resolution
Our story
Why we do this.
DopplerNav is a passion project. It started with one afternoon in Clarksville, Tennessee.
December 9, 2023 · Clarksville, TN
No warning.
A tornado touched down in Clarksville without warning. Brett was outside in his vehicle, unprotected, about 100 yards away, as it leveled its first building: a strip mall off Fort Campbell Boulevard, with people inside several of its businesses.
One hundred yards, and nothing on the phone to say it was coming.
EF3 damage
The strip mall off Fort Campbell Blvd the next day. Photo: NOAA / NWS Damage Assessment Toolkit, public domain.
Same storm · Home
Then it reached our street.
The same tornado crossed the neighborhood where the rest of our family was at that moment. It jumped over our house. Two streets over, homes were destroyed.
Some of our neighbors lost everything that day. We were spared, and we've never taken that lightly.
Henry Place Blvd, Clarksville, December 10, 2023. Photo: NOAA / NWS Nashville, public domain.
What came after
A calling.
Something started for both of us that day. Aubree decided she was going to become a meteorologist. Together we started volunteering with the Clarksville Jeep Crew, showing up for our community when the weather turns.
We learned fast that the tools weren't built for the people out in it. So we started building our own.
Clarksville Jeep Crew recovery team briefing.
A night call-out.
Today
Weather support, in every form we can give it.
DopplerNav is the tool we wished we'd had that afternoon. Alongside it, we support our community in person.
Field supportOn the road during severe weather, in the right place with the right information.
Community engagementHelping neighbors understand the weather and be ready for it.
VolunteeringRecovery and response with the Clarksville Jeep Crew.
ResearchLearning from every storm, and building what we learn into DopplerNav.
The chase vehicle.
Who we are
A father, a daughter, and a shared obsession with the sky.
Brett Berry
Storm chaser · Builder
Storm chaser and Clarksville Jeep Crew volunteer. Brett builds DopplerNav and field-tests it in the Doppler Jeep, where it has to work on the road and on a tablet.
Aubree Berry
Future meteorologist · Co-builder
Aubree has been set on becoming a meteorologist since December 2023. She works on DopplerNav as its second developer and helps decide what a forecaster-in-training actually needs on screen.
Plans
Free while we build it with you.
Everything is free during early access. Paid plans will come later to keep the servers running, and early members will hear about them first.
Early access
$0while in early access
Create an account, confirm your email, and you're on the radar.
Level 2 radar at every elevation, from all 159 sites
Warnings with storm motion, SPC outlooks and reports
DopplerNav
