Region Lower 48
United States
Europe
The readings under the map are for the whole map, not only the part shown.
GEM · Run 12Z 4 Oct · +24 h · Valid Mon 12Z 5 Oct
Wettest 174 mm, 45 km WSW of Panama City, Florida · Sun 12Z to Mon 12Z
Wettest 142 mm, 115 km SE of Galveston, Texas · Sun 18Z to Mon 18Z
Wettest 137 mm, 175 km SSW of New Iberia, Louisiana · Mon 00Z to Tue 00Z
Wettest 148 mm, 30 km NE of Tamazunchale, Mexico · Mon 06Z to Tue 06Z
Wettest 150 mm, 30 km NE of Tamazunchale, Mexico · Mon 12Z to Tue 12Z
Wettest 137 mm, 85 km E of Tuxpam, Mexico · Mon 18Z to Tue 18Z
Wettest 207 mm, 85 km NE of Tuxpam, Mexico · Tue 00Z to Wed 00Z
Wettest 212 mm, 85 km NE of Tuxpam, Mexico · Tue 06Z to Wed 06Z
Wettest 281 mm at 20.1N 121.05W · Tue 12Z to Wed 12Z
Wettest 283 mm at 20.1N 121.05W · Tue 18Z to Wed 18Z
Wettest 271 mm at 20.1N 121.05W · Wed 00Z to Thu 00Z
Wettest 148 mm at 20.1N 121.05W · Wed 06Z to Thu 06Z
Wettest 138 mm, 35 km NNW of Sagua la Grande, Cuba · Wed 12Z to Thu 12Z
Wettest 138 mm, 35 km NNW of Coral Springs, Florida · Wed 18Z to Thu 18Z
Wettest 134 mm, 35 km NNW of Coral Springs, Florida · Thu 00Z to Fri 00Z
Wettest 111 mm, 35 km SW of Compostela, Mexico · Thu 06Z to Fri 06Z
Wettest 130 mm at 21.45N 126.15W · Thu 12Z to Fri 12Z
Wettest 149 mm at 22.65N 126.9W · Thu 18Z to Fri 18Z
Wettest 192 mm at 22.8N 127.05W · Fri 00Z to Sat 00Z
Wettest 231 mm, 90 km SSW of Pensacola, Florida · Fri 06Z to Sat 06Z
Wettest 244 mm, 90 km SSW of Pensacola, Florida · Fri 12Z to Sat 12Z
Wettest 293 mm near New Orleans, Louisiana · Fri 18Z to Sat 18Z
Wettest 338 mm near New Orleans, Louisiana · Sat 00Z to Sun 00Z
Wettest 341 mm, 50 km NW of Gulfport, Mississippi · Sat 06Z to Sun 06Z
Wettest 259 mm, 65 km NNW of Mobile, Alabama · Sat 12Z to Sun 12Z
Wettest 185 mm, 50 km SSE of Puerto Vallarta, Mexico · Sat 18Z to Sun 18Z
Wettest 175 mm, 50 km SSE of Puerto Vallarta, Mexico · Sun 00Z to Mon 00Z
Wettest 177 mm, 50 km SSE of Puerto Vallarta, Mexico · Sun 06Z to Mon 06Z
Wettest 147 mm, 40 km ENE of Santiago Ixcuintla, Mexico · Sun 12Z to Mon 12Z
Wettest 86 mm at 21.3N 127.35W · Sun 18Z to Mon 18Z
Wettest 90 mm at 21.3N 127.35W · Mon 00Z to Tue 00Z
Wettest 86 mm at 21.45N 127.5W · Mon 06Z to Tue 06Z
Wettest 91 mm, 290 km ESE of Matamoros, Mexico · Mon 12Z to Tue 12Z
Wettest 85 mm, 290 km ESE of Matamoros, Mexico · Mon 18Z to Tue 18Z
Wettest 77 mm, 280 km ESE of Matamoros, Mexico · Tue 00Z to Wed 00Z
Wettest 72 mm, 60 km E of Aguascalientes, Mexico · Tue 06Z to Wed 06Z
Wettest 82 mm, 80 km NE of Guadalajara, Mexico · Tue 12Z to Wed 12Z
One GEM run, issued 12Z 4 Oct — played forward 6 hours at a time, from 24 to 240 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 240 hours. GEM forecasts out to 240 hours. 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 Environment and Climate Change Canada. 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
- Environment and Climate Change Canada: GEM, from the MSC Datamart. Data Source: Environment and Climate Change Canada, under its Data Services End-use Licence.
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.