Weather Map Maker · Zarr Data Initiative

INGEST SCHEDULE

What weatherzarr pulls from the operational streams and when. Two lanes: the NWS grids that refresh hourly, and the heavier global & ensemble models on the 4×-daily synoptic cycle. Times are the source-tracking cron.

Hourly lane republished every 20 min (:07 :27 :47) · always the freshest source cycle
ModelGridReachFieldsLatest run
NBMNWS · National Blend of Models 2.5 km 11 days · f264hourly→3h→6h temp · apcp · maxt · mint4 vars 18Z · 08/01
NDFDNWS · National Digital Forecast 2.5 km 7 dayshourly + daily temp · qpf · pop · wind · sky · maxt/mint · +14 more22 vars 20Z · 08/01
Synoptic lane 4× daily · 04 · 10 · 16 · 22 ET (08/14/20/02 UTC) · tracking the 00/06/12/18 Z cycles
ModelGridReachFieldsLatest run
GFSNOAA · global 0.25° 10 days · f2403-hourly 2t · mslp · wind10m · apcp4 vars 12Z · 08/01
GEFSNOAA · global ensemble mean 0.5° 16 days · f3846-h · ens mean 2t · mslp · wind10m · apcp4 vars 12Z · 08/01
HRRRNOAA · CONUS convection-allowing 3 km 48 hhourly 2t · refc · wind10m3 vars 18Z · 08/01
RRFSNOAA · CONUS rapid-refresh 3 km 60 hhourly tmp2m · dew2m · pwat3 vars 12Z · 08/01
ECMWF IFSECMWF · HRES open-data 0.25° 10 days · f2403-h → 6-h 2t · 2d · mslp · wind · tp · tcc · z500 · t850 · jet11 vars 12Z · 08/01
ECMWF AIFSECMWF · AI forecast 0.25° 15 days · f3606-hourly 2t · tp2 vars 12Z · 08/01
ECMWF ENSECMWF · ensemble 0.25° 15 days · f3606-h · 51 members 2t · tp · mx2t · mn2t4 vars 00Z · 08/01
ECMWF ENS · dailyECMWF · ensemble day-summaries 0.25° 15 daysdaily local hi/lo tmax · tmin (local calendar)2 vars 00Z · 08/01
Companion raw archives (not Zarr — kept for on-demand extraction): the full NBM core GRIB run mirrors hourly to the US bucket (72 h rolling); NDFD GRIB mirrors to a 7-day Virginia cold archive; and the NBM station text bulletins (NBH/NBS/NBE/NBX/NBP) are archived hourly.
Every store opens with one line: xr.open_zarr("https://weatherzarr.com/data/<model>/<YYYYMMDD>/<HH>/spatial/<var>.zarr")