bluewave

We finally got the Southern Stream to become active over the last 7 days. So it delivered our first KU Benchmark storm since 2022 with widespread 10”+ amounts across the Northeast. The benchmark track which is a prerequisite allowed several stations to finally have a 25” season before we even reached February. But since the Western ridge has been so overpowering this winter, the big storm last weekend occurred with a deep trough out West and a transient Southeast ridge. So we needed a relaxation of the ridge for our big storm. One of the December clippers also occurred with a trough out West and a transient Southeast ridge. But that event was Northern Stream dominant so there weren’t widespread 10”+ amounts since the Atlantic and Gulf moisture couldn’t get tapped. The ridge and trough axis was too far east today for the big ocean storm to come closer to the coast. So the Western ridge was just a little too overpowering this weekend. Same theme for much of the winter outside one of our December clippers and the big storm last weekend. The other thing is that getting two 10” events only 7 days apart has only happened once in our area since the 1990s. This was the rare twin 10”+ snowstorms only a few days apart in February 1994. Even during the phenomenal 2010-2018 snowfall run we needed at least several weeks to reload the 10”+ snowfall pattern. The best run from this period was the 60”+ in 33 days from December 2010 into January 2011. But the storms were spaced out at longer than 7 day intervals. Overpowering Western ridge relaxed for the clipper and benchmark storms Late January benchmark track Ridge and trough axis today just a little too far east

Here is another example of how in the past we often had coast to coast cold at durations lasting a month to occasionally the entire DJF winter season. December 2025 was the 39th coldest in the Northeast and the same average temperature of 24.2° as 2017 was. But this is the first time an average Northeast December temperature in this range occurred with all-time warmth in the West near +15° above the long term averages. Back in 2017 we did have some warmth in the Southwest but nothing as extreme as this December was. The other years with that were within about 0.6°which the Northeast was this December had the cold extending to the West Coast. So we can see the warmth expanding out of the Southwest over time and increasing in coverage and magnitude.

That is just one example. The total amount across many locations and timeframes is too vast for me to list in one thread. But I have plenty of more examples for other individual locations and time periods.

This January was much warmer in the Arctic and the CONUS than 1977.

