Storm Barra brings rain and wind

The wind increased during Tuesday morning with a peak gust of 31mph and steady rain amounting to 5.9mm. That daily total meant that the monthly total of 19.6mm was more than the whole of November, but only 21% of the December average.

The maximum of 7.6C was just below average and the minimum of 4.3C was 2.1C above the average.

The weather front brought heavy rain just before 1400 following which there was a complete lull with the wind dropping out completely. There was a very sharply defined back edge to the weather front.

Wednesday began dry with thin high cloud and initially dry but rain showers not far away.

A meteorological event called a ‘weather bomb’ occurred at the centre of the depression as the barometric pressure dropped in excess of 24mb in 24 hours. The local fall in that period was 17mb from 1002.3mb to a low of 985.2mb

Relative calm before Storm Barra arrives

Monday brought a wet start start to the day with 2.7mm of rain in the morning but dried up after midday. The wind direction started from the south but veered into the west before noon. The thermometer rose to 8.0C at 13.56 being exactly average for December but during the evening, before cloud built up from advancing Storm Barra, the temperature dropped to 1.0C at 01.33 on Tuesday being 1.3C below they average.

Tuesday arrived with advance thick cloud from Storm Barra. The depression at 08.00 was just making landfall on the west coast of Ireland with a very low barometric pressure of 957mb.

Storm Barra began to have an effect locally as the wind slowly began to pick up from 04.30 and the barometric pressure to fall from 00.30. At 08.00 the barometric pressure was 1002.3mb and the temperature having risen to 4.6C.

Update at 13.00: maximum gust of 31mph at 11.41. Barometric pressure dropping rapidly with current pressure of 988.7mb

Cool by day and night

The thermometer on Sunday struggled to reach a peak of 5.4C being 2.6C below average in the brisk northerly wind with no sunshine. Wind chill meant outside it felt 2C lower than that indicated on the thermometer. It was the first dry day for a week.

Although it was a cloudy night the temperature still sank almost to freezing with a minimum of 0.6C being 1.3C bellow average.

Monday arrived dark and gloomy under thick, low cloud with the wind light but having backed into the south.

Cool wind again

The wind on Saturday was from the west then north-northwest and strong, both cool directions. As a result the thermometer did not get above the average with a maximum of 7.2C (-0.8C).

The minimum overnight of 4.0C was 1.7C above average due to the persistent cloud that brought rain showers starting at 01.50 on Sunday producing 2.7mm of precipitation.

Sunday arrived gloomy with thick, low cloud and the wind predominantly from the north and strong, gusting to 31mph. As a result the temperature of 4.0C at 08.00 felt more like 1.1C outside due to wind chill.

Milder again by day!

The thermometer rose to 9.4C on Thursday, an above average maximum (+1.4C). The converse was true of the overnight minimum that saw the thermometer drop to 1.2C (-1.1C) at 01.23.

The rain band that traversed the area in the early hours of Saturday brought 1.2mm of precipitation.

Saturday arrived with the trailing edge of the trainband slowly easing away to the east leaving brighter skies to the west. The thermometer at 08.00 had recovered to 4.1C.

The barometric pressure has fallen again with a current reading at 08.00 of 999.3mb with the air movement again on Saturday coming predominantly from the west.