Tag Archives: new york city wx

NYC (KLGA) Climatology for February

January 30, 2020Climate, NYCclimatology, cold front, new york city climate, new york city weather, new york city wx, nyc climate, nyc weather, nyc wx, warm front, wind roseLei Zhao

During my time taking classes as part of Penn State University’s Undergraduate Certificate in Weather Forecasting, we were taught that understanding the climatology of the location you are interested in is an important prerequisite for making accurate forecasts. This post continues on this theme, adding a climatology for February.

Other Month’s Climatologies

January
March
April
May
June
July
August
September
October
November
December

Station Basic Information

City Name / Station ID: New York, NY (LaGuardia Airport – KLGA)

Local Geography and Topography

Station Elevation: 10 feet above sea level.

Station Location: LaGuardia Airport (KLGA) is situated on the north shore of Queens along the East River, approximately 6 miles east-northeast of Midtown Manhattan.

KLGA’s location within the broader NYC area, as seen in a Google Maps terrain view

Important Topographical Features: New York City is located in the extreme southeastern corner of New York State, bordering suburban New Jersey and Connecticut. These suburban regions combined with those in Long Island comprise the Greater New York City Metropolitan Area, which is the most populous urban agglomeration in the United States and one of the populous urbanized areas in the world with an estimated population of 18 million. New York City itself sprawls across the coastal plain around the Hudson River estuary. The terminal moraine formed by glaciers of the last Ice Age result in a ridge of higher terrain that cuts a swath from southwest to northeast across the boroughs from northern Staten Island, northern Brooklyn, southwestern through central and northeastern Queens. Otherwise, the city itself is low lying. This ridge varies in height between 200-400 feet, rising sharply from south to north, but tapering more gently north. North and west of the city (about 30-50 miles away), lie significant elevations of the Catskills (north), Poconos (west), Taconics that are part of the broader Appalachian Mountain Range. The elevations of the lower foothills can range from 1000-1500 feet. Some of the elevations in the Poconos and Catskills, west and north of KLGA respectively, peak between 2000-3000 feet. The open expanse of the Atlantic Ocean lies south of KLGA and New York City. Long Island Sound also lies east-northeast. The vast urbanized area of the NYC metropolitan region has significant effects on local microclimates via differential heating (urban heat island effect). KLGA is in a low-lying area sensitive to UHI effects and marine influences.

Per the Local Climatological Data report from the National Weather Service:

On winter mornings, ocean temperatures which are warm relative to the land reinforce the effect of the city heat island and low temperatures are often 10-20 degrees lower in the inland suburbs than in the central city. The relatively warm water temperatures also delay the advent of winter snows. Conversely, the lag in warming of water temperatures keeps spring temperatures relatively cool. One year-round measure of the ocean influence is the small average daily variation in temperature.
National Weather Service – NYC Office

Wind Patterns

Below is a wind rose – you can read more about how to interpret this chart here.

Frequency (percentage) of the single most common wind direction: Due northwest (14.25%), same as with January.

Directions that are most and least common: Other most common wind directions include west-northwest (11.25%), due northeast (10.5%), and north-northeast (9.5%). Least common wind directions are east-southeast (0.5%), due east (1%), and south-southeast (1.25%).

Direction(s) most likely to produce the fastest winds: As is the case with other cold weather months, winds in excess of 21.4 knots (~25 mph) are most frequently found coming from due northwest. West-northwest, north-northwest, and due northeast winds can also produce winds over 21.4 knots though less frequently.

Direction(s) least likely to produce the fastest winds: As is the case with several other months, the least common wind directions of due east, east-southeast, and due southeast also rarely seen winds in excess of 16.4 knots.

Impacts of wind direction on local weather: February wind patterns are remarkably similar to January. Winds from the northwestern quadrant remain prominent. These directions also continue to produce the strongest winds. Interestingly, due northeast winds pick up in frequency in February compared to January.

Northwesterly winds bring cooler, drier Canadian air into the region following cold fronts. Winds from this direction also occur on the backside of departing coastal lows. Winds from these directions downslope coming off the higher terrain of the Catskills, and Poconos outside of the city. This can sometimes lead to warmer temperatures than would normally be expected for this wind direction as well as faster wind speeds. As with other months, northeasterly winds are usually related to backdoor cold fronts sweeping from the Canadian Maritimes, the onshore flow ahead of an advancing warm front, or a passing coastal storm to the south.

Maximum observed two-minute wind speed for the month: 39 knots (46 mph).

