Jun 222009
 

Dewpoints have remained fairly high all month. We broached 50F for the dewpoint on Saturday. The average dewpoint (from Tucson NWS Tracking site) for the day was in the low 40′s. The moisture is trying to stream up from the Gulf of Mexico and is saturating Northern Mexico. It hasn’t quite made it to Arizona in full force, yet. One of the components of the monsoon is the formation of a thermal low pressure system. We are probably missing some heat to cause the lifting of the are to form the low pressure system.

Dones’t it have to get hot before the monsoon starts?

Apr 302009
 

The Pacific Decadal Oscillation(PDO) is a cousin of El Nino Southern Oscillation(ENSO). It operates on a much longer, decadal, time scale. The temperatures of the Northern Pacific Ocean can be a big effect on Arizona’s Precipitation. It has been negative, or cool, for several years. Recently, it has moved more severely in that direction. Here is a recent article about it: The PDO’s influence on Climate Change: How low will it go? I think there is still a valuable question about how the sun’s current low output and activity will effect our precipitation in Northern Arizona. Could the combination of a cooling climate offset the cool phase PDO?

Well, for this weekend, it looks like we could get a little precip on Saturday and Sunday. Small amounts with a slight cooling trend.

Mar 052009
 

Nothing seems to be converging. Any chance for signifcant precip keeps floating out farther into the future. Just some wind and cooler temps seem to be on tap.

But, in the meantime, here is a new article on solar influence: http://www.ilovemycarbondioxide.com/pdf/Willie_Soon-Its_the_Sun_Stupid.pdf.  Enjoy!

Sep 302008
 

Well, here goes.  Solar activity remains low.  Sunspot activity, solar output and the solar wind have all dropped to 50-100 year lows.  All would indicate an over all cooling trend for the planet.  Personally, I thought this drove our weather last winter.

The Pacfic Coast water temps are below normal.  This bodes ill for precipitation.  The Pacific Decadal Oscillation has intensely swung to cold.  Another bad sign for precip.  A weak El Nino may build into the spring.

So, for the next 3-6 months, I would expect colder than normal temperatures, and drier than average precipitation levels.  Notice the “than average” part.  I don’t mean outside normal bounds necessarily.  Just less than average.  Check this post in my forums for an example (http://stu-in-flag.net/forum/index.php?topic=3.msg4#new).  The temperatures will probably be like last winter….brrrr!

This forecast does coincide with the Farmer’s Almanac (http://www.almanac.com/weatherforecast/us/13).  Section 13 cooresponds to Flagstaff and most of Northern Arizona.

However, if you are a skier, I would recommend buying a season pass.  They will probably find a way to open for a fair amount of time.

6 visitors online now
1 guests, 5 bots, 0 members
Max visitors today: 7 at 12:10 am MST
This month: 14 at 08-10-2014 02:10 pm MST
This year: 20 at 07-13-2014 08:41 am MST
All time: 1611 at 04-27-2012 06:53 pm MST

Social Widgets powered by AB-WebLog.com.