Region Lower 48
The readings under the map are for the whole map, not only the part shown.
Surface pressure (hPa) and instantaneous precip rate (mm/h)
GFS · Run 00Z 1 Oct · +0 h · Valid Thu 00Z 1 Oct
Surface pressure (hPa) and instantaneous precip rate (mm/h)
Heaviest rate 26.38 mm/h, near 40.75N 97.75W · unshaded ground is where the model has under 0.25 mm/h falling
Heaviest rate 30.66 mm/h, near 23.5N 106.25W · unshaded ground is where the model has under 0.25 mm/h falling
Heaviest rate 32.61 mm/h, near 23.5N 107.25W · unshaded ground is where the model has under 0.25 mm/h falling
Heaviest rate 28.38 mm/h, near 34.0N 96.0W · unshaded ground is where the model has under 0.25 mm/h falling
Heaviest rate 44.5 mm/h, near 28.5N 98.25W · unshaded ground is where the model has under 0.25 mm/h falling
Heaviest rate 42.2 mm/h, near 30.5N 98.0W · unshaded ground is where the model has under 0.25 mm/h falling
Heaviest rate 34.33 mm/h, near 26.5N 99.25W · unshaded ground is where the model has under 0.25 mm/h falling
Heaviest rate 14.56 mm/h, near 37.0N 89.5W · unshaded ground is where the model has under 0.25 mm/h falling
Heaviest rate 30.06 mm/h, near 20.75N 90.5W · unshaded ground is where the model has under 0.25 mm/h falling
Heaviest rate 35.5 mm/h, near 20.0N 111.0W · unshaded ground is where the model has under 0.25 mm/h falling
Heaviest rate 44.67 mm/h, near 20.0N 111.5W · unshaded ground is where the model has under 0.25 mm/h falling
Heaviest rate 29.05 mm/h, near 20.0N 112.25W · unshaded ground is where the model has under 0.25 mm/h falling
Heaviest rate 23.0 mm/h, near 20.0N 113.0W · unshaded ground is where the model has under 0.25 mm/h falling
Heaviest rate 31.02 mm/h, near 31.0N 89.25W · unshaded ground is where the model has under 0.25 mm/h falling
Heaviest rate 20.41 mm/h, near 20.5N 114.5W · unshaded ground is where the model has under 0.25 mm/h falling
Heaviest rate 30.08 mm/h, near 20.0N 114.5W · unshaded ground is where the model has under 0.25 mm/h falling
Heaviest rate 18.74 mm/h, near 30.75N 87.0W · unshaded ground is where the model has under 0.25 mm/h falling
Heaviest rate 26.79 mm/h, near 31.25N 86.0W · unshaded ground is where the model has under 0.25 mm/h falling
Heaviest rate 33.36 mm/h, near 34.5N 74.0W · unshaded ground is where the model has under 0.25 mm/h falling
Heaviest rate 23.64 mm/h, near 30.75N 85.75W · unshaded ground is where the model has under 0.25 mm/h falling
Heaviest rate 20.12 mm/h, near 34.0N 70.25W · unshaded ground is where the model has under 0.25 mm/h falling
One GFS run — issued 00Z 1 Oct — played forward 6 hours at a time, from its analysis to 120 hours out.
Methodology
Step forward and the pressure pattern moves, and the precipitation under it moves with it: that motion is the weather this run forecasts, not the forecast changing — Forecast Evolution is the film for that. Same chart grammar as the surface analysis: the same reduction, the same 4 hPa interval, the same frame; only the forecast hour varies. Six-hourly to 120 hours. GFS forecasts out to 384 hours; this film stops at 120. The frames past the one shown load on demand.
This map is drawn from model output we store ourselves, not from anyone's picture of it, and is based on data and products of NOAA. The per-city read of the same day — which cities the models are fighting about, and what the discussion makes of it — is on the national page.
Sources and licences
- NOAA: GFS, from NOAA's NOMADS server. US government data, not subject to copyright (NOAA/NWS terms of use).
What we change: each field is cropped to the frame these maps share when we download it, and each map then smooths, contours, differences or ranks those numbers as its Methodology says. These are our maps of the providers' numbers, not their products, and none of them has reviewed or endorsed this site.
Coastlines, borders, lakes and place names: Natural Earth, public domain.