Absolute PWAT
Region Lower 48
The readings under the map are for the whole map, not only the part shown.
GFS · Run 00Z 29 Oct · +0 h · Valid Thu 00Z 29 Oct
GFS · Run 00Z 29 Oct · +0 h · Valid Thu 00Z 29 Oct
Deepest column 2.83 in, 110 mi SE of Cabo San Lucas, Mexico
Deepest column 2.65 in, 85 mi SW of Escuinapa, Mexico
Deepest column 2.34 in, 75 mi SSW of Hamilton, Bermuda
Deepest column 2.37 in at 30.0N 70.0W
Deepest column 2.36 in at 30.25N 69.5W
Deepest column 2.33 in, 130 mi WSW of Hamilton, Bermuda
Deepest column 2.26 in at 29.25N 65.0W
Deepest column 2.35 in at 21.5N 132.75W
Deepest column 2.43 in at 21.75N 131.0W
Deepest column 2.39 in at 20.25N 131.25W
Deepest column 2.39 in at 20.5N 129.25W
Deepest column 2.37 in at 22.5N 125.25W
Deepest column 2.32 in at 24.25N 122.0W
Deepest column 2.31 in at 23.25N 119.0W
Deepest column 2.23 in, 130 mi NE of San Juan, Puerto Rico
Deepest column 2.30 in, 140 mi WSW of Sarasota, Florida
Deepest column 2.29 in, 135 mi NE of Samaná, Dominican Republic
Deepest column 2.31 in, 125 mi NE of Samaná, Dominican Republic
Deepest column 2.33 in, 125 mi N of San Juan, Puerto Rico
Deepest column 2.33 in at 21.5N 65.0W
Deepest column 2.34 in, 30 mi ENE of Monte Cristi, Dominican Republic
Deepest column 2.35 in at 22.25N 67.75W
Deepest column 2.41 in at 23.5N 65.25W
Deepest column 2.46 in at 23.75N 65.0W
Deepest column 2.49 in at 24.75N 65.0W
Deepest column 2.39 in, 160 mi ENE of Grand Turk, Turks and Caicos Islands
Deepest column 2.38 in at 23.75N 68.5W
Deepest column 2.43 in at 24.5N 65.0W
Deepest column 2.43 in at 23.75N 65.25W
Deepest column 2.44 in at 23.5N 66.0W
Deepest column 2.43 in at 23.0N 65.25W
Deepest column 2.48 in at 23.5N 67.25W
Deepest column 2.47 in at 28.5N 75.25W
Deepest column 2.51 in at 29.0N 75.0W
Deepest column 2.39 in at 30.25N 74.0W
Deepest column 2.41 in at 23.75N 66.5W
Deepest column 2.38 in at 27.0N 68.5W
Deepest column 2.42 in at 27.0N 68.25W
Deepest column 2.39 in at 22.75N 65.25W
Deepest column 2.36 in at 31.5N 68.25W
Deepest column 2.30 in, 45 mi WNW of Hamilton, Bermuda
Deepest column 2.13 in at 24.75N 65.0W
Deepest column 2.05 in at 24.0N 65.25W
Deepest column 1.98 in, 115 mi NNE of San Juan, Puerto Rico
Deepest column 1.94 in, 120 mi NNE of San Juan, Puerto Rico
Deepest column 1.80 in, 20 mi S of Poza Rica de Hidalgo, Mexico
Deepest column 1.81 in, 50 mi NE of Guantánamo, Cuba
Deepest column 1.76 in, 50 mi NE of Guantánamo, Cuba
Deepest column 1.77 in, 50 mi ENE of Guantánamo, Cuba
Deepest column 1.86 in, 50 mi NNE of Puerto Plata, Dominican Republic
Deepest column 1.98 in, 30 mi ENE of Puerto Plata, Dominican Republic
Deepest column 1.95 in, 90 mi NE of Samaná, Dominican Republic
Deepest column 1.97 in, 185 mi NNW of Grand Turk, Turks and Caicos Islands
Deepest column 1.97 in, 60 mi NNE of Samaná, Dominican Republic
Deepest column 2.01 in at 24.0N 73.25W
Deepest column 2.01 in at 24.75N 73.25W
Deepest column 2.00 in at 25.0N 71.75W
Deepest column 2.02 in at 25.0N 69.75W
Deepest column 1.92 in at 25.5N 70.5W
Deepest column 1.89 in at 25.25N 68.0W
Deepest column 1.94 in, 30 mi ESE of Peto, Mexico
Deepest column 1.96 in, 20 mi NE of Puerto Plata, Dominican Republic
Deepest column 1.92 in, 20 mi NW of Campeche, Mexico
Deepest column 1.86 in, 125 mi NE of Grand Turk, Turks and Caicos Islands
Deepest column 1.93 in, 20 mi NE of Puerto Plata, Dominican Republic
One GFS run, issued 00Z 29 Oct, played forward 6 hours at a time from the analysis to 384 hours out.
Methodology
PWAT (precipitable water) is how much water vapor 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 colors are a depth scale, the same everywhere, so the cream band is an absolute measure that doesn't reflect departure from normal. The same column is deep for Salt Lake City and shallow for Miami; the Relative to normal chart ranks each place against its climatology.
GFS files this field as PWAT and ECMWF as total column water vapor, the same quantity. Uncorrected model output.
This map is drawn from model output we store ourselves, based on data and products of NOAA. Each city's spread for the same day, and the written discussion of it, are 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 licenses
- 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.