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HEAT WAVE 6 now underway....probably will last 5 days


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I've never used Allan's max temp maps before, so I don't know if it is equivalent to what I've been keeping track of, but this is unreal:

Thurs: 100

Fri: 102

Sat: 103

Sun: 101

Mon: 100

Tue: 84

Monday:

post-1746-0-03350300-1311094175.gif

Steep drop there Mon-Tuesday.... hope thats a strong CF for good storms :arrowhead:

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For historical perspective, the great 100+ heat waves (3 consecutive):

7 15 1988 100

7 16 1988 104

7 17 1988 101

7 8 1993 100

7 9 1993 100

7 10 1993 100

And the granddaddy summer:

7 19 1930 102

7 20 1930 106

7 21 1930 103

7 22 1930 100

7 25 1930 100

7 26 1930 103

8 3 1930 100

8 4 1930 102

8 5 1930 102

8 8 1930 101

8 9 1930 102

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I've never used Allan's max temp maps before, so I don't know if it is equivalent to what I've been keeping track of, but this is unreal:

Thurs: 100

Fri: 102

Sat: 103

Sun: 101

Mon: 100

Tue: 84

Close (source http://wxweb.meteost...shtml?text=kdca)

Thurs: 100

Fri: 103

Sat: 105 (:yikes:)

Sun: 103

Mon: 100

Tue: 84

For fun(?)

IAD

Thurs: 102

Fri: 105

Sat: 106

Sun: 105

Mon: 102

Tue: 85

To counteract any panic, I am now linking to the thread on the main board where it says that the GFS sucks and is way too warm: http://www.americanw...argin-days-5-6/

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For historical perspective, the great 100+ heat waves (3 consecutive):

7 15 1988 100

7 16 1988 104

7 17 1988 101

7 8 1993 100

7 9 1993 100

7 10 1993 100

And the granddaddy summer:

7 19 1930 102

7 20 1930 106

7 21 1930 103

7 22 1930 100

7 25 1930 100

7 26 1930 103

8 3 1930 100

8 4 1930 102

8 5 1930 102

8 8 1930 101

8 9 1930 102

It's interesting Balt has had 6 3-day consec in addition to the 4 day at the same time DC did.

I added some info to my 100-degree days post on my site.. breakdown of all 100F days:

44% hit 100 on the nose, 23% made it to 101, 16% to 102, 8% to 103, %5 to 104 and 2% each to 105F and 106F.

http://www.ianlivingston.com/2011/07/11/100-degree-days-at-washington-d-c-and-baltimore-md-yearly-counts-seasonal-average-and-extremes/

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The GFS does have the 850s 2-3 degrees higher than the NAM. Will be interesting to see the Euro in a little bit.

I do think I will save the text as the most absurd model run since the DGEX prior to snowmaggedon.

There was a map posted in the regular weather forum in regards to this... trying to find it

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Is there any correlation between the following winter and summers that have multiple temps of 100+ degrees? What I mean is, is there a better chance for a cold/snowy winter following a summer that has multiple 100+ degree days?

Looks cold and dry.

Winters following years with 3+ 100° days

post-1746-0-71864500-1311096241.pngpost-1746-0-24694600-1311096265.png

Throwing out the 97/98 Nino

post-1746-0-57308000-1311096320.png post-1746-0-74734400-1311096273.png

No moderate or strong ENSO

post-1746-0-05779800-1311096626.pngpost-1746-0-49424400-1311096635.png

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Is there any correlation between the following winter and summers that have multiple temps of 100+ degrees? What I mean is, is there a better chance for a cold/snowy winter following a summer that has multiple 100+ degree days?

This guy seems to have an idea of what our next winter will be like

http://www.americanwx.com/bb/index.php/topic/21747-winter-outlook/page__pid__819455#entry819455

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Looks cold and dry.

Winters following years with 3+ 100° days

Throwing out the 97/98 Nino

No moderate or strong ENSO

MN, that's a rather strong signal even without 1966-67 and 1995-96 being included. I noticed a few years back that many of NYC's historic winters (which I define as a winter that occurs on average once a decade, which works out to 50"+) were preceded by scorching summers (which I define as summers in which we reached 90 degrees at least 30 times and 100 at least once.) I left out strong ENSO condition years like 1983, 1991 and 1999. Obviously the correlation isnt going to be perfect, but winters like 1966-67, 1977-78, 1993-94, 1995-96, 2002-03 and 2010-11 were preceded by these kinds of summers. I asked Wes about this awhile ago and I recall him saying that these kinds of summers usually occur in -NAO patterns so if the pattern persists into the winter, then you can get a snowy/cold winter.

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We could be at four 100 degree days by Saturday. Outside of the eleven 100 degree days of 1930 we have the possibilty of quickly approaching some of the higher years. Using Ian's link it looks like the second highest year was 7 days followed by a year with 6 and then a year with 5. It isn't until the 4-100 degree days that you get mutliple years of occurence.

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MN, that's a rather strong signal even without 1966-67 and 1995-96 being included. I noticed a few years back that many of NYC's historic winters (which I define as a winter that occurs on average once a decade, which works out to 50"+) were preceded by scorching summers (which I define as summers in which we reached 90 degrees at least 30 times and 100 at least once.) I left out strong ENSO condition years like 1983, 1991 and 1999. Obviously the correlation isnt going to be perfect, but winters like 1966-67, 1977-78, 1993-94, 1995-96, 2002-03 and 2010-11 were preceded by these kinds of summers. I asked Wes about this awhile ago and I recall him saying that these kinds of summers usually occur in -NAO patterns so if the pattern persists into the winter, then you can get a snowy/cold winter.

Well...maybe you can get a snowy and cold winter. We'll just get a cold winter.

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Do you have a 95+ graph/stats?

I think I put the whole record in the thread Matt started. I'm working on a consecutive / streak graph now tho I screwed up the first go around so I need to fix it.

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