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Records: Highs: EWR: 63 (1965) NYC: 63 (1965) LGA: 63 (1965) JFK: 55 (2011) Lows: EWR: 2 (1962) NYC: -7 (1917) LGA: 3 (1962) JFK: 5 (1962) HIstorical: 1862: Confederate soldiers used the cover of fog in the Battle of Stone's River in Tennessee to attack Union encampments. (Ref. AccWeather Weather History) 1863: The famous "New Year's Blizzard" swept across the Midwest. Temperatures dropped during the daytime from -8 °F to -24 °F in parts of Iowa. (Ref. AccWeather Weather History) 1880: DCA had the lowest minimum temperature recorded for December -13 degrees F. The temperature reading was made at the weather bureau office at 24th and M Street, NW. This same air mass gave the lowest minimum temperature ever recorded in January for Washington -14 degrees F. Thus, one air mass set the all-time record low temperature for the two months of January and December in Washington. (Ref. Washington Weather Records - KDCA) (Ref. Wilson - Additional Temperatures Listed On This Link) 1882: Downtown San Francisco saw 3.5 inches of snow. 1917 - The temperature at Lewisburg, WV, plunged to 37 degrees below zero to set a state record. (Sandra and TI Richard Sanders - 1987) 1929 - Greenland Ranch, in Death Valley, California, went the entire year without measurable precipitation. (The Weather Channel) 1933 - A 24 hourrainfall of 7.36 inches set the stage for the worst flood in Los Angeles history. Flooding claimed 44 lives. (David Ludlum) 1933: During the last week of December, a series of winter storms pounded the mountainside with 12 inches of rain near Los Angeles. More rain occurred on New Year’s Eve, including 4.86 inches in downtown Los Angeles. The 4.86 inches is currently the fourth most rainfall to occur in one day in downtown Los Angeles since 1877. Around midnight, hillsides in at least three mountain locations collapsed sending millions of tons of mud and debris into the Crescenta Valley neighborhoods below. Crescenta Valley is a few miles north of Los Angeles. This mudslide destroyed more than 400 homes. Following the disaster, the U.S. Army Corps of Engineers and the County of Los Angeles built a flood control system of catch basins, and concrete storm drains, designed to prevent a repeat of the 1934 disaster. The Historical Society of the Crescenta Valley has a few “Then and Now” photos from this event. 1941 - Snow which began on New Year's Eve became a major blizzard on New Year's Day, burying Des Moines, IA, uunder 19.8 inches of snow in 24 hours, an all-time record for that location. (The Weather Channel) 1947 - A late afternoon tornado touched down 10 miles north of Shreveport LA, and dissipated south of El Dorado AR. The tornado, as much as 400 yards in width, killed 18 persons. It damaged or destroyed two thirds of the structures at Cotton Valley LA. (The Weather Channel) 1951: No annual measurable snow in Richmond, Virginia from 1897 to 2010 was observed only once in 1951. (Ref. Richmond Weather Records) 1955: Hurricane Alice became both the latest and the earliest hurricane on record in the Atlantic when she became a hurricane on December 31, 1954 and battered the Leeward Islands with winds of 85 mph on this date. Hurricane Alice is the only known Atlantic hurricane to span two calendar years and one of only two named Atlantic tropical cyclones, along with Tropical Storm Zeta of 2005, to do so. It was officially recognized as a significant tropical cyclone on January 2, 1955. At the time, the National Weather Service used the same naming list each year, so the name given to this storm was "Alice" and it was designated as a part of the 1955 Atlantic hurricane season. However, it was found during post-storm analysis that the storm had actually formed on December 30, and was instead a part of the 1954 season. Therefore, the season had two storms named "Alice" — the first storm of the season, and the last. Had Alice been discovered before the end of the calendar year, it would have been named Irene, the next name on the 1954 list. Some reports named this storm Alice2 to avoid confusion with the earlier Alice from June 1954.