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All time Warmest March on Record - DCA


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If the month ended now we'd be 16th warmest on record....pretty nuts....It looks like we'll make a run at the top 5 for sure....The 2 at the top are crazy..They were likely around +12's versus the norms of the time.....both had massive heat waves with highs in the upper 80s....and both had top 10 max-mins....without 2-4 days in the mid to upper 80s and a couple mins in the low to mid 60s, it will be hard....

1) 56.2 (1945)

2) 55.5 (1921)

3) 53.0 (1946)

4) 52.7 (1977)

5) 51.7 (2000)

16) 49.6 (2012)

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If the month ended now we'd be 16th warmest on record....pretty nuts....It looks like we'll make a run at the top 5 for sure....The 2 at the top are crazy..They were likely around +12's versus the norms of the time.....both had massive heat waves with highs in the upper 80s....and both had top 10 max-mins....without 2-4 days in the mid to upper 80s and a couple mins in the low to mid 60s, it will be hard....

1) 56.2 (1945)

2) 55.5 (1921)

3) 53.0 (1946)

4) 52.7 (1977)

5) 51.7 (2000)

16) 49.6 (2012)

1946 and 1977 were the only years with a trace of snow in May up here...Spring 1945 started warm but ended cool...June's coolest temperature was set in 1945 in NYC...there was some snow in April 1921 and 2000 up here...maybe the rubber band will break and there will be a cool endeng to a very long warm stretch......It seems like this rubber band is steal belted...No breaks in sight...TWT...

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If the month ended now we'd be 16th warmest on record....pretty nuts....It looks like we'll make a run at the top 5 for sure....The 2 at the top are crazy..They were likely around +12's versus the norms of the time.....both had massive heat waves with highs in the upper 80s....and both had top 10 max-mins....without 2-4 days in the mid to upper 80s and a couple mins in the low to mid 60s, it will be hard....

1) 56.2 (1945) +9.4

2) 55.5 (1921) +8.7

3) 53.0 (1946) +6.2

4) 52.7 (1977) +5.9

5) 51.7 (2000) +4.9

16) 49.6 (2012) +6.2

With departures from 81-10 to illustrate.

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1946 and 1977 were the only years with a trace of snow in May up here...Spring 1945 started warm but ended cool...June's coolest temperature was set in 1945 in NYC...there was some snow in April 1921 and 2000 up here...maybe the rubber band will break and there will be a cool endeng to a very long warm stretch......It seems like this rubber band is steal belted...No breaks in sight...TWT...

If the band does'nt break I feel then that proves we have moved into a warmer climate with 2 or 3 degees above the current averages being the new normal.

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Looks like we are locked in to a top 2 warmest Jan-Mar period. Only need above 54.0 for warmest.

We are also locked in to the warmest astronomical winter (approximately December 21st to March 20th each season) and the warmest composite meteorological/astronomical winter (December 1st to March 20th each season). Each of these two measures of winter currently (through March 13th) show average temperatures of 44.4 degrees in DC, versus the previous astronomical winter record of 43.7 in 1989-90 and the previous composite winter record of 44.0 in 2001-02.

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If the month ended now we'd be 16th warmest on record....pretty nuts....It looks like we'll make a run at the top 5 for sure....The 2 at the top are crazy..They were likely around +12's versus the norms of the time.....both had massive heat waves with highs in the upper 80s....and both had top 10 max-mins....without 2-4 days in the mid to upper 80s and a couple mins in the low to mid 60s, it will be hard....

1) 56.2 (1945)

2) 55.5 (1921)

3) 53.0 (1946)

4) 52.7 (1977)

5) 51.7 (2000)

16) 49.6 (2012)

Through yesterday, tied for 5th all time if March ended today.

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Will be interesting to see if we can get through the weekend with the streak intact.

Y-day was first March back-to-back 80s since 1998. That was a 3 day stretch which could have been 5 without a 70s in between another 80 before it started.

If we get to 6 and stop then it's a top 5 70+ streak in Mar. GFS MEX has 71 for Sunday. If we get that then we could blow away the old streak of 9.

