I'm not sure, NWS does a good job of interpolating for regions without a weather station, even taking into account coastal effects and elevation. In my experience (in a rural, montane environment) it works pretty well if you specify your coordinates, not just the zipcode.
Have there any been any comparisons of the commercial services to NWS? That would be an interesting casual study.
I am. Spend some time in the desert southwest, particularly on indian reservations. You'll find that NWS temperatures are regularly off by 10-20°. But that's still better than Weather Underground, which can be off by as much as 50°.
One thing I will give the NWS credit for is the wind forecasts. Those things are spot-on at least 90% of the time.
I've lived in 15 cities in a dozen states, and what I've noticed is that if you're in a large city, or east of a large city, the forecasts are great.
But if you're west of a large city, or in a smaller city, it's hit-or-miss. This makes sense, as the better forecasters tend to end up in the larger markets.
I see. That's interesting, you may want to send those comments to your regional forecast office. They have several citizen-science programs like SKYWARN and their ham radio observers, that help them improve their regional forecasts.
Opposite experience here. Services like Dark Sky and Wunderground are so inaccurate up here in Alaska that it's dangerous. NWS is also often pretty wrong but way less wrong than anything else. Interesting to hear your
No. Almost every medium and large city in the United States was built because of its access to water and shipping. New York, Chicago, San Francisco, Houston, PORTland, Boston, Pittsburgh, Cleveland, Charleston, and on and on and on.
Even smaller cities like Minneapolis, Buffalo, Sioux Falls, Albany, and hundreds more are located where they are because waterfalls and rapids made them the farthest extent of water travel before rapids or waterfalls or other hazards made the route too difficult.
Your blanket statement doesn't always hold. This is more accurate.