RodneyS Posted January 5, 2016 Share Posted January 5, 2016 Some more stats for BWI- this was the 2nd hottest November-December period. The top ten are listed below (in degrees). We came close to beating 1931, and there's a huge gap between 2nd and 3rd. You'll see some familiar recent years in this list too: 1931: 50.2 2015: 50.0 1946: 47.4 1994 & 1941: 47.3 1948: 46.9 1881: 46.6 1889 & 2011: 46.5 2001: 46.4 This was also the 10th wettest December at BWI, with 5.85" At DCA, it was no contest. The November-December 2015 average temperature there was 52.5 degrees, which broke the 2001 record by 2.3 degrees. In fact, starting in March 2015, I believe that DCA broke every composite DC monthly record ending in December 2015 -- ten records in all. Link to comment Share on other sites More sharing options...
Ian Posted January 5, 2016 Share Posted January 5, 2016 DCA finally made the 20s this eve. Latest on record passing 12/23 in 2012. Link to comment Share on other sites More sharing options...
PrinceFrederickWx Posted January 5, 2016 Share Posted January 5, 2016 BWI would only need a +1.5 departure in both January and February to tie for top ten hottest winter. Link to comment Share on other sites More sharing options...
Ian Posted January 6, 2016 Share Posted January 6, 2016 2015-16 goes down as latest trace on record for DC. Still none. 01-02 tapped out today. Link to comment Share on other sites More sharing options...
PrinceFrederickWx Posted January 6, 2016 Share Posted January 6, 2016 BWI already had a T in December, but if you're looking to track snow futility, the only January that ever had a 0 (not even a T) was 1937. Its still early, but we're at zero so far and no snow in sight. Should probably mention that 1937 really delivered in February and March and was an above average winter though. Link to comment Share on other sites More sharing options...
PrinceFrederickWx Posted January 8, 2016 Share Posted January 8, 2016 This is something else I've been thinking about but don't have enough info- how often do we go through an entire winter without at least one subfreezing high? Looking at some of BWI's hottest winters I can't find any that didn't have at least one for DJF except 31/32 (and even that winter had several in March). So I can't find any for DJFM at all. Although not having any subfreezing highs may not correlate to an overall torch winter, so I could be looking in the wrong places. I'd assume DCA has had several without. Still early though- and BWI might get one next week? Link to comment Share on other sites More sharing options...
RodneyS Posted January 9, 2016 Share Posted January 9, 2016 This is something else I've been thinking about but don't have enough info- how often do we go through an entire winter without at least one subfreezing high? Looking at some of BWI's hottest winters I can't find any that didn't have at least one for DJF except 31/32 (and even that winter had several in March). So I can't find any for DJFM at all. Although not having any subfreezing highs may not correlate to an overall torch winter, so I could be looking in the wrong places. I'd assume DCA has had several without. Still early though- and BWI might get one next week? If you define subfreezing as 31 degrees and below, such a failure last happened at DCA four winters ago. During the winter of 2011-12 (Weak La Nina), the low maximum was 32 on January 22, 2012. The last winter at DCA in which the maximum exceeded 32 every day was the prior very strong El Nino in 1997-98, when the low maximum was 34 on March 11, 1998. Link to comment Share on other sites More sharing options...
PrinceFrederickWx Posted January 9, 2016 Share Posted January 9, 2016 I figured not getting a subfreezing high in DJF (yes, I mean 31 and under) would be more common at DCA than BWI. Other than 31/32, the only other one I found was 97/98 (which was tied for 8th hottest winter overall). But there may be others, I can't check them all. Some of BWI's hottest winters and the first subfreezing high they had (also included the super nino of 72/73 out of curiosity, even though its way down on the list at 25th hottest): 32/33 - 12/16 (23 degrees) 48/49 - 12/26 (25 degrees) 49/50 - 2/26 (31 degrees) 72/73 - 12/17 (30 degrees) 01/02 - 12/30 (30 degrees) 11/12 - 1/4 (31 degrees) Link to comment Share on other sites More sharing options...
Ian Posted January 9, 2016 Share Posted January 9, 2016 Play around with this it has basically everything once you figure out how to pull it http://xmacis.rcc-acis.org Link to comment Share on other sites More sharing options...
PrinceFrederickWx Posted January 10, 2016 Share Posted January 10, 2016 Play around with this it has basically everything once you figure out how to pull it http://xmacis.rcc-acis.org Will be adding this to my bookmarks, thanks! I use this page a lot- you guys probably already have this, but if you don't, its got a lot of good data: http://www.ncdc.noaa.gov/IPS/lcd/lcd.html Link to comment Share on other sites More sharing options...
