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Under My Account (upper right of page) and Display Settings, you can now choose "Remember overlays per session" under Single Image Settings.   So if you pick an overlay, it holds as you switch models.

What is Z-time?

Submitted by MRydzik on Wed, 2016-04-20 07:07

Because weather models are run in different parts of the world and also cover different parts of the world, a universal time concept is preferred.

What is considered “Normal”?

Submitted by MRydzik on Wed, 2016-04-20 07:07

Normal is climatology and is traditionally considered to be the National Weather Service standard 30-year normal, which is currently 1981-2010.  This updates every ten years at the turn of the decade (next one:  2021).  We normally get this climatology from the NOAA reanalysis data set; however, long-lead modeling like the CFS and European weeklies must use a special “hindcast climatology” to help it account for model drift errors and provide more realistic solutions.

What does MaxRes mean?

Submitted by MRydzik on Wed, 2016-04-20 07:06

MaxRes stands for Maximum Resolution and refers to the highest resolution of each model that we provide on the site.  These increased resolution versions of the models are best suited for regional temperature and precipitation variables as well as wind. These files tend to be larger and update slower than the main model files for each cycle.  You can see MaxRes forecasts for individual cities under the Features menu (City Plots).