September 2024

[lee59]

13 days here this summer with 90+ degree days.

[steve392]

Leaving citi field there was a cool breeze coming from long Island sound. Made it chilly driving home. 

[gravitylover]

47° for the low here

[BlizzLuv]

Brisk 48 in Hillsboro when I woke up.

[MJO812]

60 here

Beautiful Autumn morning

[SACRUS]

 

Down to 51 now to 59 / 47.   Looks like 3 more days of this (through Thursday) cooler than normal and drier / mainly sunny with mid 70s to near 80.   A bit warmer on Friday back to the 80s for most ahead of the next trough pushing through rain unfortunately over this weekend *sat and sun (as it looks now).  Beyond there more of the same with ridge west and north  and trough  underneath - onshore flows and temps near or cooler than normal and looking drier Sep 9 - 13.  Watch the GOM for any tropical systems and along or right in the EC. Warmer migration towards and or post mid month.

 

[SACRUS]

 

Week ahead (much or most of this falls this weekend 9/7-8.  

[SACRUS]

 

Records:

Highs:

EWR: 100 (1993)
NYC: 99 (1929)
LGA: 95 (1993)
JFK: 93 (2015)


Lows:


EWR: 51 (1967)
NYC: 50 (1893)
LGA: 54 (1967)
JFK: 62 (1967)

Historical:

 

1821 - A hurricane made landfall at Long Island, near Kennedy Airport, then moved through western Connecticut. The hurricane produced a record tide at New York City. (David Ludlum)

1821: Known as the 1821 Norfolk Long Island Hurricane, this storm ripped up the Mid-Atlantic and Northeast coast September 3 and 4 – coinciding with Labor Day (before the holiday was established). 

 

1834: A strong hurricane made landfall near Georgetown, South Carolina. 

 

1930: A Category 4 hurricane devastates the Dominican Republic on this day. This storm killed more than 8,000 individuals, which is it the fifth deadliest Atlantic hurricane on record. 

1953 - The temperature at Erie PA reached 99 degrees, and Stroudsburg PA established a state record for September with a reading of 106 degrees. (The Weather Channel)

1961 - Denver, CO, received 4.2 inches of snow, their earliest snow of record. (Sandra and TI Richard Sanders - 1987)

1970 - During the early evening hours, in the midst of a severe hailstorm at Coffeyville KS, a stone 17.5 inches in circumference and nearly two pounds in weight was recovered. It was the largest measured hailstone in U.S. weather records. Average stone size from the storm was five inches in diameter, with another stone reportedly eight inches in diameter. (David Ludlum)

 

1979: Hurricane David made landfall in south Florida as a Category 2 storm. It caused 15 deaths in the US. Hurricane David was a Category 5 over the Dominican Republic were over 2,000 people died. 

 

1987 - Temperatures dipped into the 40s and 50s for morning lows across much of the eastern half of the country, with eleven cities reporting record lows for the date. Pellston MI tied Gunnison CO for honors as the cold spot in the nation with a low of 30 degrees. Smoke from forest fires darkened skies in southern Oregon and northern California. (The National Weather Summary)

1988 - Sixteen cities in the northwestern U.S. reported record high temperatures for the date. Highs of 89 degrees at Stampede Pass WA and 116 degrees at Redding CA established records for the month of September. Readings of 98 degrees at Spokane WA and 100 degrees at Yakima WA equalled records for September. (The National Weather Summary)

1989 - Thunderstorms developing ahead of a cold front produced severe weather from Minnesota to Nebraska during the day and evening. Evening thunderstorms in Nebraska produced wind gusts to 100 mph at Valentine and Gretna, and produced baseball size hail at Lewellen. Thunderstorms in Arizona produced 2.20 inches of rain in forty minutes at Green Valley, and wind gusts to 60 mph. Eight cities in Texas and Florida reported record high temperatures for the date, including Victoria TX and San Antonio TX, each with a reading of 102 degrees. (The National Weather Summary) (Storm Data)

[SACRUS]

A few record lows are going to be close for EWR and TTN Wed

[psv88]

54

[FPizz]

48

[MANDA]

Low this morning of 46.  Perfect weather!

