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July 2013 Observations and Discussions


bluewave

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The Euro has three waves of low pressure over the next 10 days as the WAR will be too strong

to allow the fronts from the west to clear the coast. The GFS has a similar pattern with a very

moist flow and high dewpoints for the next 10 days. Warm daily mins should be the main

contribution to above normal temps. Any days with enough sun could wind up in the mid

to upper 80's.

 

 

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The Euro has three waves of low pressure over the next 10 days as the WAR will be too strong

to allow the fronts from the west to clear the coast. The GFS has a similar pattern with a very

moist flow and high dewpoints for the next 10 days. Warm daily mins should be the main

contribution to above normal temps. Any days with enough sun could wind up in the mid

to upper 80's.

 

attachicon.gifGeopotential3250032hPa32and32Temperature32at3285032hPa_North32America_120.gif

 

attachicon.gifM7D7.gif

 

At least that's better than what we had in the past 72 hours. :)

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my area had a light shower that wet the ground late last evening...It felt like a steam bath after that...my gut feeling is we see some severe storms later in the day...Where they develop is the question?...

my gut feeling turned out to be gas...I'm getting a shower now and had some lightning before...

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The Euro has three waves of low pressure over the next 10 days as the WAR will be too strong

to allow the fronts from the west to clear the coast. The GFS has a similar pattern with a very

moist flow and high dewpoints for the next 10 days. Warm daily mins should be the main

contribution to above normal temps. Any days with enough sun could wind up in the mid

to upper 80's.

 

attachicon.gifGeopotential3250032hPa32and32Temperature32at3285032hPa_North32America_120.gif

 

attachicon.gifM7D7.gif

 

I am really thinking this week ((7/21 - 7/27) will work out much like the end of june/early July period  where we were on the east side of the trough/west side of WAR in the a steamy but potentially wet pattern.  Thu-Fri could be warm if enough sun is oute.  Beyond there, most guidance does push the trough through between 7/28 and 7/30 before emerging WAR (again)....

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With the temperature holding at 82° at NYC at 11:51 pm, it appears extremely likely that July 18-20, 2013 saw 3 consecutive days with a minimum temperature of 80° or above in NYC. That ties the record for most consecutive low temperatures at or above 80°. The only other times that occurred was August 9-11, 1896 and July 5-7, 1908. FWIW, the earliest 80° minimum temperature occurred on June 26, 1952. The latest occurred on August 15 in 1985 and 1988.

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the last seven days averaged 86.8...That is tied for the fifth hottest week on record...

Hottest seven day period...
high low mean max ..
98.0 76.9 87.4 102 7/07-7/13 1993
98.4 76.3 87.4 104 7/15-7/21 1977
98.3 76.0 87.1 102 8/29-9/04 1953
95.1 78.9 87.0 .98. 8/05-8/11 1896
95.7 77.9 86.8 104 7/18-7/24 2011
94.6 79.0 86.8 .98. 7/14-7/20 2013
95.3 78.0 86.7 .99. 8/09-8/15 1988
96.6 75.1 85.9 102 8/11-8/17 1944
96.1 75.2 85.7 100 8/01-8/07 1955
95.3 75.9 85.6 103 8/04-8/10 2001
94.9 76.1 85.5 102 7/16-7/22 1980
97.3 73.6 85.4 102 7/17-7/23 1991
95.7 75.1 85.4 .98. 8/28-9/03 1973
94.1 76.7 85.4 .96. 7/12-7/18 1981
94.3 76.4 85.4 103 7/04-7/10 2010
95.4 75.1 85.3 100 7/17-7/23 1955

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the last seven days averaged 86.8...That is tied for the fifth hottest week on record...

Hottest seven day period...

high low mean max ..

98.0 76.9 87.4 102 7/07-7/13 1993

 

Definitely one of the more impressive heatwaves in my lifetime. We really didn't get that bonafide 100 degree heat throughout the area, but I feel that the high minimums into the mid 80s contribute more to the oppressiveness factor than a day that tops out at 104, but with a minimum  in the mid 70s. There's just no relief whatsoever...and I know first hand because my days start out at 4 am on the construction sites. Unfortunately this week I got stuck working at the oil refinery in Linden. Holly hell was it hot out there...

