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Nina's strength


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The following years are nina winters or almost nina winters ( marked with an * )

The seasonal snowfall and largest snowfall.

Season...Oct...Nov...Dec....Jan...Feb...Mar...Apr...Total...Big Snow...index. ( lowest three month index from NDJ-FMA.)mei index from Nov/Dec-Feb/Mar...

1973-74...0......0.......2.8....7.8...9.4...3.2....0.3....23.5........6.0........-2.0.....-1.906

1988-89...0......0.......0.3....5.0...0.3...2.5......T.......8.1........5.0........-1.9.....-1.319

1975-76...0......T.......2.3....5.6...5.0...4.4......T.....17.3........4.2........-1.8.....-1.747

1955-56...0.....1.0.....3.3....1.2...2.7..21.1...4.2.....33.5......11.6........-1.7.....-1.429

1998-99...0......0.......2.0....4.5...1.7...4.5......0.....12.7........4.5........-1.6.....-1.113

1999-00...0......0.........T.....9.5...5.2...0.4....1.2....16.3........5.5........-1.6.....-1.205

1970-71...0......0.......2.4...11.4...T.....1.3....0.4....15.5........6.4........-1.4.....-1.795

2007-08...0......T.......2.9....T.....9.0.....T.......0.....11.9........6.0........-1.4.....-1.529

1984-85...0......T.......5.5....8.4..10.0..0.2......T.....24.1........5.7........-1.1.....-0.706

1950-51...0......T.......3.8....3.2...1.9...2.7......0.....11.6........2.9........-1.0.....-1.285

1954-55...0......T.......0.1....2.6...5.2...3.6......0.....11.5........3.9........-1.0.....-1.151

1964-65...0......0.......3.1...14.8..2.5...2.8....1.2....24.4.........6.3.......-1.0.....-0.938

1967-68...0.....3.2.....5.5....3.6...1.1...6.1......0.....19.5.........6.6.......-0.9.....-0.734

1971-72...0......T.........T.....2.8..17.8..2.3......T.....22.9.........5.7.......-0.9.....-1.012

1956-57...0......T.......0.9....8.9...7.0...2.6....2.5....21.9.........6.4.......-0.8.....-1.044

1983-84...0......T.......1.6...11.7..0.2..11.9.....0.....25.4.........6.9........-0.8.....-0.549

1995-96...0.....2.2....11.5..26.1..21.2.13.2...0.7....75.6........20.2.......-0.8.....-0.605

2008-09...0.....T........6.0.....9.0...4.3...8.3.....T.....27.6........8.3........-0.8.....-0.716

1974-75...0.....0.1......0.1....2.0..10.6..0.3.....T.....13.1.........7.8........-0.7.....-0.934

2000-01...T......0......13.4....8.3...9.5...3.8.....0.....35.0........12.0.......-0.7.....-0.667

1961-62*.0......T.......7.7....0.6...9.6...0.2......T.....18.1..........6.2......-0.5.....-1.062

2005-06*.0......0.......9.7....2.0..26.9...1.3....0.1....40.0.......26.9.......-0.8.....-0.594

1966-67*.0......0.......9.1....1.4..23.6..17.4.....T.....51.5.......12.5.......-0.6.....-1.063

1980-81*.0......T.......2.8....8.0....T......8.6......0.....19.4.........8.6.......-0.4.....-0.251

1959-60*.0.....0.5....15.8...2.5...1.9...18.5......0.....39.2......14.5........-0.3.....-0.435

* almost nina years...

The weaker the nina, the better chance of seeing a KU storm. If the index is below -0.9 for any three month period the chances are lower for a KU storm.

Only three official nina winters out of twenty had a storm 8" or more. The four of five almost nina years had a storm 8" or more.

When the index was -0.8 or higher NYC saw two of six years with KU storms. Not including the almost nina years.

Only three of the 20 nina winters had above average snowfall...One year was near average and the other 16 were below average...

Precipitation for nina winters...

Precipitation for La Nina winters at Central Park

monthly precipitation, total precipitation. Total snowfall, Biggest snowfall.

season........Dec.....Jan......Feb......Mar........Total........Snow.....Big snow

........................................................................................