2019 was the warmest January at Rockford, IL to feature a -25° or colder reading with the big temperature swings that month and a high over 50°. Climatological Data for Rockford Area, IL (ThreadEx) - January 2019 Click column heading to sort ascending, click again to sort descending. Sum 788 333 - - 1449 0 2.27 24.9 - Average 25.4 10.7 18.1 -3.7 - - - - 5.9 Normal 29.1 14.5 21.8 - 2019-01-01 32 23 27.5 4.2 37 0 T T 0 2019-01-02 28 22 25.0 1.9 40 0 T T 0 2019-01-03 39 20 29.5 6.5 35 0 0.00 0.0 0 2019-01-04 46 26 36.0 13.2 29 0 0.00 0.0 0 2019-01-05 50 26 38.0 15.3 27 0 0.00 0.0 0 2019-01-06 40 26 33.0 10.5 32 0 T 0.0 0 2019-01-07 51 37 44.0 21.6 21 0 0.53 0.0 0 2019-01-08 44 21 32.5 10.3 32 0 0.00 0.0 0 2019-01-09 23 16 19.5 -2.6 45 0 T T 0 2019-01-10 27 14 20.5 -1.5 44 0 0.00 0.0 0 2019-01-11 29 17 23.0 1.2 42 0 0.00 0.0 0 2019-01-12 31 29 30.0 8.3 35 0 0.28 3.8 0 2019-01-13 32 26 29.0 7.4 36 0 0.01 0.2 4 2019-01-14 26 23 24.5 3.0 40 0 0.00 0.0 4 2019-01-15 33 24 28.5 7.0 36 0 T T 4 2019-01-16 34 26 30.0 8.6 35 0 T 0.0 3 2019-01-17 33 27 30.0 8.7 35 0 T T 3 2019-01-18 30 23 26.5 5.2 38 0 0.17 2.3 2 2019-01-19 24 6 15.0 -6.2 50 0 0.13 4.0 8 2019-01-20 10 -2 4.0 -17.2 61 0 0.00 0.0 8 2019-01-21 14 -7 3.5 -17.7 61 0 0.00 0.0 8 2019-01-22 31 13 22.0 0.8 43 0 0.24 1.5 7 2019-01-23 29 9 19.0 -2.2 46 0 0.23 4.2 11 2019-01-24 22 -2 10.0 -11.2 55 0 T 0.2 13 2019-01-25 1 -11 -5.0 -26.3 70 0 0.05 0.6 12 2019-01-26 5 -21 -8.0 -29.3 73 0 0.07 1.5 14 2019-01-27 8 -15 -3.5 -24.9 68 0 0.10 1.3 14 2019-01-28 21 9 15.0 -6.5 50 0 0.38 4.0 17 2019-01-29 10 -16 -3.0 -24.6 68 0 T 0.2 17 2019-01-30 -13 -25 -19.0 -40.7 84 0 0.00 0.0 17 2019-01-31 -2 -31 -16.5 -38.3 81 0 0.08 1.1 16 Climatological Data for Rockford Area, IL (ThreadEx) - January 1982 Click column heading to sort ascending, click again to sort descending. Sum 594 -47 - - 1735 0 1.58 14.8 - Average 19.2 -1.5 8.8 -13.0 - - - - 6.0 Normal 29.1 14.5 21.8 - 1982-01-01 18 3 10.5 -12.8 54 0 