[MANDA]

Minimum temps this morning:

[Stormlover74]

3 hours ago, SACRUS said:

A few record lows are going to be close for EWR and TTN Wed

That's surprising.  I would think record lows are in the upper 40s now

[SACRUS]

1 hour ago, Stormlover74 said:

That's surprising.  I would think record lows are in the upper 40s now

52 (1997)

[winterwx21]

Feels amazing out there with the dewpoint at 40. That with sunny skies and temps in the mid 70s makes this an easy top 10 day of the year. 

[SACRUS]

 

 

74 / 39 blue skies nothin but blue skies

 

[TriPol]

It's like we hit September and the mid-upper 80s have disappeared. 

[Stormlover74]

Models are wettish for the weekend. Half inch to 1 inch now

[the_other_guy]

10 minutes ago, TriPol said:

It's like we hit September and the mid-upper 80s have disappeared. 

You mean like every other year until 15 years ago?

 

Amen!

 

Dont worry, in our new climate regime, the last week will be +15 and we will be AN or close to it for month

[donsutherland1]

While the West continues to fry, the East continues to enjoy comfortable temperatures.

Much of this week will feature refreshing temperatures and low humidity. Temperatures will mainly top out in the middle and upper 70s. Fair weather should persist through Friday. Showers are possible on Saturday.

Overall, the first week of September will likely wind up somewhat cooler than normal. A ridge in the West, trough in the East pattern could persist into the second week of the month allowing for additional cooler than normal days.

As a result, parts of the West that just went through their hottest summer on record could remain abnormally warm through the first half of the month. As extreme heat spreads back into the Pacific Northwest starting tomorrow, Portland could tie or break its record for latest 100° day on record. Salem will likely reach 100° on one or two days, which would break the annual record of 7 100° or above days that was set in 1988.

Today, Phoenix reached 100° for the 100th consecutive day. The old record was 76 days. Blythe, East Mesa, and Needles also recorded their 100th consecutive 100° day. Phoenix is, by far, the largest U.S. city ever to experience such a streak. East Mesa is the second largest.

The ENSO Region 1+2 anomaly was -0.5°C and the Region 3.4 anomaly was -0.2°C for the week centered around August 28. 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 -0.07°C. Neutral ENSO conditions will likely evolve into a La Niña event during the fall.

The SOI was +4.99 today.

The preliminary Arctic Oscillation (AO) was -0.300 today.

 

[bluewave]

Good radiational cooling tonight for the usual spots. 
 

[Allsnow]

1 hour ago, bluewave said:

Good radiational cooling tonight for the usual spots. 
 

These cool nights will help the foliage in October 

 

 

[SACRUS]

Highs:
 

 

PHL: 76
JFK: 76
New Brnswck: 75
TTN: 75
LGA: 75
EWR: 74
ISP: 74
TEB: 74
NYC: 74
BLM: 73
ACY: 73

[Roger Smith]

Daily records for NYC ... info is partly available in daily climate reports, but this log adds features like low max, high min, and 2d rainfall totals. 

For 2d rainfall totals, note, records indicated are for that day and previous day. In a few cases, previous day has no rainfall (*) and in a few other cases, it had all the noted rainfall (**) (e.g. Sep 8 1934 had all rainfall noted as 2d record ending Sep 9 1934).

Also, note a few daily low min records have daily max in brackets if value was not itself a record low max. In Sep, only six days actually set both on same day -- three were tied (for low max record). 

^ indicates a note below calendar with additional information.

 

===<<< SEPTEmBER RECORDS >>>===

 

Date ____ high max __ high min ______ low max ____ low min  _____ 1d rain ____ 2d rain ___ also 1d, 2d 

Sep 01 ___ 97 1953 ____ 76 1898^_______ 59 1869 _____51 1869 _______ 7.13 2021 ___ 7.13 2021*__ 3.84 1927

Sep 02 ___102 1953 ____79 1898 _______ 62 1869_____51 1886 ________2.12 1899 ___ 7.23 2021 __ 3.88 2d 1927^

Sep 03 ___ 99 1929 ____ 78 1898 _______ 62 1935 _____50 1885, 93 ___ 3.32 1969 __ 3.44^1974 (0.18+3.26) 

