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July 2013 Observations and Discussions


bluewave

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Cool show on the weather channel "Weather that changed the World"

- Apparently there was a tornado (Ef3) in D.C. which killed 35 British troops, during the occupation of the city in the War of 1812. This played big a role in the British army leaving the city.

- I'm a history buff and I had no idea about this, really cool stuff

 

"August 25, 1814 in the early afternoon, a strong tornado struck northwest Washington and downtown. The severe  tornadic storm arrived the day that the British Troops had set fire to the Capitol, the White house and other public buildings. The storm's rains would douse those fires. The tornado did major structural damage to the residential section of the city. More British soldiers were killed by the tornado's flying debris than by the guns of the American resistance.  The tornado blew off roofs and carried them high up into the air, knocked down chimneys and fences and damaged numerous homes. Some homes were destroyed. It lifted two pieces of cannon and deposited them several yards away. At least 30 Americans were killed or injured in the heavily damaged buildings and an unknown number of British were killed and injured"

- http://www.erh.noaa.gov/er/lwx/Historic_Events/DC-tornado-events.htm

 

- Lol that must have put the fear of God into them

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That a 24 hr record for them? More to come

Getting heavy rain and real loud thunder here in Edison. Best tstorm of the year

 

Yes, all-time daily record:

RECORD EVENT REPORTNATIONAL WEATHER SERVICE MOUNT HOLLY NJ0711 PM EDT SUN JUL 28 2013...RECORD ALL TIME DAILY MAXIMUM RAINFALL SET AT PHILADELPHIA PA...A RECORD ALL TIME DAILY RAINFALL RAINFALL OF 7.35 INCHES WAS SET ATPHILADELPHIA PA TODAY. THIS BREAKS THE ALL TIME RECORD FOR A SINGLEDAY RAINFALL SET DURING TROPICAL STORM FLOYD OF 6.63 INCHES WHICHWAS ON SEPTEMBER 16TH 1999. RECORDS GO BACK TO 1872.
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Im really pissed off by the NWS drought monitor having the South Shore of Long Island in a no drought color.

 

We had zilch zero rain yesterday!!!!! In the last 2 months we have had less then 2 inches!!! During maximum solar inclination and the heat of 2 weeks ago that equals extremly low soil moisture. Granted we got dumped on in May but trees here are now dropping leaves...

 

 

 

I have seen this before (in the late 90's and again mid 2000's) It has something to due with the seabreeze but the true cause is a combination of things and really some bad luck on  days like yesterday...

 

 

Any of the other South Shore guys feeling this?

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Im really pissed off by the NWS drought monitor having the South Shore of Long Island in a no drought color.

 

We had zilch zero rain yesterday!!!!! In the last 2 months we have had less then 2 inches!!! During maximum solar inclination and the heat of 2 weeks ago that equals extremly low soil moisture. Granted we got dumped on in May but trees here are now dropping leaves...

 

 

 

I have seen this before (in the late 90's and again mid 2000's) It has something to due with the seabreeze but the true cause is a combination of things and really some bad luck on  days like yesterday...

 

 

Any of the other South Shore guys feeling this?

 

It has been a very dry July right along the South Shore. Gilgo Beach has only picked up 1.14" and Bellmore 1.45".

 

http://www.wunderground.com/weatherstation/WXDailyHistory.asp?ID=KNYGILGO1&day=29&year=2013&month=7&graphspan=month

 

http://www.wunderground.com/weatherstation/WXDailyHistory.asp?ID=KNYBELLM2&day=29&year=2013&month=7&graphspan=month

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I have 3.29 this month in southern queens, with summer convection its not uncommon to see large differences a few miles away.

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I have 3.29 this month in southern queens, with summer convection its not uncommon to see large differences a few miles away.

 

This is the fourth July in a row of below normal rainfall at JFK with all the heat we have been experiencing. The

last really active July at JFK was back in 2007 when JFK picked up 5.29".

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Yeah but there was almost 4.50" and 7.99" in June at those two locations.

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Im really pissed off by the NWS drought monitor having the South Shore of Long Island in a no drought color.

We had zilch zero rain yesterday!!!!! In the last 2 months we have had less then 2 inches!!! During maximum solar inclination and the heat of 2 weeks ago that equals extremly low soil moisture. Granted we got dumped on in May but trees here are now dropping leaves...

