I'm on the road with limited connectivity today. Perhaps some of you can comment on the source of this incredibly dry air.
Tuesday, May 15, 2012
Outrageously Dry
An incredibly dry airmass has settled over northern Utah. Currently at the Salt Lake International Airport (KSLC), the temperature is 88ºF with a dewpoint of only 3.2ºF. Earlier, it was 90ºF with a dewpoint of -2.2ºF. That's a relative humidity of only 3%.
I'm on the road with limited connectivity today. Perhaps some of you can comment on the source of this incredibly dry air.
I'm on the road with limited connectivity today. Perhaps some of you can comment on the source of this incredibly dry air.
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Just got back from a trip to the Caribbean, so I noticed that it is dry. Looks like large-scale subsidence is making it very dry all over the western U.S. I think that the cold pool region off the coast of California and northwest Mexico is a major source of some very dry air masses over the western U.S., when all the moisture is confined to a shallow marine layer and it gets extremely dry above this due to very strong subsidence there. It seems like this effect is strongest during May and June, from what I have noticed by looking at 700-mb moisture fields. Don't know whether that is the major source of dry air this time or not.
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