PrinceFrederickWx Posted January 24, 2016 Share Posted January 24, 2016 Not only was this storm the biggest one for BWI (29.2") but it was also the snowiest single day yesterday (25.5"), beating the previous record of 23.3" on January 28, 1922. One thing that makes me kinda sad- the Dec. 2009 storm has now been knocked off the top ten list. Link to comment Share on other sites More sharing options...
needbiggerboat Posted January 24, 2016 Share Posted January 24, 2016 22/23 Jan 2016 Blizzard for IAD Overall and 2-day storm total, #2 at 29.3 (#1 is 32.4 from 5/6 Feb 2010) 1-day, #2 at 22.1 (#1 is 22.5 from 11 Feb 1983) Link to comment Share on other sites More sharing options...
gymengineer Posted January 24, 2016 Share Posted January 24, 2016 I think IAD's 28" snow depth is its highest on record, beating the depth after the second February 2010 storm. Link to comment Share on other sites More sharing options...
RodneyS Posted January 31, 2016 Share Posted January 31, 2016 December wasn't hot. It was warm. And January wasn't cold. It was cool. However the 34.9 degree average temperature at DCA, while only 0.3 degrees below the January 1871-2016 DC average of 35.2 degrees, was 16.3 degrees below the December 2015 average DCA temperature of 51.2 degrees. That decline represented the greatest one-month change from December in DC history. The previous record-holder was January 1912, which declined 16.0 degrees from December 1911. (The largest increase was January 1990, which was up 15.7 degrees from December 1989.) Link to comment Share on other sites More sharing options...
Ian Posted February 16, 2016 Share Posted February 16, 2016 Current three winter stretch is the snowiest on record for Dulles, VA (since 1963) at 122.7". Number two is 65-66 thru 67-68 with 105.5". Link to comment Share on other sites More sharing options...
WinterWxLuvr Posted February 17, 2016 Share Posted February 17, 2016 Current three winter stretch is the snowiest on record for Dulles, VA (since 1963) at 122.7". Number two is 65-66 thru 67-68 with 105.5". Does IAD keep stats on number of days with at least 1" snowfall? I know I've seen that data for some airports at some time in the past. Link to comment Share on other sites More sharing options...
MN Transplant Posted February 17, 2016 Author Share Posted February 17, 2016 Current three winter stretch is the snowiest on record for Dulles, VA (since 1963) at 122.7". Number two is 65-66 thru 67-68 with 105.5". Snow town. Link to comment Share on other sites More sharing options...
RodneyS Posted February 24, 2016 Share Posted February 24, 2016 At 2:52 PM today, there was a temperature difference of 21 degrees between DCA (65) and IAD (44). Not a record, as on both January 21, 1984 and January 28, 1987, the daily DCA/IAD minimums differed by 24 degrees (8 and minus 16, and 7 and minus 17, respectively). However, both of those occurred with significant snow on the ground at IAD and a clear night, and so radiational cooling was the source of the extreme difference in morning lows. Does anyone know what the record is for the largest afternoon difference, both at the same time and for the entire afternoon? (IAD is still forecast to reach about 60 later today.) Link to comment Share on other sites More sharing options...
RodneyS Posted February 25, 2016 Share Posted February 25, 2016 At 2:52 PM today, there was a temperature difference of 21 degrees between DCA (65) and IAD (44). Not a record, as on both January 21, 1984 and January 28, 1987, the daily DCA/IAD minimums differed by 24 degrees (8 and minus 16, and 7 and minus 17, respectively). However, both of those occurred with significant snow on the ground at IAD and a clear night, and so radiational cooling was the source of the extreme difference in morning lows. Does anyone know what the record is for the largest afternoon difference, both at the same time and for the entire afternoon? (IAD is still forecast to reach about 60 later today.) It looks as if the IAD temperature peaked at about 52 this afternoon (and is now higher), so the afternoon difference between DCA and IAD was only about 13 degrees. To my surprise, I found that the greatest difference in the daily maximum temperature at the two airports is four degrees higher. That occurred on December 9, 1975, when DCA recorded a high of 53 and IAD 36. So, today did not come close to that, although there is still the question of the greatest difference at the same time. By the way, I found a third case of a 24-degree difference in the daily minimums, which occurred on February 13, 1983, when DCA recorded 16 degrees and IAD minus 8. Link to comment Share on other sites More sharing options...