0.00 0.0 3 1982-01-02 34 15 24.5 1.4 40 0 0.28 1.9 3 1982-01-03 34 20 27.0 4.0 38 0 0.18 0.3 4 1982-01-04 33 9 21.0 -1.8 44 0 0.16 1.3 4 1982-01-05 31 6 18.5 -4.2 46 0 0.00 0.0 4 1982-01-06 23 5 14.0 -8.5 51 0 0.08 1.1 4 1982-01-07 5 -10 -2.5 -24.9 67 0 0.00 0.0 5 1982-01-08 15 -10 2.5 -19.7 62 0 0.02 0.3 5 1982-01-09 5 -21 -8.0 -30.1 73 0 0.04 0.4 5 1982-01-10 -5 -27 -16.0 -38.0 81 0 0.00 0.0 5 1982-01-11 3 -6 -1.5 -23.3 66 0 0.00 0.0 5 1982-01-12 10 -8 1.0 -20.7 64 0 0.11 1.1 5 1982-01-13 16 -3 6.5 -15.1 58 0 0.07 0.9 6 1982-01-14 7 -15 -4.0 -25.5 69 0 0.00 0.1 6 1982-01-15 12 -18 -3.0 -24.5 68 0 0.04 0.6 6 1982-01-16 6 -24 -9.0 -30.4 74 0 0.00 0.0 6 1982-01-17 2 -25 -11.5 -32.8 76 0 0.11 2.1 6 1982-01-18 22 0 11.0 -10.3 54 0 0.00 0.0 8 1982-01-19 27 5 16.0 -5.2 49 0 0.00 0.0 7 1982-01-20 28 7 17.5 -3.7 47 0 0.09 0.7 7 1982-01-21 27 23 25.0 3.8 40 0 0.00 0.0 8 1982-01-22 37 18 27.5 6.3 37 0 0.16 0.3 7 1982-01-23 37 -1 18.0 -3.2 47 0 0.00 0.0 7 1982-01-24 -1 -9 -5.0 -26.2 70 0 0.02 0.3 7 1982-01-25 7 -9 -1.0 -22.3 66 0 0.08 2.1 9 1982-01-26 9 -18 -4.5 -25.8 69 0 0.00 0.0 9 1982-01-27 35 8 21.5 0.1 43 0 0.00 0.0 9 1982-01-28 34 6 20.0 -1.5 45 0 0.00 0.0 7 1982-01-29 32 6 19.0 -2.6 46 0 0.13 1.1 6 1982-01-30 31 18 24.5 2.8 40 0 0.00 0.0 7 1982-01-31 20 8 14.0 -7.8 51 0 0.01 0.2 6 Climatological Data for Rockford Area, IL (ThreadEx) - January 1985 Click column heading to sort ascending, click again to sort descending. Sum 712 87 - - 1607 0 1.00 13.4 - Average 23.0 2.8 12.9 -8.9 - - - - 8.6 Normal 29.1 14.5 21.8 - 1985-01-01 31 2 16.5 -6.8 48 0 0.34 3.9 9 1985-01-02 10 -8 1.0 -22.1 64 0 0.00 0.0 9 1985-01-03 19 -14 2.5 -20.5 62 0 0.00 0.0 9 1985-01-04 32 -8 12.0 -10.8 53 0 0.00 0.0 9 1985-01-05 39 24 31.5 8.8 33 0 0.00 0.0 8 1985-01-06 37 24 30.5 8.0 34 0 0.00 0.0 7 1985-01-07 37 28 32.5 10.1 32 0 T T 7 1985-01-08 28 8 18.0 -4.2 47 0 T T 7 1985-01-09 22 8 15.0 -7.1 50 0 0.01 0.1 7 1985-01-10 24 15 19.5 -2.5 45 0 0.11 1.7 8 1985-01-11 