March: In Like a Lion and Out Like a Lamb

“March comes in like a lion, and goes out like a lamb”. This old proverb refers to March’s famously changeable weather.

As a month where we transition from winter to spring, March can often start off cold and blustery, but end warm and calm. From the beginning to the end of the month, the average daily temperature increases by 10°F. Exact conditions, of course, vary from year to year.

Although the precise origins of this popular phrase are unknown, many believe it is based on the constellations. At the beginning of March, Leo (lion) is highest in the midnight sky, while Aries (ram) begins to rise toward the end of the month.

Credit: The New Yorker

Feb 2020: Above Average Temps and Below Average Snow in NYC

February 2020 was not only a month of weather whiplash in New York City, but it was also a month for the record books in terms of above-average temperatures and below-average snowfall.

Of its twenty-nine days, twenty-two produced above-average temperatures, including one that was record warm. This unseasonable heat helped drive the city’s mean temperature for the month up to 40.1°F, which is 4.8°F above normal. That means February 2020 tied February 1954 as the fifth warmest February on record in the Big Apple. The top spot belongs to February 2018, when the average temperature for the month was 42°F.

February is usually the city’s snowiest month on the calendar, but this year only a trace of snow (less than 0.1 inches) was measured in Central Park. That makes February 2020 the second least-snowy February on record. Only 1998 produced less snow, with a definitive 0.0 inches. On average, February brings the city 9.2 inches of snow.

Rainfall was also somewhat scarce. Only 2.54 inches was reported. That is 0.55 below normal for the month.

Credit: The Weather Gamut

Cold Snaps are Getting Shorter

Winter is the fastest warming season in the United States. In the northeast, it has warmed three times faster than summer. That said, cold snaps – periods of unusually chilly weather – are still happening, but less often.

According to a study by Climate Central, the frequency and duration of these frosty events in the contiguous US  have been declining as the overall climate warms. Looking at data from cities across the country, the non-profit news organization found that some places, such as Las Vegas, NV, have lost cold days faster than others. Here in New York City, the average reduction was 5 days since 1970.

Credit: Climate Central

Little Snow for NYC this Winter

February is usually the snowiest month on the calendar in New York City, but to date this year we have not seen a single flake. This shortfall of snow is indicative of the weather pattern that has dominated the region for most of the 2019-2020 winter season.

To produce snow, you need moisture and cold air in place at the same time. While the city has had a few cold snaps this winter, they have not lasted very long. Consequently, the storms that have rolled through the area dropped mostly rain. In fact, the city currently has a rain surplus and snow deficit.

Here is a look at the current stats for the season (December 1 to present):

All measurements in inches. Credit: The Weather Gamut

The spring equinox is still a month away, so things could change. If you are a snow-lover, keep your finger crossed.

January 2020: Earth’s Warmest January on Record

Our global temperature continued its upward trend last month with January 2020 marking the warmest January ever recorded on this planet. The previous record was set in 2016.

According to a report by NOAA’s National Centers for Environmental Information, Earth’s combined average temperature for the month – over both land and sea surfaces – was 55.65°F. That is 2.05°F above the 20th-century average. January 2020 also marked the 421st 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.

It is also important to note that the ten warmest Januaries on record have all occurred since 2002 with the four warmest taking place since 2016.

While heat dominated most of the planet this January, some places were particularly warm, including Russia, Scandinavia, eastern Canada, Central Europe, and a large part of eastern Australia. The contiguous US was also above average for the month, posting its fifth warmest January on record.

Coming on the heels of 2019 – Earth’s second warmest year on record – these soaring temperatures are largely attributed to the long-term trend of human-caused climate change. In fact, January’s temperature marked the highest departure from average for any month during ENSO neutral conditions. That means neither El Niño nor La Niña was present in the Pacific to influence temperatures.

Global temperature records date back to 1880.

Credit: NOAA

Weather and Art: “Love of Winter”

Today is Valentine’s Day, a holiday when chocolate treats and images hearts abound. But for me, it is George Bellows’ Love of Winter that always comes to mind as we mark the mid-point of what is usually New York City’s snowiest month of the year.

