Region Lower 48
The readings under the map are for the whole map, not only the part shown.
ECMWF · Run 18Z 30 Sep · +24 h · Valid Thu 18Z 1 Oct
Wettest 166 mm, 60 km W of Ft. Worth, Texas · Wed 18Z to Thu 18Z
Wettest 165 mm, 60 km W of Ft. Worth, Texas · Thu 00Z to Fri 00Z
Wettest 163 mm, 80 km W of Columbia, Missouri · Thu 06Z to Fri 06Z
Wettest 162 mm, 80 km W of Columbia, Missouri · Thu 12Z to Fri 12Z
Wettest 143 mm at 20.0N 109.75W · Thu 18Z to Fri 18Z
Wettest 150 mm, 35 km SSE of Sabinas Hidalgo, Mexico · Fri 00Z to Sat 00Z
Wettest 176 mm, 35 km SSE of Sabinas Hidalgo, Mexico · Fri 06Z to Sat 06Z
Wettest 166 mm, 35 km SSE of Sabinas Hidalgo, Mexico · Fri 12Z to Sat 12Z
Wettest 171 mm, 35 km SSE of Sabinas Hidalgo, Mexico · Fri 18Z to Sat 18Z
Wettest 117 mm at 20.0N 112.25W · Sat 00Z to Sun 00Z
Wettest 115 mm at 20.0N 114.0W · Sat 06Z to Sun 06Z
Wettest 119 mm at 20.0N 114.75W · Sat 12Z to Sun 12Z
Wettest 116 mm at 20.0N 114.75W · Sat 18Z to Sun 18Z
Wettest 102 mm near Freeport, Texas · Sun 00Z to Mon 00Z
Wettest 100 mm, 50 km SE of Corpus Christi, Texas · Sun 06Z to Mon 06Z
Wettest 107 mm, 50 km SE of Corpus Christi, Texas · Sun 12Z to Mon 12Z
Wettest 96 mm, 55 km NE of Harlingen, Texas · Sun 18Z to Mon 18Z
Wettest 142 mm, 60 km N of Tuxpam, Mexico · Mon 00Z to Tue 00Z
Wettest 137 mm, 60 km N of Tuxpam, Mexico · Mon 06Z to Tue 06Z
Wettest 134 mm, 60 km N of Tuxpam, Mexico · Mon 12Z to Tue 12Z
Wettest 171 mm at 33.0N 72.5W · Mon 18Z to Tue 18Z
One ECMWF run, issued 18Z 30 Sep — 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.
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.