MSLP + precip rate
Region Lower 48
United States
Europe
The readings under the map are for the whole map, not only the part shown.
Surface pressure (hPa) and instantaneous precip rate (mm/h)
ECMWF · Run 18Z 15 Oct · +0 h · Valid Thu 18Z 15 Oct
ECMWF · Run 18Z 15 Oct · +0 h · Valid Thu 18Z 15 Oct
Surface pressure (hPa) and instantaneous precip rate (mm/h)
Heaviest rate 16.42 mm/h, near 39.25N 87.0W · unshaded ground is where the model has under 0.25 mm/h falling
Heaviest rate 15.71 mm/h, near 33.0N 99.25W · unshaded ground is where the model has under 0.25 mm/h falling
Heaviest rate 32.32 mm/h, near 29.25N 101.75W · unshaded ground is where the model has under 0.25 mm/h falling
Heaviest rate 19.58 mm/h, near 20.25N 109.5W · unshaded ground is where the model has under 0.25 mm/h falling
Heaviest rate 17.41 mm/h, near 22.75N 90.75W · unshaded ground is where the model has under 0.25 mm/h falling
Heaviest rate 19.34 mm/h, near 44.0N 67.5W · unshaded ground is where the model has under 0.25 mm/h falling
Heaviest rate 16.43 mm/h, near 22.25N 89.0W · unshaded ground is where the model has under 0.25 mm/h falling
Heaviest rate 13.14 mm/h, near 24.0N 95.75W · unshaded ground is where the model has under 0.25 mm/h falling
Heaviest rate 15.29 mm/h, near 38.0N 67.75W · unshaded ground is where the model has under 0.25 mm/h falling
Heaviest rate 23.88 mm/h, near 34.5N 73.0W · unshaded ground is where the model has under 0.25 mm/h falling
Heaviest rate 47.72 mm/h, near 34.5N 70.75W · unshaded ground is where the model has under 0.25 mm/h falling
Heaviest rate 41.75 mm/h, near 20.25N 95.5W · unshaded ground is where the model has under 0.25 mm/h falling
Heaviest rate 27.76 mm/h, near 34.25N 68.5W · unshaded ground is where the model has under 0.25 mm/h falling
Heaviest rate 36.05 mm/h, near 34.5N 68.0W · unshaded ground is where the model has under 0.25 mm/h falling
Heaviest rate 46.72 mm/h, near 35.25N 67.75W · unshaded ground is where the model has under 0.25 mm/h falling
Heaviest rate 59.06 mm/h, near 36.25N 66.75W · unshaded ground is where the model has under 0.25 mm/h falling
Heaviest rate 28.23 mm/h, near 37.25N 66.75W · unshaded ground is where the model has under 0.25 mm/h falling
Heaviest rate 36.26 mm/h, near 38.75N 67.0W · unshaded ground is where the model has under 0.25 mm/h falling
Heaviest rate 19.79 mm/h, near 40.25N 67.25W · unshaded ground is where the model has under 0.25 mm/h falling
Heaviest rate 19.53 mm/h, near 38.75N 69.5W · unshaded ground is where the model has under 0.25 mm/h falling
Heaviest rate 16.84 mm/h, near 22.75N 96.0W · unshaded ground is where the model has under 0.25 mm/h falling
Heaviest rate 16.88 mm/h, near 38.0N 72.5W · unshaded ground is where the model has under 0.25 mm/h falling
Heaviest rate 17.08 mm/h, near 39.25N 70.25W · unshaded ground is where the model has under 0.25 mm/h falling
Heaviest rate 16.09 mm/h, near 20.5N 97.0W · unshaded ground is where the model has under 0.25 mm/h falling
Heaviest rate 17.42 mm/h, near 40.5N 65.0W · unshaded ground is where the model has under 0.25 mm/h falling
One ECMWF run — issued 18Z 15 Oct — played forward 6 hours at a time, from its analysis to 144 hours out.
Methodology
Step forward and the pressure pattern moves, and the precipitation under it moves with it: that motion is the weather this run forecasts, not the forecast changing — Forecast Evolution is the film for that. Same chart grammar as the surface analysis: the same reduction, the same 2 hPa interval, the same frame; only the forecast hour varies. 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.
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.