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February 2026 OBS & Discussion


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Just now, MJO812 said:

Courtesy of 33andrain

1771243200-4lkWfnh24eE.png

Quite a bit of spread. We can start paying attention to operationals by wednesday perhaps. I'm not thrilled about the garbage pacific though. Would need the good atlantic to carry the storm.

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1 minute ago, MarcmmKU said:

Quite a bit of spread. We can start paying attention to operationals by wednesday perhaps. I'm not thrilled about the garbage pacific though. Would need the good atlantic to carry the storm.

We need a negative PNA to get moisture up here unless you like suppression.

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Just now, MJO812 said:

We need a negative PNA to get moisture up here unless you like suppression.

Negative PNA is like playing with fire. Can easily cut too much with it. I'd rather have +PNA and risk suppression. Historically the big ones all had +PNA too.

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Just now, MarcmmKU said:

Negative PNA is like playing with fire. Can easily cut too much with it. I'd rather have +PNA and risk suppression. Historically the big ones all had +PNA too.

We should be fine as long as the PNA isnt deeply negative which it will not be.

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25 minutes ago, Stormlover74 said:

Took me 5 hours to drive 10 miles home from work. It was such a heavy wet snow

It was incredible, 13” in 4 hours (16.5” total) with a stiff 15-20 mph wind - gusts to 30.  9 to 1 type density.  Very high impact.  Lots of schools were in session that day with kids basically trapped.

Wide spread 20-30+ a bit further inland.

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16 minutes ago, MarcmmKU said:

Negative PNA is like playing with fire. Can easily cut too much with it. I'd rather have +PNA and risk suppression. Historically the big ones all had +PNA too.

Things change during the second half of February as wave lengths shorten. Since 1950, 75% of NYC's  February 15 or later 10" or above snowstorms had a PNA-.

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5 minutes ago, donsutherland1 said:

Things change during the second half of February as wave lengths shorten. Since 1950, 75% of NYC's  February 15 or later 10" or above snowstorms had a PNA-.

Shorter wavelengths defintely help

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2 hours ago, Stormlover74 said:

Retreating high pressure. Never good

Of course it's a week away so we can hope that the high pressure won't be retreating as much as the current models show. Euro right now is showing a front end of a few inches and then a mix changing to rain. The position of the high pressure will be critical and we have a long way to go to figure that out. 

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2 hours ago, snowman19 said:


With the lone exception of the end of January storm, since November, it has, by and large, been a dry winter. We are still in drought conditions and really have been since the fall of 2024…..

 

 

 

 

The higher ratios helped us out this winter with our snows since we have been continuing with this drier pattern since the fall of 2024. 
 

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23 minutes ago, MANDA said:

Don, what would be the one before 1982?  Just wondering.

Here are the 16-day stretches with mean temperatures below 20° beginning with Winter 1975-76. I haven't added 2025-26, because the value isn't final, but it will come in between 19.7° and 19.9°.

image.png.1fbbe74c447c23a6c2089ab412f3e5c7.png

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11 minutes ago, donsutherland1 said:

Here are the 16-day stretches with mean temperatures below 20° beginning with Winter 1975-76. I haven't added 2025-26, because the value isn't final, but it will come in between 19.7° and 19.9°.

image.png.1fbbe74c447c23a6c2089ab412f3e5c7.png

Thanks.  I knew January 77 had to be on the list.  Late 70’s into early 80’s had some solid cold.  Hard to believe it took from 82 until now to add to the list.

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14 minutes ago, steve392 said:

16 degrees in my back porch and frozen pipes on second floor bathroom.  Might be ripping open a wall tonight. 

Frozen main line even with the water dripping last night.  Been a fun day.  Apparently I've heard there's 1000s like us out there.

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1 hour ago, donsutherland1 said:

Here are the 16-day stretches with mean temperatures below 20° beginning with Winter 1975-76. I haven't added 2025-26, because the value isn't final, but it will come in between 19.7° and 19.9°.

image.png.1fbbe74c447c23a6c2089ab412f3e5c7.png

Thanks.  My memory of the 1982 winter was all about the April blizzard.  I didn't realize that winter featured a rare cold snap as well.

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The coldest day of Winter 2025-2026 is now going into the books. Tomorrow will start very cold, but the afternoon will be less harsh as readings climb into the middle and upper 20s. The temperature will reach or exceed freezing on Tuesday.

The persistent and often severely cold pattern is poised to break near February 10th. However, exceptional warmth appears unlikely through at least mid-February, even as milder readings return. After mid-month, highs could begin to reach the lower 40s.

The ENSO Region 1+2 anomaly was +0.1°C and the Region 3.4 anomaly was -0.4°C for the week centered around January 28. For the past six weeks, the ENSO Region 1+2 anomaly has averaged -0.38°C and the ENSO Region 3.4 anomaly has averaged -0.57°C. La Niña conditions will likely continue into at least late winter.

The SOI was +0.05 today. 

The preliminary Arctic Oscillation (AO) was -3.397 today. 

Based on sensitivity analysis applied to the latest guidance, there is an implied near 90% probability that New York City will have a cooler than normal February (1991-2020 normal). February will likely finish with a mean temperature near 31.0° (4.9° below normal). 

Supplemental Information: The projected mean would be 4.3° below the 1981-2010 normal monthly value. 

Overall, Winter 2025-2026 is on track for a seasonal mean temperature of 31.8°. That would be the lowest winter mean temperature since Winter 2014-2015 when the mean temperature was 31.7°. Winter 2025-2026 would only become the fourth winter of the 21st century with a mean temperature of 32.0° or below.

 

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