July 2023

[winterwx21]

3 hours ago, Allsnow said:

90’s tomorrow? 

Yep hot but lower humidity the next 2 days. Dewpoints might get down to the high 50s tomorrow.

Late week into the weekend just looks like typical summer weather with higher humidity and isolated to widely scattered activity. 

[psv88]

Disgusting outside right now 

[WestBabylonWeather]

.30 total for the event IMBY

So much for heavy rain


.

[jm1220]

25 minutes ago, WestBabylonWeather said:

.30 total for the event IMBY

So much for heavy rain


.

Keep watering! 

[doncat]

4 hours ago, Stormlover74 said:

A bit over 3" since Tuesday. Just .22 yesterday

Just 1.08" here on si for the month.

[nycwinter]

 what a nice lovely day for this time of year temp in the low 80's dewpoint under 65 not bad at all..

[Rtd208]

Current temp 87/DP 68/RH 53%

[Roger Smith]

1936 has shown up the past two days in the historical info from Sacrus (always enjoy reading it) ... but before the 9th the heat had already set in further west and I don't think it was noted that a location in ND hit 122F or 50C, probably the highest temperature recorded outside of desert areas in the US. We had 120 to 121 F at Lytton BC in the 2021 heat dome (and that was before the town ignited and burned to the ground). 

Also not in the reports, Toronto had three consecutive days (8th-10th) with 105F, breaking the all-time record of 103F set on July 3rd, 1911 there. Those remain the four warmest days of record at Toronto, one day (Aug 13, 1918) has hit 102F and two have reached 101F (Aug 7, 1918 and Aug 25, 1948). Since 100F on Sep 2, 1953 the only 100F reading at Toronto's downtown location was 101F in July 2011. It was 99F in July 1988.

The upper air charts for July 1936 must have been spectacular, I would imagine a 602 or 603 high over Missouri to North Carolina at the height of the heat wave (it backed off a bit after July 13th although the severe heat continued over much of the central plains region all month). The heat returned briefly around August 3rd to 5th but in general the second half of July in the eastern states was cooler and quite dry as the upper ridge must have retrogressed somewhat allowing high pressure to build down from Quebec. 

[WestBabylonWeather]

My humidity dropped 31% in 24 hours. Currently sitting at 65%

What a damn difference. Can sit outside and feel decent right now.


.

[Picard]

Gorgeous evening, at least compared to what it's been recently.

[psv88]

Feels great outside 

[donsutherland1]

Extreme rainfall will bring additional flooding to parts of Vermont tonight. The New York City and Philadelphia regions will enjoy a quiet but warm night.

More very warm and perhaps hot weather will develop starting tomorrow. Friday could be briefly cooler due to widespread showers and thunderstorms.

An extreme heat event will likely develop in the Southwest later this week even as Phoenix has seen its hottest first 10 days of July (100.0° vs. the 2017 record of 99.4°). Cities such as Tucson and Phoenix could see readings rise toward record daily levels. The excessive heat could extend across New Mexico and a large part of Texas.

The ENSO Region 1+2 anomaly was +3.3°C and the Region 3.4 anomaly was +1.0°C for the week centered around July 5. For the past six weeks, the ENSO Region 1+2 anomaly has averaged +2.78°C and the ENSO Region 3.4 anomaly has averaged +0.92°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 +9.29 today.

The preliminary Arctic Oscillation (AO) was -1.326 today.

On July 8 the MJO was in Phase 2 at an amplitude of 1.311 (RMM). The July 7-adjusted amplitude was 1.505 (RMM).

Based on sensitivity analysis applied to the latest guidance, there is an implied 67% probability that New York City will have a warmer than normal July (1991-2020 normal). July will likely finish with a mean temperature near 79.0° (1.5° above normal).

 

[jm1220]

Feels way better outside than it’s been. Enjoying it when I can. 

