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JMA/GPV Weather Maps

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About these Weather Maps

These are generated from Grid Point Value(GPV) data provided from Japan Meteorological Agency (JMA) calculated with "Global Spectral Model (GSM)" and "Meso Scale Model (MSM)". GPV data are obtained from "GFD-DENNOU Club" and the drawing program is GrADS.

These weather maps are automatically generated from GPV data which are the results of the computer simulation in JMA. So some contents may be inconsistent with the weather forecast of JMA or other weather forecasting services. And please use the data according to the fact that the results always include errors. We shall not be responsible for any loss, damages and troubles from using the data of this site.

It is forbidden to use on business. GFD-DENNOU Club requires with the following announce in its website. These data are provided for institutes or schools. If you use these data frequently, please purchase from Japan Meteorological Business Support Center(JMBSC) directly. (The original is written in Japanese) Using on business offends against this requirement. So it is forbidden.

Contents of the Weather Maps

The data of "GSM, Asia" and 1"GSM, Japan" are provided for 4 times per one day. The initial times are 00Z, 06Z, 12Z and 18Z, i.e., 9, 15, 21, 3 in JST.

The data of "MSM, Japan" are provided for 8 times per one day. The initial times are 00Z, 03Z, 06Z, 09Z, 12Z, 15Z, 18Z and 21Z i.e., 9, 12, 15, 18, 21, 0, 3, 6 in JST.

Data Type Drawn Area Time Interval
GSM, Asia Precipitation, Surface Pressure, Winds About Lat.10° N ∼ lat.60° N About Lon.100° E ∼ lon.170° E FT0 ∼ FT84(3.5 days after) with 6 hours interval FT96 ∼ FT192(8 days after) with 12 hours interval(*) * The data from FT96 ∼ FT264 are provided only in the case whose initial time is 12Z (21JST).
Surface Temperature
300hPa Height, Vorticity, Winds
500hPa Height, Vorticity, Winds
850hPa Temperature, Winds, 700hPa Vertical Velocity(hPa/s)
500hPa Temperature, 700hPa Dew Point Depression
500hPa Height, Temperature
850hPa Height, Temperature
850hPa Winds, Equivalent Potential Temperature
925hPa Winds, Equivalent Potential Temperature
GSM, Japan Precipitation, Surface Pressure, Winds Lat.20° N ∼ lat.50° N Lon.120° E ∼ lon.150° E FT0 ∼ FT84(3.5 days after) with 1 hour interval FT87 ∼ FT264(11 days after) with 3 hours interval * The data from FT87 ∼ FT264 are provided only in the case whose initial time is 12Z (21JST).
Surface Temperature
500hPa Height, Vorticity, Winds FT0 ∼ FT84(3.5 days after) with 3 hours interval FT90 ∼ FT264(11 days after) with 6 hours interval* The data from FT90 ∼ FT264 are provided only in the case whose initial time is 12Z (21JST).
850hPa Temperature, Winds, 700hPa Vertical Velocity(hPa/s)
500hPa Temperature, 700hPa Dew Point Depression
500hPa Height, Temperature
850hPa Height, Temperature
850hPa Winds, Equivalent Potential Temperature
925hPa Winds, Equivalent Potential Temperature
MSM, Japan Precipitation, Surface Pressure, Winds Lat.22.5° N ∼ lat.47.5° N Lon.120° E ∼ lon.150° E FT0 ∼ FT39(39 hours after) with 1 hour interval
Surface Temperature
500hPa Height, Vorticity, Winds FT0 ∼ FT39(39 hours after) with 3 hours interval
850hPa Temperature, Winds, 700hPa Vertical Velocity(hPa/s)
500hPa Temperature, 700hPa Dew Point Depression
500hPa Height, Temperature
850hPa Height, Temperature
850hPa Winds, Equivalent Potential Temperature
925hPa Winds, Equivalent Potential Temperature