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SOURCE
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ERA5
Reanalysis
ERA5 Reanalysis — 0.25° grid, from Copernicus
HRRR
Forecast
HRRR Forecast — ~3 km resolution, CONUS
NOAA / GFS
Global
GFS Forecast — 0.25°, North America
Extreme Events
1899–2023
Historical heat waves & cold snaps, with animations