20 4 12.0 -9.8 53 0 T T 8 1985-01-12 14 0 7.0 -14.7 58 0 0.00 0.0 8 1985-01-13 28 9 18.5 -3.1 46 0 0.00 0.0 8 1985-01-14 35 4 19.5 -2.0 45 0 0.01 0.3 8 1985-01-15 15 -8 3.5 -18.0 61 0 0.00 0.0 8 1985-01-16 22 11 16.5 -4.9 48 0 0.15 2.2 8 1985-01-17 22 11 16.5 -4.8 48 0 0.14 1.9 10 1985-01-18 25 6 15.5 -5.8 49 0 0.02 0.4 11 1985-01-19 6 -24 -9.0 -30.2 74 0 T T 11 1985-01-20 -5 -26 -15.5 -36.7 80 0 T T 11 1985-01-21 17 -6 5.5 -15.7 59 0 T T 11 1985-01-22 22 12 17.0 -4.2 48 0 T T 10 1985-01-23 27 15 21.0 -0.2 44 0 T T 8 1985-01-24 30 21 25.5 4.3 39 0 0.06 0.9 8 1985-01-25 29 -5 12.0 -9.3 53 0 0.01 0.2 9 1985-01-26 22 -10 6.0 -15.3 59 0 0.00 0.0 9 1985-01-27 30 8 19.0 -2.4 46 0 0.00 0.0 8 1985-01-28 15 -5 5.0 -16.5 60 0 0.00 0.0 8 1985-01-29 22 -6 8.0 -13.6 57 0 0.01 0.2 8 1985-01-30 28 9 18.5 -3.2 46 0 0.14 1.5 7 1985-01-31 9 -12 -1.5 -23.3 66 0 T 0.1 9 Climatological Data for Rockford Area, IL (ThreadEx) - January 2009 Click column heading to sort ascending, click again to sort descending. Sum 695 160 - - 1580 0 0.81 12.6 - Average 22.4 5.2 13.8 -8.0 - - - - 5.1 Normal 29.1 14.5 21.8 - 2009-01-01 31 16 23.5 0.2 41 0 0.00 0.0 1 2009-01-02 30 14 22.0 -1.1 43 0 0.00 0.0 T 2009-01-03 37 16 26.5 3.5 38 0 T 0.0 T 2009-01-04 37 14 25.5 2.7 39 0 0.26 0.0 T 2009-01-05 29 9 19.0 -3.7 46 0 0.00 0.0 T 2009-01-06 31 17 24.0 1.5 41 0 0.06 0.8 T 2009-01-07 28 12 20.0 -2.4 45 0 T 0.2 1 2009-01-08 23 9 16.0 -6.2 49 0 T T 1 2009-01-09 30 12 21.0 -1.1 44 0 0.24 2.7 3 2009-01-10 28 18 23.0 1.0 42 0 0.04 3.8 6 2009-01-11 19 8 13.5 -8.3 51 0 T T 7 2009-01-12 27 7 17.0 -4.7 48 0 0.05 1.7 7 2009-01-13 22 -5 8.5 -13.1 56 0 0.01 0.4 7 2009-01-14 9 -6 1.5 -20.0 63 0 0.12 1.9 8 2009-01-15 -6 -17 -11.5 -33.0 76 0 0.00 0.0 9 2009-01-16 0 -25 -12.5 -33.9 77 0 0.00 0.0 9 2009-01-17 27 0 13.5 -7.8 51 0 T T 8 2009-01-18 17 9 13.0 -8.3 52 0 T 0.1 8 2009-01-19 20 6 13.0 -8.2 52 0 0.02 0.4 8 2009-01-20 19 6 12.5 -8.7 52 0 0.00 0.0 7 2009-01-21 25 10 17.5 -3.7 