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Post by snowman on Dec 8, 2009 6:59:47 GMT
New weather forecasts for coming weeks have been appearing showing a pattern change from bands of wet from Atlantic, to a block over Scandinavia. It looks as if we are in for another cold spell (will revert on snow potential in next few days when I've had better chat with a friend who follows this, as it is his hobby), As everyone knows when temp is below +7°C, winter tyres are best. (Unless you want to drive a 12 tonne skidding bus, when there are a few snowflakes like last February). I have never understood why night route buses don't have winter tyres as temp is often below +7°c in winter at night, and only marginally above during day Anyway for those who want evidence 91.121.94.83/modeles/gfsp/run/gfs-1-180.png?091.121.93.17/pics/MT8_London_ens.png |
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Post by iranair747 on Dec 8, 2009 7:49:52 GMT
any chance of snow by christmas day? I can usually read those charts, but today I'm lazy  |
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Post by snowman on Dec 8, 2009 15:02:50 GMT
any chance of snow by christmas day? I can usually read those charts, but today I'm lazy If you are wanting to place a bet, I have been promised an update later this week In meantime, remains a possibility of some snow next Tuesday 15th |
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Post by snowman on Dec 10, 2009 6:55:28 GMT
New weather forecasts for coming weeks have been appearing showing a pattern change from bands of wet from Atlantic, to a block over Scandinavia. It looks as if we are in for another cold spell (will revert on snow potential in next few days when I've had better chat with a friend who follows this, as it is his hobby), As everyone knows when temp is below +7°C, winter tyres are best. (Unless you want to drive a 12 tonne skidding bus, when there are a few snowflakes like last February). I have never understood why night route buses don't have winter tyres as temp is often below +7°c in winter at night, and only marginally above during day Anyway for those who want evidence 91.121.94.83/modeles/gfsp/run/gfs-1-180.png?091.121.93.17/pics/MT8_London_ens.pngMight be some snow showers Monday night, but snow is likely at times Tuesday. Ground temps will be low, so take care on the hills as snow could settle For those who want easy details, try this link, can put first part of postcode in top left and click on days along top www.metcheck.com/V40/UK/FREE/7days.asp |
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Post by iranair747 on Dec 10, 2009 18:53:12 GMT
New weather forecasts for coming weeks have been appearing showing a pattern change from bands of wet from Atlantic, to a block over Scandinavia. It looks as if we are in for another cold spell (will revert on snow potential in next few days when I've had better chat with a friend who follows this, as it is his hobby), As everyone knows when temp is below +7°C, winter tyres are best. (Unless you want to drive a 12 tonne skidding bus, when there are a few snowflakes like last February). I have never understood why night route buses don't have winter tyres as temp is often below +7°c in winter at night, and only marginally above during day Anyway for those who want evidence 91.121.94.83/modeles/gfsp/run/gfs-1-180.png?091.121.93.17/pics/MT8_London_ens.pngMight be some snow showers Monday night, but snow is likely at times Tuesday. Ground temps will be low, so take care on the hills as snow could settle For those who want easy details, try this link, can put first part of postcode in top left and click on days along top www.metcheck.com/V40/UK/FREE/7days.aspthanks ;D Gotta say, I only trust the weather report a day before as its rarely accurate before... thats unless theres a chance of snow where I would get happy |
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Post by lc1 on Dec 14, 2009 16:22:49 GMT
I have never understood why night route buses don't have winter tyres as temp is often below +7°c in winter at night, and only marginally above during day The simple answer is it would mean changing the wheels when the bus comes in from it's day shift before it goes out for the night and then changing them back again the next morning as I'm sure you can imagine this is unworkable. Lets hope we have snow like we did in February, although this time it lasts for about 10 days ;D as long as the roads are driveable on Christmas Day that is as I have to drive from Erith to Waterloo and back again  (well I won't be driving back I shall be comatose in the car and someone else can do the driving for a change ;D) |
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Post by snowman on Dec 14, 2009 21:46:26 GMT
