Our global temperature continued its upward trend last month with April 2017 marking the second warmest April ever recorded on this planet. Only April 2016 was warmer.
According to the state of the climate report by NOAA’s National Centers for Environmental Information, Earth’s combined average temperature for the month – over both land and sea surfaces – was 58.32°F. That is a staggering 1.62°F above the 20th-century average. April was also the 388th consecutive month with a global temperature above its long-term norm. That means the last time any month posted a below average reading was December 1984.
While heat dominated most of the planet in April, some places were particularly warm, including Asia, Alaska, and the eastern United States. For the contiguous US as a whole, it was the 11th warmest April on NOAA’s books.
These soaring temperatures are largely attributed to the long-term trend of human-caused climate change. ENSO-neutral conditions prevailed in April, which means there was neither an El Niño nor a La Niña to influence global weather patterns.
Year to date, the first four months of 2017 were the second warmest such period of any year on record. Global temperature records date back to 1880.
April 2017 was Earth’s second warmest April on Record. Credit: NOAA
The calendar says May, but it felt more like July in New York City on Thursday. The temperature in Central Park soared to 92°F, setting a new record high for the date. The previous record of 90°F had been in place since 1936.
Wednesday was also a scorcher, producing the Big Apple’s first 90-degree day of the season. The normal high in NYC at this time of year is 71°F.
These dramatic temperatures are the result of a Bermuda High, a large area of high pressure situated off the mid-Atlantic coast. Spinning clockwise, it has been funneling very warm air from the Gulf of Mexico toward the northeast.
This type of heat can lead to the formation of ground-level ozone, which is why an air quality advisory was issued for the area. Anyone with repository concerns, like asthma, was advised to stay indoors.
While these temperatures are unseasonable, the city has seen 90° readings arrive even earlier. The earliest, according to NWS records, was April 7, 2010, when the mercury climbed to a sweltering 92°F.
If you are not quite ready for summer, fear not. Conditions more typical of May are expected to return this weekend.
Weather Whiplash for NYC. Credit: The Weather Gamut
It was a thrill to be asked back to The Weather Channel’s WUTV show on Friday. As a New York City-based contributor to their PWS network, we discussed the record rainfall that swept through the city and the numerous flooding situations it caused.
The show, which dives into the science behind different weather events, airs weeknights from 6 to 8 PM EST on The Weather Channel.
Weather Gamut writer, Melissa Fleming, talks about record rainfall in NYC on WUTV. May 5, 2017. Credit: TWC and Melissa Fleming.
An intense rainstorm swept through New York City on Friday afternoon. With bands of heavy downpours, it unleashed more than half a month’s worth of rain in just a few hours.
According to the NWS, 3.02 inches of rain was measured in Central Park, setting a new record for the date. The previous record of 1.55 inches had been in place since 1871. On average, the Big Apple gets 4.19 inches of rain for the entire month of May.
The heavy rain disrupted travel across the city, with flash flood warnings issued in all five boroughs. Significant delays and cancellations were also reported at the area’s airports.
This type of heavy rain event, according to NOAA, is expected to become more common in the northeast as global temperatures rise and precipitation patterns change.
Flooding on NYC’s West Side Highway. Credit: New York Patch
Transitioning to spring, April was a month of wild temperature swings in New York City. We had highs that ranged from a chilly 48°F to a summer-like 87°F. However, with 19 out of 30 days posting above average readings, the warmth won out in the end.
The city’s mean temperature for the month was 57.2°F, which is a whopping 4.2°F above the long-term norm. That makes April 2017 the Big Apple’s second warmest April on record. Only April 2010 was warmer.
In terms of precipitation, April’s famous showers were slightly below normal with 3.84 inches of rain measured in Central Park. But of this total, the vast majority (74%) came down on three different, but very wet, days. The city usually sees 4.50 inches of rain for the month.
Credit: The Weather Gamut
Our global temperature continued its upward trend last month with March 2017 marking the second warmest March ever recorded on this planet. Only March 2016 was warmer.
According to the state of the climate report by NOAA’s National Centers for Environmental Information, Earth’s combined average temperature for the month – over both land and sea surfaces – was 56.79°F. That is a whopping 1.89°F above the 20th-century average. March was also the 387th consecutive month with a global temperature above its long-term norm. That means the last time any month posted a below average reading was December 1984.
While heat dominated most of the planet in March, some places were particularly warm, including the United States, Europe, and Russia. For the contiguous US, despite the cool conditions in the northeast, it was the 9th warmest March on NOAA’s books.
These soaring temperatures are largely attributed to the long-term trend of human-caused climate change. In fact, March 2017 marked the first time a monthly temperature departure from average surpassed 1.8°F (1.0°C) in the absence of an El Niño event.