Temperature and Precipitation Averages/Records

Temperature units are in Fahrenheit and precipitation is in inches.

Worth noting: February average high and low temperatures start the a slow upward trend that will carry through to the spring and summer. Amazingly, record high temperatures in February can top 70°F, even nearing 80°F.

Date	Normal High	Normal Low	Record High	Record Low	Record Lowest Max	Record Highest Min	Normal Precip	Record Precip
1	40	27	66	3	14	50	0.10	1.59
2	40	27	59	-1	18	40	0.09	1.75
3	40	27	64	1	16	45	0.10	1.08
4	40	27	68	10	18	48	0.10	1.72
5	40	27	70	6	17	49	0.09	1.18
6	41	27	69	4	20	41	0.10	1.51
7	41	27	58	5	20	41	0.09	2.89
8	41	28	62	-2	21	47	0.10	0.80
9	41	28	62	7	19	42	0.09	1.82
10	41	28	60	4	17	42	0.09	1.67
11	41	28	63	2	13	45	0.10	1.32
12	42	28	63	4	15	45	0.09	1.59
13	42	28	65	8	15	40	0.09	2.19
14	42	28	60	1	15	43	0.09	1.00
15	42	29	74	-7	17	47	0.10	1.57
16	42	29	69	2	17	45	0.10	1.02
17	43	29	66	2	11	46	0.10	0.94
18	43	29	67	0	14	48	0.10	1.67
19	43	29	66	9	25	53	0.10	1.70
20	43	29	70	3	20	47	0.09	1.50
21	43	29	79	6	20	50	0.10	1.65
22	44	30	70	9	19	45	0.11	1.60
23	44	30	66	8	26	54	0.10	0.90
24	44	30	73	6	25	51	0.11	1.70
25	44	30	68	12	22	49	0.11	1.49
26	45	30	62	9	22	47	0.10	1.04
27	45	30	73	9	21	50	0.11	1.79
28	45	31	66	10	24	47	0.11	1.56
29	–	–	67	12	23	42	–	0.64
Range	40-45	27-31	52-79	-7-12	11-26	40-54	0.09-0.11	0.80-2.89

NYC Weather Update – Jan 7, 2020

January 7, 2020NYC, Rain, Snow, Weather Updatearctic front, high pressure, new york city weather, new york city wx, nyc weather, nyc wx, rain, snowLei Zhao

A quick hitting storm system brings possible light snow to the region overnight into Wednesday. High pressure builds behind this storm, with winds shifting to the northwest bringing a cool down midweek. Another storm approaches towards the end of the week. Ahead of this, temperatures surge back above normal, approaching 60°F, as southwesterly winds instigate warm air advection.

Rest of today – increasing clouds with high temperatures in the mid-40s. A coastal low passes east of the area, bringing some potential for light snow accumulations (1″ or so). Precipitation will start off as rain, though, then transition to snow briefly overnight. Overnight lows drop to around 30°F.

Weather Prediction Center surface forecast for 7PM Tuesday

Wednesday – snowfall may be enhanced by a second fast-moving arctic front. Behind this front, high pressure builds. Decreasing clouds, with winds picking up from the west then veering northwest towards overnight hours. High temperatures in the low-40s. Overnight lows will plummet quickly into the upper-20s with an Arctic air mass and northwesterly flow. Winds may gust above 30 mph during the overnight hours.

Thursday – expecting a calm, bright, sunny day with high temperatures in the low-30s, below normal for this time of year. High pressure will be moving right over us during this time. Overnight lows in the low-30s.

GFS model 500 mb height anomalies for 1AM Friday. Note the strong positive height anomaly over the Northeast, with a corresponding strong negative height anomaly over the Rockies.

Friday – high pressure will move offshore to the east, setting up warm southwesterly return flow between the western periphery of the high and an incoming storm system. High temperatures expected in the upper-40s. Temperatures should in fact warm up overnight, through the upper-40s.

NYC (KLGA) Climatology for January

January 2, 2020Climate, NYCclimatology, cold front, new york city climate, new york city weather, new york city wx, nyc climate, nyc weather, nyc wx, warm front, wind roseLei Zhao

Other Month’s Climatologies

February
March
April
May
June
July
August
September
October
November
December

Station Basic Information

City Name / Station ID: New York, NY (LaGuardia Airport – KLGA)

Local Geography and Topography

Station Elevation: 10 feet above sea level.

Station Location: LaGuardia Airport (KLGA) is situated on the north shore of Queens along the East River, approximately 6 miles east-northeast of Midtown Manhattan.

