Monthly Archives: May 2011

Possible UHI effect at Barrow Alaska – 25 May 2011

Posted on 25 May 2011 by

With a NE wind this morning the town of Barrow Alaska lies downwind of the Climate Reference Network site (BARRO) and upwind of the ASOS site (PABR) located on the southwest side of town.  Could UHI effects explain the rather … Continue reading →

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Eureka at 80 N reaches freezing point

Posted on 23 May 2011 by

Yesterday (22 May 2011) Eureka on Ellesmere Island reached the freezing point for the 1st time since 9 Sept 2010 with a high temperature of 33 F. Eureka Nunavut, May 2011: DY STA   TP HHMM N CIG VSBY    WEA   SLP    … Continue reading →

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Cold April/May 2011 in Seattle Washington

Posted on 23 May 2011 by

With barely more than a week to go in April/May 2011 here is the tally of days below, near, and above normal in Seattle (KSEA): 45 – below normal 7 – near normal (-1 to +1 deg F departure) 0 … Continue reading →

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Wet May 2011 in Miles City Montana

Posted on 22 May 2011 by

Miles City Montana with 7.50 inches of precipitation since 8 May has accumulated more than 3 times their normal May precipitation in the past two weeks.  Miles City’s mean annual precipitation is 13.4 inches. RECORD EVENT REPORT NATIONAL WEATHER SERVICE … Continue reading →

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Climate change at Astoria OR

Posted on 21 May 2011 by

Astoria OR climate change as measured by the mean temperature (deg F) over the period of record and over the past 5 years: 57 years 1954-2010: 51.0 5 years 2006-2010: 50.9 Annual mean temperature with departure from the 57-year mean: … Continue reading →

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Update: Colder over Oakland, snow at Donner Pass

Posted on 15 May 2011 by

UPDATE: Even colder air has moved in over Oakland late this afternoon with -31 C reported at 500 hPa, the coldest May sounding in at least the past 12 years.  Nearly a foot of new snow has fallen today at … Continue reading →

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Snowy afternoon in mid-May at Lake Tahoe

Posted on 15 May 2011 by

Here’s something you don’t see very often in mid-May, falling snow and 27-30 degrees at Lake Tahoe throughout this afternoon.  Here are the hourly observations from South Lake Tahoe Airport: DY STA   TP HHMM N CIG VSBY    WEA   SLP    T  … Continue reading →

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1.76 inches in Yakima WA today is a wet month

Posted on 15 May 2011 by

Yakima with 1.76 inches in the past 18 hours alone is wetter than any May since 1948 when 2.76 inches of rain fell.  The 2nd wettest May total was 2010 with 1.46 inches.  The total so far in 2011 is … Continue reading →

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Cold over Oakland California today

Posted on 15 May 2011 by

-30 C at 500 hPa over Oakland CA this morning (15 May 2011) is a rather unusually cold temperature for that location.  I went back and checked May over the past 12 years back to 1999 and found only one … Continue reading →

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Stevens Pass snow melt-out climatology

Posted on 13 May 2011 by

As the Stevens Pass snowpack drops to 100 inches today (13 May 2011) for the first time since 9 March it is a good time to take a look at the climatology of snowpack melt out at Stevens Pass in … Continue reading →

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