Sep 04 ___ 97 1929^____78 1898 _______ 66 1984 _____47 1872, 83 ___ 3.48 1913 ___ 6.28 1969 (3.32+2.96) _ 3.48 1913*

Sep 05 ___ 94 1985 ____ 77 1898^_______62 1926 _____51 1963 (63) ___ 2.45 1878 __ 4.14 1913 __ 2.80 1878 2d

Sep 06 ___ 97 1881 ____ 78 1985 _______ 56 1963 _____48 1924 (69) ___ 3.26 2008 __ 3.54 2008 __ 3.22 2011 (1d)

Sep 07 ___ 101 1881 ____ 79 1881 _______ 63 1877,88 _ 46 1888 ________ 2.07 1998 ___ 4.43 2011 (3.22 + 1.21) _ 3.26 2008** 

Sep 08 ___ 97 2015 ____ 76 2015 _______ 63 1918 _____52 1871 (65) ___ 4.86 1934 ___ 5.48 1934 __ 3.77 2004 (1d)

Sep 09 ___ 94 1915 ____ 77 1884 _______ 61 1880,83 _ 48 1883 ________ 0.86 1902 ___4.86 1934**

Sep 10 ___ 97 1931,83 _ 77 1884 _______ 62 1883 _____43 1883 ________ 1.80 2023 ___1.82 2023 __ (1.58 2015 _ 1d)

Sep 11 ___ 99 1931,83 _ 78 1983 _______ 61 1876,1914 _43 1917 (62) _____ 2.90 1954 ___3.46 2023 _ 3.30 1954 _ 2.57 1882 (1d)

Sep 12 ___ 94 1961 ____ 77 1895 _______ 62 1883 _____46 1917 _________ 2.35 1960 ___3.23 1882 (2.57+0.66) _ 2.66 1960 (2d)

Sep 13 ___ 94 1952 ____ 75 1890 _______ 59 1965 _____46 1963 (65) ___ 3.94 1944 ___5.58 1944 __ 3.37" 1889 2d (1.89+1.48)

Sep 14 ___ 93 1931 ____ 74 1947 _______ 60 1873 _____46 1911, 75 _____ 3.82 1944 ___7.76 1944 _ 3.10 1945 (1d) ^

Sep 15 ___ 92 1927 ____ 75 1931,2005 _ 57 1954 _____44 1873 (65) ____ 4.16 1933 ___7.00 1933 (2.84+4.16)

Sep 16 ___ 93 1915 ____ 73 1903,2005 _ 60 1872 _____47 1966 (70) ____ 5.02 1999 ___5.44 1999 __ 4.38 1933 (2d)

Sep 17 ___ 93 1991 ____ 77 1991 _______ 57 1945 _____45 1986 (69) _____ 3.37 1876 ___4.14 1874 __ 3.28 1874 (1d)

Sep 18 ___ 91 1891 ____ 72 1905, 72 ___ 60 1875 _____44 1990 (61 17th) _ 3.92 1936 ___6.23 1874 (3.28+2.95) (7.09" 3d)

Sep 19 ___ 94 1983 ____ 74 1906 _______ 51 1875^____ 44 1929 (62) ____ 4.30 1894 ___5.16 1894 __ 3.95 1936 (2d)

Sep 20 ___ 93 1895, 1983_77 1906 _______ 59 1901 _____44 1993 (62 21st)_ 2.32 1989 ___4.21 1989 (1.89 + 2.32)

Sep 21 ___ 95 1895 ____ 77 1895 _______ 56 1871 _____40 1871 ___________ 5.54 1966 ___ 5.74 1938 __ 4.05 1938 (1d)^

Sep 22 ___ 95 1895,1914_75 1895 _______ 55 1875,1904_41 1904 __________ 2.34 1882 ___ 5.64 1966 __ 3.55 1882 (2d)

Sep 23 ___ 97 1895 ____ 77 1970 _______ 57 1963 _____41 1947 (60) _____ 8.28 1882 ___10.62 1882 __ 2.72 1919 (1d)

Sep 24 ___ 91 2017 ____ 74 1970 _______ 52 1887 _____40 1963 (62) _____ 2.26 1975 ___ 8.30 1882 __ 4.56 1975 (2d)

