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March 2022


wdrag
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23 minutes ago, wdrag said:

Stratwarm advertised by the EC 10MB weeklies in late February?  Seems like it, but counter arguments will be reviewed. Might take longer to dissipate this cooler spell than currently ensembled?

Yeah, it was part of the final warming event and record Scandinavian Ridge buckling the flow. The EPS has the record cold potential into early next week with the strong blocking. Weaker blocking and cold during the first week of April. Then a lingering Northeast trough  at the end of the run on the 10th. 
 


8B09AC75-1486-4665-8731-B1A9D70FBC50.gif.d92827f13e9be4be86639e69c3140bca.gif

9F07B7A7-68E1-4E6D-B90C-7206CD02B3A2.gif.044bc7ac008639e93b4a0b0e12eeb900.gif

6B4F8DB1-49CC-46CB-B056-2307C1511DA0.gif.ab21c4fc580e39f4c756ce49de268c33.gif

 

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8 hours ago, donsutherland1 said:

No. NYC had a low of 21.

weird, a 5 degree difference between EWR and NYC for the low? I wonder why?  Don, did JFK get into the teens?  Also how did EWR get 12.8" and NYC only got 9.6"?  The other airports were even lower (8")-- and I thought ISP had more snow (more snow further to the east)?

 

 

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2 hours ago, bluewave said:

Yeah, it was part of the final warming event and record Scandinavian Ridge buckling the flow. The EPS has the record cold potential into early next week with the strong blocking. Weaker blocking and cold during the first week of April. Then a lingering Northeast trough  at the end of the run on the 10th. 
 


8B09AC75-1486-4665-8731-B1A9D70FBC50.gif.d92827f13e9be4be86639e69c3140bca.gif

9F07B7A7-68E1-4E6D-B90C-7206CD02B3A2.gif.044bc7ac008639e93b4a0b0e12eeb900.gif

6B4F8DB1-49CC-46CB-B056-2307C1511DA0.gif.ab21c4fc580e39f4c756ce49de268c33.gif

 

Chris, any prediction on when our last freeze might be for NYC/JFK/EWR?  Early April?  Any snow chances then too?

 

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3 hours ago, bluewave said:

While record warmth has become the norm around here, Monday into Tuesday will be one of those rare chances for record cold. We usually don’t see this type of unmodified Arctic airmass directly from near the North Pole. The 850 mb temperatures will be among the lowest on record since 1979 for this time of year.


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590B705D-B87C-4911-96CA-338D346D4FE9.thumb.png.16531ffd3777ae6f96543c8612ed229f.png

 

Colder than April 1982 or April 1995?

 

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2 hours ago, LibertyBell said:

weird, a 5 degree difference between EWR and NYC for the low? I wonder why?  Don, did JFK get into the teens?  Also how did EWR get 12.8" and NYC only got 9.6"?  The other airports were even lower (8")-- and I thought ISP had more snow (more snow further to the east)?

 

 

ISP had 16”.  There was an area of < 10” that included BDR, JFK, LGA, and NYC. I suspect subsidence contributed to those lower amounts, as higher amounts were recorded to the east and west.  If there wasn’t such an area of reduced amounts, the argument about measurements might have had greater validity.

JFK had a low of 20.

 

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3 hours ago, weathermedic said:

Date on the bottom one is from Nov 13, 2021

Yeah, that was our last out of season hailstorm like today. So now we have a significant March hailstorm following one in November. Parts of CT had enough hail accumulation to cause spin outs.
 

 

 

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An Arctic air mass is poised to invade the region. The frigid air will begin to move into the region tomorrow. Parts of the area could see some snow showers or even a snow squall that could briefly whiten the ground.

Monday and Tuesday will see low temperatures fall well into the 20s in New York City and Philadelphia with teens in some areas outside the cities.

The mean last dates for readings below 30° are:

New York City: March 22 (1981-10: March 24)
Philadelphia: March 22 (1981-10: March 25)

Last year, both cities saw the temperature fall into the 20s for their last time on April 2.

In past cases where the MJO was in Phase 1 during the March 5-15 period with an amplitude of 1.500 or above on one or more days, as occurred this year, all four cases when the ENSO Region 3.4 anomaly was positive were warmer to much warmer than normal. In contrast, all three cases where the ENSO Region 3.4 anomaly was negative, as is the case this year, were colder to much colder than normal.

Mean Temperature for ENSO Region 3.4 anomalies < 0°C during March 22-31:

Boston: 38.7°; Normal: 42.2°
New York City: 41.8°; Normal: 46.2°
Philadelphia: 42.2°; Normal: 47.3°

Actual data coupled with modeling for the rest of March show that all three cities will wind up with a colder than normal March 22-31 period.

The ENSO Region 1+2 anomaly was 0.0°C and the Region 3.4 anomaly was -0.9°C for the week centered around March 16. For the past six weeks, the ENSO Region 1+2 anomaly has averaged -1.05°C and the ENSO Region 3.4 anomaly has averaged -0.85°C. La Niña conditions will likely persist through March.

The SOI was +5.79 today.

The preliminary Arctic Oscillation (AO) was -1.113 today.

On March 24 the MJO was in Phase 4 at an amplitude of 1.098 (RMM). The March 23-adjusted amplitude was 1.218 (RMM).

Based on sensitivity analysis applied to the latest guidance, there is an implied near 100% probability that New York City will have a warmer than normal March (1991-2020 normal). March will likely finish with a mean temperature near 45.5° (2.7° above normal).

 

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