Year to date, the first quarter of 2017 was the second warmest such period of any year on record. Global temperature records date back to 1880.
The calendar said Easter, but it felt more like the Fourth of July in New York City on Sunday. The temperature in Central Park soared to a sweltering 87°F, which is a staggering 25°F above average.
According to the NWS, this was the second hottest Easter on record for the Big Apple. The warmest was April 18, 1976, when the temperature hit 96°F. Unlike Christmas, Easter falls on a slightly different date every year. It is the first Sunday after the first full moon that occurs after the spring equinox.
While the heat was not ideal for the holiday’s famous chocolate eggs, the city’s parks were filled with people enjoying the warm weather. However, if you are not quite ready for summer, fear not. More spring–like conditions are expected to return this week.
Our global temperature continued its upward trend last month with February 2017 marking not only the second warmest February on record but also closing out the planet’s second warmest meteorological winter.
According to the State of the Climate report by NOAA’s National Centers for Environmental Information, Earth’s combined average temperature for February – over both land and sea surfaces – was 55.66°F, which is 1.76°F above the 20th-century average. Only February 2016 was warmer.
This February also marked the 386th consecutive month with a global temperature above its long-term norm. That means the last time any month posted a below average reading was December 1984.
The three-month period of December, January, and February – meteorological winter in the northern hemisphere – was also unusually warm. NOAA reports that Earth’s average temperature for the season was 1.60°F above the 20th century average of 53.8°F. That makes it the second warmest winter on record, trailing only the 2015-16 season.
While heat dominated most of the planet this winter, some places were particularly warm, including much of North America and Asia. Here in the contiguous US, it was our sixth warmest winter on record.
Coming on the heels of a five-month long La Niña event, which had a modest cooling effect, these soaring temperatures are largely attributed to the long-term trend of human-caused climate change.
Global temperature records date back to 1880.
Winter 2016-17 was Earth’s 2nd warmest winter season on record. Credit: NOAA
February 2017 was the second-warmest February ever recorded in the continental US.
The average temperature of the lower 48 states, according to NOAA’s National Centers of Environmental Information, was 41.2°F. That is a whopping 7.3°F above the 20th-century average and only 0.2°F shy of the record that was set in 1954.
From the Rocky Mountains to the East Coast, thirty-nine states were warmer than normal and sixteen were record warm. Cooler conditions prevailed in the west, but no state in the region was record cold.
Across the country, a substantial number of local temperature records were challenged during the month. In all, 11,743 daily warm records were tied or broken compared to only 418 cold records. Experts say if the weather pattern was “normal”, records events would be unlikely. If it were volatile but balanced, a similar number of record highs and lows would be expected. However, February’s pattern was extremely lopsided.
On a day-to-day basis, these remarkable conditions were driven by a persistent ridge in the jet stream over the eastern US and a trough in the west. That said, the bigger picture of global warming cannot be discounted. According to World Weather Attribution, a partnership of international scientists, “the chances of seeing a February as warm as the one experienced across the Lower 48 has increased more than threefold because of human-caused climate change.”
February also closed out the country’s sixth warmest meteorological winter. Weather records for the contiguous United States date back to 1895.
February 2017 was the second warmest February on record for the US. Credit: NOAA
February 2017 was New York City’s warmest February on record. Its mean temperature of 41.6°F was a staggering 6.3°F above the long-term norm. Moreover, February was the city’s 20th consecutive month with an above-average temperature.
Overall, we had nineteen out of twenty-eight days that were warmer than normal. Seven of those produced readings in the 60s and one even hit 70°F, marking the first time the city has seen that type of heat in February in twenty years. Two record warm minimum temperatures were also set during the month. On February 19th and 24th, the Big Apple only cooled down to 53°F and 58°F respectively. The average low for those dates is 30°F.
While a few warm days in February are not uncommon, this extended pattern of sustained warmth was very unusual. Driven largely by a persistent positive phase of the North Atlantic Oscillation, warm southern air was funneled northward almost continuously throughout the month.
February is usually the city’s snowiest month on the calendar, and this year, despite the unseasonable warmth, it did not disappoint. Central Park received 9.4 inches of snow, which is 0.2 inches above average. All of it fell during a single, quick hitting nor’easter when the air was briefly cold enough to support frozen precipitation.
Rainfall, on the other hand, was not as abundant. Only 2.48 inches was reported, which is 0.61 inches below normal. The city, according to the latest report from the US drought monitor (2/23) remains abnormally dry.
New York City weather records date back to 1869.
Feb 2017 was NYC’s warmest Feb on record and 20th straight month with an above average temperature. Credit: The Weather Gamut.