The Cool and Damp Weather of May-June 2010: Winners and Losers
Many sunlight-deprived residents of Washington State are complaining about the recent weather. Those that live on the west side of the Cascade Mountains are accustomed to cloudy and wet winters, and a slow warming as the days get longer during the spring.
Read moreA Review of Winter 2009-2010
The winter of 09-10 was anticipated to be warmer and drier than normal in the Pacific Northwest due to the expected development of a moderate El Niño. Did that actually happen?
Read moreThe Madden-Julian Oscillation (MJO) and the Weather of Washington State
The weather of the tropics on time scales of weeks to a couple of months is related to a phenomenon known as the Madden-Julian Oscillation (MJO). The MJO modulates the distribution of deep cumulus convection, and the attendant atmospheric circulation on scales of thousands of kilometers in a band along the equator.
Read moreMonitoring Precipitation near the Howard Hanson Dam 2010
As you are probably aware, the heavy rainfall in January 2009 damaged the Howard Hanson Dam (located on the Green River in King County). For more background information, please see our 2010 Water Year monitoring page.
Read moreDry Conditions in North Central WA
This year’s summer was warm and dry throughout the state. According to the National Climatic Data Center (NCDC), the mean temperature for June-July-August averaged over the entire state was 65.9 degrees Fahrenheit, ranking as the 8th warmest in 115 years (Figure 1).
Read moreJuly 2009 Heat Wave
Parts of Washington, and in particular western WA, felt the heat during the last week of July. A heat wave gripped the state on Monday, July 27 and lasted through Thursday, July 30.
Read moreDrought-like Conditions in Western WA
June has been remarkably dry in western WA (see Table 1), and the record for dry consecutive days in May and June was tied at Seattle-Tacoma International Airport (SeaTac AP) with 29 days this year from May 20-June 17.
Read moreWarm January Temperatures
Did you leave your jacket at home for a majority of the month? Felt like perhaps we skipped winter this season? Noticed buds on trees? If so, you’re not alone! January was remarkably warm across the state.
Read moreMonitoring Precipitation near the Howard Hanson Dam 2009
The heavy rainfall in January 2009 damaged the Howard Hanson Dam (located on the Green River in King County). The water was stored in the dam at a record high elevation of 1189 feet resulting in two depressions in the right abutment of the dam.
Read moreJanuary Flooding
The extreme flooding that occurred in Washington in early January had two main contributors: heavy precipitation that fell on Jan 6th and 7th and warm temperatures that melted snow still on the ground in some places from the December storms.
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