MSLP + precip rate
GEM · Run 00Z 14 Oct · +6 h · Valid Wed 06Z 14 Oct
Region Southern Plains
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 14 Oct · +6 h · Valid Wed 06Z 14 Oct
Surface pressure (hPa) and 6-hour averaged precip rate (in/h)
Heaviest 6-hour mean 0.553 in/h, near 21.3N 105.0W · unshaded ground is where the model has under 0.01 in/h falling
Heaviest 6-hour mean 0.588 in/h, near 20.1N 108.0W · unshaded ground is where the model has under 0.01 in/h falling
Heaviest 6-hour mean 0.347 in/h, near 39.15N 88.35W · unshaded ground is where the model has under 0.01 in/h falling
Heaviest 6-hour mean 0.32 in/h, near 38.55N 86.85W · unshaded ground is where the model has under 0.01 in/h falling
Heaviest 6-hour mean 0.535 in/h, near 33.75N 100.5W · unshaded ground is where the model has under 0.01 in/h falling
Heaviest 6-hour mean 0.587 in/h, near 35.25N 97.8W · unshaded ground is where the model has under 0.01 in/h falling
Heaviest 6-hour mean 0.289 in/h, near 21.0N 85.2W · unshaded ground is where the model has under 0.01 in/h falling
Heaviest 6-hour mean 0.389 in/h, near 33.45N 99.45W · unshaded ground is where the model has under 0.01 in/h falling
Heaviest 6-hour mean 0.566 in/h, near 28.35N 105.9W · unshaded ground is where the model has under 0.01 in/h falling
Heaviest 6-hour mean 0.589 in/h, near 28.5N 104.55W · unshaded ground is where the model has under 0.01 in/h falling
Heaviest 6-hour mean 0.259 in/h, near 27.45N 95.55W · unshaded ground is where the model has under 0.01 in/h falling
Heaviest 6-hour mean 0.657 in/h, near 20.7N 97.2W · unshaded ground is where the model has under 0.01 in/h falling
Heaviest 6-hour mean 0.548 in/h, near 25.8N 91.2W · unshaded ground is where the model has under 0.01 in/h falling
Heaviest 6-hour mean 0.445 in/h, near 26.7N 89.85W · unshaded ground is where the model has under 0.01 in/h falling
Heaviest 6-hour mean 0.373 in/h, near 25.35N 88.35W · unshaded ground is where the model has under 0.01 in/h falling
Heaviest 6-hour mean 0.491 in/h, near 23.1N 90.15W · unshaded ground is where the model has under 0.01 in/h falling
Heaviest 6-hour mean 0.394 in/h, near 20.1N 89.55W · unshaded ground is where the model has under 0.01 in/h falling
Heaviest 6-hour mean 0.813 in/h, near 20.85N 95.4W · unshaded ground is where the model has under 0.01 in/h falling
Heaviest 6-hour mean 0.69 in/h, near 20.7N 95.85W · unshaded ground is where the model has under 0.01 in/h falling
Heaviest 6-hour mean 0.503 in/h, near 20.25N 95.4W · unshaded ground is where the model has under 0.01 in/h falling
One GEM run — issued 00Z 14 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.