I have never understood why night route buses don't have winter tyres as temp is often below +7°c in winter at night, and only marginally above during day The simple answer is it would mean changing the wheels when the bus comes in from it's day shift before it goes out for the night and then changing them back again the next morning as I'm sure you can imagine this is unworkable. ;D) Slight misunderstanding here, they are normally changed in November and April, to/from summer/winter The difference is in the rubber compound and the temperature range it is stickiest in. You can use winter tyres in temps of +15, but if you use summer tyres when it is -5 they are fairly hard, and dont grip much, the colder it is the harder the rubber becomes. I would assume the wheels are taken off more than every six months to service the brake pads, so putting a different set back on isn't really adding any work, it costs slightly more to have a second set, but the summer set can use a harder compound and the tyres last even longer which negates some cost difference. Also less likely to get accident damage with correct tyres which is further saving. |
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Post by lc1 on Dec 15, 2009 0:50:00 GMT
The simple answer is it would mean changing the wheels when the bus comes in from it's day shift before it goes out for the night and then changing them back again the next morning as I'm sure you can imagine this is unworkable. ;D) Slight misunderstanding here, they are normally changed in November and April, to/from summer/winter The difference is in the rubber compound and the temperature range it is stickiest in. You can use winter tyres in temps of +15, but if you use summer tyres when it is -5 they are fairly hard, and dont grip much, the colder it is the harder the rubber becomes. I would assume the wheels are taken off more than every six months to service the brake pads, so putting a different set back on isn't really adding any work, it costs slightly more to have a second set, but the summer set can use a harder compound and the tyres last even longer which negates some cost difference. Also less likely to get accident damage with correct tyres which is further saving. Well the way it was worded was for just night buses to have the winter tyres. Personally I don't think we are quite at the stage where we need to take special precautions for cold weather. |
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Post by snowman on Dec 15, 2009 6:34:46 GMT
Slight misunderstanding here, they are normally changed in November and April, to/from summer/winter The difference is in the rubber compound and the temperature range it is stickiest in. You can use winter tyres in temps of +15, but if you use summer tyres when it is -5 they are fairly hard, and dont grip much, the colder it is the harder the rubber becomes. I would assume the wheels are taken off more than every six months to service the brake pads, so putting a different set back on isn't really adding any work, it costs slightly more to have a second set, but the summer set can use a harder compound and the tyres last even longer which negates some cost difference. Also less likely to get accident damage with correct tyres which is further saving. Well the way it was worded was for just night buses to have the winter tyres. Personally I don't think we are quite at the stage where we need to take special precautions for cold weather. my apologies for bad wording, what I meant was that only the buses that are used at night could be fitted so that only about 10% of fleet needs to be done (as it is usually colder at night). However thinking about it, probably would need to do nearer 1500-2000 buses to allow some fleet flexibility and switching of buses. We need to avoid a repeat of early Feb 2009 when no buses ran, not really consistent with a world class City |
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Post by snowman on Dec 16, 2009 13:33:52 GMT
New weather forecasts for coming weeks have been appearing showing a pattern change from bands of wet from Atlantic, to a block over Scandinavia. It looks as if we are in for another cold spell (will revert on snow potential in next few days when I've had better chat with a friend who follows this, as it is his hobby), As everyone knows when temp is below +7°C, winter tyres are best. (Unless you want to drive a 12 tonne skidding bus, when there are a few snowflakes like last February). I have never understood why night route buses don't have winter tyres as temp is often below +7°c in winter at night, and only marginally above during day Anyway for those who want evidence 91.121.94.83/modeles/gfsp/run/gfs-1-180.png?091.121.93.17/pics/MT8_London_ens.pnglooks like the early snow warning was useful, as there is snow falling in some areas. More is likely Friday/weekend cold/snowy winters are likely to be a regular occurance whilst sunspot levels remain low |
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Post by snowman on Dec 22, 2009 6:50:26 GMT
With the exception of couple of days around 29th, temps expected to remain about 4-5°c below normal 91.121.93.17/pics/MT8_London_ens.pngupper graph is projected temp (this is upper air, add about 7c for head height), so anything below -7°c may be frosty, and good chance of this happening lower graph is precipitation, there are 20 runs in the weather model, output is different colour for each the choice is winter tyres or skidding...... |
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(well I won't be driving back I shall be comatose in the car and someone else can do the driving for a change ;D)