NFR For the weather nerds

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RRSmith

RRSmith

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For those of you that enjoy the various weather forecast sites such as Windy, the NAM/NAMnest forecast models have been retired and replaced with the RRFS (Rapid Refresh Forecast System). The RRFS covers a 3-kilometer grid (meaning it's high resolution) and generates an 18 hour rapid refresh forecast every hour, with extended forecasts up to 84 hours which runs 4x a day (00z, 06z, 12z, 18z) The old NAM would update only 4 times in a 24 hour period. It'll be interesting to see how this new model performs.
 
RRSmith said:
For those of you that enjoy the various weather forecast sites such as Windy, the NAM/NAMnest forecast models have been retired and replaced with the RRFS (Rapid Refresh Forecast System). The RRFS covers a 3-kilometer grid (meaning it's high resolution) and generates an 18 hour rapid refresh forecast every hour, with extended forecasts up to 84 hours which runs 4x a day (00z, 06z, 12z, 18z) The old NAM would update only 4 times in a 24 hour period. It'll be interesting to see how this new model performs.
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Bob,
This just means they have more opportunities for incorrect forecasts. 😉🤣
All joking aside, it will be interesting to see if this is an improvement over the old system.
When you looked at NAM, HRRR and the Euro model side by side, some days it seemed like they were forecasting for different plants they varied so much.
SF
 
I'm a regular at Leech Lake at the summit of White Pass. Forecasting something at the border of two very different climates and at the summit of a pass, is iffy at best. I actually find the high res forecasts to be worse, especially for wind gusts. I commonly look at the comparison graph and make my own estimate.
 
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