mswx//nerds Monte Sano weather ops
mswx@montesano:~$ ./bootstrap --mode=nerds
[ ok ] plateau composite MSWX · 5 ridge sensors online
[ ok ] valley composite HSVWX · 6 valley sensors online
[ ok ] forecast bus · 7 models · NWS · ECMWF · GFS · ICON · HRRR · NBM
[ ok ] radar nowcast · MRMS @ 2-min · KHTX level-II
mswx nerd mode
Hyperlocal weather instrumentation for the Monte Sano plateau — 1500 ft above the Tennessee Valley, where the regional forecast stops working. This is the engine room. New here? Run the decoder first.
mountain · MSWX
plateau composite
valley · HSVWX
downtown
Δ mtn − valley
cooler up top?
pool water
club sensor
rain today
chance
sky
cloud

instruments pick a tool

Graph
Every forecast and every observation — mountain and valley — on one timeline. Pan back through history, zoom, toggle any line, and rewind any forecast to grade what it said in advance.
the big chart
Radar
Live MRMS rain nowcast. Is it raining, when does it start or stop, and how sure are we — measured by how tightly the last ten scans agree.
live · 2-min
Network
Every sensor we read, grouped by composite. See how MSWX (the mountain) and HSVWX (the valley) are built from their member stations, live.
11 stations
Pool
The Monte Sano Club pool water temperature, measured by a sensor in the pump room and forecast a week out by an energy-balance model.
physics model
Models
The seven weather models we pull, ranked by how much we trust each one — what GFS, ECMWF, ICON, HRRR, NBM and the NWS forecaster actually are, and what we use them for.
primer
Decoder
MSWX? HSVWX? Lapse rate, inversion, trimmed mean, MAE, POP, nowcast, GHI. Every acronym and bit of jargon on this site, in plain English.
start here
Verify
Are the forecasts any good? Pick a past window and see what every source predicted, laid over what actually happened. Scoreboard included.
accountability
Inversions
The nights the mountain is warmer than the valley below it. Cold air pools downtown while the plateau sits in the warmer air aloft — and the regional forecast gets it wrong.
the whole point
Lapse
How fast temperature drops per 1000 ft of elevation, by hour of day. The textbook says 3.5°F. Monte Sano doesn't always agree.
elevation
Δ
Deltas
Station-to-station temperature differences. How much warmer or cooler is each site than a reference, and how consistent is that gap.
comparison
Records
Hottest and coldest readings per station over the trailing window. Who runs hot, who runs cold, who swings the most.
extremes
Frost
The last spring frost each year, mountain vs valley. The plateau frosts later — quantified, so gardeners up here know how much shorter their season runs.
growing season
what is this place?

The front page of mswx.net is for the neighborhood — one temperature, one pool number, will-it-rain. Nerd mode is everything underneath it. Eleven live sensors, seven forecast models, a radar nowcast, a pool physics model, and five years of history — all the raw machinery, plotted and explained. Nothing here is gated; it's a free neighborhood app and this is the fun part.

Built and run by a neighbor, not a meteorologist — so everything has a plain-English decoder entry. The data is public: there's a read-only JSON API if you want to build on it.