Earth Posts 5th Warmest February and 4th Warmest Dec-Feb Season on Record

Our global temperature continued its upward trend last month. February 2019 marked not only the fifth warmest February, but also closed out the planet’s fourth warmest December – February season on record.

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 55.32°F, which is 1.42°F above the 20th-century average. This February also marked the 410th 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 1.51°F above the 20th century average of 53.8°F. That makes it the fourth warmest such period on record.

While heat dominated most of the planet this season, some places were particularly warm, including Alaska, Europe, Australia, and parts of Russia and Asia. Here in the contiguous US, this winter ranked among the warmest third of the nation’s 125-year period of record.

Coming on the heels of 2018 – the Earth’s fourth warmest year on record – these soaring temperatures are largely attributed to the long-term trend of human-caused climate change. Global temperature records date back to 1880.

Credit: NOAA

A Spring Preview Melts March Snow in NYC

The calendar says March, but it felt more like May in New York City on Friday.

The temperature soared to 75°F in Central Park, missing the record high by just 2°F. But, with the mercury only dropping to 49°F at night, it did tie the record warm low temperature for the date that was set in 1913.

The normal high and low temperatures for this time of year in NYC are 49°F and 35°F, respectively.

With below normal temperatures dominating the beginning of March, this sudden warm up felt like weather whiplash. Just a week earlier, there was snow on the ground with snowmen dotting the landscape in parks across the city.

But, as with most things that go up, they must also come back down. Cooler conditions are expected to return over the weekend.

What a difference a week can bring: the same snowman in Central Park one week apart. Credit: Melissa Fleming

 

Flashback Facts: NYC’s Great Blizzard of 1888

On this day in 1888, one of the worst snowstorms on record hit New York City. Here is a look back at some of the facts from that historic storm.

Snow fills the street and sidewalk on Park Place in Brooklyn, after the Blizzard of 1888. Credit: NOAA.

  • 21 inches of snow was measured in Central Park, the 4th largest snowstorm on record for the city
  • Wind gusts reached 80mph, causing blizzard conditions
  • Snowdrifts reached as high as 30 feet in parts of the city.
  • The storm shut down transportation systems and left people confined to their homes for days.
  • It took NYC 14 days to fully recover from the storm.
  • As result of the paralyzing impacts of this blizzard, the city moved all overhead wires underground.

Source: NOAA

2018: Fourth Warmest Year on Record for Planet

Its official, 2018 was the fourth warmest year ever recorded on this planet. Only 2015, 2016, and 2017 were warmer.

According to a report by NOAA’s National Centers for Environmental Information, Earth’s combined average temperature for the year – over both land and sea surfaces – was 58.42°F. That is 1.42°F above the 20th-century average.

2018 also marked the 42nd consecutive year with a global temperature above its long-term norm. That means every year since 1976 has posted a warmer than average annual temperature.

While heat dominated most of the planet last year, some places were particularly warm. Record heat was measured across much of Europe and the Middle East. Here in the contiguous US, it was the fourteenth warmest year on NOAA’s books. Alaska, however, was even warmer with its second warmest year ever recorded.

The exceptional warmth of 2018 is largely attributed to the long-term trend of human-caused climate change. While El Niño conditions helped influence record heat in the past, 2018 saw the cooling effects of La Niña in the beginning of the year with ENSO neutral conditions prevailing after April.

Looking at the bigger picture, nine of the ten warmest years on record have occurred since 2005, with the last five years ranking as the five warmest on record.  The only year from the 20th century included on the top ten list is 1998, which is tied with 2009 as the planet’s ninth warmest year on record.

As greenhouse gases – the main driver of global warming – continue to spew into the atmosphere, temperatures will continue to rise and records will likely continue to fall.

Global temperature records date back to 1880.

2018 was Earth’s  4th warmest year on record. Credit: NOAA

Arctic Blast Brings Record Cold to NYC

After getting off to a relatively slow start, winter has kicked into high gear. For the second time this month, a massive arctic outbreak has sent most of the eastern two-thirds of the U.S. into a deep freeze.

Here in New York City, the temperature peaked at just 16°F in Central Park on Thursday, tying the record cold high for the date set in 1935. The low dropped to 2°F, missing the record of -1°F by a few degrees. However, when you factor in the wind chill, it felt like a very memorable -17°F.

As cold as it was on Thursday, it was not the coldest day the Big Apple has ever experienced. That dubious honor, according to the NWS, belongs to February 9, 1934, when the air temperature reached a brutal low of -15°F.

The city’s normal high and low temperatures for this time of year are 39°F and 27°F, respectively.

This week’s unusually frigid conditions were the result of a deep dip in the jet stream and a lobe of the polar vortex reaching southward over much of the eastern part of the country. While a brief warm-up is expected over the next few days, it is still winter so keep those hats and gloves handy.

The temperature topped out at 16°F  in NYC on Thursday, tying the record cold high for the date. Credit: Melissa Fleming

December 2018: Ninth Wettest on Record for NYC

December 2018 felt like a weather roller coaster in New York City. Highs ranged from a relatively balmy 61°F to a chilly 36°F. But, with 17 out of 31 days posting above average readings, the warmth won out in the end. The city’s mean temperature for the month was 40.1°F, which is 2.6°F above average.