PrinceFrederickWx Posted February 25, 2016 Share Posted February 25, 2016 The 2.61" of rain at BWI yesterday was a daily precip record and also the 3rd rainiest day in February (maybe I should say "liquid precip" instead of "rain", cause 2nd place is 2/11/83 which was liquid equivalent of snow). Link to comment Share on other sites More sharing options...
RodneyS Posted March 1, 2016 Share Posted March 1, 2016 Pretty interesting 2015-16 meteorological winter at DCA, as despite the blizzard and relative cold of January, the average temperature was 42.0 degrees -- good enough for an 8th place tie for warmest in DC history. The last Super El Nino, in 1997-98, was the 6th warmest DC winter at 42.4 degrees. However, that winter lacked the variability of this one, with a standard deviation from the average daily winter temperature of only 6.1 degrees, compared to 10.7 degrees this season. In fact, this winter at DCA had the highest standard deviation since the winter of 1989-90, which came in at 11.1 degrees. Link to comment Share on other sites More sharing options...
PrinceFrederickWx Posted March 9, 2016 Share Posted March 9, 2016 BWI's record highs today and tomorrow are about to get blown out if the forecasts verify. Link to comment Share on other sites More sharing options...
PrinceFrederickWx Posted March 9, 2016 Share Posted March 9, 2016 High 82, low 40... that's a 42 degree spread. I wonder what the largest difference is ever recorded in one day? I feel like that's gotta be close? Link to comment Share on other sites More sharing options...
RodneyS Posted March 10, 2016 Share Posted March 10, 2016 High 82, low 40... that's a 42 degree spread. I wonder what the largest difference is ever recorded in one day? I feel like that's gotta be close? Not sure about Baltimore, but in DC the record one-day spread is 50 degrees -- March 22 1907, when the temperature range was 90/40. Link to comment Share on other sites More sharing options...
Ian Posted March 10, 2016 Share Posted March 10, 2016 Not sure about Baltimore, but in DC the record one-day spread is 50 degrees -- March 22 1907, when the temperature range was 90/40. I looked to 2000, has happened a few times. Most recently in 2011, April 4.. 43/86. Dulles actually has 5 above 50 but not that shocking for its location I suppose. 4/11/1977 87 33 54 4/3/1981 86 34 52 1/28/1987 35 -17 52 3/23/1994 83 32 51 4/18/1985 84 34 50 Link to comment Share on other sites More sharing options...
Subtropics Posted March 10, 2016 Share Posted March 10, 2016 I looked to 2000, has happened a few times. Most recently in 2011, April 4.. 43/86. Dulles actually has 5 above 50 but not that shocking for its location I suppose. 4/11/1977 87 33 54 4/3/1981 86 34 52 1/28/1987 35 -17 52 3/23/1994 83 32 51 4/18/1985 84 34 50 That -17 35 is the coolest one on that list IMO Link to comment Share on other sites More sharing options...
RodneyS Posted March 10, 2016 Share Posted March 10, 2016 I looked to 2000, has happened a few times. Most recently in 2011, April 4.. 43/86. Dulles actually has 5 above 50 but not that shocking for its location I suppose. 4/11/1977 87 33 54 4/3/1981 86 34 52 1/28/1987 35 -17 52 3/23/1994 83 32 51 4/18/1985 84 34 50 That -17 35 is the coolest one on that list IMO The temperature range at DCA that day was 7 to 32. So, the maximum was 3-degrees higher at IAD, but the minimum was 24-degrees lower. As previously mentioned on this thread, that is one of three times that there has been a 24-degree difference between the minimums at the two airports. Link to comment Share on other sites More sharing options...
PrinceFrederickWx Posted March 10, 2016 Share Posted March 10, 2016 BWI's record highs today and tomorrow are about to get blown out if the forecasts verify. So both record highs did get broken. Record high min today is probably going to be broken too- it was 57 overnight, the record is 56 so as long as we hold it until midnight we're good. Link to comment Share on other sites More sharing options...
PrinceFrederickWx Posted March 11, 2016 Share Posted March 11, 2016 Open question: are we headed for a March 2012 repeat? I see a lot of double digit departures in the forecast... Link to comment Share on other sites More sharing options...
MN Transplant Posted March 11, 2016 Author Share Posted March 11, 2016 Open question: are we headed for a March 2012 repeat? I see a lot of double digit departures in the forecast... No. Mar 2012 was a historic monster. Mar 2010, maybe. Link to comment Share on other sites More sharing options...
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