(Ref. Wikipedia.org) (Ref. AccWeather Weather History) 1962: Perhaps the worst blizzard in the history of the state of Maine finally came to an end. The storm produced 40 inches in 24 hours at Orono, and a total of 46 inches at Ripogenus Dam. Gale force winds produced snowdrifts twenty feet high around Bangor. A disastrous ice storm was over Georgia and South Carolina. It ravaged the two states for days causing more than seven million dollars damage. (Also see Dec. 30th, 1962) (David Ludlum) (The Weather Channel) 1962 - Perhaps the worst blizzard in the history of the state of Maine finally came to an end. The storm produced 40 inches in 24 hours at Orono, and a total of 46 inches at Ripogenus Dam. Gale force winds produced snow drifts twenty feet high around Bangor. A disastrous icestorm was over Georgia and South Carolina. It ravaged the two states for days causing more than seven million dollars damage. (David Ludlum) (The Weather Channel) 1963 - A snowstorm struck the Deep South. Meridian, MS, received 15 inches of snow, 10.5 inches blanketed Bay St Louis MS, and 4.5 inches fell at New Orleans LA. Freezing temperatures then prevailed for New Year's Day. (David Ludlum) 1967: The kickoff temperature for the NFL Championship Game between the Dallas Cowboys and the Green Bay Packers was -13°F with a wind chill of -36°F. This game is known as the “Ice Bowl.” 1982: The rain gauge total for this December in Puu Kukui, HI (elevation almost 5,800 feet near the top of the West Maui Mountains) was 42.00 inches; the year’s total: 704.83 inches (or 58.7 feet or 19.6 yd). This is the all-time greatest calendar year rainfall for the U.S. (Ref. Weather Guide Calendar with Phenomenal Weather Events 2011 Accord Pub. 2010, USA) 1987 - Torrential rains caused extensive flash flooding over eastern sections of the island of Ohau in Hawaii, resulting in many rock and mud slides. Rainfall totals ranged up to 22.89 inches in a 24 hour period, and property damage was estimated at 35 million dollars. Strong winds continued to usher arctic cold into the north central U.S. The temperature at Alexandria MN remained below zero through the day, and Jamestown ND reported a wind chill reading of 58 degrees below zero. Gales lashed the Great Lakes, with wind gusts to 54 mph reported at Lansing MI. (Storm Data) (The National Weather Summary) 1988 - Warm and wet weather prevailed in the southeastern U.S. Six cities in Florida reported record high temperatures for the date. Thunderstorms produced locally heavy rains from the Lower Mississippi Valley to the Southern Atlantic Coast. (The National Weather Summary) 1989 - The year and decade ended on a soggy note in the eastern U.S. Thunderstorm rains pushed precipitation totals for the year to 88.32 inches at Baton Rouge, and to 75.37 inches at Huntsville AL, establishing all-time records for those two locations. Dry weather continued in California. Sacramento and San Francisco finished the month without any rain or snow, and Santa Maria reported their driest year of record with just 3.30 inches of precipitation. (The National Weather Summary) (Storm Data) 1992: Wenatchee, WA received 6 inches of snow to bring the snow depth to 26 inches, to set a record for the location. The previous record was 24 inches on 2/11/1969. (Ref. AccWeather Weather History) 1994: A late afternoon tornado touched down 10 miles north of Shreveport, LA, and dissipated south of El Dorado AR. The tornado, as much as 400 yards in width, killed 18 persons. It damaged or destroyed two thirds of the structures at Cotton Valley, LA. (The Weather Channel) 1996: Storms that have battered the Northwest since Christmas boosted Eureka, California, to its wettest December on record, with 21.26 inches. Portland, Oregon, wound up its second wettest year on record with 63.56 inches. The record was 67.24 inches in 1871. Many other reporting stations in the Pacific Northwest also recorded their wettest years on record in 1996.(Ref. AccWeather Weather History)Fog caused a 70 car pileup on I-10 between Ne 2000: The “Snow Bowl” was played between Mississippi St and Texas A&M at Independence Stadium in Shreveport, Louisiana. Snow began about a half hour before kickoff and didn’t stop until well after the bowl game. 2010 - Unusually warm air fueled strong storms in the midwestern and southern U.S., producing high winds and a preliminary count of 53 tornadoes across five states. At least eight people were killed in Missouri and Arkansas and dozens of others were injured. In Mississippi, about 200 people were evacuated from the Jackson-Evers International Airport, where an EF-2 tornado crossed a runway. (NCDC)

