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RodneyS

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About RodneyS

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  • Four Letter Airport Code For Weather Obs (Such as KDCA)
    KIAD
  • Gender
    Male
  • Location:
    Oak Hill, VA

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  1. Our region's extreme run

    You're on to something. May 12-19, 2018 was indeed the first time in DC weather history that eight straight days each recorded at least 0.15" of precipitation. The previous record for that amount or more was seven straight days, set in July 1938 and equaled in July 1941; see http://xmacis.rcc-acis.org/#. Click on that link, then select "Single Station" and click on "Consecutive Days." For "Criteria" select "Precipitation" then type in (more or equal to) "0.15." Then select the "Washington Area" station and click "Go." As I just posted to an article on the Washington Post's Capital Weather Gang: "Rainy to be sure, but to put things in perspective, DC's record single-day rainfall is 6.39 inches, on August 23, 1933. More recently, DCA recorded 9.08 inches during the five-day period September 22-26, 1975."
  2. Our region's extreme run

    I have just discovered that the above statement is not true for 0.4", as only 2011, 1975, and 1937 also had 5-day streaks of at least 0.4 inches. However, I would have thought that the statement would have more logically read: "It has been an unusually wet pattern over the last week. For DCA (Reagan National), there has been at least 0.4" of rain each of the last 7 days. This is the longest streak on record. The previous longest was 5 days in 2011, 1975, and 1937. Precipitation records date back to 1871."
  3. Our region's extreme run

    You can view the May 2018 daily precipitation totals at DCA here under "Preliminary Monthly Climate Data" (Column 7 "WTR")-- https://w2.weather.gov/climate/index.php?wfo=lwx
  4. Our region's extreme run

    The week of Sunday, May 13, 2018 through Saturday, May 19, 2018 saw at least 0.4 inches of precipitation at DCA each of those seven days. Previously, no more than five consecutive days in DC weather history recorded at least 0.4 inches each day.
  5. DCA _ NYC _ BOS __ ORD _ ATL _ IAH ___ DEN _ PHX _ SEA 1.5 1.1 1.5 -0.3 0.0 0.7 2.0 2.4 2.6 Highest Temperatures: DCA: 97° NYC: 96° BOS: 95° ORD: 94° ATL: 96° IAH: 101° DEN: 100° PHX: 117° SEA: 89°
  6. April Mid/Long Range & Disco

    Thanks for that information. It is remarkable what can be found, but also interesting that snow was not recorded for so many years after official weather recordkeeping began.
  7. April Mid/Long Range & Disco

    I just found this, from the April 30, 1874 Reading (PA) Times: "BALTIMORE, April 29. -- A brisk snow storm prevailed here this morning from about 4 o'clock until after ten, falling to the depth of 3 or 4 inches." The temperature range in Baltimore that day was 33 to 46, with 0.49 inches of precipitation. So, DC was colder, with more precipitation, which makes me wonder if it did not receive even more snow. Of course, if so, I would have thought that would have made the Reading Times account.
  8. April Mid/Long Range & Disco

    Just saw this. Yes, Dulles received 0.2 inches of snow on April 4, 1990, 2.7 inches on April 6, 1990, and 1.1 inches on April 7, 1990. Presumably, these were two distinct events -- 0.2 inches on the 4th and 3.8 inches on the 6th-7th. In the pre-airport age in DC, there was 0.4 inches on April 6, 1907, 0.4 inches on April 7, 1907 (combined 0.8 inches) and 0.6 inches on April 9, 1907. And, perhaps the toughest DC record to break: After 0.5 inches of snow fell on April 5, 1898, another 0.5 inches fell on April 28, 1898. (The temperature range on the latter day was 33 to 43, with 0.29 inches of precipitation.) However, 1874 might well be the champion for two April snows and the latest April snow ever, if official DC snow records had been kept at that time. April 1, 1874 had a temperature range of just 29 to 35, with 0.09 inches of precipitation; and April 29, 1874, had a temperature range of only 30 (latest DC freeze ever) to 45, with 0.84 inches of precipitation. So, I would guess that snow fell on both of those days, and perhaps the latter day even saw an inch or two. Maybe an old newspaper might mention snow on that day.
  9. Mid-Atlantic winter 2017-18 snowfall contest

    Depends what assumptions you make, but thus far IAD has never had measurable snow later than April 12th, when it received an inch in 1973. However, it did not exist in 1898, when Baltimore received a tenth of an inch, and DC received half an inch, on April 28th.
  10. DCA _ NYC _ BOS __ ORD _ ATL _ IAH ___ DEN _ PHX _ SEA -1.7 -2.4 -1.9 -5.0 0.2 0.9 1.0 3.2 -1.0
  11. This is a very interesting phenomenon, and is reflective of cooler March temperatures in the Mid-Atlantic since the record-breaking 56.8 degree average recorded at DCA in March 2012. Consider what's happened to the Tidal Basin peak cherry blossom bloom date during the last six years, relative to historical averages: From 1921 (first year peak bloom was recorded) through 1996, the average peak bloom date was just shy of April 5th (April 4.6, to be more exact). During 1997-2012, that date shifted by about five and a half days earlier, to March 30.2. However, with an estimated peak bloom date this year of April 10th, the 2013-2018 average peak bloom date would be April 4.5 -- back to where we were during 1921-1996. Obviously, six years is a limited period and could be a fluke, but I'm not sure anyone forecast this rather remarkable shift in March temperatures and snowfall in our region.
  12. Mid-Atlantic winter 2017-18 snowfall contest

    You, MillvilleWx, and I each did well at BWI and DCA, and need more snow at IAD, which is still possible. Unfortunately, we each were much too conservative at RIC, which is why we are out of it.
  13. Mid-Atlantic winter 2017-18 snowfall contest

    That total includes the 0.2 inches that fell on Tuesday, March 20th. I was comparing the amount of snow that fell in DC and Baltimore on March 21, 1924 and March 21, 2018.
  14. Mid-Atlantic winter 2017-18 snowfall contest

    FYI, the ultimate back-loaded snow season in this area was 1941-42. Entering Palm Sunday weekend 1942, DC had received 2.1 inches and Baltimore 4.3 inches that season. Then beginning in the late evening of Saturday, March 28, 1942, DC received 11.5 inches (all measurable snow fell on March 29th), and Baltimore 22.0 inches! See http://articles.baltimoresun.com/1999-03-27/features/9903270345_1_snow-evening-sun-flurries
  15. Mid-Atlantic winter 2017-18 snowfall contest

    Great job by olafminesaw to be within 3 inches at each location. Richmond did many of us in; however, I calculate that Eskimo Joe and GramaxRefugee are still in the running if we get another decent snowstorm that gives IAD 4-5 inches and DCA a couple of inches. GramaxRefugee also needs at least a tiny amount at BWI, which would knock out Eskimo Joe if it exceeds 0.3 inches. While each is facing long odds, here is an interesting historical note: Exactly 94 years before yesterday's 4.1/4.5 inch snowfalls at DCA/BWI, respectively, DC received its all-time record amount of snow for March 21st -- 5.3 inches in 1924, with Baltimore receiving its second greatest amount of snow for that date, at 5.0 inches. Then, just 11 days later on April 1, 1924, DC received another 5.5 inches and Baltimore received another 9.4 inches -- the largest April snowstorms in DC and Baltimore history. So, I think GramaxRefugee is facing about the same odds that UMBC did against UVA, and Eskimo Joe is facing about the same odds as Loyola is of winning this year's NCAA basketball championship.
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