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October 2023


wdrag
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13 minutes ago, bluewave said:

It was too cool in its forecasts from yesterday missing the 60s in Suffolk. It has a bit of a cold bias like the other models. It had the 60s limited to south of BLM.

CA8C2756-8D6D-4EAB-A1E4-88EE6605DC69.thumb.gif.972c8736af6718f18140520bbc4ed0e9.gif

Euro had close to 70’s around  most of the metro which was awful 

IMG_2480.png

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7 minutes ago, Allsnow said:

Euro had close to 70 around most of the metro which was awful 

IMG_2480.png

The Euro isn’t a meso so it can’t resolve very well how far north the actual front is going to get on stalled frontal days like this. But it’s doing much better than the NAM in the actual warm sector. The NAM only had highs in the low 70s in SNJ its forecast from yesterday. It already made it to 80° near Cape May. So the Euro had a better forecast for the actual highs in the warm sector. But the mesos excell at the actual placement of where the fronts will stall. Also notice the cool bias with the Euro missing the 80° in SNJ.

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8 hours ago, Brian5671 said:

Same here-rain every weekend has made things saturated and with vegetation going dormant it's soggier now than say a month ago...

Yup. As stuff started giving up in mid September the ground got softer (if that was possible). Now it's just spongy.

@wdrag Heh, the reservoirs are only that low up here because they've had the gates open for weeks. My local ponds are past bankful and the creeks rage 24/7.

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Much colder air is now pouring into the region. Following the frontal passage, the coldest air of the season will cover the region to end October and begin November. The chill will moderate by next weekend.

October is solidly on track to finish as a warmer than normal month. Since 1950, only a single El Niño event with a monthly ENSO R3.4 anomaly of +1.00°C or above was warmer than normal in New York City during October: 2015 (sample size: 6). If one lowers the ENSO R3.4 anomaly to +0.75°C or above, only two 2/12 (17%) of El Niño cases saw a warmer than normal October in New York City: 1963 and 2015. Both years saw warm Octobers followed by warm Novembers.  

The ENSO Region 1+2 anomaly was +2.6°C and the Region 3.4 anomaly was +1.6°C for the week centered around October 25. For the past six weeks, the ENSO Region 1+2 anomaly has averaged +2.47°C and the ENSO Region 3.4 anomaly has averaged +1.57°C. El Niño conditions will likely continue to strengthen into the fall with the current East-based event transitioning to a basinwide El Niño for the upcoming winter. That transition is currently underway.

The SOI was +6.96 today.

The preliminary Arctic Oscillation (AO) was -0.552 today.

On October 27 the MJO was in Phase 7 at an amplitude of 1.120 (RMM). The October 26-adjusted amplitude was 1.239 (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 October (1991-2020 normal). October will likely finish with a mean temperature near 60.4° (2.5° above normal).

 

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The last day of October is averaging  50degs.(46/54) or -3.

Month to date is  60.9[+2.8].      October should end at  60.5[+2.6].

Reached 62 yesterday at 1pm.

Today: 48-52, wind e., increasing clouds, Rain after midnight, 43 by tomorrow AM.

48*(68%RH) here at 7am.     48* at 9am.      53* at Noon.     Reached 54* at 1pm.     52* at 8pm.

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