Absolute PWAT
ECMWF · Run 12Z 14 Oct · +0 h · Valid Wed 12Z 14 Oct
Region Southern Plains
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 2.64 in at 20.0N 108.25W
Deepest column 2.60 in at 20.0N 108.75W
Deepest column 2.42 in near Santiago Ixcuintla, Mexico
Deepest column 2.40 in, 25 mi W of Compostela, Mexico
Deepest column 2.40 in, 25 mi W of Compostela, Mexico
Deepest column 2.39 in near Banes, Cuba
Deepest column 2.48 in near Tecuala, Mexico
Deepest column 2.88 in at 20.0N 108.5W
Deepest column 2.61 in at 20.25N 108.5W
Deepest column 2.80 in, 150 mi S of Cabo San Lucas, Mexico
Deepest column 2.59 in, 95 mi S of Cabo San Lucas, Mexico
Deepest column 2.76 in, 95 mi SW of Cabo San Lucas, Mexico
Deepest column 2.53 in, 65 mi ESE of Cozumel, Mexico
Deepest column 2.51 in, 110 mi E of Isla Mujeres, Mexico
Deepest column 2.55 in, 95 mi NE of Veracruz, Mexico
Deepest column 2.53 in, 155 mi NNW of Paraíso, Mexico
Deepest column 2.50 in, 105 mi NNW of Frontera, Mexico
Deepest column 2.56 in, 160 mi NW of Pinar del Rio, Cuba
Deepest column 2.52 in, 180 mi N of Isla Mujeres, Mexico
Deepest column 2.60 in, 140 mi N of Isla Mujeres, Mexico
Deepest column 2.56 in, 70 mi NW of Halachó, Mexico
Deepest column 2.56 in, 115 mi NNW of Ciudad del Carmen, Mexico
Deepest column 2.50 in, 115 mi NNW of Ciudad del Carmen, Mexico
Deepest column 2.45 in, 95 mi N of Ciudad del Carmen, Mexico
Deepest column 2.41 in, 95 mi NNW of Ciudad del Carmen, Mexico
Deepest column 2.45 in, 95 mi NNW of Ciudad del Carmen, Mexico
Deepest column 2.42 in, 100 mi N of Frontera, Mexico
Deepest column 2.48 in, 115 mi NNW of Paraíso, Mexico
Deepest column 2.48 in, 120 mi NNW of Paraíso, Mexico
Deepest column 2.38 in, 140 mi NNE of Santiago Tuxtla, Mexico
Deepest column 2.28 in, 60 mi SW of Camagüey, Cuba
Deepest column 2.29 in, 125 mi NNE of Banes, Cuba
Deepest column 2.25 in, 60 mi SSW of Ciego de Ávila, Cuba
Deepest column 2.37 in at 20.0N 116.0W
Deepest column 2.40 in at 20.0N 115.75W
Deepest column 2.45 in at 20.25N 115.25W
Deepest column 2.47 in at 20.0N 115.5W
Deepest column 2.39 in at 20.5N 117.75W
Deepest column 2.38 in, 30 mi NNE of Monte Cristi, Dominican Republic
Deepest column 2.34 in at 20.25N 118.0W
Deepest column 2.36 in at 20.0N 117.25W
Deepest column 2.38 in at 20.25N 117.0W
Deepest column 2.36 in at 20.0N 117.0W
Deepest column 2.26 in, 170 mi NNE of Banes, Cuba
Deepest column 2.30 in at 24.5N 68.25W
Deepest column 2.41 in, 140 mi NE of Grand Turk, Turks and Caicos Islands
Deepest column 2.36 in, 55 mi NW of Grand Turk, Turks and Caicos Islands
Deepest column 2.20 in at 20.0N 116.75W
Deepest column 2.37 in at 20.25N 117.0W
Deepest column 2.45 in at 20.75N 116.0W
Deepest column 2.38 in at 21.5N 114.5W
Deepest column 2.33 in, 55 mi SW of Puerto Vallarta, Mexico
Deepest column 2.41 in, 30 mi NW of Puerto Vallarta, Mexico
Deepest column 2.49 in, 25 mi W of Compostela, Mexico
Deepest column 2.66 in, 110 mi WSW of Puerto Vallarta, Mexico
Deepest column 2.97 in, 80 mi W of Puerto Vallarta, Mexico
Deepest column 2.56 in, 25 mi W of Compostela, Mexico
Deepest column 2.28 in, 55 mi SW of Puerto Vallarta, Mexico
Deepest column 2.31 in, 45 mi S of Puerto Vallarta, Mexico
Deepest column 2.14 in, 30 mi ESE of Beeville, Texas
Deepest column 2.33 in, 25 mi 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.