NOVEMBER DRIER, WARMER, AND DULLER THAN AVERAGE. AUTUMN 2024 MUCH DRIER, AND SUNNIER AND WARMER THAN AVERAGE
Armagh Observatory, 14th December 2024. Armagh Observatory stories that November 2024 was drier, hotter, and duller than common. Taking September, October, and November collectively the meteorological autumn at Armagh was a lot drier than common, the driest autumn at Armagh for eight years. Autumn 2024 was additionally barely sunnier than common, though the dullest autumn at Armagh for 3 years, and hotter than common though the best autumn at Armagh for 4 years.
Whole precipitation was 60.05 mm (2.36 inches) together with 9 hint values, or 59.6 mm if hint values are ignored. That is roughly 82% of the 183-year (1838-2020) long-term common November precipitation at Armagh (73.85 mm) and 73% of the newest (1991-2020) 30-year common (81.87 mm). The wettest day was the twenty second with 35.8 mm (1.41 inches) of rainfall, most of which fell within the small hours of the twenty third related to the passage of a deep despair named Storm Bert. The second wettest day was the thirtieth with 6.8 mm, a lot of which was related to a really heavy bathe on the night of the thirtieth, Armagh’s Georgian Day. The third wettest day was 6.7 mm on the 18th. These three moist or very moist days provided greater than 80% of the overall precipitation for the month.
There have been two named storms, particularly Storm Bert and Storm Conall. The deep, slow-moving despair known as Storm Bert, initially to the west of Eire, affected giant components of the nation throughout and after the small hours of the twenty third with heavy rainfall and winds at Armagh approaching gale pressure. Breezy and typically windy climate continued the next day and into the twenty fifth. Storm Bert introduced flooding to some components of Northern Eire and the bottom atmospheric strain of the month at 09:00 GMT at Armagh, particularly 979.0 mbar lowered to imply sea stage on the twenty fourth. Storm Conall, however, solely considerably affected components of southern and south-east England on the twenty sixth and on the morning of the twenty seventh earlier than shifting into the Netherlands.
The best atmospheric strain of the month was 1042.1 mbar on the twelfth. This was, by a small margin, the very best November atmospheric strain at Armagh for 23 years, that’s, since 1042.5 mbar was recorded on the sixteenth of November 2001. The month was dominated by comparatively excessive strain, the month-to-month common being 1018.7 mbar. This, once more by a small margin, was the very best common November atmospheric strain for 17 years, that’s, since November 2007 (1020.4 mbar).
A diamond dove, presumably an escapee from an aviary, was seen close to the doorway to the Planetarium automotive park on the afternoon of the eleventh. A gull was seen chasing off a heron on the morning of the twentieth.
Snow, sleet, and snowflakes, none mendacity, have been noticed on 4 days of a 5-day chilly spell lasting from the 18th to the twenty second. A rainbow was seen across the time of observations (09:00 GMT) on the morning of the twenty fifth.
The imply temperature this November was 8.0 levels Celsius (46.4 Fahrenheit), almost 1.8 C hotter than the 225-year (1796-2020) long-term common November temperature at Armagh (6.22 C) and 0.7 C hotter than the newest (1991-2020) 30-year common (7.33 C). It’s fascinating that after we contemplate the run of 30-year averages at Armagh, November exhibits the best improve in month-to-month common temperatures between the (1961-1990) 30-year common and the newest (1991-2020) 30-year common, roughly 1.2 C in thirty years or 0.4 C per decade.
Even for these with out thermometers such a change is kind of noticeable. For instance, leaves at the moment are remaining on timber till fairly late in November, and lawns nonetheless must be reduce proper as much as the top of the month and typically into early December. Such phenomena would have been virtually unparalleled 30 years in the past.
The best most air temperature, notionally the warmest day, was 16.9 C on the afternoon of the sixth, adopted by 16.0 C round noon on the seventh and 14.9 C on the twenty third. The sixth was the fourth warmest November day on report at Armagh. The 5 warmest November days at Armagh at the moment are the eleventh of November 2022 (17.6 C), the 2nd of November 2005 and the first of November 2015 (each 17.2 C), the sixth of November 2024 (16.9 C) and the 2nd of November 1927 (16.8 C).
