Jump to content
  • Member Statistics

    17,608
    Total Members
    7,904
    Most Online
    Vesuvius
    Newest Member
    Vesuvius
    Joined

December 2018 General Discussion & Observations


Zelocita Weather

Recommended Posts

  • Replies 1.8k
  • Created
  • Last Reply

The latest guidance has increased forecast precipitation amounts for the New York City area tomorrow afternoon and tomorrow night. As a result, it is now likely that New York City's Central Park will receive sufficient precipitation to surpass 1989 for 4th wettest year on record.

Based on sensitivity analysis applied to the latest guidance (through the 0z GFS), the implied probabilities for precipitation amounts for New York City are:

Measurable: > 99.9%
0.25" or more: 99%
0.50" or more: 86%
0.75" or more: 47%
1.00" or more: 11%

0.59" (needed to surpass 1989's yearly precipitation): 75%

The following are year-to-date and annual precipitation rankings for select locations:

Precipitation12302018.jpg

It is also very likely that Pittsburgh will receive at least the 0.34" rain needed to surpass the 57.41" precipitation recorded in 2004 to enable 2018 to become that city's wettest year on record.

Around the region, among the following locations have set new annual precipitation records this year:

Atlantic City: 67.90"
Boonton (1 SE), NJ: 76.58"
Elmira, NY: 57.62"
Hamburg, PA: 75.92"
Reading: 67.19"
Scranton: 60.49"
Shirley, NY: 61.25"
Shrub Oak, NY: 66.01"
Upton, NY: 70.71"

Link to comment
Share on other sites

21 hours ago, sussexcountyobs said:

Snow is falling here currently.  Even the street is white. 

It fell here in the Poconos too.  I decided to get away from the coastal futility for a bit lol.  We were down to quarter mile visibility here.  There is something comforting with the regular snows you get up here even in bad patterns for snow compared to the coast, even if coastal storms are bigger, there is something much more zen and relaxing about mountain snows.

Link to comment
Share on other sites

19 hours ago, bluewave said:

We were even able to avoid a shut out with the 50 degree December 2015. Luckily, we only had one goose egg this decade in December 2011.

2018 T 2
2017 7.7 0
2016 3.2 0
2015 T 0
2014 1.0 0
2013 8.6 0
2012 0.4 0
2011 0.0 0
2010 20.1 0
2009 12.4 0

Chris, did our local area airports (JFK,LGA) all manage to record a trace of snow today? We had a bit of accumulation in the Poconos- around half an inch where I was around 2,000 ft.

Link to comment
Share on other sites

Last day of Dec. averaging 44degs., or about 9degs. AN.

Month to date is +2.4[40.1].    Dec. should end at +2.6[40.2].

The first week of Jan. averaging 43degs., or about 10degs. AN.    The remaining 24 days better  be -2.9,  just to get back to Normal.

EURO is 11" of Snow for the next 10 days(storm on the 9th).     GEFS is 35% chance of 4" by mid-month.    CFS really has about 10 cold days in Jan.

                  H  A   P   P   Y      2019  !!!

Link to comment
Share on other sites

Continuation of our mild December pattern during the 2010’s winters.

Dec through Mar NYC temperature departures during the 2010’s

 Year.......Dec...Jan...Feb...Mar

09-10....-1.6...-0.1...-2.2....+5.7

10-11....-4.7...-2.9...+0.7...-0.2

11-12...+5.8...+4.7..+5.6....+8.4

12-13...+4.0...+2.5...-1.4....-2.4

13-14...+1.0...-4.0....-3.7....-4.8

14-15..+3.0....-2.7...-11.4...-4.4

15-16..+13.3..+1.9...+2.4...+6.4

 16-17...+0.8...+5.4....+6.3...-3.3

17-18...-2.5.....-0.9.....+6.7..-2.4

18-19...+2.4

 

Dec.....7+......3-

Jan.....4+.....5-

Feb.....5+.....4-

 Mar....3+.....6-

Link to comment
Share on other sites

December 2018 ended with a mean temperature of 40.1° in New York City. That was 2.6° above normal.

Like December 1965 (which had a mean temperature of 40.5° in New York City), December 2018 featured a positive SOI average during an El Niño event. The preliminary December 2018 AO average was +0.129. In December 1965, the AO averaged +0.163.

During January 1966, a dramatic pattern change took place as the SOI became persistently negative and strong Atlantic blocking developed. A blizzard occurred near the end of the month.

As the MJO very likely moves into Phase 6 in the next two days and then Phase 7 afterward (probably after the first week in January), the pattern should start evolving toward a wintry one. Before then, the first 7-10 days should be warmer than normal with little or no snowfall in New York City.

January 1966 also started off warm. The first week had a mean temperature of 44.9°. Based on sensitivity analysis applied to the latest guidance, there is an implied 92% probability that the January 1-7 period will be warmer than normal in New York City and an implied 64% probability that the mean temperature will average 40.0° or above.

Finally, as of 11:51 pm, precipitation during 2018 was 65.52" in New York City and 59.45" at Newark. That ranked as the 4th highest yearly figure on record in New York City and the 3rd highest amount on record in Newark. Rain was continuing to fall at both locations. Today's rainfall resulted in new annual precipitation records being established in Columbus, OH; Louisville; Pittsburgh; and, Wilmington, DE. It is also possible that New Brunswick, NJ set a new annual precipitation record but the final data is not yet in there.

Happy New Year to all.

Link to comment
Share on other sites

  • 3 weeks later...

Archived

This topic is now archived and is closed to further replies.

  • Recently Browsing   0 members

    • No registered users viewing this page.

×
×
  • Create New...