It&#x27;s not just inadequate computing power. Cliff Mass has a good run-down on his blog: <a href="http:&#x2F;&#x2F;cliffmass.blogspot.com&#x2F;2012&#x2F;03&#x2F;us-fallen-behind-in-numerical-weather.html" rel="nofollow">http:&#x2F;&#x2F;cliffmass.blogspot.com&#x2F;2012&#x2F;03&#x2F;us-fallen-behind-in-nu...</a><p>The number two reason on Cliff&#x27;s list is &quot;The U.S. has used inferior data assimilation&quot;, but that will be changing next week! The Ensemble Kalman Filter goes live next week: <a href="http:&#x2F;&#x2F;www.nws.noaa.gov&#x2F;os&#x2F;notification&#x2F;tin15-43gefs.htm" rel="nofollow">http:&#x2F;&#x2F;www.nws.noaa.gov&#x2F;os&#x2F;notification&#x2F;tin15-43gefs.htm</a><p>It&#x27;s unlikely this will cause an upset (the US is far behind), but it should at least close the gap.