The bottom most air temperature, often the best day, was 1.4 C. This occurred when temperatures have been rising quickly shortly earlier than the climate readings have been taken at 09:00 GMT on the twenty eighth. Following commonplace meteorological apply this lowest every day most temperature was assigned to the twenty seventh regardless of the very best temperature that day (-0.1 C) by no means exceeding freezing, besides shortly earlier than the time of readings on the twenty eighth. Nonetheless, the nominal lowest most temperature (1.4 C) was the best November day at Armagh for 16 years, that’s, since a a lot decrease most air temperature of -1.5 C was recorded on the twenty eighth of November 2010.
The very cool 27/28 November was adopted by the second lowest every day most air temperature, particularly 4.1 C on the afternoon of the twentieth, after which by 4.6 C quickly after noon on the 18th.
The best minimal air temperature, notionally the warmest night time, was 13.1 C, which occurred across the time of observations (09:00 GMT) on the seventh. This was adopted by 11.3 C on the morning of the eighth after which by 11.0 C on the morning of the thirtieth. The bottom minimal air temperature, often the best night time, was -4.3 C on the morning of the twenty eighth, adopted by -2.9 C shortly after the observations have been taken at 09:00 GMT on the twenty first however attributed to the twenty second, and by -2.9 C within the small hours of the twenty seventh.
There have been 15 nights with floor frost, the coldest three of which have been -7.7 C on the twenty first, -6.9 C on the twenty second, and -6.8 C on the twentieth. There have been 5 nights with nighttime air frost, of which the three coolest have been these simply talked about, particularly -4.3 C on the morning of the twenty eighth, and -2.9 C attributed to the twenty second and -2.9 C on the twenty seventh.
There have been 46.5 hours of robust sunshine this November, roughly 78% of the 140-year (1881-2020) long-term common November sunshine at Armagh (59.6 hours) and 75% of the newest (1991-2020) 30-year common (61.8 hours). This was the dullest November at Armagh for 9 years, that’s, since November 2015 (44.4 hours of robust sunshine).
November 2024 was outstanding for the terribly boring begin to the month, the fortnight starting the twenty seventh of October 2024 seeing a complete of simply 2.4 hours of robust sunshine at Armagh, and the seven days from the thirtieth of October to the fifth of November seeing not a single minute of robust sunshine. A sequence of seven sunless days through the months of October and November at Armagh happens on common solely as soon as each roughly 50 years.
The sunniest day was the twenty sixth with 7.1 hours of robust sunshine adopted by the twenty fourth with 6.3 hours and the twenty first with 5.3 hours.
Taking the three autumn months September, October, and November collectively, autumn 2024 was a lot drier than common, and hotter and sunnier than common.
Whole autumn precipitation was 161.25 mm together with 23 hint values, which is simply 72% of the 183-year long-term (1838-2020) common autumn rainfall at Armagh (223.2 mm) and 71% of the newest (1991-2020) 30-year common (227.9 mm). This was the driest autumn at Armagh for eight years, that’s, since autumn 2016 (144.1 mm).
With a median temperature of 10.82 C, autumn 2024 was once more hotter than common, roughly 1.4 C hotter than the 225-year (1796-2020) long-term common autumn temperature at Armagh (9.41 C), and 0.4 C hotter than the newest (1991-2020) 30-year autumn common (10.40 C). Regardless of this, autumn 2024 was the best autumn at Armagh for 4 years, that’s, since autumn 2020 (imply temperature 10.65 C).
Whole autumn sunshine was 283.9 hours, just below 10% greater than the 140-year (1881-2020) long-term autumn common at Armagh (259.0 hours) and 6% greater than the newest (1991-2020) 30-year autumn common (268.1 hours).
These information confer with observations at Armagh Observatory, which has been recording the climate at Armagh since 1795.
For additional data, please contact:
Professor Mark E. Bailey
Emeritus Director of Armagh Observatory
Armagh Observatory and Planetarium
Faculty Hill
Armagh
BT61 9DG
Tel: 028-3752-2928
E-mail: mark.bailey@armagh.ac.uk
