Region Northern Plains
United States
Europe
The readings under the map are for the whole map, not only the part shown.
GFS · Run 06Z 4 Oct · +0 h · Valid Sun 06Z 4 Oct
Deepest column 2.97 in at 20.0N 113.5W
Deepest column 2.96 in at 20.0N 113.75W
Deepest column 3.00 in at 20.5N 113.5W
Deepest column 3.01 in at 20.0N 113.75W
Deepest column 3.03 in at 20.0N 114.25W
Deepest column 3.06 in at 21.25N 114.75W
Deepest column 3.03 in at 20.25N 116.25W
Deepest column 2.97 in at 20.25N 116.75W
Deepest column 3.04 in at 20.5N 118.25W
Deepest column 2.97 in at 21.25N 118.75W
Deepest column 2.96 in at 20.5N 119.5W
Deepest column 2.96 in at 21.75N 119.25W
Deepest column 2.92 in at 21.75N 119.75W
Deepest column 2.89 in at 21.25N 120.0W
Deepest column 2.89 in at 22.0N 122.25W
Deepest column 2.87 in at 20.75N 122.75W
Deepest column 2.86 in at 22.0N 122.25W
Deepest column 2.81 in at 21.75N 124.75W
Deepest column 2.82 in, 135 mi WNW of Progreso, Mexico
Deepest column 2.88 in, 145 mi NW of Progreso, Mexico
Deepest column 2.88 in, 145 mi NW of Progreso, Mexico
Deepest column 2.86 in at 23.75N 91.25W
Deepest column 2.90 in at 24.5N 90.5W
Deepest column 2.89 in at 25.75N 90.25W
Deepest column 2.83 in, 165 mi S of Houma, Louisiana
Deepest column 3.03 in, 60 mi SSE of Houma, Louisiana
Deepest column 2.83 in near Biloxi, Mississippi
Deepest column 2.74 in at 23.5N 122.0W
Deepest column 2.77 in at 24.25N 121.5W
Deepest column 2.76 in, 20 mi N of Nautla, Mexico
Deepest column 2.65 in, 20 mi NNW of Tuxpam, Mexico
Deepest column 2.66 in, 50 mi SE of Wilmington, North Carolina
Deepest column 2.89 in, 165 mi S of Cabo San Lucas, Mexico
Deepest column 3.09 in, 115 mi S of Cabo San Lucas, Mexico
Deepest column 3.00 in, 40 mi WSW of Cabo San Lucas, Mexico
Deepest column 3.10 in, 45 mi SSW of La Paz, Mexico
Deepest column 2.94 in, 25 mi NNW of La Paz, Mexico
Deepest column 3.08 in near Loreto, Mexico
Deepest column 2.86 in, 65 mi NE of Loreto, Mexico
Deepest column 2.79 in, 45 mi S of Guaymas, Mexico
Deepest column 2.83 in, 30 mi SSE of Guaymas, Mexico
Deepest column 2.67 in near Ciudad Obregon, Mexico
Deepest column 2.42 in at 28.5N 71.0W
Deepest column 2.46 in, 60 mi WSW of Pinar del Rio, Cuba
Deepest column 2.42 in, 160 mi SW of Hamilton, Bermuda
Deepest column 2.44 in, 130 mi SW of Hamilton, Bermuda
Deepest column 2.49 in, 20 mi N of Isla Mujeres, Mexico
Deepest column 2.39 in near Puerto Vallarta, Mexico
Deepest column 2.50 in, 25 mi WNW of Bryan, Texas
Deepest column 2.59 in, 25 mi SW of Bay City, Texas
Deepest column 2.61 in, 65 mi S of Freeport, Texas
Deepest column 2.60 in near San Fernando, Mexico
Deepest column 2.49 in, 125 mi SSE of Houma, Louisiana
Deepest column 2.51 in at 24.0N 94.0W
Deepest column 2.45 in at 24.5N 70.0W
Deepest column 2.61 in, 20 mi ENE of Motul, Mexico
Deepest column 2.52 in, 65 mi NNE of Nautla, Mexico
Deepest column 2.56 in, 120 mi NE of Nautla, Mexico
Deepest column 2.49 in, 185 mi WNW of Progreso, Mexico
Deepest column 2.53 in, 25 mi WNW of Tizimín, Mexico
Deepest column 2.47 in, 115 mi NNW of Paraíso, Mexico
Deepest column 2.48 in, 95 mi NNW of Ciudad del Carmen, Mexico
Deepest column 2.48 in, 65 mi W of Campeche, Mexico
Deepest column 2.41 in, 40 mi SSW of Cozumel, Mexico
Deepest column 2.44 in, 75 mi W of Manzanillo, Cuba
One GFS run, issued 06Z 4 Oct — played forward 6 hours at a time, from the analysis to 384 hours out.
Methodology
PWAT — precipitable water — is how much water vapour the air overhead holds, as the depth of water it would make if it all fell at once.
Six-hourly to 384 hours. GFS forecasts out to 384 hours.
The colours are a depth scale, the same everywhere: the cream band is a depth, not a normal. The same column is deep for Salt Lake City and shallow for Miami, so this map cannot say whether the air is unusual — the Relative to normal chart ranks each place against its own record, and that is the one to read for that.
GFS files this field as PWAT and ECMWF as total column water vapour, the same quantity. 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 NOAA. 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
- NOAA: GFS, from NOAA's NOMADS server. US government data, not subject to copyright (NOAA/NWS terms of 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.