Per the Local Climatological Data report from the National Weather Service:

On winter mornings, ocean temperatures which are warm relative to the land reinforce the effect of the city heat island and low temperatures are often 10-20 degrees lower in the inland suburbs than in the central city. The relatively warm water temperatures also delay the advent of winter snows. Conversely, the lag in warming of water temperatures keeps spring temperatures relatively cool. One year-round measure of the ocean influence is the small average daily variation in temperature.
National Weather Service – NYC Office

Wind Patterns

Below is a wind rose – you can read more about how to interpret this chart here.

Frequency (percentage) of the single most common wind direction: Due northwest (14.25%).

Directions that are most and least common: Other most common wind directions include west-northwest (13.5%), due west (11%), and due northeast (8.25%). Least common wind directions are east-southeast and due southeast (0.5%), and south-southeast (1.5%).

Direction(s) most likely to produce the fastest winds: As is the case with other cold weather months, winds in excess of 21.4 knots (~25 mph) are most frequently found coming from due northwest. Due west, west-northwest, north-northwest, and due northeast winds can also produce winds over 21.4 knots though less frequently.

Impacts of wind direction on local weather: January’s winds build on a pattern first seen in November, where winds from the northwestern quadrant become prominent. January wind patterns are nearly identical to December, with winds from due west to northwest being very common. These wind directions also continue to produce the fastest winds most often.

Maximum observed two-minute wind speed for the month: 39 knots (46 mph).

Temperature and Precipitation Averages/Records

Temperature units are in Fahrenheit and precipitation is in inches.

Worth noting: January average temperatures for both high and lows start to bottom out, and there’s only a small range in these figures.

Date	Normal High	Normal Low	Record High	Record Low	Record Lowest Max	Record Highest Min	Normal Precip	Record Precip
1	40	28	60	8	19	52	0.10	1.33
2	40	28	60	9	23	43	0.10	1.52
3	40	28	63	10	17	47	0.11	2.53
4	40	27	66	4	13	57	0.10	2.02
5	40	27	64	9	20	51	0.10	1.25
6	40	27	72	8	15	55	0.11	1.56
7	39	27	62	4	18	49	0.10	1.13
8	39	27	64	3	13	52	0.10	1.19
9	39	27	66	1	14	49	0.11	0.79
10	39	27	59	2	16	43	0.10	1.42
11	39	26	62	4	15	44	0.11	1.34
12	39	26	68	1	12	48	0.11	0.97
13	39	26	63	4	18	46	0.10	1.23
14	39	26	64	7	18	45	0.11	2.04
15	39	26	62	0	14	55	0.11	0.88
16	39	26	59	2	14	52	0.10	1.74
17	39	26	59	-1	9	45	0.11	1.20
18	39	26	64	0	12	44	0.10	1.98
19	39	26	64	-3	9	41	0.10	0.76
20	39	26	61	0	14	42	0.10	1.41
21	39	26	64	-3	8	42	0.10	3.13
22	39	26	57	5	16	43	0.10	1.25
23	39	26	62	3	15	47	0.10	2.60
24	39	26	68	3	18	54	0.10	1.48
25	39	26	57	2	15	47	0.10	1.43
26	39	26	72	5	18	45	0.09	2.40
27	39	26	66	0	18	44	0.10	1.93
28	40	27	60	7	20	45	0.09	1.55
29	40	27	68	2	13	50	0.11	0.80
30	40	27	63	4	19	44	0.10	0.79
31	40	27	61	2	17	41	0.10	0.88
Range	39-40	26-28	57-72	-3-10	8-23	41-57	0.09-0.11	0.76-3.13

NYC Weather Update – Dec 17, 2019

December 17, 2019NYC, Rain, Snow, Weather Updatearctic front, high pressure, new york city weather, new york city wx, nyc weather, nyc wx, rain, snow, snow squallLei Zhao

A soggy and messy start to the week will give way to a blast of Arctic air, leading to an extended period of below normal high temperatures only in the 30s for the most part. Temperatures do look to rebound over the weekend towards more seasonable levels. The next chance for precipitation happens Wednesday as an arctic front, harbinger of these much colder temperatures, crosses the area and brings possible snow squalls.

Rest of today – periods of rain during the day with high temperatures in the mid-30s. Rain tapers off and ends early this evening as the low pressure responsible for the stormy conditions moves off to the east. Overnight lows drop to around 30°F.