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1) 56.2 (1945)

Interesting to note that, through March 15, March 1945 averaged only 47.0 degrees, versus 53.8 this year. However, March 16-31, 1945 then torched to an average 64.9 degrees. To tie the all-time March record of 56.2, we would need March 16-31, 2012 to average 58.5.

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Interesting to note that, through March 15, March 1945 averaged only 47.0 degrees, versus 53.8 this year. However, March 16-31, 1945 then torched to an average 64.9 degrees. To tie the all-time March record of 56.2, we would need March 16-31, 2012 to average 58.5.

If you have it on hand, do you know what departure 58.5 would be for the last half of March?

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My in-house stuff has DCA at 49.19 for the average temp March 16-31 (using the new 30-year), so it would be a departure of approx. +9.3.

I calculate a barely different 49.13, for a departure of + 9.4. To put this in perspective, the March 1-15 departure this year was +9.7, so we would essentially have to continue at the same pace above normal for the rest of the month to tie the March 1945 record. March 16-31,1945, on the other hand, averaged +15.7 relative to the 1981-2010 normal. Further, 1931-1960 March temperatures averaged only 44.8, vs March temperatures of 46.9 during 1981-2010. So, if you consider that the March 16-31 normal was likely about 2.1 degrees less in 1945 than it is now, that would increase the March 16-31, 1945 departure relative to the normal of that era to +17.8. Pretty remarkable.

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IAD, DCA and BWI all have logged five to six daily minimums at or above 50 degrees.

The 850 mb progs suggest two days at or below normal between now and March 24 and

with all of the remainder of the interval above average.

By March 24, the month should be consistently around +10.5 or warmer.

The entire month should approach +10.8 or warmer unless the final week breaks the trend.

In 1885, March averaged 34.5 and no D.C. March has had an average temperature

in the 30s since 1941. At this rate, summer will run May to or through October in a few

decades.

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IAD, DCA and BWI all have logged five to six daily minimums at or above 50 degrees.

The 850 mb progs suggest two days at or below normal between now and March 24 and

with all of the remainder of the interval above average.

By March 24, the month should be consistently around +10.5 or warmer.

The entire month should approach +10.8 or warmer unless the final week breaks the trend.

In 1885, March averaged 34.5 and no D.C. March has had an average temperature

in the 30s since 1941. At this rate, summer will run May to or through October in a few

decades.

1960

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IAD, DCA and BWI all have logged five to six daily minimums at or above 50 degrees.

The 850 mb progs suggest two days at or below normal between now and March 24 and

with all of the remainder of the interval above average.

By March 24, the month should be consistently around +10.5 or warmer.

The entire month should approach +10.8 or warmer unless the final week breaks the trend.

In 1885, March averaged 34.5 and no D.C. March has had an average temperature

in the 30s since 1941. At this rate, summer will run May to or through October in a few

decades.

:weenie:

1960

post-96-0-14178100-1332161142.gif

Not all that surprising how rare a 30s March is since we need around a -6.9 monthly anomaly to get into the 30s using the new normals (or about a -6.6 anomaly using the old normals). Perhaps we should look at the number of years exceeding that anomaly in the positive direction (besides this year :P).

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If the month ended now we'd be 16th warmest on record....pretty nuts....It looks like we'll make a run at the top 5 for sure....The 2 at the top are crazy..They were likely around +12's versus the norms of the time.....both had massive heat waves with highs in the upper 80s....and both had top 10 max-mins....without 2-4 days in the mid to upper 80s and a couple mins in the low to mid 60s, it will be hard....

1) 56.2 (1945)

2) 55.5 (1921)

3) 53.0 (1946)

4) 52.7 (1977)

5) 51.7 (2000)

16) 49.6 (2012)

My very wild guess is the rest of march averages +3 to +5. Which would put us around 54.5 for the month, so solidly in 3rd place.

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My very wild guess is the rest of march averages +3 to +5. Which would put us around 54.5 for the month, so solidly in 3rd place.

The last 13 days of the month average about 59/40. The last week would have to be below normal to bring us down to +3 to +5. We are +10 to +18 today through Saturday.

And the D10 Euro ensemble looks like this:

post-1746-0-37067000-1332165323.gif

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