[SACRUS]

7/10

EWR: 88
BLM: 87
New Brnswck: 87
JFK: 87
ACY: 86
LGA: 86
PHL: 86
TEB: 86
TTN: 85
ISP: 84
NYC: 84

[SACRUS]

3 hours ago, Roger Smith said:

1936 has shown up the past two days in the historical info from Sacrus (always enjoy reading it) ... but before the 9th the heat had already set in further west and I don't think it was noted that a location in ND hit 122F or 50C, probably the highest temperature recorded outside of desert areas in the US. We had 120 to 121 F at Lytton BC in the 2021 heat dome (and that was before the town ignited and burned to the ground). 

Also not in the reports, Toronto had three consecutive days (8th-10th) with 105F, breaking the all-time record of 103F set on July 3rd, 1911 there. Those remain the four warmest days of record at Toronto, one day (Aug 13, 1918) has hit 102F and two have reached 101F (Aug 7, 1918 and Aug 25, 1948). Since 100F on Sep 2, 1953 the only 100F reading at Toronto's downtown location was 101F in July 2011. It was 99F in July 1988.

The upper air charts for July 1936 must have been spectacular, I would imagine a 602 or 603 high over Missouri to North Carolina at the height of the heat wave (it backed off a bit after July 13th although the severe heat continued over much of the central plains region all month). The heat returned briefly around August 3rd to 5th but in general the second half of July in the eastern states was cooler and quite dry as the upper ridge must have retrogressed somewhat allowing high pressure to build down from Quebec. 

 

Roger thanks  for the additional color on the record heat from 1936

here is another great summary from wundergrnd

 

https://www.wunderground.com/cat6/North-Americas-Most-Intense-Heat-Wave-July-and-August-1936

[HeadInTheClouds]

Perfect late afternoon/evening in HV. 

[Rtd208]

High for the day was 90 here.

Current temp 75/DP 61/RH 64%

[Rtd208]

https://www.spc.noaa.gov/products/outlook/day3otlk.html

 

[dmillz25]

Feels much better than it has. 70/55

[CIK62]

GONE MAD?

The next 8 days are averaging    84degs.(75/94) or +6.

Reached 92 here yesterday for an hour---6 to 7pm.

Today:    87-92, wind w., m. sunny, 75 tomorrow AM.

71*(62%RH) here at 7am.    73* at 8am.      80* at Noon.      82* at 1pm.      84* at 3pm.       85* at 4pm.      Reached 89* at 7pm.

[SACRUS]

 

70 / 61 and partly to mostly sunny.  Warm one on tap as we move into the seasons first sustained heatwave and overall warm to hot period.  Upper 80s to low 90s for those that start the heatwave today.  Very isolated storms if any later this evening (doubt any, although one did pop last night into NW NJ).  Wed (7/12) stronger heat into the area with low to mid 90s.  By Thu (7/13) even stronger heat pushing up on s/sw flow 850 MB temps >18c with humidity and isolated storms chances.  Some mid to even perhaps upper 90s in spots.   Fri (7/14) higher humidity and continued hot more scattered storms (potentil soakers) with more clouds around (ala last holiday weekend).  Where and when the sun is out it heats up rapidly under >16-18C 850 mb temps,

 

Sat (7/15) and beyond  - overall warm to hot and humid with storms chances.  The western atlantic ridge is epanding to edge the east coast while the western rockies ridge balloons  trough remains into the GL.  The east stays warm to hot as the stronger heat is nearby and skirts the area with storms chances.   Way beyond perhaps trough moves in and out quickly towards the 24 and the western heat poised to blast east.

 

 

[SACRUS]

 

Records:

 

Highs:

 

EWR: 100 (1988) the hot summer of 88 rolled out - records in each month
NYC:  98 (1988) one of the two 7.12 non century mark records for NYC in early July
LGA: 98 (1988)

 

 

Lows:

 

EWR: 54 (1934)
NYC: 57 (1898)
LGA: 62 (1945) one of 7 warmest record lows

 

Historical:

 

1888 - Heavy snow reached almost to the base of Mt. Washington, NH, and the peaks of the Green Mountains were whitened. (David Ludlum)

1987 - Early morning thunderstorms produced wind gusts to 90 mph at Parkston, SD, and wind gusts to 87 mph at Buffalo, MN. Later in the day strong thunderstorm winds at Howard WI collapsed a circus tent injuring 44 persons. (The National Weather Summary) (Storm Data)