I have seen this before (in the late 90's and again mid 2000's) It has something to due with the seabreeze but the true cause is a combination of things and really some bad luck on days like yesterday...

Any of the other South Shore guys feeling this?

Drier than normal is likely the new normal.
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Updating with 7/28

 

Cooldown

 

 

NYC:

7/24: 83/68 (-1)

7/25: 68/64 (-11)

7/26: 83/65 (-3)

7/27:  82/70 (-1)

7/28: 78/70 (-3)

7/29:

7/30:

7/31:

 

EWR:

7/24: 84/68 (-2)

7/25: 68/62 (-12)

7/26: 85/66 (-2)

7/27: 84/67 (-2)

7/28: 80/69 (-2)

7/29:

7/30:

7/31:

 

LGA:

7/24: 83/69 (-2)

7/25: 70/64 (-11)

7/26: 84/65 (-3)

7/27: 84/71 (0)

7/28: 82/71 (-1)

7/29:

7/30:

7/31:

 

JFK:

7/24: 88/70 (+3)

7/25: 70/63 (-9)

7/26: 84/64  (-2)

7/27: 81/68 (-1)

7/28: 78/68 (-3)

7/29:

7/30:

7/31:

 

New brunswick:

7/24: 83/64 (-2)

7/25: 69/64 (-9)

7/26: 84/65 (0)

7/27: 86/64 (0)

7/28: 84/64 (-1)

7/29:

7/30:

7/31:

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We are also off to a slow start for severe reports across the region. 

I was able to find annual stats for NJ going back to 2002. We still

have time to bump the number to over 100 on the year. It's hard

to find specific info for NYC and LI and NNJ post 2006.

 

http://www.spc.noaa.gov/climo/online/rda/OKX.html

 

Total NJ severe reports

 

2013...46...so far

2012...178

2011...172

2010...105

2009...147

2008...207

2007..136

2006..157

2005..109

2004..107

2003..144

2002..175

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Updating with 7/28

 

Cooldown

 

 

NYC:

7/24: 83/68 (-1)

7/25: 68/64 (-11)

7/26: 83/65 (-3)

7/27:  82/70 (-1)

7/28: 73/69 (-6)

7/29:

7/30:

7/31:

 

EWR:

7/24: 84/68 (-2)

7/25: 68/62 (-12)

7/26: 85/66 (-2)

7/27: 84/67 (-2)

7/28: 80/69 (-2)

7/29:

7/30:

7/31:

 

LGA:

7/24: 83/69 (-2)

7/25: 70/64 (-11)

7/26: 84/65 (-3)

7/27: 84/71 (0)

7/28: 82/71 (-1)

7/29:

7/30:

7/31:

 

JFK:

7/24: 88/70 (+3)

7/25: 70/63 (-9)

7/26: 84/64  (-2)

7/27: 81/68 (-1)

7/28: 78/68 (-3)

7/29:

7/30:

7/31:

 

New brunswick:

7/24: 83/64 (-2)

7/25: 69/64 (-9)

7/26: 84/65 (0)

7/27: 86/64 (0)

7/28: 84/64 (-1)

7/29:

7/30:

7/31:

 

I believe NYC was a 78/70 yesterday and a -3.

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Latest ECMWF ensembles for the first week of August have the mean trough in the Northeast. Recall a week ago when the GFS ensembles were insistent on the WAR resisting the trough in the Northeast. However, the GFS guidance has since trended toward the ECMWF ensembles which have always had the further east displaced WAR for the July 25th-August 5th period. What happens after the first week of August is up for debate, but given pattern persistence, lack of strong global signaling, and stable SSTA pattern in the Atlantic, it is very possible that the high humidity returns for later in August into September as I mentioned. Although there are subtle indications of the ridge retrogression by August 10th, I think that's probably rushing it too much as usually tends to be the case. We may see a situation where the pattern resets at 3-4 weeks intervals. We were cool late May-late June, hot/humid June 20-July 20, we'll probably be normal to below for the next 3 weeks at least, then August 20-Sept 20 could be very warm.

 

2s81q81.png

Interesting, any changes in this forecast with the cooler changes that came in over the weekend?  Appreciate it. 

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