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July 2020 General Discussions & Observations Thread


Rtd208

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warmest 30 days in NYC since 1930...1876 had a 81.5 average from 6/24-7/23...could be a few others before 1930...2020 has a great chance to make the list...

1980...82.5

1999...81.9

2010...81.8

2005...81.8

2013...81.7

1955...81.6

1993...81.2

1988...81.1

1995...81.1

1966...81.0

2011...81.0

1983...80.9

1952...80.7

1944...80.3

2002...80.3

2016...80.3

1977...80.2

2006...80.1

2015...80.0

 

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The next 8 days are averaging 86degs., or 8degs. AN.

Month to date is +2.3[79.3].             Should be about +4.3[81.1] by the 30th.

79*(80%RH) here at 6am.          82*(82%RH) by 9am.        84*(83%RH) by Noon.       87*(78%RH) by 4pm.

 

t

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Numerous stations that are rural and urban have their warmest July monthly minimum temperature on record so far. Several of the stations recently set or tied their record in July 2019. 
 

Time Series Summary for MONTGOMERY ORANGE COUNTY AP, NY - Month of Jul
Click column heading to sort ascending, click again to sort descending.
Rank
Year
Lowest Min Temperature 
Missing Count
1 2020 57 10
2 2019 54 1
- 2013 54 0
- 2012 54 9

 

Time Series Summary for WESTCHESTER CO AP, NY - Month of Jul
Click column heading to sort ascending, click again to sort descending.
Rank
Year
Lowest Min Temperature 
Missing Count
1 2020 63 10
2 2019 61 0
- 2012 61 0

 

Time Series Summary for NEWARK LIBERTY INTL AP, NJ - Month of Jul
Click column heading to sort ascending, click again to sort descending.
Rank
Year
Lowest Min Temperature 
Missing Count
1 2020 67 10
2 2019 66 0
- 1994 66 0
- 1993 66 0

 

Time Series Summary for NY CITY CENTRAL PARK, NY - Month of Jul
Click column heading to sort ascending, click again to sort descending.
Rank
Year
Lowest Min Temperature 
Missing Count
1 2020 67 10
2 2008 66 0
3 2019 65 0
- 1993 65 0
- 1970 65 0
- 1955 65 0

 

Time Series Summary for LAGUARDIA AIRPORT, NY - Month of Jul
Click column heading to sort ascending, click again to sort descending.
Rank
Year
Lowest Min Temperature 
Missing Count
1 2020 68 10
- 2008 68 0
3 2019 67 0
- 1994 67 0
Time Series Summary for IGOR I SIKORSKY MEMORIAL AIRPORT, CT - Month of Jul
Click column heading to sort ascending, click again to sort descending.
Rank
Year
Lowest Min Temperature 
Missing Count
1 2020 64 10
- 2019 64 0
- 1994 64 0

 

Time Series Summary for DANBURY MUNICIPAL AP, CT - Month of Jul
Click column heading to sort ascending, click again to sort descending.
Rank
Year
Lowest Min Temperature 
Missing Count
1 2020 59 10
2 2012 56 0
3 2019 55 0
- 2013 55 0

 

Time Series Summary for ALBANY INTERNATIONAL AIRPORT, NY - Month of Jul
Click column heading to sort ascending, click again to sort descending.
Rank
Year
Lowest Min Temperature 
Missing Count
1 2020 59 10
2 2019 57 0
3 2008 56 0
- 2004 56 0
Time Series Summary for New Brunswick Area, NJ (ThreadEx) - Month of Jul
Click column heading to sort ascending, click again to sort descending.
Rank
Year
Lowest Min Temperature 
Missing Count
1 2020 63 10
2 2019 60 0
- 1931 60 0
- 1897 60 0

 

Time Series Summary for SUSSEX AIRPORT, NJ - Month of Jul
Click column heading to sort ascending, click again to sort descending.
Rank
Year
Lowest Min Temperature 
Missing Count
1 2020 58 10
2 2019 54 0
3 2013 53 0
- 2012 53 0
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Onward:

Friday: may still have some showers and isolated storms near I80 in NJ through LI and southward. 

Saturday: May be dry, but modeling still showing small chance isolated shower.

