Region Lower 48
United States
Europe
The readings under the map are for the whole map, not only the part shown.
ECMWF · Run 06Z 4 Oct · +24 h · Valid Mon 06Z 5 Oct
Wettest 231 mm at 20.0N 114.0W · Sun 06Z to Mon 06Z
Wettest 227 mm at 20.0N 114.0W · Sun 12Z to Mon 12Z
Wettest 251 mm at 20.0N 115.0W · Sun 18Z to Mon 18Z
Wettest 245 mm at 20.0N 115.0W · Mon 00Z to Tue 00Z
Wettest 234 mm at 20.25N 117.5W · Mon 06Z to Tue 06Z
Wettest 285 mm at 20.0N 118.5W · Mon 12Z to Tue 12Z
Wettest 321 mm at 20.0N 118.5W · Mon 18Z to Tue 18Z
Wettest 273 mm at 20.0N 118.5W · Tue 00Z to Wed 00Z
Wettest 307 mm at 20.25N 121.0W · Tue 06Z to Wed 06Z
Wettest 332 mm at 20.25N 121.0W · Tue 12Z to Wed 12Z
Wettest 319 mm at 20.25N 121.0W · Tue 18Z to Wed 18Z
Wettest 245 mm at 20.25N 121.5W · Wed 00Z to Thu 00Z
Wettest 178 mm at 21.5N 122.25W · Wed 06Z to Thu 06Z
Wettest 144 mm at 22.25N 123.75W · Wed 12Z to Thu 12Z
Wettest 158 mm at 22.5N 124.25W · Wed 18Z to Thu 18Z
Wettest 156 mm at 22.5N 124.25W · Thu 00Z to Fri 00Z
Wettest 134 mm at 23.25N 126.75W · Thu 06Z to Fri 06Z
Wettest 170 mm at 23.25N 127.0W · Thu 12Z to Fri 12Z
Wettest 187 mm at 23.25N 127.75W · Thu 18Z to Fri 18Z
Wettest 188 mm at 23.0N 128.0W · Fri 00Z to Sat 00Z
Wettest 166 mm at 22.75N 128.0W · Fri 06Z to Sat 06Z
One ECMWF run, issued 06Z 4 Oct — played forward 6 hours at a time, from 24 to 144 hours out.
Methodology
Each frame is the precipitation this run puts down in the 24 hours to it — its total at that hour less its total 24 hours before — so the film starts at +24 h, the first frame with a whole day behind it. Liquid-equivalent: snow counts as the water it melts to.
The colours are Tropical Tidbits' scale, so a reader who knows theirs can read this one. Three of its steps are re-shaded: at 0.5 in, at 2 in — where, on theirs, a reader with protanopia sees the 1.75–2 in band and the 2–2.5 in band as one colour — and among the yellows above 12 in. Same hues; the lightness is re-spaced so every step is visible in every common form of colour-blindness.
Six-hourly to 144 hours. ECMWF's 00Z and 12Z runs forecast out to 360 hours, its 06Z and 18Z runs to 144. The frames past the one shown load on demand. Uncorrected model output.
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 the European Centre for Medium-Range Weather Forecasts (ECMWF). 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. Every model's full forecast for any of these cities, or anywhere else, is in the beta: request an invite; it's free during the beta.
Sources and licences
- ECMWF: IFS, from ECMWF's open data. This service is based on data and products of the European Centre for Medium-Range Weather Forecasts (ECMWF). Source: www.ecmwf.int. This ECMWF data is published under a Creative Commons Attribution 4.0 International (CC BY 4.0). ECMWF does not accept any liability whatsoever for any error or omission in the data, their availability, or for any loss or damage arising from their 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.