Monday 18 February 2013, 16:06
35 years ago today, Wales beat Scotland at the Arms Park in Cardiff and it started snowing.
The blizzard of February 18 1978 turned out to be one of the biggest of the 20th century and villages were cut off for days.
At Cardiff Airport 34cm of level snow (13 inches) fell with drifts 8 metres high (26 feet).
There's no sign of a blizzard like that on the horizon though or even any significant snow.
High pressure will keep things largely dry although it will turn noticeably colder from Wednesday onwards with an easterly wind and over the weekend this may blow a few snow flurries our way.
Sometimes our weather can get stuck in a rut with a dry or wet spell lasting for days or weeks on end.
It all depends on the position of an Omega Block in the upper atmosphere so called because it resembles the shape of the Greek letter Omega.
These blocks can last for some time before breaking down and the weather we receive, depends on which part of the Omega Block we are stuck under.
At the moment we are in the middle - under high pressure which is keeping us dry but either side there is low pressure and the weather is much more unsettled with rain or snow.At the moment high pressure which is keeping us dry.
The polar jet stream which normally brings us wind and rain in from the Atlantic is being diverted well to the south over North Africa with Spain, Portugal and the Mediterranean getting spells of rain and heavy showers.
At the moment, it looks like the Omega Block will stick around in one shape or form into next week but probably break down and move away early in March allowing the jet stream to move back north again.
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