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Definitely one of the more impressive heatwaves in my lifetime. We really didn't get that bonafide 100 degree heat throughout the area, but I feel that the high minimums into the mid 80s contribute more to the oppressiveness factor than a day that tops out at 104, but with a minimum  in the mid 70s.

the minimum averaged 79.0 for the seven days...It broke the record of 78.9 set in 1896...imagime living back then with no ac or electric fans...

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the minimum averaged 79.0 for the seven days...It broke the record of 78.9 set in 1896...imagime living back then with no ac or electric fans...

I can't. lol. Our power went out on Thursday night for about 5 hours and that was enough for me. The humidity just sucks the life out of you. I've had no ac nights in Phoenix, AZ in the summer, but it just doesn't compare to the humidity we get on the east coast.

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great find...1896 was a wild year weatherwise in NYC...

 

It looks like the ridge really locked in right over the area creating the long heat wave that August 4-13. Conditions were

also very dry that month especially just to our west over PA. That was likely the longest official heat wave

of the 19th century in NYC. Does you pre Central Park data show any really long heat waves earlier than the

1870's?

 

http://www.erh.noaa.gov/okx/climate/records/heatwaves.html

 

 

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It's pretty impressive to see any station in the Northeast with a +8 through the first 20 days of July.

                                          STATION:  BENNINGTON VT                                          MONTH:    JULY                                          YEAR:     2013                                          LATITUDE:   42 53 N                                          LONGITUDE:  73 15 W[TEMPERATURE DATA]      [PRECIPITATION DATA]       SYMBOLS USED IN COLUMN 16AVERAGE MONTHLY: 75.9   TOTAL FOR MONTH:   2.55    1 = FOG OR MISTDPTR FM NORMAL:   8.0   DPTR FM NORMAL:   -0.21    2 = FOG REDUCING VISIBILITYHIGHEST:    92 ON 19    GRTST 24HR  1.11 ON 10-10      TO 1/4 MILE OR LESSLOWEST:     58 ON 12                               3 = THUNDER

The highs return closer to normal there the rest of the month, but the mins remain elevated.

BENNINGTON           KDDH   GFSX MOS GUIDANCE   7/21/2013  0000 UTC                        FHR  24| 36  48| 60  72| 84  96|108 120|132 144|156 168|180 192       SUN  21| MON 22| TUE 23| WED 24| THU 25| FRI 26| SAT 27| SUN 28 CLIMO X/N  81| 53  82| 62  83| 63  81| 62  79| 60  81| 60  79| 62  78 57 81
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Lets see if we can tack on another (8th in a row) 90 degree day for most spots.  Dewpoints down into the 60's.

 

11Am roundup:

 

TEB: 83

NYC: 81

EWR: 85

LGA: 81

JFK:  84

ISP:  81

New Bnswk: 85

BLM: 80

TTN:  83

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Lets see if we can tack on another (8th in a row) 90 degree day for most spots.  Dewpoints down into the 60's.

 

11Am roundup:

 

TEB: 83

NYC: 81

EWR: 85

LGA: 81

JFK:  84

ISP:  81

New Bnswk: 85

BLM: 80

TTN:  83

 

I am thinking that we could have approached or broken the record at some sites from 2005-2013 if we had drier conditions of previous years.

 

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Central Parks Longest heat waves 90+...
#.....max.....dates
12...102...8/24-9/4 1953
11.....98...7/23-8/2 1999
10...102...7/7-7/16 1993
10.....98...8/4-8/13 1896
9.......98...8/11-8/19 2002
9.....104...7/13-7/21 1977
9.....101...7/6-7/14 1966
9.......94...7/5-7/13 1944
8.....102...8/10-8/17 1944
8.......97...7/29-8/5 2002
8.......98...8/2-8/9 1980
8.......98...8/28-9/4 1973
8.....100...6/26-7/3 1901
7.......98...7/14-7/20 2013 + other years

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I am thinking that we could have approached or broken the record at some sites from 2005-2013 if we had drier conditions of previous years.

 

 

 

 

2012, 2010, 2006 I think NYC missed longer streaks  by the usual 89 readings on several occasions.  Same in 1988.  Tomorrow looks to break the streak for many as clouds and storms/rain will be likely mon - wed.  Although with enough sun and less rain i could see some scattered 90 degree readings within these days.  Otherwise it's mianly mid to upper 80s and increasing humidity by tue evening.   Better shot at more widespread 90 degree readings  thu/sat (7/25 - 7/27) ahead of the cold front.

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