Sunday, 2 February 2014

January 2014 Weather Report

A wet, unsettled and generally mild month with a complete absence of northerly winds and barely any wintry weather of note, indeed so far this winter no snow at all has been recorded and there is now the prospect of winter 2013/14 becoming the first snowless winter on our records. However despite the lack of properly cold weather it was never particularly mild either during the month, with only a few days managing to see temperatures climb above 10 C, and in the end the month would conclude only half a degree centigrade above the 1981-2010 average which in the scheme of things is not particularly mild with four previous Januaries since 2003 seeing larger positive anomalies (the mildest January being 2007 with a mean temperature of 7.0 C, some 2.3 C warmer than this year!).

A grey and damp day up in Rosedale

However the overwhelming main feature of the month was the rain and the abundance of this liquid precipitation meant that over double the long term average was recorded. By the months conclusion 110.5 mm (4.35 inches) was recorded, this becoming the first month since December 2012 to see more than a 100 mm's in a single calendar month, while rainfall was recorded on 24 days. Indeed just two days could be officially defined as dry as the remaining days all saw at least a trace amount in the gauge. The wettest day would prove to be the 8th with 21.4 mm (the wettest day since March of last year) but the 25th would also prove worthy of note with a short period of heavy rain which was accompanied by hail, thunder and winds gusting up to gale force. Thunder in winter is an uncommon occurrence at Wold Garth with only three other records of this electrical phenomena during the months of December, January or February since 2003.

Winter trees

Unsurprisingly low pressure and southerly winds dominated the month, the average barometric pressure for the month being only 998.8 mbar, while winds came from a southern quadrant on 25 days with 13 of these being direct southerlies. The previous December had been remarkable for its lack of northerlies but this month would go even further with not even one day seeing winds from a northern quarter ! However unlike December winds were rarely as strong and the maximum gust was a modest 34 knots which was recorded during the aforementioned thundery squall on the 25th.

A frosty walk up on the Wolds

AVERAGE TEMPERATURE : 4.7 C (0.5 C above the 1981-2010 average)
AVERAGE MAXIMUM : 7.7 C (0.7 C above the 1981-2010 average)
AVERAGE MINIMUM : 1.6 C (0.3 C above 1981-2010 average)
HIGHEST MAXIMUM : 11.5 C, 5th
LOWEST MAXIMUM : 4.1 C, 20th
HIGHEST MINIMUM : 7.0 C, 7th
LOWEST MINIMUM : -3.7 C, 21st
AIR FROSTS : 8
FROST DURATION : 43 hours

TOTAL RAINFALL : 110.5 mm (204% of the 1981-2010 average)
MAXIMUM TOTAL (09-09) : 21.4 mm, 8th
RAIN DAYS (=>0.2 mm) : 24
WET DAYS (=>1.0 mm) : 20
RAIN DURATION : 108 hours
DAYS WITH THUNDER : 1
DAYS WITH HAIL : 1
DAYS WITH SNOW FALLING : 0

TOTAL SUNSHINE : 46.3 hours (81% of the 1981-2010 average)
AVERAGE PER DAY : 1.5 hours
SUNLESS DAYS : 8

AVERAGE WIND SPEED : 3.0 knots
MAXIMUM GUST : 34 knots, 25th
WIND DIR. FREQUENCY : N 0, NE 0, E 2, SE 7, S 13, SW 5, W 4, NW 0

AVERAGE BAROMETRIC PRESSURE (at 0900) : 998.8 mbar
MAXIMUM BAROMETRIC PRESSURE : 1022.8 mbar
MINIMUM BAROMETRIC PRESSURE : 977.7 mbar

AVERAGE GRASS MINIMUM : 0.5 C
LOWEST GRASS MINIMUM : -6.8 C, 21st
GRASS FROSTS : 15

DAYS WITH FOG : 0
DAYS WITH SNOW LYING : 0
MAXIMUM SNOW DEPTH : n/a
SNOW INDEX : 0 cm/days

January 2014 Logbook