Water Year Ends A Bit Dry

11pm Wednesday…

The water year numbers are in…Portland was a bit below normal rainfall-wise over the past year. MarkRain_WaterYearPDX  We use a “water year” because we want to capture each rainy season separately; which always straddles two years.  Of course our wet season was extremely dry up through January, but then we made up big-time in February and March with very wet weather.  In fact March was our wettest March on record.

How about October?  It’s pretty obvious, looking at long-range models/maps, that the first half of the month is going to be quite dry.  Last October was very dry, but the one before was a real soaker!


Enjoy the dry and mostly sunny weather the next few days…

Chief Meteorologist Mark Nelsen

26 Responses to Water Year Ends A Bit Dry

  1. Prairiedog says:

    For any of you that missed this on Western, it is absolutely the best! Still laughing two days later.

  2. schmit44 says:

    10/2/2014 Oregon (All) Temperature Summary

    High:91 at Brookings Airpor( 459 ft)
    Low: 65 at RED MOUND(1753 ft)

    High:43 at HOWARD Mt Howard(8150 ft)
    Low: 19 at KIRK (4519 ft ) & Horse Ridge (US (4160 ft ) & DIMLKE (4726 ft )

    Largest Diurnal Change: 55 degrees
    CABIN LAKE (76/21 ) (4560 ft )

  3. Boydo3 N. Albany says:

    I don’t think it snowed in PDX that winter. And the two little events we had on MY hill were very short lived.

  4. BoringOregon says:

    Glad to see that the Grass is getting a little bit Greener….

  5. W7ENK says:

    It snowed at PDX in 2011?

    • W7ENK says:

      Why? Why did this post here??

    • Justin says:

      PDX had 1.8″ in 2010-11 and 3.1″ in 2011-12. Downtown Portland had 1.2″ in 2010-11 and 4.4″ in 2011-12.

    • morgan says:

      Hey W7ENK yes it did, Justin posted the amounts for downtown as well. I should have clarified that the 4 below average drier Octobers lead to that winter season being snowier. This due to the dominant H pressure out in the Pacific blocking storms. It retrogrades in the winter leading to more snow as arctic air gets here easier.

    • morgan says:

      I should also mention that 3 years we had wetter than normal Octobers in 2004, 2007 and the absolutely wet 2012, we had 0″ measureable snow at PDX that following winter.

    • W7ENK says:

      That’s really strange, because I started working downtown right by the river in January 2010. Until last February I’d not seen any snow beyond flakes in the air and a light patchy dusting in the grass (Waterfront), which is all we got from that massive dumping in January 2012 that gave Scappoose nearly 18 inches overnight (a mere 12 miles away), and parts of Western Washington upwards of 30 inches… Last February changed all that, and it was glorious!

      I hope that statistic is right, however. My snow-itch was scratched pretty good last winter, but I’ll never turn down more! 😀

    • Benjamin (West Salem) says:

      Morgan. that is a fairly interesting “statistic” that our direr Octobers have generally been followed by “snowier” winters. All 4 of those drier than average Octobers came before winters that gave the northern valley decent snowfalls, or at least enough to play in. Jan 07, Dec 08, Jan 2012 or March 2012 (depending on where you live either Jan 2012 or March 2012 delivered at least a brief dumping of snow), and of course Dec 13 and Feb 14.

      I think that the winter of 2010/2011 would be an exception, although we didn’t see a lot that year, we did have 2 modified arctic events.

      The winter of 07/08 I would agree with you that there were no arctic events and no widespread snowstorms; however, I feel like almost everyone except the airport received measurable snow that year, especially if you lived above 500′. That winter was full of cold troughs from the gulf of Alaska moving down into us and some people living in the valley had record snowfall totals that year.

  6. WEATHERDAN says:

    64 and sunny at Noon in Salem after a low of 44. Nice North breeze makes it feel Autumnal this Noon. Peace.

  7. schmit44 says:

    10/1/2014 Oregon (All) Temperature Summary

    High:82 at BROOKINGS( 79 ft)
    Low: 58 at Brookings Airpor(459 ft)

    High:38 at MT. HOWARD(7910 ft)
    Low: 16 at DIMLKE (4726 ft )

    Largest Diurnal Change: 45 degrees
    DIMLKE (61/16 ) (4726 ft )

  8. schmit44 says:

    I have my yearly rainfall database up and running for the 2013-2014 water year. Feel free to report your rainfall to this database. Here is the data entry form.

  9. morgan says:

    Interesting from that graph that the 4 drier Octobers also produce the 4 highest snowfall amounts for PDX during that time period. Here is hoping for a dry October for snow lovers.

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