Tim A
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Northwest Weather Discussion
Tim A replied to damianslaw's topic in Northwest Community Group's Northwest Weather Discussion
My Grandma lived at Woodford, remember I was concerned with how cold it got there. Might have been Jan 10 it had the lowest temps? -
Northwest Weather Discussion
Tim A replied to damianslaw's topic in Northwest Community Group's Northwest Weather Discussion
Yep Shap is a good frost hollow. Often beats anywhere else in England for overnight temps. It is in a bit of a valley though with 300m asl ground on most sides so the cold air can drain and get trapped at Shap. At LBA the cold air cannot sit as it drains down on 3/4 sides down to 70-100m asl. More about the geography and shelter rather than strictly elevation . -
Northwest Weather Discussion
Tim A replied to damianslaw's topic in Northwest Community Group's Northwest Weather Discussion
I generally agree with you that the NW seems to be slightly colder overnight in many cold spell situations but I wouldn't use Leeds/Bradford as the comparison as that makes the difference seem more than it is. LBA is 210masl at the top of a hill so cannot get low overnight temps as nowhere for the cold to drain from. Like LBA I have never recorded a temp below -9c back to 1994 as I am similarly placed but it can be and is much colder in the valleys and Vale of York. Places like Church Fenton and Linton on ooze . As an example it was -15c for two nights at Linton on ooze (York) in Dec 2010 but on the same nights -9c and -7c at LBA -
No temp issues here now as -0.3c and full snow cover . Steady fine snow building up, but would prefer it to be a bit heavier if we are to get some special totals. Heavier pulses are appearing spreading from Harrogate, so hopefully that is the orographic effect kicking in. Not really possible to track much radar wise anymore, seems to all develop in situ and be quite static apart from the stuff moving up towards S Yorks. A complicated picture.
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Lets hope so, it has gone darker. 0.7c here with drip drip but that stuff to the South looks very interesting...perhaps it will cause rush hour carnage. A know a number of people who think that it is and have started venturing out. Lets face it drip drip normally means the end of a snow event but not today.
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The temp has risen a bit to 0.5c and there is some dripping now, but it isn't really because milder air has come up from the South (still 1c across the Midlands) but because the snow has gone very light and it is the middle of the day in March. March 22 2013, there was a lot more snow on all surfaces, but there was a period for an hour or so in the middle of the event when it starting slowly thawing even at 200m, then it re-froze and everything was lethal. Don't really want to compare the events but March daylight is always an issue.
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Worth noting that most models don't show any significant accumulations until later. We have 4cm on the grass/natural and raised surfaces now. But as the snow gets heavier it is sticking to more areas of the drive and pavement. Some big flakes now. Also though the temp is rising , up to -0.1c now from -1.2c earlier so unsure what the next few hours will bring.