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July 2023


Stormlover74
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There's some real heat potential to end the month but will it verify.

GFS has a massive CONUS wide 594-600+ ridge that would result in widespread 95+ temps if not 100+ readings over a large chunk of the country including us. 

Combine that with high dews and it's a recipe for disaster 

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9 hours ago, Allsnow said:

It seems odd that ewr has hit 100 several times while these other major stations haven’t done it once in the past 11 years 

Downtown Philly has made to 100° numerous times in recent years.  But the airport lags by a few degrees since it’s in the marshy area along the Delaware with slightly cooler breezes on S to SW flow.  Very few westerly flow heat events in recent years which the airport needs for 100° heat.


 

Time Series Summary for Philadelphia Center City Area, PA (ThreadEx) - Jan through Dec
Click column heading to sort ascending, click again to sort descending.
Rank
Year
Highest Max Temperature 
Missing Count
1 2023 94 184
2 2022 99 2
3 2021 100 2
4 2020 99 115
5 2019 100 14
6 2018 101 25
7 2017 98 1
8 2016 99 7
9 2015 97 0
10 2014 96 2
11 2013 99 1
12 2012 101 0
13 2011 104 3
14 2010 103 1


 

Time Series Summary for PHILADELPHIA INTL AP, PA - Jan through Dec
Click column heading to sort ascending, click again to sort descending.
Year
Highest Max Temperature 
Missing Count
2023 95 166
2022 99 0
2021 97 0
2020 97 0
2019 98 0
2018 98 0
2017 96 0
2016 98 0
2015 96 0
2014 96 0
2013 98 0
2012 101 0
2011 103 0
2010 103 0


The airport has only averaged 36 days reaching 90° since 2010 vs 42 days in the city center.


 

Monthly Number of Days Max Temperature >= 90 for PHILADELPHIA INTL AP, PA
Click column heading to sort ascending, click again to sort descending.
Year
Apr
May
Jun
Jul
Aug
Sep
Oct
Season
Mean 0 2 6 15 9 3 0 36
2022 0 3 5 19 19 2 0 48
2021 0 3 9 10 15 0 0 37
2020 0 0 5 21 10 0 0 36
2019 0 1 4 18 8 3 1 35
2018 0 1 4 11 10 4 0 30
2017 0 3 6 11 4 2 0 26
2016 0 3 5 16 17 5 0 46
2015 0 1 7 10 12 7 0 37
2014 0 0 3 11 3 2 0 19
2013 0 3 4 12 0 1 0 20
2012 0 2 7 21 8 1 0 39
2011 0 3 5 21 4 0 0 33
2010 0 2 15 19 12 7 0 55


 

Monthly Number of Days Max Temperature >= 90 for Philadelphia Center City Area, PA (ThreadEx)
Click column heading to sort ascending, click again to sort descending.
Year
Apr
May
Jun
Jul
Aug
Sep
Oct
Season
Mean 0 3 8 17 12 4 0 42
2022 0 2 6 21 19 2 0 50
2021 1 5 11 17 16 3 0 53
2020 M M M 20 13 1 0 34
2019 0 2 6 21 14 5 1 49
2018 0 5 6 14 19 7 0 51
2017 0 3 8 14 10 3 0 38
2016 0 5 7 16 21 4 0 53
2015 0 2 9 10 14 7 0 42
2014 0 1 6 13 4 5 0 29
2013 1 2 6 14 3 1 0 27
2012 0 2 6 21 8 2 0 39
2011 0 3 6 20 4 0 0 33
2010 1 2 16 18 11 5 0 53
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The next 8 days are averaging    80degs.(72/88) or +2.

Month to date is    79.6[+2.3].        Should be    79.7[+2.2] by the 27th.

Reached 82 here yesterday.

Today:   78-82, wind variable, cloudy, Rain 4pm?, 72 tomorrow AM.

73*(85%RH) here at 7am.      72* at Noon.        79* at 3pm.        82* at 4pm.     83* at 4:30pm(H.I. of 90)    84* at 5pm.

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75 / 73 storms and more heavy rain passed through this morning.  Mostly cloudy but should see more breaks by noon.  Warm , humid mid - upper 80s, perhaps 90 in the hot spots.  Thu (7/20) a drier day warm  and still humid with scattered storms mid 80s.  Fri (7/21) front will bring more widespread storms.  Cloudy, and ome more soakers.

 

Sat (7/22) - Tue (7/25) drier times and cool back near normal with less humidity.  Wouldnt rule out some showers or storms on Sun or Tue (7/26).

