MSLP + precip rate
Region Europe
United States
Europe
The readings under the map are for the whole map, not only the part shown.
Surface pressure (hPa) and 6-hour averaged precip rate (in/h)
GEM · Run 00Z 16 Oct · +6 h · Valid Fri 06Z 16 Oct
GEM · Run 00Z 16 Oct · +6 h · Valid Fri 06Z 16 Oct
Surface pressure (hPa) and 6-hour averaged precip rate (in/h)
Heaviest 6-hour mean 0.246 in/h, near 43.35N 40.95E · unshaded ground is where the model has under 0.01 in/h falling
Heaviest 6-hour mean 0.174 in/h, near 67.2N 16.2E · unshaded ground is where the model has under 0.01 in/h falling
Heaviest 6-hour mean 0.141 in/h, near 38.1N 31.65E · unshaded ground is where the model has under 0.01 in/h falling
Heaviest 6-hour mean 0.209 in/h, near 40.65N 33.45E · unshaded ground is where the model has under 0.01 in/h falling
Heaviest 6-hour mean 0.342 in/h, near 42.0N 30.0E · unshaded ground is where the model has under 0.01 in/h falling
Heaviest 6-hour mean 0.283 in/h, near 40.2N 27.6E · unshaded ground is where the model has under 0.01 in/h falling
Heaviest 6-hour mean 0.264 in/h, near 41.1N 29.1E · unshaded ground is where the model has under 0.01 in/h falling
Heaviest 6-hour mean 0.379 in/h, near 63.6N 19.2W · unshaded ground is where the model has under 0.01 in/h falling
Heaviest 6-hour mean 0.598 in/h, near 42.75N 31.8E · unshaded ground is where the model has under 0.01 in/h falling
Heaviest 6-hour mean 0.293 in/h, near 36.45N 3.45W · unshaded ground is where the model has under 0.01 in/h falling
Heaviest 6-hour mean 0.45 in/h, near 63.6N 19.35W · unshaded ground is where the model has under 0.01 in/h falling
Heaviest 6-hour mean 0.566 in/h, near 45.9N 8.25E · unshaded ground is where the model has under 0.01 in/h falling
Heaviest 6-hour mean 0.986 in/h, near 39.0N 0.45E · unshaded ground is where the model has under 0.01 in/h falling
Heaviest 6-hour mean 0.305 in/h, near 39.3N 1.05E · unshaded ground is where the model has under 0.01 in/h falling
Heaviest 6-hour mean 0.358 in/h, near 69.15N 16.8E · unshaded ground is where the model has under 0.01 in/h falling
Heaviest 6-hour mean 0.438 in/h, near 64.05N 16.95W · unshaded ground is where the model has under 0.01 in/h falling
Heaviest 6-hour mean 0.458 in/h, near 44.1N 4.35E · unshaded ground is where the model has under 0.01 in/h falling
Heaviest 6-hour mean 0.49 in/h, near 43.5N 6.75E · unshaded ground is where the model has under 0.01 in/h falling
Heaviest 6-hour mean 0.524 in/h, near 44.25N 9.6E · unshaded ground is where the model has under 0.01 in/h falling
Heaviest 6-hour mean 0.588 in/h, near 41.55N 13.2E · unshaded ground is where the model has under 0.01 in/h falling
One GEM run — issued 00Z 16 Oct — played forward 6 hours at a time, from 6 hours out to 120 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 4 hPa interval, the same frame; only the forecast hour varies. Six-hourly to 120 hours. GEM forecasts out to 240 hours; this film stops at 120. The frames past the one shown load on demand. GEM publishes no precipitation rate, so the shading here is the 6-hour mean rate — the run's total precipitation at each frame less the total 6 hours before, over 6 — on the same scale as the instant the other models shade with. A mean over 6 hours is smoother and weaker than an instant, so its heavy bands light less often on the same weather; and because no 6-hour bucket ends at the analysis, this film opens at +6 h rather than showing one frame with no rain under it.
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.