Monthly Archives: September 2015

NYC Weekend Weather – Sept 25, 2015

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Missed a couple updates the last week or so. The weather has been fairly uneventful during this stretch, with the second week of September featuring much above temperatures, while this past week has been more seasonable with respect to temperatures. This weekend, the pleasant, fall-like weather continues, with Saturday being the better half of the weekend.

Rest of today – high clouds have decreased in coverage somewhat since earlier this morning, but with an area of low pressure off the Southeastern US edging northward, cloud coverage may increase again later today. There’s also an onshore flow pattern with wind coming from the northeast, which will keep high temperatures suppressed in the low-70s.

Saturday – Canadian high pressure builds north of us, keeping the area of disturbed weather that’s moving northward from the Southeast at bay. This should result in a mostly sunny day. However, with the high pressure center to the north, onshore winds will continue from the northeast, leading to high temperatures again only in the low-70s.

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Sunday – the high pressure above will move southeast offshore of New England by the end of the day Sunday. With the high out of the way, the low pressure to its south will be able to develop again. This should yield a mostly cloudy day with the possibility for rain later in the evening hours. High temperatures remain on the cool side in the low-70s.

Monday – the chance for rain increases Monday with the high pressure completely out of the picture and low pressure moving in. This rain is much needed as a moderate drought persists in the NYC region (in particular Long Island). High temperatures will be warmer with winds from the southwest, temperatures may approach 80.gfs_namer_066_1000_850_thick

Regional Drought Worsens

The tradeoff for the long stretch of dry and pleasant weather is that moderate drought conditions have returned to areas which had been close to being drought-free last month. Moderate drought has redeveloped over much of the NYC metro area, while a persistent drought has continued to affect eastern Long Island. In fact, since August, the percentage of New York State affected by moderate drought has more than doubled.

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NYC Weather Update – Sept 14, 2015

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This is going to be an uneventful week in terms of weather. High pressure dominates through out the period, leading to dry, sunny conditions every day, with the only variation being a warming trend after Tuesday.

Rest of today – gorgeous, fall-like day with high temperatures only topping out in the low-mid 70s. A breezy west wind will make it feel even more like autumn.

Tuesday – warmer, with high temperatures in the low-80s under sunny skies.

Wednesday – warmer still with high temperatures in the mid-80s.

Thursday – another picture perfect day with plenty of sun and high temperatures in the low-mid 80s.9jhwbg_conus

NYC Weekend Weather – Sept 10, 2015

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Some much needed rain is falling today, with another round of rain coming this weekend. Friday and Saturday look to be the best days out of the stretch, while Sunday has the best chances for rain. The tradeoff for this wet weather will be noticeably less humid, cooler, and more seasonable conditions to start off next week.

Rest of today – we are currently in a dry pocket which should last through the late afternoon hours. The cold front that is initiating these showers and scattered thunderstorms will be slow to move through. A low pressure center that is riding along the frontal boundary is currently parked over us, and as this low continues to move off to the northeast, additional rain is expected develop and wrap around the backside of the low. With this low and the front lingering, we will likely get another round of widespread showers with some heavy downpours possible again later this evening and into the overnight hours. With the rain and cloud cover, highs will only reach the upper-70s before dropping back down.

Friday – once the low pressure and cold front have passed, conditions should begin to improve quickly. There’s a lingering chance for showers in the morning, but by the afternoon hours skies should be clearing with high temperatures around 80.

Saturday – another cold front and low pressure will follow on the heels of today’s system. The timing of precipitation with this system appears to be trending towards late Saturday evening, and primarily overnight into Sunday. This should allow for a mostly sunny day with temperatures again around 80.

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Sunday – showers appear to be likely on Sunday, with an isolated thunderstorm possible as well. High temperatures will be in the upper-70s with the clouds and rain.

Monday – once the storm system passes on Sunday, high pressure building to our southwest will allow cool, dry air from Canada to flow into the area, resulting in temperatures again in the upper-70s, but with mostly clear skies.

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NYC Weather Update – Sept 8, 2015

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Another steamy beginning to week is following on the heels of Labor Day. Today and Wednesday are both days when the temperature could top 90ºF. By Thursday, a strong cold front moves through, bringing the potential for much needed rain and cooling things off considerably for the end of the week.

Rest of today – sunny, hot and humid, high temperatures in the low-mid 90s in the city. Humidity remains just low enough to obviate the need for any excessive heat watches/warnings.

Wednesday – increasing clouds from west to east on Wednesday ahead of an approaching cold front. Temperatures remain warm ahead of the front, generally in the upper-80s with maybe a couple spots topping 90. There could be a few pop up showers and thunderstorms later in the afternoon, perhaps along a sea breeze front in Brooklyn/Queens.

Thursday – widespread showers and thunderstorms will be the order of the day, with cooler temperatures in the low-80s and cloudy conditions. Periods of showers and thunderstorms could persist for extended periods of time, bringing the potential for flash flooding in some locations. Rain ends from west to east gradually during the overnight hours.

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NYC Labor Day Weekend Weather – Sept 3, 2015

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The holiday weekend opens up with a break in the heat, but the relief doesn’t last long before the heat gets turned back on in time for Labor Day itself. We get a chance for a few scattered thunderstorms overnight tonight. Otherwise, dry conditions prevail over the medium to long term.

Rest of today – hot and humid with highs in the low-90s under hazy and cloudy skies.

Friday – a cold front forecast to pass through the area from the north tonight could touch off only a few scattered thunderstorms, since conditions are unfavorable for widespread coverage. The day starts off overcast but as cooler, relatively drier air moves in behind the cold front, skies should begin to clear from east to west. High temperatures will be significantly cooler in the low-80s.

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Saturday – the break in the heat gives us probably the best day of the weekend with comfortable high temperatures in the low-80s and lower humidity along with plenty of sun. This is due to high pressure building over the area.

Sunday – as the high pressure moves offshore and southeast, it allows a warmer, more humid tropical airmass back into the region, heralding a return to very similar weather conditions as what we’ve experienced this week. Highs will climb back up into the upper-80s under sunny skies.

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Labor Day (Monday) – the heat and humidity persists, giving the Caribbean Day Parade an appropriately tropical feel. Temperatures should again reach into the upper-80s with mostly sunny skies.