1988 - Thunderstorms produced heavy rain in southern Texas, with totals ranging up to 13 inches near Medina. Two men drowned when their pick-up truck was swept into the Guadalupe River, west of the town of Hunt. Ten cities in the eastern U.S. reported record high temperatures for the date. Baltimore, MD, reported a record high reading of 102 degrees for the second day in a row. (Storm Data) (The National Weather Summary)

1989 - Afternoon and evening thunderstorms produced severe weather from North Dakota to Indiana. Thunderstorms in North Dakota produced tennis ball size hail at Carson. Thunderstorms in Indiana produced wind gusts to 75 mph at Fort Wayne. Five cities in the Southern Atlantic Coast Region reported record high temperatures for the date, including Lakeland, FL, with a reading of 100 degrees. (The National Weather Summary) (Storm Data)

 

1990: The costliest hailstorm in U.S. history occurred along the Front Range of the Colorado Rockies. (Denver, Colorado): Softball-sized hail destroyed roofs and cars, causing more than $600 million in total damage.

 

 

[SACRUS]

13 hours ago, Roger Smith said:

1936 has shown up the past two days in the historical info from Sacrus (always enjoy reading it) ... but before the 9th the heat had already set in further west and I don't think it was noted that a location in ND hit 122F or 50C, probably the highest temperature recorded outside of desert areas in the US. We had 120 to 121 F at Lytton BC in the 2021 heat dome (and that was before the town ignited and burned to the ground). 

Also not in the reports, Toronto had three consecutive days (8th-10th) with 105F, breaking the all-time record of 103F set on July 3rd, 1911 there. Those remain the four warmest days of record at Toronto, one day (Aug 13, 1918) has hit 102F and two have reached 101F (Aug 7, 1918 and Aug 25, 1948). Since 100F on Sep 2, 1953 the only 100F reading at Toronto's downtown location was 101F in July 2011. It was 99F in July 1988.

The upper air charts for July 1936 must have been spectacular, I would imagine a 602 or 603 high over Missouri to North Carolina at the height of the heat wave (it backed off a bit after July 13th although the severe heat continued over much of the central plains region all month). The heat returned briefly around August 3rd to 5th but in general the second half of July in the eastern states was cooler and quite dry as the upper ridge must have retrogressed somewhat allowing high pressure to build down from Quebec. 

 

7/11: 1936: From July 5-17, temperatures exceeding 111 degrees in Manitoba and Ontario claimed 1,180 lives (mostly the elderly and infants) during the most prolonged, deadliest heat wave on record. Four hundred of these deaths were caused by people who drowned seeking refuge from the heat. In fact, the heat was so intense that steel rail lines and bridge girders twisted, sidewalks buckled, crops wilted and fruit baked on trees. Some record temperatures include; 112 degrees at St. Albans and Emerson, Manitoba, 111 at Brandon, Manitoba, 108 at Atikokan, Ontario, and Winnipeg, Manitoba.

[snywx]

13.23” since 6/12. Some areas are over 15” for the month up here. No bueno for the Hudson valley 

[nycwinter]

what a lovely evening and start to the day.. no weather person predicted dewpoints in the mid 50's in the city...

[IrishRob17]

28 minutes ago, snywx said:

13.23” since 6/12. Some areas are over 15” for the month up here. No bueno for the Hudson valley 

Yeah, we need a break. 14.30” here over that same time period. 

[psv88]

85/66/87.

was 62 this morning but it’s already pretty uncomfortable out there again. Dews on the rise!

[jm1220]

18 minutes ago, psv88 said:

85/66/87.

was 62 this morning but it’s already pretty uncomfortable out there again. Dews on the rise!

As long as winds stay W or NW humidity shouldn’t be too big a deal but temps will be hotter on that wind direction so it probably all evens out. We wont have a problem hitting 90 today. 

[doncat]

First sub 70° temp here in ten days with 66° this am.

[Allsnow]

Thursday night into Friday looks like a northeast Nj/nyc convection threat. Reminds me of the the June 25th activity