GFS model 500 mb height anomalies for Wednesday at 7PM, note the strong negative height anomaly over the Northeastern US and St. Lawrence Valley

Wednesday – should be a mostly sunny day, though as an arctic front hits us late in the day and in the early evening, a few snow squalls/snow bands could hit. These would be brief in nature but could impinge on visibility, making travel difficult. High temperatures should be similar to today in the mid-30s. Overnight lows will plummet quickly into the upper-teens with an Arctic air mass and northwesterly flow.

Thursday – northwesterly flow continues as strong Arctic high pressure builds. This will keep temperatures only in the upper-20s for highs under mostly sunny skies. Overnight lows in the low-20s.

Weather Prediction Center surface forecast for 7AM Friday

Friday – temperatures moderate a little bit, with highs in the low-30s as the high starts moving east. Overnight lows in the low-20s.

NYC Weather Update – Dec 10, 2019

December 10, 2019NYC, Weather Updatehigh pressure, new york city weather, new york city wx, nyc weather, nyc wx, rain, snowLei Zhao

Very mild air at the start of the week gives way to a much colder air mass as a cold front finally sweeps through later today. Drenching rains from yesterday should give way to lighter precipitation today, however, with temperatures dropping we could see some light accumulating snow by Wednesday morning. Temperatures will rebound into normal to above normal ranges after a dip into high temperatures in the 30s mid-week.

Rest of today – mostly cloudy with high temperatures peaking in the upper-50s. Long duration southerly flow ahead of an slow moving cold front has brought in a much warmer air mass to the region. Rain chances pick up in the afternoon with the front nearing and continues into the overnight hours with a couple breaks. Behind this front, much colder air rushes in with overnight lows dropping to near freezing. With precipitation continuing, this should allow for a transition to all snow. Light accumulation of around 1″ is possible, though not a lock since the ground has been quite warm for a couple days now with all the rain.

Weather Prediction Center probabilistic forecast for 1″+ accumulation of snow by 7AM Wednesday

Wednesday – snow winding down in the morning. High temperatures in the upper-30s, about 10°F below normal for this time of year. Skies clearing later in the day with overnight lows in the mid-20s.

Thursday – with a chilly start to the day, high temperatures will have a tough time getting out of the low-30s. Mostly sunny otherwise. Overnight lows in the upper-20s.

Friday – high pressure that fills in behind the cold front passing Tuesday and giving us the sunny weather Thursday eventually moves off to the northeast. Onshore flow should help moderate highs into the upper-40s. Rain chances increase with the next storm system – a possible coastal low – moving up overnight. Overnight lows in the mid-40s.

NYC (KLGA) Climatology for December

December 3, 2019Climate, NYCclimatology, cold front, new york city climate, new york city weather, new york city wx, nyc climate, nyc weather, nyc wx, warm front, wind roseLei Zhao

Other Month’s Climatologies

January
February
March
April
May
June
July
August
September
November

Station Basic Information

City Name / Station ID: New York, NY (LaGuardia Airport – KLGA)

Local Geography and Topography

Station Elevation: 10 feet above sea level.

Station Location: LaGuardia Airport (KLGA) is situated on the north shore of Queens along the East River, approximately 6 miles east-northeast of Midtown Manhattan.

Per the Local Climatological Data report from the National Weather Service:

On winter mornings, ocean temperatures which are warm relative to the land reinforce the effect of the city heat island and low temperatures are often 10-20 degrees lower in the inland suburbs than in the central city. The relatively warm water temperatures also delay the advent of winter snows. Conversely, the lag in warming of water temperatures keeps spring temperatures relatively cool. One year-round measure of the ocean influence is the small average daily variation in temperature.
National Weather Service – NYC Office

Wind Patterns

Below is a wind rose – you can read more about how to interpret this chart here.

Frequency (percentage) of the single most common wind direction: West-northwest (13.75%).

Directions that are most and least common: Other most common wind directions include due northwest (13.5%), due west (11%), and due southwest (8%). Least common wind directions are east-southeast (1%), due southeast (1.25%), and south-southeast (1.5%).

Direction(s) most likely to produce the fastest winds: As is the case with November, winds in excess of 21.4 knots (~25 mph) are most frequently found coming from due northwest. West-northwest, north-northwest, due northeast winds can also produce winds over 21.4 knots though less frequently.

Impacts of wind direction on local weather: December’s winds build on a pattern first seen in November, where winds from the northwestern quadrant become prominent. In December, winds from due west to northwest become markedly more common, while the frequency of winds from the southwesterly quadrant continues to decrease. In addition, the frequency of winds in excess of ~25 mph (21.4 knots) from the northwesterly quadrant also increases.

