Region Lower 48
The readings under the map are for the whole map, not only the part shown.
GEM · Run 00Z 1 Oct · +6 h · Valid Thu 06Z 1 Oct
Wettest 101 mm near Omaha, Nebraska · to Thu 06Z
Wettest 155 mm, 80 km NE of La Cruz, Mexico · to Thu 12Z
Wettest 159 mm, 80 km NE of La Cruz, Mexico · to Thu 18Z
Wettest 162 mm, 80 km NE of La Cruz, Mexico · to Fri 00Z
Wettest 286 mm, 35 km W of Beeville, Texas · to Fri 06Z
Wettest 305 mm, 35 km W of Beeville, Texas · to Fri 12Z
Wettest 305 mm, 35 km W of Beeville, Texas · to Fri 18Z
Wettest 310 mm, 35 km W of Beeville, Texas · to Sat 00Z
Wettest 310 mm, 35 km W of Beeville, Texas · to Sat 06Z
Wettest 311 mm, 35 km W of Beeville, Texas · to Sat 12Z
Wettest 311 mm, 35 km W of Beeville, Texas · to Sat 18Z
Wettest 318 mm, 35 km W of Beeville, Texas · to Sun 00Z
Wettest 327 mm, 35 km W of Beeville, Texas · to Sun 06Z
Wettest 337 mm, 35 km W of Beeville, Texas · to Sun 12Z
Wettest 338 mm, 35 km W of Beeville, Texas · to Sun 18Z
Wettest 339 mm, 35 km W of Beeville, Texas · to Mon 00Z
Wettest 339 mm, 35 km W of Beeville, Texas · to Mon 06Z
Wettest 340 mm, 35 km W of Beeville, Texas · to Mon 12Z
Wettest 358 mm, 75 km NNE of Nautla, Mexico · to Mon 18Z
Wettest 383 mm, 85 km E of Tuxpam, Mexico · to Tue 00Z
Wettest 383 mm, 85 km E of Tuxpam, Mexico · to Tue 06Z
Wettest 399 mm, 85 km E of Tuxpam, Mexico · to Tue 12Z
Wettest 415 mm, 75 km NNE of Nautla, Mexico · to Tue 18Z
Wettest 434 mm, 75 km NNE of Nautla, Mexico · to Wed 00Z
Wettest 449 mm, 75 km NNE of Nautla, Mexico · to Wed 06Z
Wettest 458 mm, 75 km NNE of Nautla, Mexico · to Wed 12Z
Wettest 477 mm, 75 km NNE of Nautla, Mexico · to Wed 18Z
Wettest 484 mm, 75 km NNE of Nautla, Mexico · to Thu 00Z
Wettest 500 mm, 75 km NNE of Nautla, Mexico · to Thu 06Z
Wettest 518 mm, 75 km NNE of Nautla, Mexico · to Thu 12Z
Wettest 604 mm, 75 km NNE of Nautla, Mexico · to Thu 18Z
Wettest 649 mm, 75 km NNE of Nautla, Mexico · to Fri 00Z
Wettest 664 mm, 75 km NNE of Nautla, Mexico · to Fri 06Z
Wettest 673 mm, 75 km NNE of Nautla, Mexico · to Fri 12Z
Wettest 686 mm, 75 km NNE of Nautla, Mexico · to Fri 18Z
Wettest 697 mm, 75 km NNE of Nautla, Mexico · to Sat 00Z
Wettest 724 mm, 85 km E of Tuxpam, Mexico · to Sat 06Z
Wettest 727 mm, 85 km E of Tuxpam, Mexico · to Sat 12Z
Wettest 729 mm, 85 km E of Tuxpam, Mexico · to Sat 18Z
Wettest 730 mm, 85 km E of Tuxpam, Mexico · to Sun 00Z
One GEM run, issued 00Z 1 Oct — played forward 6 hours at a time, from 6 to 240 hours out.
Methodology
Each frame is everything this run puts down from its start to that hour, so the map fills in as the film plays and its last frame is the run's whole total. 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.
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.