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July 2022


bluewave
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10 hours ago, bluewave said:

We had at least 4 ground level stations reach 100° yesterday across the area. 3 of these stations were mesonets and 1 was Newark airport. So with this new expanded coverage, we are finding out that Newark really isn’t that unique in terms of heat. The local TV and radio outlets need to highlight more than just the NYC ASOS in Central Park  which is in error. The dense tree growth shading the sensor can be 3° or more degrees cooler than just a few hundred feet away on an open lawn in Central Park. That is how much cooler a shielded sensor can be tucked under dense vegetation with shade and leaf transpiration. Many TV and radio forecasts were leading with highs of 90-95° yesterday for NYC. This was due to them just focusing on Central Park instead of the whole area. Outside of the immediate shore, the better range was a high of 95° to 100° which models like the Euro and HRRR did very well with. So the artificially cool NYC readings are one reason it’s rare to see 100° in a local broadcast forecast.

 

Hillsborough-Duke
NJ 2022-07-20 Mesonet 100  

Newark …….100

Brownsville 100
Corona 100

 

 

They’d never do it, but I’d love to see NYS plop a Mesonet in Central Park, in full view of the sun.

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I was up in the Warwick, NY area earlier.  No precipitation, and no storm to speak of, but I had a good view of the cumulonimbus cloud complex off to the east, and it was one of the most impressive I've ever seen around here, right there with what I've seen out in Nevada and Arizona during monsoon season.  I knew someone had to be getting rocked.  

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26 minutes ago, Cfa said:

They’d never do it, but I’d love to see NYS plop a Mesonet in Central Park, in full view of the sun.

The equipment was out in the open before the tree growth began to block the sensors in the 1990s. The NYC thermometer in July 1977 was warmer than Newark and LGA. Most heatwaves before the 90s featured NYC highs more in line the other urban sites. A mesonet on the Great Lawn in Central Park would probably be 3-4° warmer on sunny days in the summer than the current ASOS under the dense vegetation near the castle. 
 

Data for NY CITY CENTRAL PARK, NY
Click column heading to sort ascending, click again to sort descending.
Date
Max Temperature 
1977-07-13 93
1977-07-14 92
1977-07-15 96
1977-07-16 98
1977-07-17 97
1977-07-18 100
1977-07-19 102
1977-07-20 92
1977-07-21 104


 

Data for NEWARK LIBERTY INTL AP, NJ
Click column heading to sort ascending, click again to sort descending.
Date
Max Temperature 
1977-07-13 92
1977-07-14 91
1977-07-15 93
1977-07-16 97
1977-07-17 99
1977-07-18 98
1977-07-19 100
1977-07-20 90
1977-07-21 102


 

Data for LAGUARDIA AIRPORT, NY
Click column heading to sort ascending, click again to sort descending.
Date
Max Temperature 
1977-07-13 92
1977-07-14 89
1977-07-15 90
1977-07-16 96
1977-07-17 95
1977-07-18 95
1977-07-19 99
1977-07-20 90
1977-07-21 99

 

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5 minutes ago, bluewave said:

The equipment was out in the open before the tree growth began to block the sensors in the 1990s. The NYC thermometer in July 1977 was warmer than Newark and LGA. Most heatwaves before the 90s featured NYC highs more in line the other urban sites. A mesonet on the Great Lawn in Central Park would probably be 3-4° warmer on sunny days in the summer than the current ASOS under the dense vegetation near the castle. 
 

Data for NY CITY CENTRAL PARK, NY
Click column heading to sort ascending, click again to sort descending.
Date
Max Temperature 
1977-07-13 93
1977-07-14 92
1977-07-15 96
1977-07-16 98
1977-07-17 97
1977-07-18 100
1977-07-19 102
1977-07-20 92
1977-07-21 104


 

Data for NEWARK LIBERTY INTL AP, NJ
Click column heading to sort ascending, click again to sort descending.
Date
Max Temperature 
1977-07-13 92
1977-07-14 91
1977-07-15 93
1977-07-16 97
1977-07-17 99
1977-07-18 98
1977-07-19 100
1977-07-20 90
1977-07-21 102


 

Data for LAGUARDIA AIRPORT, NY
Click column heading to sort ascending, click again to sort descending.
Date
Max Temperature 
1977-07-13 92
1977-07-14 89
1977-07-15 90
1977-07-16 96
1977-07-17 95
1977-07-18 95
1977-07-19 99
1977-07-20 90
1977-07-21 99

 

Even though it is dense you can still clearly see it from satellite view. 

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17 minutes ago, wthrmn654 said:

Even though it is dense you can still clearly see it from satellite view. 

But the thermometer stays in the shade which keeps it 3-4° colder than out in the open in the Park.

http://www.weather2000.com/ASOS/NYC_ASOS.html

Central Park Weather: Vegetative Overgrowth Affecting Weather Readings - WABC-TV


4F4E63AA-FF39-41A4-A50D-36197ECF5BE0.jpeg.e9aa7bd1836fb5194aa6cbb08357b096.jpeg

 

3AE44670-D710-4990-8A00-179000B044CE.jpeg.06cd27f4601a475f1898e0a0a22d2ceb.jpeg

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6 minutes ago, LIWeatherGuy29 said:

Not a drop of rain here in Southwest Nassau County today. Storms were North and East of here.

Rain is desperately needed there. Lawns down in Long Beach look practically charred. Hopefully we can have a more widespread convective day soon where storms can fire there. Up here it’s a total steam bath once again, like the Amazon. 

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1 minute ago, TWCCraig said:

Insane for LGA to reach a high temperature of 97 after 7PM

I think these hot summer nights may just get worse in the cities. They just keep building, so much traffic, the heat island affect increases. I remember in Florida the heat that would come off of the cinder block houses, just multiply that by who knows how much in NYC. Meanwhile still a sultry 86 degrees here after a high of 91. 

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Well,  I reached 99* at 7:15pm today as heat collected on my high rise balcony.       Here is a summary of today's T's here.

[Better to explain the 80 at NYC while EWR was at 100 at the same time.]      The passing rain does not seem to explain this.   The leaves stayed wet maybe?    NYC ended at 91.

78*(90%RH) here at 7am.      80* at 7:30am.     82*(83%RH) at 9am.      83*/84* basically from 10am to Noon.       Down to 81* at 1pm as storms passed well to the north.        86* at 3pm.       90* at 3:15pm.        91* at 3:30pm.      94*(54%RH) at 4pm---feels like 106.      97*(38%) at 6pm---feels like 102.   98*(38%RH) at 7pm.      Reached 99* at 7:30pm.        90* at 9pm.      89* at 10pm.      There was no rain here.      Thunder was faint.

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The next 8 days are averaging  87degs.(78/96) or +9.

Month to date is  78.9[+1.5].        Should be  81.0[+3.4] by the 30th.

Reached 99 here late yesterday.

Today:   95-100, wind w. to sw., breezy late, m. sunny.

High T at EWR is +6 over NYC for the last 3 days.     Why?

The Tamer (than the OP) GFS Ens.:       This looks like a solid +6 by sight, on the next 16days.     A Bore by next Tues.

1658448000-FNUylrsjsOo.png

81*(66%RH) here at 7am.    82* at 7:15am.        84* at 8am.      85*(52%RH) at 9am.       T very stable for the last 3 hours        86* at Noon.        89*/88* at 2pm(50%-56%RH).       85* at 3:30pm.        86*/85* at 5pm.        82*70%RH) at 6pm.        Back to 87* at 7pm.

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