Trends are decent. Wish it was trending like this a day or two ago, though.

2.3” before midnight to be a top 10 December. That would make 2 top 10’s in the last 5 years. If the airport was 20 miles south, this would be even more. Really solid considering mostly northern stream systems and LES. https://x.com/nwspittsburgh/status/2006357818778206610?s=46

Snow growth looks very good. IF we can muster .1" qpf then I could see 1-2" in spots ..

Put a coating to an inch on top of the pack we have, and it’ll look and feel nice at least. Small victories I guess.

I wish we could get a triple point going near the CT coast. Not usually a great setup to get better amounts as we head towards go time with a low over Burlington VT.

I agree that pattern generally does not support sustained blocking. That said, I wouldn’t rule out an opportunity while that pattern settles in and while the blocking decays.

Any mechanics that could possibly enhance the potential? Or are we locked in for heavy coatings?

EURO hitting squalls hard too

28 / 12 cloudy. In a 2 day turn around the latest forecasts have spun a gentler period to one that transfers to a warmer one. We'll see if the current Dec and ate Nov trend continues to see any pronounced warmup short and muted once here and more focused south and wetst. Otherwise once to around the 7th its near to above normal. 12/31 - 1/5 : Colder than normal - potential light snow with reinforcing clippers 12/31 , 1/2-1/3 1/6 - 1 / 11 : Near normal - warmer 1/12 - beyond : ridge into the east - warmer

Agreed. And yes, when we do have/get 99% of the ingredients together, we can’t seem to get the oven turned on so to speak. Like Will just said(and I’ve been saying it too) it’s very reminiscent of the mid to late 80’s-the early 90’s(92). Nothing wants to gel(major that is)for our area lately. Anyway, we roll the dice.

I have been here going on 12 years now, I have NEVER seen Manchester as busy as it was yesterday, not even Columbus Day, etc. Xmas and New years weeks are normally busy, I don't know what to make of it. Maybe the cold and wind scared a lot of folks away from the mountains yesterday? Or just in general its been cold and snowy, so more peeps vacationing this week? It was strange, lots of folks commenting about locally too.

HRRR still looking like coating to 1" on snow tonight , then an impressive squall line around sunrise dropping another coating to 1" .. SE New England still favored for more tonight especially cape and eastern maine

Hrrr with a low over BTV lol. But Seymour is right, it has a line of squalls verbatim. Otherwise kind of meh outside SE areas.

Yea that’s after any warm up. That probably would work verbatim. However every time we have seen that something shits the bed.

To my untrained eye, That isn’t a bad look there. I mean it is 14-15 days away, so we know the deal. But verbatim that looks pretty decent, and getting into peak climo.

Per recent verification scores, it's a tad concerning the 0z GFS is more pro-cold than the 0z Euro, granted one run doesn't make a forecast. I imagine models are picking up on a transient warm spell before the hammer drop. As Carver noted last week, it just takes a few members to skew the batch. Still scratching my head why CPC is so warm for in their extended outlooks. Also, 'tis interesting amidst the flip-flopping, there are signs a +TNH pattern may develop. That in tandem with a -EPO can work for most of the forum but given the SE ridge pumping that signal can induce, I prefer the 'old school' -NAO/-AO being a more dominant driver. At least the southern jet looks cooperative. Preferably, I like average to slightly below average precip for January/February given what that can imply. I recall past Nina winters that went super zonal in January. Doesn't look that way this go-around.

Nice! Even a broken clock is right twice

Overperformed overnight with this initial disturbance. I drove out to Morgantown at 630a for a workout class at Orangetheory which wasn’t the best idea. White knuckle driving the whole way on 68. Roads were not in good shape between the falling and blowing snow. We had about 1.5” when I left the house, time to head back.

December will come to a close today with 26 days of snow cover out of 31. Temperatures will average about 3.0° below the new high normal, and snow fall for the month will close with 17 inches. Other than Christmas being barely white the month closes as a sold A-. A white Christmas like last year, with a 4-5 inch snowpack on the ground Christmas morning, would have made it an A.

GEFS and AI GEFS both showing cold around the 12th, while the EPS is warm

1.5"

Maybe an 8-14” Leon event visits?

There is snow on the beach at OCMD this am.....pull up a webcam!

I’ve had one double digit storm (and it was barely double digits) since Feb 2022. This truly feels like that 1988-1992 stretch except warmer (at least prior to last winter) and not quite as paltry on seasonal snow totals here…but close enough. Really could use a big storm to break the drought.