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donsutherland1

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  1. With no snow expected today, Winter 2022-2023 is just one of three winters will have seen less than 1" of snow through February 5th. Both prior winters had little or snowfall through all of February. Some other winters that ended January with less than 2.5" of snow wound up with snowy outcomes in February.
  2. The Northeast saw near record and record cold temperatures this morning, as a fierce Arctic air mass moved through the region. That air mass is now rapidly departing. Daily records included: Binghamton: -13° (old record: -4°, 1996) Boston: -10° (old record:-2°, 1886) Bridgeport: -4° (old record: 5°, 1955 and 1996) Hartford: -9° (old record: -8°, 1965) Montreal: -21° (old record: -20°, 1963) Mount Washington, NH: -47° (old record: -35°, 1963) ***new monthly and state monthly record*** New Haven: -3° (old record: 4°, 1963 and 2011) New York City-JFK: 4° (old record: 9°, 1955 nd 1996) New York City-LGA: 5° (old record: 10°, 1955, 1963, 1978 and 1996) Newark: 5° (old record: 7°, 1985 and 1996) Ottawa: -26° (old record: -22°, 1948) Providence: -9° (old record: -2°, 1918) Rivière-du-Loup, QC: -22° (old record: -19°, 1996) Quebec City: -25° (old record: -21°, 1996) Sherbrooke, QC: -24° (old record: -6°, 2009) Trois-Rivières, QC: -25° (old record: -20°, 1996) White Plains: 1° (old record: 4°, 1978) Worcester: -13° (old record: -4°, 1908, 1918, and 1934) Yarmouth, NS: -7° (old record: -2°, 1967) As had been the case during the December Arctic shot in a winter of almost unbroken warmth, the current Arctic shot responsible for the near record and record cold will be a fleeting one. The temperature will rocket toward normal levels and then above normal levels tomorrow. Above normal temperatures will continue through Friday. The potential exists for temperatures to run generally above to much above normal through mid-month. Both the CFSv2 and EPS weeklies show much above normal temperatures through the second week of February. A storm could impact the region during February 10-11 if some of the guidance is right. The ENSO Region 1+2 anomaly was -0.2°C and the Region 3.4 anomaly was -0.6°C for the week centered around January 25. For the past six weeks, the ENSO Region 1+2 anomaly has averaged -0.32°C and the ENSO Region 3.4 anomaly has averaged -0.70°C. La Niña conditions are beginning to fade and they should evolve to neutral conditions during late winter or early spring. The SOI was +19.41 today. The preliminary Arctic Oscillation (AO) was -0.463 today. On February 2 the MJO was in Phase 3 at an amplitude of 1.644 (RMM). The February 1-adjusted amplitude was 1.666 (RMM).
  3. As milder air pressed northward into a rapidly retreating Arctic air mass, the sky was filled with high and mid-level clouds. The mercury slowly clawed its way back from the single digits, climbing through the teens, and into the 20s. Two photos.
  4. With single-digit days becoming increasingly uncommon in New York City, the average interval between the first and last such day during a season has declined. Winter 2022-23's interval of 43 days (assuming today will be the last such day this season) is the largest since Winter 2014-15 when the interval was 48 days.
  5. Morning thoughts… Near record and record cold readings will give way to a less harsh, but still cold afternoon. High temperatures will reach the middle and upper 20s in most of the region. Likely high temperatures around the region include: New York City (Central Park): 25° Newark: 26° Philadelphia: 30° It will turn much milder tomorrow. Normals: New York City: 30-Year: 40.3°; 15-Year: 40.5° Newark: 30-Year: 40.9°; 15-Year: 41.1° Philadelphia: 30-Year: 42.1°; 15-Year: 42.1°
  6. An Arctic air mass now covers the region. Blustery winds will continue to drill cold air into the region for much of the night. The weekend will start off on a bitterly cold note. Parts of the northern Mid-Atlantic and southern New England areas will see record cold readings. Despite ample sunshine, the mercury will rise only into the lower to middle 20s across much of the region. In southern New England, Boston will likely see its first subzero temperature since January 7, 2018 when the temperature reached -2°. The potential exists for Boston to see a -5° or below temperature. The last time that happened was February 14, 2016 when the thermometer fell to -9°. That would also be the coldest February temperature following a January with a mean temperature of 35° or above (January 2023 had a mean temperature of 37.8°). Select Record Lows for February 4th: Boston: -2°, 1886 Bridgeport: 5°, 1955 and 1996 Montreal: -20°, 1963 Mount Washington, NH: -35°, 1963 New Haven: 4°, 1963 and 2011 New York City-JFK: 9°, 1955 nd 1996 New York City-LGA: 10°, 1955, 1963, 1978 and 1996 Portland: -19°, 1971 Providence: -2°, 1918 White Plains: 4°, 1978 Through 6 pm, Mount Washington has had a low temperature of -45°. That crushes the daily record of -32°, which was set in 1963. As had been the case during the December Arctic shot in a winter of almost unbroken warmth, the current Arctic shot will be a fleeting one. Just a day after the height of the cold, the temperature will rocket toward normal levels and then above normal levels a day later. The potential exists for temperatures to run above to much above normal through mid-month. Both the CFSv2 and EPS weeklies show much above normal temperatures through the second week of February. The ENSO Region 1+2 anomaly was -0.2°C and the Region 3.4 anomaly was -0.6°C for the week centered around January 25. For the past six weeks, the ENSO Region 1+2 anomaly has averaged -0.32°C and the ENSO Region 3.4 anomaly has averaged -0.70°C. La Niña conditions are beginning to fade and they should evolve to neutral conditions during late winter or early spring. The SOI was +20.41 today. The preliminary Arctic Oscillation (AO) was -0.385 today. On February 1 the MJO was in Phase 3 at an amplitude of 1.663 (RMM). The January 31-adjusted amplitude was 1.829 (RMM).
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