47 0 0.00 0.0 7 2009-01-22 31 5 18.0 -3.2 47 0 0.00 0.0 7 2009-01-23 27 12 19.5 -1.7 45 0 0.00 0.0 6 2009-01-24 12 -5 3.5 -17.7 61 0 0.00 0.0 6 2009-01-25 11 -5 3.0 -18.3 62 0 0.00 0.0 6 2009-01-26 14 -4 5.0 -16.3 60 0 T T 6 2009-01-27 15 4 9.5 -11.9 55 0 0.01 0.2 6 2009-01-28 16 1 8.5 -13.0 56 0 T 0.3 6 2009-01-29 29 15 22.0 0.4 43 0 T 0.1 6 2009-01-30 16 0 8.0 -13.7 57 0 T T 6 2009-01-31 41 7 24.0 2.2 41 0 0.00 0.0 6 Climatological Data for Rockford Area, IL (ThreadEx) - January 1924 Click column heading to sort ascending, click again to sort descending. Sum 792 90 - - 1566 0 1.27 9.5 - Average 25.5 2.9 14.2 -7.6 - - - - 3.8 Normal 29.1 14.5 21.8 - 1924-01-01 19 -13 3.0 -20.3 62 0 0.00 0.0 5 1924-01-02 24 -4 10.0 -13.1 55 0 T T 5 1924-01-03 21 -6 7.5 -15.5 57 0 0.00 0.0 5 1924-01-04 12 -11 0.5 -22.3 64 0 T T 5 1924-01-05 -11 -25 -18.0 -40.7 83 0 0.00 0.0 5 1924-01-06 23 -19 2.0 -20.5 63 0 0.00 0.0 5 1924-01-07 32 7 19.5 -2.9 45 0 0.00 0.0 M 1924-01-08 44 13 28.5 6.3 36 0 0.00 0.0 M 1924-01-09 41 35 38.0 15.9 27 0 0.16 0.0 M 1924-01-10 38 23 30.5 8.5 34 0 0.41 0.0 M 1924-01-11 24 17 20.5 -1.3 44 0 T T M 1924-01-12 21 7 14.0 -7.7 51 0 T T M 1924-01-13 18 -10 4.0 -17.6 61 0 0.00 0.0 M 1924-01-14 25 9 17.0 -4.5 48 0 T T M 1924-01-15 35 20 27.5 6.0 37 0 0.00 0.0 T 1924-01-16 32 1 16.5 -4.9 48 0 0.68 9.5 M 1924-01-17 12 -15 -1.5 -22.8 66 0 0.00 0.0 M 1924-01-18 20 -8 6.0 -15.3 59 0 T T M 1924-01-19 20 0 10.0 -11.2 55 0 0.00 0.0 M 1924-01-20 6 -12 -3.0 -24.2 68 0 0.00 0.0 M 1924-01-21 2 -21 -9.5 -30.7 74 0 0.00 0.0 M 1924-01-22 36 -7 14.5 -6.7 50 0 0.00 0.0 M 1924-01-23 33 16 24.5 3.3 40 0 0.00 0.0 M 1924-01-24 36 11 23.5 2.3 41 0 0.02 T M 1924-01-25 35 -8 13.5 -7.8 51 0 0.00 0.0 M 1924-01-26 8 -8 0.0 -21.3 65 0 0.00 0.0 M 1924-01-27 25 -6 9.5 -11.9 55 0 0.00 0.0 M 1924-01-28 40 19 29.5 8.0 35 0 0.00 0.0 M 1924-01-29 39 33 36.0 14.4 29 0 0.00 0.0 M 1924-01-30 43 27 35.0 13.3 30 0 0.00 0.0 M 1924-01-31 39 25 32.0 10.2 33 0 T 0.0 T