Sep 25 ___ 90 1970 ____ 71 1881,1970 __ 53 1879 _____40 1887 (63 26th) _ 2.36 1940 ___3.31 1975 __ 7.43" 4d total 23-26 1975

Sep 26 ___ 91 1881, 1970_74 1895 _______ 54 2000 _____42 1940 __________2.34 2008 ___ 2.87 1975 __ 2.35" 1991 (1.97+0.38)

Sep 27 ___ 90 1933 ____ 75 1881 _______ 56 1893 _____41 1947, 57 _______ 3.13 1985 ___ 3.58 1985

Sep 28 ___ 88 1881 ____ 72 1891 _______ 53 1984 _____41 1947(61 27th) _ 3.84 2004 ___ 3.84 2004 *

Sep 29 ___ 88 1945 ____ 72 1959,2015 _ 53 1888 _____42 1888,1914,42 _ 5.48 2023 ^___ 5.84 2023 _

Sep 30 ___ 89 1986 ____ 70 1959 _______52 1888 _____39 1912 (60) _____ 2.64 1983 ___ 2.64 1983 * __ 2.21 1920 (1d)

-- - - - - - - - - - - - - --

NOTES in calendar above

^ 1st high min shared 1898, 1980, 2010, 2015

^ 2nd, 3rd 1953 min 77, 77. also 75 on 3rd, 1973.

^ 2nd __ note also 3.00" 2-3 for 1899

^ 3rd 2d rain 1969 3.45" (0.11 + 3.32) .01" less than 1974 2d.

^ 1st-7th hot in 1898: 93, 93, 93, 92, 90, 88, 88 (no records though, set or shared high min 1st-5th) 

^ 5th high min shared 1898, 1907, 1985, 2018

^ 14th 2d rain 1971 4.34 (0.58 + 3.76) ... 3d 12th-14th 6.10"

^ 19th min with record low max was 45 (one higher than daily low min)

^ 20-21 the 2d rainfall total occurred with stalled fronts associated with the "Long Island Express" hurricane, with rain on 19th added the three day total was 7.50" and a further 0.63" fell on 17th-18th. The heavier rainfall on 21st 1966 pushed the daily max of 4.05" out of the record column. The 1966 rainfall was not of tropical storm origins. The 2d total for 20-21 was 5.56" (only 0.02" added from 20th) which did not quite exceed the 2d total for 1938. 

^ 28-29 4.68 2004 (3.84+0.82) and 28-29 another heavy 2d rainfall was 3.04" in 1907 (0.91+2.13). 

^ 29 record rainfall before 2023 was 2.18" 1963

Many of the heavy rainfalls noted in August and September were associated with hurricanes or tropical storms moving up the east coast.

The event on Sept 22-23 was a weak tropical storm (4 of 1882) (weak in terms of wind gradient) that dissipated near NYC on 23-24 Sept 1882. The event in mid-Sept of 1944 was the "Great Atlantic hurricane" which made landfall in eastern Long Island on the evening of Sept 14, 1944. The heavy rains of mid-Sept 1933 were associated with a stalled front and Hurricane 12 of that very active year (the "Outer Banks Hurricane") which passed southeast of the region on the 16th-17th. Records for 26-27 were set by Gloria (1985) which made landfall near Babylon NY just east of NYC.

[psv88]

75 today

[psv88]

Down to 55 already 

[MJO812]

63 here

Beautiful 

[SACRUS]

 

50 / 49 off a low of 49.   Mid 70s to near or at 80 today dry and mainly clear.  Repeat Thu, perhaps a touch warmer and bit more humid Friday with more clouds.   Trough comes through this weekend with rain on Saturday - perhaps salvaging Sunday from rain, not sure on the clouds.  Overall continued cooler than normal with what looks like a touch warmer replica of this week, next, mainly dry, sunny.   Warmer look towards/beyond mid month.

 

[wdrag]

Minor good news (from my perspective) regarding the NAM:  Due to the fact warm season mesoscale modeling is not showing major rapid improvements in potential qpf, the NAM retirement may be delayed due to the lack of an adequate replacement.