Sunday-Monday: Potential nw flow severe event?  Still cant get rid of this yet. Modeling has this I90 northward. IF it doesn't occur, then likely renewed heat wave where it doesn't end this week per other posts here...Sunday-Tuesday or Wednesday. Might get to near 97 again in the city- but for now I'm just thinking the rest of this week and allow the models to develop better consensus on short waves-heat and convective thrusts from Sunday the 26th-Wednesday the 29th. 729A/22

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Quick question:  Am a little frustrated with MDL not posting MOS since 7/6 and I know NWS wants buy in on the NBM and is ready to discontinue,  but myself,  I like MOS as an idea of concerns.  Is anyone able to acquire the GFS extended statistical guidance for locations in NJ and NYC... (not ALB).  Just point me in the right direction. Thanks much,

 Walt

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16 minutes ago, wdrag said:

Quick question:  Am a little frustrated with MDL not posting MOS since 7/6 and I know NWS wants buy in on the NBM and is ready to discontinue,  but myself,  I like MOS as an idea of concerns.  Is anyone able to acquire the GFS extended statistical guidance for locations in NJ and NYC... (not ALB).  Just point me in the right direction. Thanks much,

 Walt

Walt, try this link as MOS moved:

https://www.weather.gov/mdl/mos_getbull

F7DB2F27-83B6-40A3-A969-CD4506CD0C27.thumb.png.3b415b5cf333bda3641bcef4cf1bc2b9.png

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Looks like the move was part of the transition away from MOS development to the NBM. 

https://www.weather.gov/media/notification/scn20-47transition_mos_data.pdf

Service Change Notification 20-47
National Weather Service Headquarters Silver Spring MD 135 OM EDT Mon April 27th, 2020
We are also alerting MOS users that MDL has discontinued active development of MOS-based guidance products, with all efforts being directed toward the National Blend of Models (NBM).
NBM graphical and text products can be found at:
https://www.weather.gov/mdl/nbm_home

 

 

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86/73 quite a bit more humid again. bout 3 -4 hours of sun before clouds and potential storms arrive / cloud deck pushing into C-PA we'll see how much burns off before tracking here by 1/2 PM. More 90s today with a much higher heat index..  More of the same tomorrow with storms and clouds probably keeping maxes closer to 90 but sunny spots should rack up some mid 90s.  Friday toss up day looking to break the 90s streak for most sites but warmer less wet sites can continue the streak to day 6.  Saturday looks less onshore flow and warmer air should push temps into the upper 80s/ low 90s before stronger heat arrives Sun (7/26) - Tue (7/28).  850s near 20c we'll see if the strongest heat remains in the Balt/DC/DE area again but look for 95(+) and some upper 90s LGA/JFK/EWR perhaps NYC.  Outside chance of 100s still in the hot spots.

Strong cold front by Wed 7/29 with the ridge migrating west to end July and trough and storminess pushing east over the area.  Long range beyond there trough is pushing into the PAC NW by ealry August and strong heat building into the Rockies and Plains should eject east again and reach the area by Aug 4. Before that a 'cooler period'  7/30 - Aug 3 maybe at or just below avg,  and potentially wetter than normal.  We'll see how things progress and any shifting of the ridge more towards the plains than the Rockies.

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LGA moves into 2nd place for the most 95° days in July. Very unusual not to have any 100° days with 7 days reaching 95° or warmer. Almost like a summer version of February 2015 when several stations couldn’t drop to 0 with it being so cold. 

Time Series Summary for LAGUARDIA AIRPORT, NY - Month of Jul
Click column heading to sort ascending, click again to sort descending.
Rank
Year
Number of Days Max Temperature >= 95 
Monthly Max 
1 1999 11 101
2 2020 7 97
- 2012 7 101
- 1955 7 100

 

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1 hour ago, wdrag said:

Quick question:  Am a little frustrated with MDL not posting MOS since 7/6 and I know NWS wants buy in on the NBM and is ready to discontinue,  but myself,  I like MOS as an idea of concerns.  Is anyone able to acquire the GFS extended statistical guidance for locations in NJ and NYC... (not ALB).  Just point me in the right direction. Thanks much,

 Walt

Thanks UOFMIAMI and BLUEWAVE for your replies.  Couldn't get the MOS to work earlier, but now good with your link and also hadn't seen the transition announcement.  Thanks to you both. I'll be checking the NBM against GFS MEX MOS in some critical situations.  offline til about 1230P.  Walt 1029A/22

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1 hour ago, wdrag said:

Thanks UOFMIAMI and BLUEWAVE for your replies.  Couldn't get the MOS to work earlier, but now good with your link and also hadn't seen the transition announcement.  Thanks to you both. I'll be checking the NBM against GFS MEX MOS in some critical situations.  offline til about 1230P.  Walt 1029A/22

For about a week, that site also had not updated.