Maximum observed two-minute wind speed for the month: 38 knots (44 mph).

Temperature and Precipitation Averages/Records

Temperature units are in Fahrenheit and precipitation is in inches.

Worth noting: December average high temperatures drop into the 40s. It’s the first month of the winter where record lows have historically dipped below 0°F at times.

Date	Normal High	Normal Low	Record High	Record Low	Record Lowest Max	Record Highest Min	Normal Precip	Record Precip
1	49	37	71	19	29	54	0.12	1.29
2	49	37	66	17	32	51	0.13	2.22
3	48	36	69	11	23	54	0.13	1.48
4	48	36	74	12	27	59	0.12	1.76
5	48	36	69	21	32	56	0.13	1.38
6	47	35	72	18	25	58	0.12	1.29
7	47	35	75	17	28	50	0.12	1.39
8	47	35	64	18	26	52	0.12	0.94
9	46	34	66	13	27	52	0.13	2.68
10	46	34	70	9	22	53	0.12	0.96
11	46	34	67	14	24	49	0.12	2.74
12	45	33	66	8	19	53	0.12	1.32
13	45	33	63	8	20	53	0.12	3.65
14	45	33	64	12	24	51	0.11	1.75
15	44	32	67	15	26	52	0.12	1.18
16	44	32	62	13	21	47	0.11	2.39
17	44	32	61	9	21	50	0.11	1.29
18	43	31	62	16	25	47	0.11	1.29
19	43	31	57	14	23	47	0.11	1.31
20	43	31	61	-2	16	54	0.11	1.07
21	43	30	62	-1	17	50	0.11	1.92
22	42	30	69	8	17	56	0.11	1.59
23	42	30	66	7	19	54	0.11	1.45
24	42	30	72	4	21	59	0.12	1.27
25	42	29	64	-1	10	54	0.11	1.27
26	41	29	62	5	17	47	0.11	2.62
27	41	29	63	9	20	54	0.11	1.17
28	41	29	65	12	19	47	0.10	1.25
29	41	28	68	12	22	54	0.10	1.26
30	41	28	63	3	21	48	0.10	1.56
31	40	28	63	3	13	50	0.10	1.31
Range	41-49	28-37	57-75	-2-21	10-32	47-59	0.10-0.13	0.94-3.65

NYC Weather Update – Dec 3, 2019

December 3, 2019NYC, Weather Updatearctic front, low pressure, new york city weather, new york city wx, nyc weather, nyc wxLei Zhao

A quiet, though colder than normal week lies ahead after the departure of Monday’s storm. This storm ended up not bringing the city much of any accumulating snow, though the story was quite different further north. High pressure settles in briefly before a weaker disturbance affects the area later in the week. An arctic front passes Friday, bringing a reinforcing shot of cold. Temperatures during this time will range in the low-40s.

Rest of today – mostly sunny with high temperatures in the low-40s. Winds diminishing as the low that hit us yesterday continues to pull away to the northeast. Overnight lows around the freezing mark.

Weather Prediction Center surface forecast for 7PM Wednesday

Wednesday – partly sunny with high temperatures in the low-40s. Overnight lows in the mid-30s.

Thursday – mostly sunny with high temperatures in the low-40s, and overnight lows in the low-30s.

Climate Prediction Center temperature outlook for next week. A warm up is coming after this week of below normal cold.

Friday – mostly sunny with high temperatures in the low-40s and overnight lows in the mid-20s behind the passage of a dry Arctic front.

NYC Weather Update – Nov 25, 2019

November 25, 2019NYC, Rain, Weather Updatecold front, low pressure, new york city thanksgiving weather, new york city weather, new york city wx, nyc weather, nyc wx, rain, thanksgiving weatherLei Zhao

Thanksgiving week starts off with warmer than average temperatures largely in the mid-50s ahead of an approaching storm that should impact the area Wednesday. Behind this storm, temperatures are forecast to drop back into the 40s. Thanksgiving Day will be dry, however, the low responsible for the mid-week storm will deepen as it exits the region, resulting in winds possibly strong enough to ground the Macy’s Thanksgiving Day Parade balloons.

Rest of today – partly sunny with high temperatures in the low-50s. Overnight lows heading down into the low-40s with mostly clear skies overnight.

GFS model 500 mb height anomalies, showing positive anomalies over much of the Northeast on Tuesday

Tuesday – southwesterly flow ahead of an approaching cold front/storm system should allow temperatures to warm into the mid-50s. Overnight lows in the mid-40s.