The magnitude of the temperature swings are greater now than in the old days. In order for the CONUS to have a top 5 to top 10 coldest winter there needs to be extensive cold across a large portion of the CONUS which hasn’t happened since the 1970s. These days we can’t get significant Arctic outbreaks without some extreme Arctic warmth like we have been experiencing this winter. No spots in the CONUS this January will see as extreme a departure for the entire month as portions of the Arctic have.

I would say the pattern this winter fits perfectly with what one would expect from a warmer world. First, the extent of the cold this winter was limited compared to what we used to get from Arctic outbreaks across the Northern Hemisphere. The top 5 cold from late January into early February from the Central and Eastern CONUS will only be of a 10 to perhaps 15 day duration. In the old days we could have 60-90 day durations of top 5 cold like in the late 1970s in the CONUS. Plus the record early late November SSW at the time of the lowest Arctic sea ice extent for the late fall into early winter matches model studies which show a link with low Arctic sea ice when combined with a -QBO. Also notice the all-time record warmth out West this winter instead of coast to coast extended cold like we used to get. The presence of the warmth in proximity to the cold can lead to very large temperature swings in some locations.

That’s what makes this top 5 coldest pattern from January 24th through at least February 2nd for the Central and Eastern CONUS so impressive.

Maybe Walpack was closer to -40° in January 1994 with the great cold air drainage that location gets. Too bad they didn’t have readings there before 2004. It’s significantly colder there than Sussex, NJ with radiational cooling which we have a longer climate record for. Climatological Data for SUSSEX 1 NW, NJ - January 1994 Click column heading to sort ascending, click again to sort descending. Sum 862 86 - - 1263 0 4.34 39.0 - Average 28.7 3.2 16.2 -9.6 - - - - 9.0 Normal 34.9 16.7 25.8 - 1215 0 3.50 11.6 1994-01-01 27 M M M M M 0.00 0.0 1 1994-01-02 40 M M M M M T T T 1994-01-03 45 23 34.0 7.0 31 0 0.00 0.0 T 1994-01-04 25 20 22.5 -4.3 42 0 0.34 4.0 5 1994-01-05 26 18 22.0 -4.7 43 0 M 3.0 7 1994-01-06 32 12 22.0 -4.5 43 0 M 0.0 6 1994-01-07 15 11 13.0 -13.4 52 0 0.07 1.0 5 1994-01-08 15 10 12.5 -13.7 52 0 0.82 7.0 M 1994-01-09 30 7 18.5 -7.6 46 0 T T 8 1994-01-10 34 7 20.5 -5.5 44 0 0.00 0.0 7 1994-01-11 24 -1 11.5 -14.4 53 0 M M 7 1994-01-12 28 12 20.0 -5.8 45 0 0.00 0.0 6 1994-01-13 33 16 24.5 -1.2 40 0 0.39 6.0 10 1994-01-14 38 27 32.5 6.9 32 0 0.00 0.0 M 1994-01-15 35 3 19.0 -6.5 46 0 0.17 2.0 7 1994-01-16 M -8 M M M M T 0.0 6 1994-01-17 14 M M M M M 0.00 0.0 6 1994-01-18 31 4 17.5 -7.8 47 0 1.36 12.0 M 1994-01-19 31 -11 10.0 -15.3 55 0 0.00 0.0 M 1994-01-20 8 -16 -4.0 -29.3 69 0 0.00 0.0 17 1994-01-21 11 -29 -9.0 -34.2 74 0 0.00 0.0 17 1994-01-22 12 -28 -8.0 -33.2 73 0 0.00 0.0 17 1994-01-23 30 4 17.0 -8.2 48 0 0.00 0.0 16 1994-01-24 33 M M M M M 0.00 0.0 16 1994-01-25 47 30 38.5 13.3 26 0 0.00 0.0 16 1994-01-26 34 9 21.5 -3.8 43 0 0.31 4.0 12 1994-01-27 12 -15 -1.5 -26.8 66 0 0.12 M 13 1994-01-28 28 -15 6.5 -18.8 58 0 M M 11 1994-01-29 54 -28 13.0 -12.4 52 0 0.76 M M 1994-01-30 39 19 29.0 3.5 36 0 0.00 0.0 M 1994-01-31 31 5 18.0 -7.5 47 0 0.00 0.0 M https://www.njweather.org/station/79

A great drone video just got posted this morning.

It’s very rare for us to get 3 or more cold months in a row here as has been the case since November. The last time this happened was January to March 2015. Let’s hope we don’t see a rebound like 2015 into 2016 again.

If we had a strong northerly cold air drain down the Hudson Valley like in early February 2023, then NYC wouldn’t have had any trouble getting to 0 to 5°. NYC has always needed the winds to stay up for their coldest readings. The winds were too light to transport the cold into the heat island areas this morning.

My friend took a photo of the frozen Great South Bay yesterday just before landing.

A top 5 coldest January 24th to 30th across the area and much of the Central to Eastern CONUS. Time Series Summary for NY CITY CENTRAL PARK, NY Coldest January 24th to 30th Click column heading to sort ascending, click again to sort descending. 1 1935-01-30 15.0 0 2 1888-01-30 15.6 0 3 1936-01-30 15.9 0 4 2026-01-30 16.9 0 5 1961-01-30 17.4 0 6 1873-01-30 18.4 0 7 1897-01-30 18.5 0 8 1948-01-30 18.8 0 9 1881-01-30 19.2 0 10 2004-01-30 19.4 0

My first 0° since moving up here.

This is one of those rare times that a November 500mb pattern locked in for the winter.

An icy New Haven Harbor today looking west from the Pardee Seawall Park.

The closest 500 mb analog for December and January was 1958-1959. While it wasn’t an exact match for all the sensible weather, it was the closest 500 mb pattern to 2025-2026 since 1950. Pretty interesting that was also a rare late November SSW like we just had back in late November. https://csl.noaa.gov/groups/csl8/sswcompendium/majorevents.html NOV 1958 30-Nov-58 **** **** **** E E

