PrinceFrederickWx

So BWI has 13.09" which is 4th. Both 3rd and 2nd wettest month are less than an inch away. Tuesday is our last shot now. The rainiest summer ever is 1955 with 25.38". This is probably the next record to go for as we're already halfway there.

BWI has 2.86" for the the day so far, which is a daily record. The previous record was 2.04" in 1883. Monthly total is now 12.84", which is 4th rainiest month ever. We're not getting first place but there's a good chance we could still get 2nd or 3rd, especially with more rain possibly overnight and again on Tues.

The top one, August 1955, was from hurricanes Connie and Diane. August 1933 was from the unnamed mid-atlantic hurricane that I hear about a lot. The more recent ones you all probably know: Sept. 1999 was Floyd, Aug. 2011 was Irene, Sept. 2011 was Lee remnants. I haven't looked into the others but I agree, I'm sure its all tropical systems or their remnants.

The disparity in the extreme rainfall months is interesting. So where is DCA ranked for this month right now? I didn't realize IAD was so much lower. My house, DCA and BWI are all generally in the same 9" range. I'd like to see a monthly rainfall map of the region after the month is over.

BWI has 9.98" so that's the wettest June ever. Next milestone will be getting the double digit rain mark which is almost certain to happen. There's only 11 other months that ever reached the double digits (and none were in June): Aug 1955 - 18.35 Aug 1933 - 13.83 Sept 2011 - 13.32 Sept 1934 - 12.41 Aug 1911 - 12.28 Sept 1999 - 11.5 Jul 1889 - 11.03 Aug 1971 - 10.91 Jul 1905 - 10.65 Sept 1876 - 10.52 Aug 2011 - 10.38

Just another 0.39" needed for BWI to get wettest June ever, and 0.43" to give them the first ever double digit June total. Looking at the forecast its gotta happen... I think.

75.9 is the number that gets us in top 10 hottest June. As of yesterday it was 74.6- this number should go up a lot the next few days, but Sat-Mon may ruin it now.

Record high tomorrow at BWI is 97, set in 2010. Forecasted high is 96. We may even be able to sneak in a top 10 hottest June... I think. I'd have to look at it some more.

BWI has now clinched at least 7th place with 8.02" so far. Getting past 8.08" will move them up to 6th. This is also ahead of 2013, which had 7.81" total. Edit: forgot about the middle of the night stuff, so BWI is definitely over the 8.08" mark for 6th place.

Its really interesting to me how much persistence has played a role this decade (which is why this thread exists in the first place I guess). We go from mostly persistent heat (3/2010 - 1/2013) then to mostly persistent cold (1/2014 - 3/2015) and now back to heat? Maybe, idk.

Just like June 2013, I'm gonna go ahead and throw out a "top ten wettest June on record watch" again for BWI.

May at BWI finished 7th at 69.1 degrees. This moved May 2012 (69.0 degrees) down to tied for 8th now. All without breaking a single daily record high or high minimum too. I can't think of any other year that had a such a dramatic turnaround with temps as this one. 1936 gets talked about a lot, but that was more for the midwest I think- the actual numbers aren't that impressive at BWI at least. Oh and if anyone cares, we're now in 17th for the coldest year ever race. LOL Yeah it probably was. Could probably add 4/16/12 to the mix too. We're screwed.

May is the new July for BWI. There hasn't been a below average May since 2008, and nine of the last ten Mays (including this one) have been above average. This May is currently ranked 13th hottest, but is very close to being in the top 10- if it happens, that would be two top 10 hottest Mays in just four years.

Trying to stay positive. I'm hoping this month isn't another inflection point like March 2010, if you know what I mean...

It's probably time to abandon the idea of top 10 coldest calendar year for BWI and focus on top 10 hottest May, so... 68.4 is the magic number that gives BWI a tie for top 10. Right now they are at 68.6. The next few days will knock that average down, but if we blowtorcher next week as currently forecast it will be back in play again.

3rd coldest Jan-Apr period at BWI. Below are the top five (in degrees): 1904: 36.7 1875: 37.2 2015: 37.6 1895: 37.7 1893: 37.8 Also remember that Jan-Apr 2014 was tied for 5th last year and is now tied for 6th.

Yep. High of 80 today, so nevermind.

A somewhat interesting thing I noticed- BWI has not had one 80+ high this month so far. There doesn't appear to be any chance over the next seven days either (unless maybe Saturday busts warm). The last time BWI had an April without an 80+ high was in 1997.

Its a little unsettling how easily BWI tied that record highest min yesterday, just seemingly out of nowhere. I hope that's not an omen like 4/4/2011 or 4/5-6/2010...

If they can hold it until midnight, BWI has tied the record highest minimum for today (60). Currently 66 now.

That's a good point and would skew the results; however, it doesn't look like LWX uses weighted averages for February or the 30-day months. I checked through their data to be sure. So my numbers are using their same methodology (whether its accurate or not).

Speaking of which, DJF for BWI averaged exactly 32 degrees- 1 of the 15 winters to finish at or below freezing on average.

BWI just crushed the record for coldest Jan-Mar period ever. Below are the top five: 2015: 31.9 1904: 32.3 1912: 32.5 1895: 32.6 1885: 32.6 I'm tempted to start saying "top 10 coldest year on record watch" again since we're way out in front, but I said that last year and had the rug pulled out from under me in December. Also there seems to be more chatter now about a flip to warm for the rest of spring and summer... Rodney (or anyone) where did IAD rank? I had assumed it would be somewhere in the top five coldest?

Tomorrow's daily snowfall record for BWI is the lowest out of any day in DJFM- just 0.2 inches. Now, if we could get tomorrow's snow showers to accumulate just a little bit... (I'm just kidding!)

The Jan.-Mar. period last year tied for 6th coldest at BWI- will be interesting to see where Jan.-Mar. this year ranks. I haven't done the math but I'm almost certain it'll beat last year. Also- record low watch for Sunday, March 29? The record is 18 (set in 1923), current forecast is 23, so its a long shot, but the forecast keeps trending colder.