Tag Archives: warm sector

NYC Weather Update – Oct 23, 2017

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The warm spell we’ve enjoyed over the last week and longer will finally come to a close mid-week this week. Before that, we will receive a round of much needed moderate to heavy rain in conjunction with the approach and passage of a frontal system. Behind this front, as winds shift to the northwest, temperatures will cool into a more seasonable range for this time of year.

Rest of today – mild, partly sunny with clouds increasing, high temperatures in the low-70s.

Tuesday – we’ll still be in the warm sector ahead of an advancing cold front. Temperatures remain mild in the low-70s, however, we should expect several rounds of moderate to heavy rain during the day. As the pressure gradient increases with proximity to an advancing cold front, stiff south winds in the 20 mph range with stronger gusts could occur. Rain continues and increases in intensity overnight. Windy conditions continue. Thunderstorms are possible with some of the strongest lift and convection close to the cold front. We could pick up 2-3 inches in places by the end of this event, as this long period of southerly winds will have ushered in a tropical airmass rich with moisture.

Wednesday – the cold front doesn’t actually push through until late Wednesday. Lingering showers could occur in the morning prior to the frontal passage. High temperatures should still be fairly mild, near 70°F.

Thursday – winds will shift to the north and west following the passage of this vigorous cold front. Behind the front, temperatuers will be about 10°F cooler, resulting in high temperatures topping out in the low-60s with mostly sunny skies.

 

NYC Weekend Weather – Oct 20, 2017

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High pressure continues to exert its influence over the region through the weekend and into the beginning of next week. Temperatures will be quite mild and about 10°F above normal for this time of year. Ideal viewing conditions exist for the Orionid meteor showers.

Rest of today – sunny and mild with highs in the low-mid 70s despite northwest winds.

Saturday – similar setup as today. Sunny with highs in the low-mid 70s. Winds shift to the south as high pressure moves east and offshore.

Thanks to this persistent area of high pressure over the eastern US, we’ve a long bout of sunny and dry weather that continues through the weekend.

Sunday – mild and mostly sunny with high temperatures again in the low-mid 70s.

Monday – increasing clouds and slightly warmer with highs in the mid-70s. We’ll be in the warm sector ahead of an advancing, slow-moving frontal boundary. This feature will bring our next and much needed chance at precipitation into Tuesday.

Orionid meteor showers
These will be peaking over the weekend. Look towards the constellation Orion during the overnight hours with best conditions at around 2AM. Astronomers are expecting a peak of 15-20 meteors per minute radiating from this constellation. The meteors are actually fragments of Halley’s comet, which approaches perihelion (closest pass to the sun) next in 2061. If you’re lucky enough to get away from light pollution, you won’t have any moonlight to contend with either. Sky conditions will be ideal this weekend.

NYC Weekend Weather – Jun 3, 2016

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Last weekend featured weather more typical of late-July for the region. This weekend, temperatures will be much cooler, and we may see some heavy rain and possibly even a marginally severe thunderstorm Sunday. Next week, temperatures remain in the below to near-normal range as we feel the impacts of a lingering low pressure over Eastern Canada.

Rest of today – cloudy, with high temperatures in the mid-70s. Areas of rain will continue pushing through the area until around 3PM this afternoon.

Saturday – the nicer of the weekend days, partly sunny with high temperatures in the low-80s. Some chance for scattered showers and thunderstorms especially north and west of the city.

Sunday – a warm front pushes through early, putting us in the warm sector prior to the approach of a cold front associated with a low pressure center over Quebec. This set up could support the development of marginally severe thunderstorms, and the training of multiple storm cells could also lead to some minor flooding. Temperatures will be in the mid-70s. Rain tapers off overnight.

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Storm Prediction Center has put portions of the region under a slight chance for severe weather Sunday.

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Monday – weather calms down again and temperatures go back up to around 80ºF as clouds clear up.

Tuesday – mostly sunny with a high again near 80ºF.

NYC Weather Update – Feb 02, 2016

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The calendar says it’s February, but you’d be forgiven for thinking otherwise with temperatures soaring well into the upper 50s this afternoon. The warm trend continues through the middle of this week, when a potent storm system that will be bringing blizzard conditions to some parts of the Midwest (including Iowa, where caucus turnouts may be adversely impacted) passes through the area. Looking ahead, a cool down is on the way, as is the potential for another coastal storm on the day after the Super Bowl. At this time, thermal profiles are not looking conducive for snow, but as we all saw from the last storm, things could very well change as this storm system evolves.

Rest of today – quite warm, with high temperatures well in the upper 50s under mostly cloudy skies. Periods of light rain look to persist as a cold front makes its way across the area this evening, though it appears most of the precipitation should end by 7PM this evening.

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High Resolution Rapid Refresh model output for 7PM EST

Tuesday – with the cold front passing through tonight, temperatures will moderate tomorrow, dropping into the upper 40s under mostly clear skies.

Wednesday – a complex and potent storm system that will be impacting the Midwest the next couple days will make its way into the region Wednesday. A warm front will pass over our area prior to the passage of a cold front. As we enter the warm sector between these two frontal boundaries, we’ll see a surge of warm air and moisture from the south. This may even lead to a couple isolated rumbles of thunder during the afternoon. Otherwise, expect mostly cloudy skies with showers throughout the afternoon into the evening hours. High temperatures will be quite warm, again approaching 60ºF – and possibly surpassing this mark.

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Thursday – just like tomorrow, once the cold front above pushes through the area, temperatures will again cool off back into the upper 40s (which is still about 10ºF above normal), and skies will clear.