So far, at least as far as NYC is concerned, the NBE has been running about 3 degrees warmer than the MEX for high temperatures and about a degree warmer than the MEX for low temperatures. For today, the MEX showed a maximum temperature of 88 at NYC while the NBE had 91.

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10 minutes ago, donsutherland1 said:

For about a week, that site also had not updated.

So far, at least as far as NYC is concerned, the NBE has been running about 3 degrees warmer than the MEX for high temperatures and about a degree warmer than the MEX for low temperatures. For today, the MEX showed a maximum temperature of 88 at NYC while the NBE had 91.

It would be nice if we could get access to this...

https://ams.confex.com/ams/95Annual/webprogram/Paper261494.html

Monday, 5 January 2015: 1:30 PM
225AB (Phoenix Convention Center - West and North Buildings)
Phillip E. Shafer, NOAA/NWS, Silver Spring, MD; and D. E. Rudack

Manuscript (1.1 MB)

The Meteorological Development Laboratory (MDL) has recently developed an experimental suite of station-based, Model Output Statistics (MOS) guidance from the European Centre for Medium-Range Weather Forecasts (ECMWF) model. To date, guidance for temperature, dewpoint, wind speed and direction, sky cover, probability of precipitation, and precipitation type has been developed. One element that is important to aviation interests and public safety is thunderstorms. This paper describes the development of a MOS thunderstorm system for the ECMWF model and its performance when compared to climatology and corresponding MOS forecasts from the Global Forecast System (GFS) and North American Mesoscale (NAM) models. 

Equations for the probability of a thunderstorm and the conditional probability of a severe thunderstorm for 3-, 6-, 12-, and 24-h periods were developed over the CONUS from six years of ECWMF model output. Cloud-to-ground (CG) lightning data from the National Lightning Detection Network (NLDN) and severe weather reports collected by the Office of Climate Water and Weather Services (OCWWS) were used to define the predictand. Results from a k-fold cross-validation test indicate the new ECMWF thunderstorm guidance is superior to corresponding GFS MOS and NAM MOS forecasts, and in some cases, forecast skill and good reliability are achieved out as far as 240 hours in advance. This guidance will be incorporated into the experimental short-range and extended-range ECMWF MOS text bulletins which are restricted to NOAA/NWS use only, and will also be available to NWS forecasters in gridded format as part of an experimental ECMWF gridded MOS suite.

 

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7 minutes ago, SACRUS said:

clouds in PA to about Harrisburg, some burn off too.  Think we are partly sunny through 1:30 for most.  Should get most places to another 90.  Time will tell.

newark's a degree warmer than yesterday at this time with less SE influence

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Just now, SACRUS said:

 

89/73 here partly sunny and very steamy.

87/77 HI 99

The numbers might not show it, but It feels worse to me than those days with a heat advisory.  That humidity where everyone walking outside looks likes zombies. Also could be the cumulative effect of day after day heat.

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15 minutes ago, dWave said:

87/77 HI 99

The numbers might not show it, but It feels worse to me than those days with a heat advisory.  That humidity where everyone walking outside looks likes zombies. Also could be the cumulative effect of day after day heat.

87/77 here too.

This is a cooler version of what much of Long Island felt like during those heat advisory days.

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20 minutes ago, Cfa said:

87/77 here too.

This is a cooler version of what much of Long Island felt like during those heat advisory days.

ISP getting close to its first 70° average dew point July.

https://mesonet.agron.iastate.edu/plotting/auto/?_wait=no&q=76&network=NY_ASOS&station=ISP&season=jul&varname=dwpf&year=1893&hours=0-23&dpi=100&_fmt=png
9A87D495-FD77-4EFE-AAFA-83FD006DA3FF.png.be0a2af86b09b733d5c3fee31ecc09f9.png

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