Region Lower 48
United States
Europe
The readings under the map are for the whole map, not only the part shown.
ECMWF · Run 06Z 2 Oct · +0 h · Valid Fri 06Z 2 Oct
Nothing on the map has reached 0.25 mm yet · heaviest rate 26.86 mm/h at Fri 06Z
Wettest so far 138 mm near Montemorelos, Mexico · heaviest rate 21.51 mm/h at Fri 12Z
Wettest so far 160 mm near Montemorelos, Mexico · heaviest rate 14.64 mm/h at Fri 18Z
Wettest so far 172 mm near Montemorelos, Mexico · heaviest rate 18.64 mm/h at Sat 00Z
Wettest so far 186 mm near Montemorelos, Mexico · heaviest rate 13.93 mm/h at Sat 06Z
Wettest so far 192 mm near Montemorelos, Mexico · heaviest rate 15.14 mm/h at Sat 12Z
Wettest so far 192 mm near Montemorelos, Mexico · heaviest rate 20.94 mm/h at Sat 18Z
Wettest so far 202 mm near Montemorelos, Mexico · heaviest rate 15.04 mm/h at Sun 00Z
Wettest so far 215 mm near Montemorelos, Mexico · heaviest rate 35.2 mm/h at Sun 06Z
Wettest so far 237 mm near Montemorelos, Mexico · heaviest rate 25.33 mm/h at Sun 12Z
Wettest so far 258 mm near Montemorelos, Mexico · heaviest rate 29.96 mm/h at Sun 18Z
Wettest so far 283 mm near Montemorelos, Mexico · heaviest rate 40.34 mm/h at Mon 00Z
Wettest so far 293 mm near Montemorelos, Mexico · heaviest rate 39.94 mm/h at Mon 06Z
Wettest so far 326 mm near Montemorelos, Mexico · heaviest rate 29.41 mm/h at Mon 12Z
Wettest so far 351 mm near Montemorelos, Mexico · heaviest rate 23.54 mm/h at Mon 18Z
Wettest so far 358 mm near Montemorelos, Mexico · heaviest rate 33.34 mm/h at Tue 00Z
Wettest so far 360 mm near Montemorelos, Mexico · heaviest rate 23.98 mm/h at Tue 06Z
Wettest so far 360 mm near Montemorelos, Mexico · heaviest rate 37.15 mm/h at Tue 12Z
Wettest so far 360 mm near Montemorelos, Mexico · heaviest rate 19.0 mm/h at Tue 18Z
Wettest so far 360 mm near Montemorelos, Mexico · heaviest rate 24.44 mm/h at Wed 00Z
Wettest so far 360 mm near Montemorelos, Mexico · heaviest rate 18.81 mm/h at Wed 06Z
One ECMWF run, issued 06Z 2 Oct — played forward 6 hours at a time, from its analysis to 120 hours out.
Methodology
Two of this site's films laid one over the other. Underneath is the Run total: everything this run puts down from its start to each frame, on Tropical Tidbits' scale. On top is the pressure Time lapse: the precipitation falling at that frame's time, on the radar scale, and the sea-level pressure at that time in 2 hPa isobars. So the rate moves on as the film plays and leaves its total behind it. The first frame is the analysis, where the run has put nothing down yet.
The total is a window and the rate and the pressure are instants, all read at the frame's valid time: the total runs from the start of the run to that time. Liquid-equivalent: snow counts as the water it melts to. GFS and ECMWF only, the two models here that publish an instantaneous rate.
Six-hourly to 120 hours. ECMWF's 06Z run forecasts out to 144 hours; this film stops at 120. 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.