A longtime personal favorite, this 1914 painting captures the spirit of those who embrace the season. Filled with the blurred movement of skaters on a frozen pond and accented with spots of bright color that pop against the white snow, it conveys the joy of being out in nature on a cold winter day.

While Bellows is better known for depicting scenes of boxing matches and urban life, art historians say he enjoyed the challenge of painting the varied lighting conditions produced by a snow-covered landscape. In fact, he wrote a letter to a friend in January 1914 complaining about the lack of snow in the New York City area that winter. He said, “There has been none of my favorite snow. I must paint the snow at least once a year.” Then, on February 13, a blizzard hit the region. The wintry conditions inspired him to create this joyful painting.

Love of Winter is part of the Friends of American Art Collection at the Art Institute of Chicago. Happy Valentine’s Day!

“Love of Winter”, 1914 by George Bellows. Collection of the Art Institute of Chicago

Winter is Warming Across the US

Winter is the coldest part of the year. But for most of the United States, it is the fastest warming season.

Across the contiguous United States, winter temperatures have increased an average of nearly 3°F over the past fifty years, according to Climate Central. The northern part of the country has seen the largest seasonal increase led by Burlington, VT with 6.8°F of warming since 1970.

Warmer winters may feel like a positive thing for some people, but they do not come without consequences. Periods of consistently cold temperatures help limit pest populations such as mosquitos and other pesky bugs. They also play an important role in plant development, especially for fruit trees that need a period of dormancy. Moreover, warmer winters threaten the livelihood of communities that depend on winter tourism, particularly ski resorts.

Looking ahead, as greenhouse gas emissions continue to increase, so too will the temperature and its associated impacts throughout the year.

Credit: Climate Central

Record Warm February Day for NYC

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

According to the NWS, the high temperature in Central Park hit 56°F, setting a new record high for the date. The previous record of 54°F had been in place since 1938.

The normal high for this time of year is 40°F.

Credit: The Weather Gamut

Visualizing Wind Speed

From a light breeze to a strong gale, wind speed can be described in numerous ways. All of which are categorized on the Beaufort Wind Force Scale.

Developed in 1805 by Sir Francis Beaufort, an officer in the UK’s Royal Navy, the scale is an empirical measure of wind speed. It relates wind speed to observed conditions at sea and overland instead of using precise measurements. Simply put, it allows a person to estimate wind speed with visual clues.

Initially, it was only used at sea and was based on the effect the wind had on the sails of a frigate – the most common type of ship in the British Navy at the time. By the mid-1800s, the scale was adapted to also reflect a certain number of anemometer rotations – a device that measures wind speed.

In the early 20thcentury, most ships transitioned to steam power and the scale descriptions were changed to reflect the state of the sea instead of the sails. Around the same time, the scale was extended to land observations. For example, the amount of leaf, branch, or whole tree movement is a visual indicator of the force of the wind.

Today, the scale has 13 categories (0 -12), with 0 representing calm winds and 12 being hurricane force. It is in use in several countries around the globe.

In the US, when winds reach force 6 or higher, the NWS begins issuing advisories and warnings for different environments. For marine areas, force 6-7 winds would prompt a small craft advisory, force 8-9 would warrant a gale wind warning, and a wind reaching force 10-11 would call for a storm warning. Force 12 would constitute a hurricane-force wind warning. On land, winds expected to reach force 6 or higher would cause a high wind warning to be issued.

If the winds are connected to a tropical cyclone, they would be measured on the Saffir-Simpson scale. The same type of special circumstances would also hold for a tornado, which would be measured on the Enhanced Fujita Scale.

Credit: Isle of Wight Weather Ctr

Contiguous US Posts Fifth Warmest January on Record

January, the so-called Dead of Winter, was unusually mild across much of the United States. No state in the Lower 48 ranked average or below average for the month, according to NOAA.

Taken as a whole, the mean temperature for the contiguous states was 35.5°F.  At 5.4°F above the 20th-century average, January 2020 now ranks as the country’s fifth warmest January on record.

Regionally, the Northeast and Great Lakes were of particular note. Temperatures were much above average in both areas, with the Northeast posting its tenth warmest January and a large portion of the Great Lakes remaining unfrozen.

Credit: NOAA