1942-43......4.57"...2.46"...1.87"...3.68"......12.58"......29.5"...8.4"

1945-46......4.56"...1.86"...1.76"...3.21"......11.39"......31.4"...8.3"

1949-50......2.30"...2.26"...4.44"...2.73"......11.73"......13.8"...3.8"

1950-51......4.32"...3.95"...3.05"...5.62"......16.94"......11.6"...3.0"**

1954-55......3.03"...0.77"...3.01"...3.71"......10.52"......11.5"...3.9"

1955-56......0.25"...1.54"...4.18"...5.03"......11.00"......33.5".13.5"

1956-57......3.29"...1.70"...2.43"...1.99"......10.41"......21.9"...6.4"

1961-62......3.04"...2.62"...3.74"...2.97"......12.37"......18.1"...6.2"

1964-65......4.16"...3.09"...3.66"...2.49"......13.40"......24.4"...6.3"

1967-68......6.08"...2.04"...1.13"...4.79"......14.04"......19.5"...6.6"

1970-71......2.82"...0.66"...4.52"...4.18"......12.18"......15.5"...6.4"

1971-72......1.76"...2.41"...5.90"...4.55"......14.62"......22.9"...5.7"

1973-74......9.98"...3.80"...1.49"...5.76"......21.03"......23.5"...6.0"**

1974-75......6.33"...4.76"...3.33"...3.32"......17.24"......13.1"...7.8"**

1975-76......3.63"...5.78"...3.13"...2.99"......15.53"......17.3"...4.2"

1983-84......9.77"...1.87"...4.86"...6.30"......22.80"......25.4"...6.9"**

1984-85......3.26"...1.00"...2.41"...1.91"........8.58"......24.1"...5.7"

1988-89......1.13"...2.29"...3.03"...4.93"......11.38"........8.1"...5.0"

1995-96......2.12"...5.64"...2.59"...3.81"......14.16"......75.6".20.2"

1998-99......1.12"...6.99"...3.49"...4.01"......15.61"......12.7"...4.5"

1999-00......3.20"...3.24"...1.66"...3.31"......11.41"......16.3"...5.5"

2000-01......3.19"...3.16"...1.95"...7.72"......16.02"......35.0".12.0"**

2007-08......5.22"...2.85"...5.95"...4.08"......18.10"......11.9"...6.0"**

2008-09......6.62"...2.98"...0.93"...1.75"......12.28"......27.6"...8.3"

24 yr ave....3.99"...2.91"...3.10"...3.95"......13.95"......22.8"...7.1"

.............................................................

normal........3.95"...4.13"...3.15"...4.37"......15.60"......22.4"...8.0"est.

only six years out of 24 were above average for total precipitation for the four month period. Many of these years had at least one dry month. Most of the years had below normal snowfall and only three years had a snowstorm 10" or more. 1973 and 1983 had the most precipitation but both years had a record or near record wet month of December. Both years did have a dry month also which were also their coldest months of the winter.

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The following years are nina winters or almost nina winters ( marked with an * )

The seasonal snowfall and largest snowfall.

Season...Oct...Nov...Dec....Jan...Feb...Mar...Apr...Total...Big Snow...index. ( lowest three month index from NDJ-FMA.)mei index from Nov/Dec-Feb/Mar...

1967-68...0.....3.2.....5.5....3.6...1.1...6.1......0.....19.5.........6.6.......-0.9.....-0.734

I know your historical knowlege and research skills are excellent, but how could 1967-8's figures be right? The "big snow" exceeds the snowfall for any month during that winter. Unless of couse the storm happened to be spanning February 29 to March 1. Is that what happened? From what I can tell from the records that's unlikely.

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I know your historical knowlege and research skills are excellent, but how could 1967-8's figures be right? The "big snow" exceeds the snowfall for any month during that winter. Unless of couse the storm happened to be spanning February 29 to March 1. Is that what happened? From what I can tell from the records that's unlikely.

Could also be a New Year's eve - New Year's day event.

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I know your historical knowlege and research skills are excellent, but how could 1967-8's figures be right? The "big snow" exceeds the snowfall for any month during that winter. Unless of couse the storm happened to be spanning February 29 to March 1. Is that what happened? From what I can tell from the records that's unlikely.

Feb. 29th to March 1st...1.1" on Feb. 29th and 5.5" March 1st...

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Feb. 29th to March 1st...1.1" on Feb. 29th  and 5.5" March 1st...

Just think if it wasnt for the silly little leap day, it would have been an all March event.....

I know that your reasoning is that Feb and Mar will both be above normal, but arent cold and snowy Marches more likely in a la nina?

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Just think if it wasnt for the silly little leap day, it would have been an all March event.....

I know that your reasoning is that Feb and Mar will both be above normal, but arent cold and snowy Marches more likely in a la nina?

actually I thought February would be the best month for snow and cold like 1972, 1974 and 1975...I could be wrong but we will see...

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