We start off the first day of February in a split flow pattern across the nation. The upper-level 250 mb wind flow is shown below from the GFS model. This map shows quite well the two branches to the jet stream. The polar jet stream is well north of Colorado, mostly oriented west to east along the U.S. and Canada …

Andy

Andy

Born and raised in St. Louis, Andrew obtained a Ph.D. in Atmospheric Science from the University of Colorado in 2015. From 2015 to 2020, he worked remotely in Boulder as an atmospheric scientist with NOAA's Atlantic Oceanographic and Meteorological Laboratory in Miami. Andy is now a full-time meteorologist.

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