Wednesday – cloudy with high temperatures in the mid-50s. Chance of showers during the day and into the early overnight hours. Decreasing clouds overnight, with lows in the mid-40s and increasing winds.

GFS model output for 1000-500 mb heights, surface pressure, and precipitation

Thursday – mostly sunny with high temperatures around 50°F, winds should be quite breezy with a tight pressure gradient forming around the deepening and exiting low pressure center. Overnight lows in the mid-30s.

NYC Weather Update – Nov 18, 2019

November 18, 2019Climate, NYC, Rainclimate, coastal low, cold front, low pressure, new york city climate, new york city weather, new york city wx, nyc weather, nyc wx, rainLei Zhao

Spells of rain will bookend what should otherwise be a pleasant week of mostly dry weather. Temperatures will trend slightly below normal for this time of year, however, we will avoid any dramatic swings in temperature. Record cold will not be on the table either. All in all, it should shape up to be a fairly typical mid-November week.

Rest of today – windy, mostly cloudy, with chances for scattered rain showers as a slow moving coastal low continues spinning off of the coast of New England. High temperatures should only hit the mid-40s with the cooling influence of clouds and persistently northeasterly flow. Chances for rain continue overnight with lows dropping into the upper-30s.

Weather Prediction Center surface forecast for 7PM Monday

Tuesday – rain chances should finally end as the coastal low affecting us finally pulls away to the northeast. Clouds should break up leading to a decent day with high temperatures in the low-50s. Overnight lows should be around 40°F.

Wednesday – partly sunny with highs around 50°F. Overnight lows in the mid-30s.

GFS 500 mb height, relative vorticity for 1PM Friday. We can see a distinct shortwave trough approaching from the west. Enhanced vorticity around the base of this trough should help touch of some precipitation at the surface as a cold front sweeps through.

Thursday – best day of the week with high pressure briefly building in. High temperatures again around 50°F, with overnight lows in the mid-40s.

NYC Weather Update – Nov 12, 2019

November 12, 2019Climate, NYC, Rainclimate, cold front, low pressure, new york city climate, new york city weather, new york city wx, nyc weather, nyc wx, rainLei Zhao

Record setting cold is on the way mid-week. Overnight lows in the mid-20s and daytime highs hovering around freezing Wednesday will make this week feel more like January than mid-November. Luckily, this bitter cold snap will be short-lived, with temperatures rebounding back into the 50s by the end of the week.

Rest of today – temperatures will be falling through the 40s during the day. Precipitation should end as an Arctic front pushes through. Temperatures will continue dropping into the 30s throughout the evening and bottoming out in the mid-20s. Precipitation should end before it gets cold enough to produce snow. Winds will become stiff with the parent low strengthening and a tight pressure gradient forming between that and an incoming high pressure center.

Weather Prediction Center surface forecast for 7AM Wednesday

Wednesday – sunny with record low high temperatures in the low-30s as a frigid Arctic air mass takes hold. Overnight lows continue to be cold, in the upper-20s.

Thursday – temperatures start to rebound into the upper-40s as a warm front approaches and we enter the warm sector of the next storm. Return flow around the western edge of the high pressure exiting east will also assist in helping move some warmer air in. Overnight lows in the mid-30s.

GFS model 500 mb temperature, height and wind at 1AM Wednesday, note the closed 500 mb low and the strong troughing over much of the Northeastern US
By 7PM Friday, the 500 mb trough is forecast to have flattened out considerably, allowing for temperatures at this level and at the surface to rebound

Friday – the warm-up continues, with temperatures reaching back into seasonable levels in the low-50s. A moisture starved cold front passes through late bringing overnight lows back down to the low-30s

LZ | Weather

Weather updates & posts for NYC region

Tag Archives: new york city wx

NYC (KLGA) Climatology for February

Other Month’s Climatologies

Station Basic Information

Local Geography and Topography

Wind Patterns

Temperature and Precipitation Averages/Records

NYC Weather Update – Jan 7, 2020

NYC (KLGA) Climatology for January

Other Month’s Climatologies

Station Basic Information

Local Geography and Topography

Wind Patterns

Temperature and Precipitation Averages/Records

NYC Weather Update – Dec 17, 2019

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NYC (KLGA) Climatology for December

Other Month’s Climatologies

Station Basic Information

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NYC Weather Update – Dec 3, 2019

NYC Weather Update – Nov 25, 2019

NYC Weather Update – Nov 18, 2019

NYC Weather Update – Nov 12, 2019