<p>No agency is running 1-km forecasts globally... and certainly not out 14 days.  The only 1-km forecasts I have heard of are for small regions and just 2 days. If you can live with coarser data, <a href="https://weather.us/model-charts" rel="nofollow noreferrer">Weather.us</a> has a nice list of available global forecast models out there (below), and they also have a list of regional forecast models.</p>
<p><strong>Global Forecast Models:</strong></p>
<ul>
<li>ECMWF HRES (~ 9 km; 10 days)</li>
<li>ECMWF EPS (~14 km; 10 days)</li>
<li>ICON (~13 km; 7 days)</li>
<li>GFS (~23 km; 15 days)</li>
<li>GEFS (~46 km; 15 days)</li>
<li>UKMO (~17 km; 6 days)</li>
<li>GEM (~22 km; 10 days)</li>
<li>ACCESS-G (~27 km; 10 days)</li>
<li>ARPEGE (~46 km; 5 days)</li>
<li>CMA (~23 km; 10 days)</li>
<li>GDAPS/UM (~10 km; 12 days)</li>
</ul>

CC BY-SA 4.0
2021-08-05T06:50:13.733Z
2021-08-05T06:50:13.733Z
f.thorpe
<p>I am interested in weather predictions at 1-day, 1-week and 2-weeks, ideally with a 1-kilometer resolution in various regions around the globe. I am particularly interested in wind speed at 100m.</p>
<p>I am extremely confused on how to choose the best data source for this. Some wild internet browsing presented me several NASA, ECMWF, ... forecasts that are available.</p>
<p>Does anyone know a comprehensive list of all the (possibly free) datasets out there for this kind of problem?</p>

CC BY-SA 4.0
2021-07-30T15:32:24.443Z
Are you looking for weather forecasts or weather model predictions? I generally define forecasts as being human generated, while predictions are weather model guidance.
BarocliniCplusplus
CC BY-SA 4.0
2021-07-30T18:10:32.313Z
Forecasts for what purpose and what area? Please [edit] your question
Jan Doggen
CC BY-SA 4.0
2021-08-02T04:02:53.583Z
@shamalaia consider that models run at 1-km are for a small area of interest and a short time period; it is a very large computational burden.  If you want to use 36-12 km, there is a nice list of models with 7-day forecasts.  Global models are coarse, so location dictates which finer resolution models you can use.
f.thorpe
CC BY-SA 4.0
2021-08-02T06:20:00.083Z
I am aware of that. That is why I said "ideally". To which list are you referring to?
shamalaia
<weather-forecasting><open-data>
weather forecast data: how to know what to choose
shamalaia
# weather forecast data: how to know what to choose

(Asked by: username_0 on 2021-07-30)

I am interested in weather predictions at 1-day, 1-week and 2-weeks, ideally with a 1-kilometer resolution in various regions around the globe. I am particularly interested in wind speed at 100m.

I am extremely confused on how to choose the best data source for this. Some wild internet browsing presented me several NASA, ECMWF, ... forecasts that are available.

Does anyone know a comprehensive list of all the (possibly free) datasets out there for this kind of problem?

**Tags:** weather-forecasting, open-data

> **Comments:**
> **username_1**: Are you looking for weather forecasts or weather model predictions? I generally define forecasts as being human generated, while predictions are weather model guidance.  
> **username_2**: Forecasts for what purpose and what area? Please [edit] your question  
> **username_3**: @username_0 consider that models run at 1-km are for a small area of interest and a short time period; it is a very large computational burden.  If you want to use 36-12 km, there is a nice list of models with 7-day forecasts.  Global models are coarse, so location dictates which finer resolution models you can use.  
> **username_0**: I am aware of that. That is why I said "ideally". To which list are you referring to?  

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## 1 answers

### Answer by username_3 on 2021-08-05. Score: 4

No agency is running 1-km forecasts globally... and certainly not out 14 days. The only 1-km forecasts I have heard of are for small regions and just 2 days. If you can live with coarser data, [Weather.us](https://weather.us/model-charts) has a nice list of available global forecast models out there (below), and they also have a list of regional forecast models.

**Global Forecast Models:**

* ECMWF HRES (~ 9 km; 10 days)
* ECMWF EPS (~14 km; 10 days)
* ICON (~13 km; 7 days)
* GFS (~23 km; 15 days)
* GEFS (~46 km; 15 days)
* UKMO (~17 km; 6 days)
* GEM (~22 km; 10 days)
* ACCESS-G (~27 km; 10 days)
* ARPEGE (~46 km; 5 days)
* CMA (~23 km; 10 days)
* GDAPS/UM (~10 km; 12 days)


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