NYC Weekend Weather – Nov 5, 2015

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The warm trend we’ve enjoyed this week comes to an abrupt halt over the weekend as we return to seasonable highs in the upper-50s. We are due to enjoy a couple more days of much above average warmth beforehand, as we’re now in the warm sector south of a warm front that has pushed through and west of a cold front due in late Friday and into the overnight hours Saturday.

Rest of today – mostly cloudy with a high in the upper-60s. A slight chance of rain especially later in the afternoon.

Friday – we’ll be firmly within the warm sector tomorrow with a steady southwesterly flow. Warm air will work its way into the area and yield near record-breaking temperatures in the mid-70s, and possibly even warmer if there are any breaks for sun. There will be another chance at rain tomorrow afternoon and evening as the cold front nears and passes through.  noaad2

Saturday – a marked change in sensible weather is on tap for Saturday once the cold front passes through the region. Skies should clear from west to east over the day, but high temperatures will only be in the low-60s.

Sunday – even cooler, with highs only in the mid-50s under sunny skies.

NYC Weather Update – Mar 22, 2015

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This upcoming week will feature some big swings in temperature, with high temperatures increasing steadily up through Thursday, when highs could 60 before a cold front swings through. Following the passage of this cold front, we dip back into the mid-40s and continue cooling into the lower-40s this weekend. The temperature trend in the medium term remains below normal, potentially well below normal even through the first week of April, as a series of cold fronts continue to allow cold Canadian air to enter the area.

Monday – an area of high pressure will yield a sparkling sunny day, but will also permit cold, Arctic air back into the region. Northwest winds combined with noticeably cold overnight lows will produce uncomfortably cold conditions. High temperatures Monday may barely break freezing. It’ll be one of the coldest day we’ve had this month.

Tuesday – also gets off to a chilly start, but high temperatures are expected to push up to around 40 (which is more than 10ºF colder than normal).

Wednesday – a clear start, but clouds will be building ahead of a warm front that will pass over the region late Wednesday. Temperatures will steadily climb to near 50, especially after the warm front passes. There will be a slight chance for rain later Wednesday in conjunction with this frontal passage.

Thursday – highs will near if not break 60, however, it is anticipated to be a overcast day with periods of rain possible throughout the day. After the warm front passes Wednesday, we’ll be firmly within the warm sector, between the warm front to our east and the approaching cold front from the west. This setup favors the influx of warm, moist air from the Gulf riding in on persistent southwesterly winds, before a dramatic shift following the cold front passing, with winds becoming west-northwest and a drop in temperatures.9khwbg_conus

 

Friday – high temperatures drop back in to the mid-40s, as clouds break apart and colder, dry air takes hold behind the cold front.

Below Normal Start to April

It’s close to a sure bet (70% probability) that we’ll end the month of March and start April with below normal temperatures, taking a look at the Climate Prediction Centers forecasts below. I know we’re all sick of this seemingly endless winter, but we’re still not out of the woods in terms of temperatures.

6-10 temperature outlook from the Climate Prediction Center
6-10 temperature outlook from the Climate Prediction Center
8-14 temperature outlook from the Climate Prediction Center
8-14 temperature outlook from the Climate Prediction Center

 

NYC Weekend Weather – Nov 20, 2014

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We got a break from the arctic chill briefly today, but temperatures will fall again for Friday as a cold front currently sitting on top of us passes through. High pressure builds in Friday allowing for sunny conditions, but temperatures will still not be that warm. A big warm up is in store for the second half of the weekend and we could be hitting a rainy low-mid 60s by Monday.

Friday – following the passage of a cold front sitting over us now, skies will clear up overnight tonight and allow for excellent radiational cooling, so low temperatures will be generally in the upper 20s in the city. High pressure works its way in Friday, but with the influence of a cool west wind, the high temperature will probably still only be near 40.

Saturday – another nice day, with plenty of sun, and temperatures will be slightly warmer in the mid-40s, but the big warm up won’t occur until Sunday.

Sunday – a low pressure center with its origins over the Texas Panhandle will be moving northeast towards our area. A warm front will rotate around in front of it, allowing for the influx of a comparatively very warm and moist airmass into the area. The chance of rain will increase steadily along with cloud cover throughout the day Sunday such that by the late evening, showers will be likely. High temperatures should be in the mid-50s.

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Significant warm up ahead for the latter half of the weekend going into early next week

Monday – as the forecast map from the Weather Prediction Center below shows, the low pressure system from the map above is forecast to intensify significantly as it pulls northeast. This is a classic, mature mid-latitude cyclone with an occluded low and front (purple line extending from the center of the low), a cold front, and a warm front. The warm front will rotate through first, allowing us to get into the warm sector, where there will be plenty of energy and moisture for rain, which could occur in periods throughout Monday. High temperatures will be balmy in the mid-60s.9khwbg_conus

Thanksgiving Storm?

The chance of a significant Thanksgiving storm is decreasing, though not completely nil. Once the cold front above passes, we’ll see a return to cooler temperatures in the low 50s. It’s worth mentioning that the set up behind the cold should once again favor lake effect snow, so if you’re traveling to any of the usual snow belt areas around the Great Lakes, be prepared.

NYC Nowcast – May 10 @ 2:40PM EST

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A batch of strong showers with some rumbles of thunder is approaching the NYC area. For the remainder of the afternoon and evening, strong to possibly marginally severe thunderstorms may pass through ahead of an advancing cold front. Damaging wind gusts and small hail are the primary threats.

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Otherwise, expect broken clouds to cloudy skies and nice warm afternoon in the upper 70s to low 80s across the area. A line of thunderstorms is likely to fire up again later this afternoon into the evening hours as the cold front actually approaches.

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Atmospheric instability is continuing to increase as we are in the warm sector ahead of the advancing cold front. Low level lapse rates and shear profiles are marginally conducive to the growth of some strong to severe thunderstorms.