This will be our coldest December and January period for many across the area since 2010-2011 as the averages will decline further the next few days. Time Series Summary for SUSSEX AIRPORT, NJ Click column heading to sort ascending, click again to sort descending. 2026-01-31 27.4 3 2025-01-31 28.5 0 2024-01-31 35.4 0 2023-01-31 35.4 0 2022-01-31 31.1 0 2021-01-31 31.3 0 2020-01-31 32.6 2 2019-01-31 30.4 0 2018-01-31 27.8 4 2017-01-31 32.2 0 2016-01-31 35.7 0 2015-01-31 29.1 0 2014-01-31 25.5 0 2013-01-31 32.3 0 2012-01-31 34.3 0 2011-01-31 24.7 0 Time Series Summary for New Brunswick Area, NJ (ThreadEx) Click column heading to sort ascending, click again to sort descending. 2026-01-31 30.7 3 2025-01-31 32.6 0 2024-01-31 38.3 0 2023-01-31 38.7 0 2022-01-31 35.4 0 2021-01-31 35.9 0 2020-01-31 36.7 0 2019-01-31 34.9 0 2018-01-31 31.0 0 2017-01-31 36.6 0 2016-01-31 39.9 0 2015-01-31 33.3 0 2014-01-31 30.5 0 2013-01-31 37.0 0 2012-01-31 37.7 0 2011-01-31 29.2 1 Time Series Summary for NY CITY CENTRAL PARK, NY Click column heading to sort ascending, click again to sort descending. 2026-01-31 32.9 3 2025-01-31 34.7 0 2024-01-31 40.8 0 2023-01-31 41.0 0 2022-01-31 37.0 0 2021-01-31 37.0 0 2020-01-31 38.7 0 2019-01-31 36.3 0 2018-01-31 33.4 0 2017-01-31 38.2 0 2016-01-31 42.6 0 2015-01-31 35.2 0 2014-01-31 33.6 0 2013-01-31 38.3 0 2012-01-31 40.3 0 2011-01-31 31.2 0 Time Series Summary for WESTCHESTER CO AP, NY Click column heading to sort ascending, click again to sort descending. 2026-01-31 30.1 3 2025-01-31 31.5 0 2024-01-31 37.2 0 2023-01-31 37.5 0 2022-01-31 33.0 1 2021-01-31 33.0 0 2020-01-31 35.5 3 2019-01-31 32.9 3 2018-01-31 29.5 0 2017-01-31 35.4 1 2016-01-31 38.6 0 2015-01-31 31.7 2 2014-01-31 29.4 0 2013-01-31 34.9 0 2012-01-31 37.0 0 2011-01-31 27.5 0 Time Series Summary for ISLIP-LI MACARTHUR AP, NY Click column heading to sort ascending, click again to sort descending. 2026-01-31 32.9 3 2025-01-31 33.5 0 2024-01-31 38.7 0 2023-01-31 39.0 0 2022-01-31 35.3 0 2021-01-31 35.0 0 2020-01-31 37.0 0 2019-01-31 34.6 0 2018-01-31 31.9 0 2017-01-31 36.4 0 2016-01-31 40.8 0 2015-01-31 34.1 0 2014-01-31 32.4 0 2013-01-31 36.8 0 2012-01-31 38.4 0 2011-01-31 29.3 0 Time Series Summary for IGOR I SIKORSKY MEMORIAL AIRPORT, CT Click column heading to sort ascending, click again to sort descending. 2026-01-31 31.2 3 2025-01-31 32.9 0 2024-01-31 37.7 0 2023-01-31 38.0 0 2022-01-31 34.3 0 2021-01-31 35.3 0 2020-01-31 36.4 0 2019-01-31 34.4 0 2018-01-31 31.0 0 2017-01-31 37.3 0 2016-01-31 40.2 0 2015-01-31 33.4 0 2014-01-31 31.0 0 2013-01-31 36.2 0 2012-01-31 38.4 0 2011-01-31 29.0 0

