Interesting Science Of How Snow Accumulates

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28 cm of lying snow in Tallaght on December 2nd, 2010. Image: Author

Snow is an extremely complicated form of precipitation, and as such leads to a very tricky time for a forecaster. A fraction of a degree either way can tip the balance between a proper snowflake and a more melted form, especially here in Ireland. There is a whole lot of physics going on there, much of which is still poorly understood, but let’s take a look at the stuff we do understand.

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Super El Nino 2015-2016. Will it have an impact on Ireland’s Winter?

Introduction

There has been much speculation in the media recently about this year’s ‘El Nino’ and its possible impacts on the winter weather both here in Ireland and in the UK. With sources now saying that the winter El Nino of 2015/2016 may possibly be the strongest on record, we will take a look to see if this Pacific Ocean climate phenomena does indeed have a direct impact on winter weather conditions here in Ireland

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Storm Abigail and Ex-hurricane Kate To Set Stormy Scene

Over the past week or so we have fallen into a warm Atlantic conveyor-belt pattern of weather which has brought rain band after rain band but very mild temperatures. The reason is a persistent low south of Iceland and a persistent high over the continent, we being stuck in between. It’s about to crank up a notch or two, however, as two named storms enter the party. Step up Abigail and Kate.
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Yet Another Tropical Cyclone Hits Yemen

UPDATE: 1200Z Sunday 8th November

Tropical Cyclone Megh intensified overnight and at 0900Z the JTWC had its intensity at 110 gusting 135 knots (204 gusting 250 kph). The eye has just passed over the northern part of the island of Socotra, as shown by the latest 1-km visible image (1130Z) and a 85 GHz microwave image at 1039Z. Earlier satellite-derived precipitation rates were around 1.2 inches (30 mm) per hour.

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Live: Tropical Cyclone Chapala

Updated 2300UTC, Monday 2nd November, 2015

Storm surge starts to flood coastal areas of Socotra. Image from Emirates247

Tropical Cyclone 04A (Chapala), which rapidly became a strong tropical cyclone (hurricane) in the Arabian Sea a few days ago (see here), is now in the Gulf of Aden, south of Al Mukalla, Yemen. It has reduced to 90 knots from its highest 145 knots, and is starting weaken under the effects of increased windshear and the Yemeni terrain. It will make landfall as a minimal hurricane at about 0600Z Wednesday (0900 local time) and will bring life-threatening rainfall over a wide area.

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