Absolute PWAT
ECMWF · Run 12Z 14 Oct · +0 h · Valid Wed 12Z 14 Oct
Region Lower 48
United States
Europe
The readings under the map are for the whole map, not only the part shown.
ECMWF · Run 12Z 14 Oct · +0 h · Valid Wed 12Z 14 Oct
Deepest column 67 mm at 20.0N 108.25W
Deepest column 66 mm at 20.0N 108.75W
Deepest column 62 mm near Santiago Ixcuintla, Mexico
Deepest column 61 mm, 35 km W of Compostela, Mexico
Deepest column 61 mm, 35 km W of Compostela, Mexico
Deepest column 61 mm near Banes, Cuba
Deepest column 63 mm near Tecuala, Mexico
Deepest column 73 mm at 20.0N 108.5W
Deepest column 66 mm at 20.25N 108.5W
Deepest column 71 mm, 240 km S of Cabo San Lucas, Mexico
Deepest column 66 mm, 155 km S of Cabo San Lucas, Mexico
Deepest column 70 mm, 155 km SW of Cabo San Lucas, Mexico
Deepest column 64 mm, 105 km ESE of Cozumel, Mexico
Deepest column 64 mm, 175 km E of Isla Mujeres, Mexico
Deepest column 65 mm, 150 km NE of Veracruz, Mexico
Deepest column 64 mm, 245 km NNW of Paraíso, Mexico
Deepest column 64 mm, 170 km NNW of Frontera, Mexico
Deepest column 65 mm, 255 km NW of Pinar del Rio, Cuba
Deepest column 64 mm, 285 km N of Isla Mujeres, Mexico
Deepest column 66 mm, 225 km N of Isla Mujeres, Mexico
Deepest column 65 mm, 110 km NW of Halachó, Mexico
Deepest column 65 mm, 185 km NNW of Ciudad del Carmen, Mexico
Deepest column 64 mm, 185 km NNW of Ciudad del Carmen, Mexico
Deepest column 62 mm, 150 km N of Ciudad del Carmen, Mexico
Deepest column 61 mm, 155 km NNW of Ciudad del Carmen, Mexico
Deepest column 62 mm, 155 km NNW of Ciudad del Carmen, Mexico
Deepest column 61 mm, 160 km N of Frontera, Mexico
Deepest column 63 mm, 185 km NNW of Paraíso, Mexico
Deepest column 63 mm, 195 km NNW of Paraíso, Mexico
Deepest column 60 mm, 225 km NNE of Santiago Tuxtla, Mexico
Deepest column 58 mm, 95 km SW of Camagüey, Cuba
Deepest column 58 mm, 205 km NNE of Banes, Cuba
Deepest column 57 mm, 95 km SSW of Ciego de Ávila, Cuba
Deepest column 60 mm at 20.0N 116.0W
Deepest column 61 mm at 20.0N 115.75W
Deepest column 62 mm at 20.25N 115.25W
Deepest column 63 mm at 20.0N 115.5W
Deepest column 61 mm at 20.5N 117.75W
Deepest column 61 mm, 45 km NNE of Monte Cristi, Dominican Republic
Deepest column 59 mm at 20.25N 118.0W
Deepest column 60 mm at 20.0N 117.25W
Deepest column 61 mm at 20.25N 117.0W
Deepest column 60 mm at 20.0N 117.0W
Deepest column 57 mm, 270 km NNE of Banes, Cuba
Deepest column 58 mm at 24.5N 68.25W
Deepest column 61 mm, 220 km NE of Grand Turk, Turks and Caicos Islands
Deepest column 60 mm, 85 km NW of Grand Turk, Turks and Caicos Islands
Deepest column 56 mm at 20.0N 116.75W
Deepest column 60 mm at 20.25N 117.0W
Deepest column 62 mm at 20.75N 116.0W
Deepest column 61 mm at 21.5N 114.5W
Deepest column 59 mm, 90 km SW of Puerto Vallarta, Mexico
Deepest column 61 mm, 45 km NW of Puerto Vallarta, Mexico
Deepest column 63 mm, 35 km W of Compostela, Mexico
Deepest column 68 mm, 175 km WSW of Puerto Vallarta, Mexico
Deepest column 75 mm, 130 km W of Puerto Vallarta, Mexico
Deepest column 65 mm, 35 km W of Compostela, Mexico
Deepest column 58 mm, 90 km SW of Puerto Vallarta, Mexico
Deepest column 59 mm, 75 km S of Puerto Vallarta, Mexico
Deepest column 54 mm, 50 km ESE of Beeville, Texas
Deepest column 59 mm, 40 km SSW of Port Lavaca, Texas
One ECMWF run, issued 12Z 14 Oct — played forward 6 hours at a time, from the analysis to 360 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 360 hours. ECMWF's 00Z and 12Z runs forecast out to 360 hours, its 06Z and 18Z runs to 144.
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 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.