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May 2017 Observations & Discussions Thread


bluewave

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1 minute ago, Brian5671 said:

The big rains are in and out...if you count the clouds and light showers after, then yes I agree.   Today's Euro will be telling-will confirm if last night's 0z was a wet fluke.

I'm just saying, in out can be misleading. Thanks for clarifying.

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May stats for NYC...the long term average May temperature is close to 62.0...1870-2016...it's has not been that cool since 2008...we have not seen a May day 95 degrees or higher since 1996...we have not seen a May day with a minimum below 40 since 1978...

Average Temperature and precipitation...

decade....temp...high...low.....max/min temp ave/max/min/90+days/ ave precipitation...

1870's....60.3...63.3...58.8.......................................................2.......2.50"

1880's....61.3...67.9...56.6......96......35......87.2......40.9.........6.......3.07"

1890's....60.8...67.0...57.8......96......32......85.7......41.6.........6.......3.67"

1900's....60.7...63.4...56.2......90......37......86.6......41.5.........2.......3.41"

1910's....61.5...65.3...54.3......95......36......86.8......41.7.........4.......3.39"

1920's....60.2...64.6...57.3......93......37......84.2......41.5.........2.......3.59"

1930's....63.0...64.9...59.9......96......40......90.5......43.5.......19.......3.23"

1940's....62.5...67.0...59.2......96......35......88.8......42.7.........8.......4.52" trace of snow in 1946

1950's....61.9...66.4...58.7......94......38......87.2......41.7.........6.......3.29"

1960's....62.2...66.4...55.2......99......36......88.3......41.6.......11.......3.02"

1970's....62.7...65.8...59.5......94......36......89.0......41.1.......10.......5.00" trace of snow in 1977

1980's....63.6...66.0...60.2......97......41......88.0......43.7.......10.......4.39"

1990's....62.7...68.7...59.4......96......40......89.4......44.0.......11.......4.16"

2000's....62.2...65.2...58.7......93......41......86.2......43.4.........8.......3.66"

2010's....64.7...68.5...62.8......92......41......89.4......45.4.........5.......4.50"

1870-

2009......61.8...65.9...58.0..........................87.5......42.2.........8.......3.64"

1980-

2009..... 62.8...66.6...59.4..........................87.9......43.7.......10.......4.07"

warmest.........coolest...........wettest............driest......

68.7 in 1991...54.3 in 1917...10.24" in 1989...0.30" in 1903

68.5 in 2015...55.2 in 1967.....9.74" in 1984...0.34" in 1887

67.9 in 1880...55.2 in 1907.....9.15" in 1978...0.57" in 1964

67.0 in 1896...56.6 in 1882.....9.10" in 1990...0.62" in 1880

67.0 in 1944...57.3 in 1924.....8.51" in 1908...0.72" in 1905

66.4 in 1959...57.4 in 1901.....8.39" in 1972...0.89" in 1939

66.4 in 1965...57.7 in 1869.....8.00" in 2013...0.95" in 1877

66.0 in 1986...57.8 in 1891.....7.61" in 1940...1.05" in 1935

65.8 in 1975...58.0 in 1888.....7.58" in 1948...1.09" in 1899

65.7 in 1993...58.2 in 1893.....7.06" in 1968...1.18" in 1944

warmest temperatures...

99 5/19/1962

97 5/29/1969

97 5/30/1987

96 5/20/1996

96 5/22/1941

96 5/27/1880

96 5/29/1987

96 5/31/1895

95 5/25/1880

95 5/26/1880

95 5/27/1914

coldest temperatures...

32 5/06/1891

34 5/05/1891

35 5/01/1880

35 5/09/1947

36 5/11/1913

36 5/10/1966

36 5/10/1947

36 5/09/1977

36 5/03/1874

36 5/01/1876

coldest max days...

43 5/3/1873

43 5/5/1891

44 5/7/1967

44 5/5/1917

44 5/9/1977

45 5/1/1917

45 5/2/1962

45 5/5/1978

45 5/6/1891

46 5/25/1967+

warmest min. days...

76 5/31/1987

75 5/31/1895

75 5/31/2013

74 5/09/2000

74 5/20/1996

74 5/27/1908

74 5/29/1969

74 5/30/1987

73 5/25/1880

73 5/27/2016

73 5/28/1959

73 5/30/1986+

Warmest monthly minimum...

49 in 2012

49 in 1982

49 in 2014

48 in 1899

48 in 2015

48 in 1910

47 in 1942

47 in 1944

47 in 1969

47 in 1991

46 in 2011

46 in 2000

46 in 1999 + =and other years...

coldest monthly maximum...

75 in 1924

79 in 2005

79 in 2003

79 in 1983

79 in 1928

79 in 1927

79 in 1915

80 in 1968

80 in 1882

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1 hour ago, winterwx21 said:

Do you guys think we could see a rare May frost early next week? I always plant the tomatoes during the first few days of May, but I'm a little hesitant to do that right now because of how chilly it looks early next week. Right now to me it looks as if it could drop to about 40 monday night which would be ok, but it would only have to trend a little colder to get to frost level. I'm wondering if I should plant late this year to be safe. 

I usually try and plant first weekend of May if possible too. Wasn't able to last year and I'm not doing it this year either.  Putting the plants in early just have them sit in raw rainy/cool weather doesn't gain you anything. They respond to the weather and can respond quick once it turns nice. I'll wait until we get closer to the weekend of the 13/14 and see what it looks like at that time. 

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3 minutes ago, Brian5671 said:

Global model won't see the narrow band...have to go to the NAM for that 24 hrs and out

Yeah I wouldn't worry that much about QPF. An absolute beast of a LLJ strengthens overhead, almost perfect placement. It's going to be a firehose of heavy convection. 

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1 minute ago, Morris said:

Euro cut back for the entire area, but is still over 2 inches for the metro.

It's depiction of the convection was just a bit less robust, but it's really impossible to figure out at this range. I started a storm specific thread since we're three days out now.

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