I really like the radar views, but am having difficulty understanding the differences. They are all slightly different and I am not sure why.
There seem to be four views:
- Radar reflectivity
- 1k radar
- 4k radar
All of these seem to run both into the future and into the past. I had thought Radar Reflectivity would have been “actuals”, past only, based on what the radars actually detect. But it runs into the future, so what exactly is it? I also notice that my radar programs (I like MyRadar), which shows only the past / current view is different than Radar Reflectivity.
Now on to 1k and 4k radar. I had thought these were forecasts. But they seem to also run into the past. Is this actual? Or is it the forecast from the point in the furthest point in the past I can access? For example, right now it is Wednesday at 1700. I can run these backwards to about 0100 (last night). But doesn’t HRRR update every hour? In which case my interpretation doesn’t make any sense. I am clearly confused.
Additionally, what is the difference between 1k and 4k. I had at first thought it was resolution (k = kilometer), but I am not confident of that interpretation. Some of the rain shapes are different, not just higher / lower resolution versions of each other. Additionally, if it is resolution, why would I every want the lower resolution one? I am a bit lost on this difference.
Finally, given all this confusion, what exactly is the Composite? I had figured it was real time / historical radar with a forecast, but that interpretation doesn’t really seem to make sense. The forecasts on the composite don’t seem to match any of the others. (Nor does the history).
I really like the interface and ability to see these different elements, but don’t know what the various radars are telling me.