One of the biggest temperature swings coming up for Florida. West Palm Beach just set their new all-time January high temperature of 90°. Current model forecasts have them potentially getting their first freeze this weekend since 2010. Southeast Florida... West Palm Beach Ptcldy Sunny Mocldy Ptcldy Sunny Sunny Sunny /67 47/69 56/71 55/68 33/54 34/59 41/66 /20 10/00 00/10 20/30 20/00 00/00 00/00 Time Series Summary for West Palm Beach Area, FL (ThreadEx) - Month of Jan Maximum Monthly Temperature Click column heading to sort ascending, click again to sort descending. 1 2026 90 4 2 1942 89 0 3 2020 88 0 - 1926 88 2 Time Series Summary for West Palm Beach Area, FL (ThreadEx) - Dec through Feb Lowest Minimum Temperature Click column heading to sort ascending, click again to sort descending. 1 1894-1895 24 0 2 1904-1905 26 0 3 1976-1977 27 0 4 1989-1990 28 0 - 1984-1985 28 0 - 1920-1921 28 5 - 1916-1917 28 0 - 1898-1899 28 0 5 1981-1982 29 0 - 1969-1970 29 0 - 1917-1918 29 0 6 1983-1984 30 0 - 1970-1971 30 0 - 1962-1963 30 0 - 1906-1907 30 0 7 1985-1986 31 0 - 1957-1958 31 0 - 1955-1956 31 0 - 1934-1935 31 0 - 1927-1928 31 0 - 1921-1922 31 0 - 1909-1910 31 0 - 1897-1898 31 0 8 2010-2011 32 0 - 2009-2010 32 0 - 1988-1989 32 0 - 1980-1981 32 0 - 1977-1978 32 0 - 1965-1966 32 0 - 1964-1965 32 0 - 1947-1948 32 0

Great video of the ice flows in the Hudson River.

Interesting stat from Brian B. Climatologist49 ‪@climatologist49.bsky.social‬ Follow Newark Int Airport reported Heavy Snow and a temperature of 11F. This is the lowest temperature on record for them (1930-present) where they reported Heavy Snow. Previous record was 12F in 1932 and again in 2014. 12:23 PM · Jan 25, 2026 Everybody can

Very nice snow extent comeback for North America. https://www.star.nesdis.noaa.gov/smcd/emb/snow/HTML/snow_extent_monitor.html

The unusually early SSW event leading to the disruption of SPV in late November was possibly caused by an interaction between the record low Arctic Sea ice near the Barents and Kara regions and the -QBO. This event seems to have caused key features of the November 500 mb pattern to lock in for the winter. It’s also unusual for some many elements of a November pattern to become amplified and persist into the winter. The current activation of the STJ and the recent largest snowstorm since January 2022 for spots in the Northeast is probably the result of the forcing finally shifting east of the Dateline. https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2025JD044403 one model, HadGEM3-GC31-MM, has a statistically significant equatorward shift in vortex latitude, deceleration of vortex winds, and increase in sudden stratospheric warmings. Its response is found to be highly state-dependent, significant only in the easterly phase of the quasi-biennial oscillation (QBO). Though we cannot comprehensively conclude why models simulate this range of responses, our analysis does highlight areas for consideration in future work to better constrain the stratospheric response to Arctic sea-ice loss. We explore the role of ensemble size, resolution and basic state, including zonal-mean winds in the polar and midlatitude stratosphere and upper troposphere, as well as the QBO. https://alaskaclimate.substack.com/p/december-2025-arctic-climate-summary For the second December in a row, the Arctic-wide average sea ice extent was the lowest on record in all of the major sea ice analyses. In the National Snow and Ice Data Center analysis, the December 2025 average extent was 11.22 million km², which is about 15 percent lower than the late 20th century December average. The Barents Sea and Baffin Bay had the lowest December extent on record, and northeast of Svalbard the average pack ice edge was north of 81°N November 2025 and December into January 2026 500mb composites

Great to see our first 12”+ event since January 2022 at multiple locations including the official observations at Bridgeport and Islip. Bridgeport Airport 15.3 in 0700 AM 01/26 Official NWS Obs Islip Airport 13.0 in 0700 AM 01/26 Official NWS Obs