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August finished with a mean temperature of 75.1° in New York City. That was 1.0° below normal. That ended a streak of 8 consecutive warmer than normal months.

Out West, a historically hot summer is concluding. Phoenix reached 100° for the 92nd time this summer making summer 2024 the first summer on record where every high temperature was 100° or above. Fresno, Las Vegas, Needles, Palm Springs, and Phoenix are among cities registering their hottest summer on record.

Showers and thundershowers are likely tonight into tomorrow. High temperatures will generally reach the upper 70s and lower 80s, but a few locations could top out in the middle 80s.

Another shot of cooler air will arrive early next week. Afterward, high temperatures will mainly reach the middle and upper 70s.

Overall, the first week of September will likely wind up somewhat cooler than normal. Moreover, it is somewhat more likely than not that September could wind up becoming New York City's second consecutive cooler than normal month. The last time New York City saw two consecutive cooler than normal months was May-June 2023.

The ENSO Region 1+2 anomaly was -0.3°C and the Region 3.4 anomaly was 0.0°C for the week centered around August 21. For the past six weeks, the ENSO Region 1+2 anomaly has averaged -0.35°C and the ENSO Region 3.4 anomaly has averaged 0.00°C. Neutral ENSO conditions will likely evolve into a La Niña event during the fall.

The SOI was +22.03 today.

The preliminary Arctic Oscillation (AO) was +1.186 today.

 

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Records:


Highs:

EWR: 102 (1953)
NYC: 100 (1953)
LGA: 100 (1953)
JFK: 97 (2010)


Lows:

EWR: 47 (1934)
NYC: 50 (1976)
LGA: 52 (1976)
JFK: 46 (1965)

Historical:

 

1886 - A magnitude 7.3 earthquake shook Charleston, South Carolina around 9:50 pm on this day. This earthquake is the most damaging quake to occur in the southeast United States. This earthquake caused 60 deaths and between 5 to 6 million dollars in damage to over 2,000 buildings in the southeastern United States.

1915 - The temperature at Bartlesville, OK, dipped to 38 degrees to establish a state record for the month of August. (The Weather Channel)

1922 - An incredible hailstorm occurred near West Chester, PA dropped so much hail that fields were covered with up to two feet of drifted hail the next day.

1935 - The most intense hurricane to make landfall was a modest tropical depression on this day. Called the Labor Day Hurricane, this storm went through phenomenal intensification to become a Category 5 hurricane by September 2nd.

1954 - Hurricane Carol swept across eastern New England killing sixty persons and causing 450 million dollars damage. It was the first of three hurricanes to affect New England that year. (David Ludlum)

1971 - The low of 84 degrees and high of 108 degrees at Death Valley, CA, were the coolest of the month. The average daily high was 115.7 degrees that August, and the average daily low was 93.4 degrees. (The Weather Channel)

1984 - Lightning ignited several forest fires in Montana, one of which burned through 100,000 acres of timber and grassland. (The Weather Channel)

1987 - Eight cities in Washington and Oregon reported record high temperatures for the date, including Eugene OR and Portland OR with afternoon highs of 102 degrees. The high of 102 degrees at Portland smashed their previous record for the date by twelve degrees. Frost was reported in South Dakota. Aberdeen SD established a record for the month of August with a morning low of 32 degrees, and Britton SD dipped to 31 degrees. (The National Weather Summary)

1988 - August ended on a relatively mild and tranquil note for most of the nation. Forest fires in the northwestern U.S. scorched 180,000 acres of land during the last week of August. (The National Weather Summary)

1989 - Thunderstorms developing along a stationary front spread severe weather from Minnesota to Indiana through the course of the day and night. Thunderstorms in Minnesota produced baseball size hail near Saint Michael and Hutchinson, and drenched Moose Lake with nine inches of rain in six hours. Tucson AZ hit 100 degrees for a record 79th time in the year, surpassing a record established the previous year. (The National Weather Summary) (Storm Data)

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The atmosphere is becoming so moist that we don’t even need a tropical storm or hurricane to produce this type of extreme flash flooding anymore. We began to see this back in August 2011 when another unnamed low pressure system with training thunderstorms produced more impressive flash flooding in spots than Irene did a few weeks later. The same went for the unnamed system at Islip in August 2014. 

 

 

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1 hour ago, Brian5671 said:

Bust on the rain.   Barely anything the last 2 weeks now.  Great for the flood areas cleanup though.

An overall bust for sure but did ok locally with .88".  Just enough to moisten the top soils.  Looks like back to dry and very pleasant temperature patter.  I'll take it!

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3 hours ago, winterwarlock said:

after that scorcing start to the month, huge surprise it ended up slightly below normal although Imby not so sure it was below normal

Yeah I think it's because of the week where Debby hit, and then the other week that was like a fall preview with cool daytime highs that were way BN.

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