In terms of precipitation, December was a month for the record books. The city received 6.48 inches of rain in Central Park, tying December 1996 as the ninth wettest December on record. Three different days produced rainfall totals greater than one inch. The end of the month saw a soggy New Year’s Eve with 0.99 inches of rain. It was the first time in 24 years that it rained on the revelers at the Times Square ball drop festivities.

Snowfall, however, was scarce. Only a trace amount was reported for the month. New York City, on average, sees 4 inches of rain and 4.8 inches of snow in December.

November 2018: Earth’s Fifth Warmest November on Record

Our global temperature continued its upward trend last month. November 2018 not only tied 2004 and 2016 as the fifth warmest November on record, but it also closed out the planet’s second warmest September to November season – a period known as meteorological autumn in the northern hemisphere.

According to the State of the Climate report by NOAA’s National Centers for Environmental Information, Earth’s combined average temperature for November – over both land and sea surfaces – was 56.55°F, which is 1.35°F above the 20th-century average. This November also marked the 407th 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.

Globally, the collective period of September, October, and November was also unusually warm. NOAA reports that Earth’s average temperature for the season was 1.44°F above the 20th century average of 57.1°F. That makes it the second warmest such period on record. Only 2015 was warmer.

While heat dominated most of the planet during this three-month stretch, some places were particularly warm, including parts of Europe, Scandinavia, Alaska, and eastern Russia. For the contiguous US as a whole, the season was only slightly above average. To put this disparity into context, consider that the mainland United States constitutes less than 2% of the total surface of the Earth. This detail highlights the fact that climate change is a complex global phenomenon that involves much more than the short-term weather that is happening in our own backyards.

These soaring temperatures are largely attributed to the long-term trend of human-caused climate change. ENSO-neutral conditions prevailed in November, which means there was neither a warm El Niño nor a cool La Niña in the Pacific to influence global weather patterns.

Year to date, the first eleven months of 2018 were the fourth warmest such period of any year on record. Global temperature records date back to 1880.

Credit: NOAA

2018: Not Yet Over, But Already Among the Top Ten Wettest in NYC

The northeastern United States has been rather soggy this year. With more than two weeks still left in 2018, many locations have already posted their wettest years on record.

Here in New York City, we have received 59.68 inches of rain to date, which is 12.08 inches above average. That means 2018 now ranks among the top ten wettest years ever recorded in the Big Apple.

Much of this impressive, and still building, total came down during several heavy rain events over the course of the year. Each of these caused street and subway flooding around the five boroughs. For the northeast region as a whole, heavy precipitation events increased 55% between 1958 and 2016, according to the latest National Climate Assessment.

Scientists attribute the increase in both frequency and intensity of heavy rain events to climate change. As greenhouse gases warm the atmosphere, the air is able to “hold” more water vapor. More specifically, according to the Clausius–Clapeyron relation, for every increase of 1°F, the saturation level of the atmosphere increases by about 4%. That means there is more water vapor available in the air to condense and fall as precipitation.

Credit: Climate Matters

November 2018: Seventh Wettest and Fourth Snowiest on Record in NYC

November was unusually cold in New York City this year. Highs ranged from a relatively balmy 72°F to a chilly 28°F. But, with 22 days posting below average readings, the cold won out in the end. The city’s mean temperature for the month was 44.5°F, which is 3.3°F below average.

In terms of precipitation, November was a month for the record books. The city received 7.62 inches of rain in Central Park, making it the seventh wettest November on recordSnowfall was also abundant, despite the fact that it all fell during a single storm. Central Park reported 6.4 inches of snow, setting set a new daily record for the date. It was also the earliest 6-inch one-day snowfall on record for the city and the largest one-day November snowfall since 1882. Moreover, that one snow event was enough to make this November the city’s fourth snowiest on record.

New York City, on average, sees 4.02 inches or rain and 0.3 inches of snow for the entire month of November.

 

October 2018: Earth’s Second Warmest October on Record

Our global temperature continued its upward trend last month with October 2018 marking the second warmest October ever recorded on this planet. Only October 2015 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 58.65°F, which is 1.55°F above the 20th-century average. October also marked the 406th 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 this October, some places were particularly warm. These included eastern Russia, northern Australia, Alaska, and most of the east coast of the United States. These soaring temperatures are largely attributed to the long-term trend of human-caused climate change. ENSO-neutral conditions prevailed in October, which means there was neither a warm El Niño nor a cool La Niña in the Pacific to influence global weather patterns.

For many people in the central US, however, October was relatively cold. These chilly temperatures, driven by a deep dip in the jet stream, helped cool the national average to 0.3°F below normal for the month. To put this disparity into context, consider that the contiguous United States constitutes less than 2% of the total surface of the Earth. This detail highlights the fact that climate change is a complex global phenomenon that involves much more than the short-term weather that is happening in our own backyards.

Year to date, the first ten months of 2018 were the fourth warmest such period of any year on record. Global temperature records date back to 1880.

October 2018 was the second warmest October ever recorded on this planet. Credit: NOAA