 

7/25 and beyond the Western ridge is building into the central US and the trough over the northeast is lifting or splitting as the expanding Western Atlantic Ridge builds heights along the east.  The sw flow will bring in hot weather with stronger pieces of the heat into the area to end the month on a very hot note.

 

GOES16-NE-GEOCOLOR-600x600.gif   

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12 hours ago, winterwarlock said:

Why the heck is rain now in the forecast for Wednesday 

 

Models truly blow

I remember looking at the CMC 4 days ago and it showed a significant batch of rain moving through today. I was surprised because all the other models had it dry, but we've certainly seen this before. Sometimes the CMC does a good job picking up on things that other models miss in the medium range. It's an underrated model. 

Looking at radar you can see the bigger batch of steady rain is missing us just to the south, but there will be some scattered showers and downpours up here. 

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21 minutes ago, winterwx21 said:

I remember looking at the CMC 4 days ago and it showed a significant batch of rain moving through today. I was surprised because all the other models had it dry, but we've certainly seen this before. Sometimes the CMC does a good job picking up on things that other models miss in the medium range. It's an underrated model. 

Looking at radar you can see the bigger batch of steady rain is missing us just to the south, but there will be some scattered showers and downpours up here. 

And tomorrow looks dry now like it was originally showing

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15 hours ago, donsutherland1 said:

Tomorrow will be variably cloudy and warm. Some locations could experience a shower or thunderstorm. Afterward, the remainder of the week and weekend will be mainly dry.

An extreme heat event continues to grip the Southwest. Cities such as Las Vegas, Phoenix, and Tucson could see readings continue to rise toward or above their record daily levels over the next few days.

Today's highlights included:

Austin: 107° (tied record set in 1918 and tied in 1923)
Cotulla: 109° (old record: 107°, 2022)
Del Rio: 108° (old record: 106°, 2018)
El Paso: 109° (old record: 106°, 1980)
Imperial: 117° (tied record set in 2009)
Phoenix: 118° (old record: 115°, 1989) ***Record 19th consecutive 110° or above day***
Roswell: 111° (old record: 107°, 2019) ***Tied July record***
San Angelo: 110° (old record: 107°, 1989 and 2022) ***6th 110° or above day, which doubles the old record of 3 from 1944***
San Antonio: 104° (tied record set in 1918)
Tucson: 112° (old record: 109°, 1989 and 1992) ***Record-tying 10th 110° or above day

The ENSO Region 1+2 anomaly was +3.4°C and the Region 3.4 anomaly was +1.1°C for the week centered around July 12. For the past six weeks, the ENSO Region 1+2 anomaly has averaged +2.80°C and the ENSO Region 3.4 anomaly has averaged +0.97°C. El Niño conditions have developed and will likely continue to strengthen through at least the summer. The probability of an East-based El Niño event has increased.

The SOI was -13.36 today.

The preliminary Arctic Oscillation (AO) was +0.465 today.

On July 16 the MJO was in Phase 3 at an amplitude of 0.288 (RMM). The July 15-adjusted amplitude was 0.407 (RMM).

Based on sensitivity analysis applied to the latest guidance, there is an implied 76% probability that New York City will have a warmer than normal July (1991-2020 normal). July will likely finish with a mean temperature near 79.2° (1.7° above normal).

 

Austin tied their record of most 105+ degree days in a row yesterday and will likely exceed it quite a bit since there’s no end to the hot pattern. 

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5 minutes ago, jm1220 said:

Austin tied their record of most 105+ degree days in a row yesterday and will likely exceed it quite a bit since there’s no end to the hot pattern. 

So many records are being set. El Paso has blown its record for 100+ degree days out of the water (33 and counting).

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1 hour ago, forkyfork said:

hotter trends on all the models last night. thank you so much :wub:

What is hotter?

You live in a humid tropical like climate now with a temperature between 85 and 95. Rarely more, rarely less.

And it all feels very similar: a sticky, buggy, shitty mess.

The 100s you want are as elusive as sub 20 degree winter days now

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Just now, the_other_guy said:

What is hotter?

You live in a humid tropical like climate now with a temperature between 85 and 95. Rarely more, rarely less.

And it all feels very similar: a sticky, buggy, shitty mess.

The 100s you want are as elusive as sub 20 degree winter days now

Can you fly him to Texas on your next flight? :lol:

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2 minutes ago, the_other_guy said:

What is hotter?

You live in a humid tropical like climate now with a temperature between 85 and 95. Rarely more, rarely less.

And it all feels very similar: a sticky, buggy, shitty mess.

The 100s you want are as elusive as sub 20 degree winter days now

we used to get summers where 90 was a struggle 

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