Re: [WR] Romsey - freezing rain (technically)
- From: "Alan Murphy" <afmccl@xxxxxxxxxxxxxx>
- Date: Wed, 30 Nov 2005 17:01:39 +0000 (UTC)
"Nigel Paice" <nigelpaice@xxxxxxx> wrote in message
news:3v58f5F14a850U1@xxxxxxxxxxxxxxxxx
> The very slight rain now falling is classed as freezing
> because our air temp is -0.1C and the concrete temp
> is -0.2C. It is, however, having no obvious impact on
> any surfaces. Odd spots have been falling since 0825Z.
>
> SYNOP 30/0850Z
> 03/// 41550 71202 11001 21008 40100 57005 76622
> 875// 333 85620 87635 92600=
>
> METAR
> EG// 300850Z 12002KT 5000 -FZRA BKN020 BKN035
> M00/M01 Q//// WHT=
>
> Details:
> wind... SE by E, force 1.
> visibility... 5000m (due to mist rather than pptn).
> weather... slight freezing rain (and mist).
> clouds... broken SC layers at 2000ft and 3500ft.
> dry bulb... -0.1C.
> dewpoint... -0.8C.
> RH... 95%.
> min temp last night... -2.8C.
> sea level pressure... 1010mb (falling slowly).
> rainfall last hour... trace.
> state of ground... frozen with slight hoar visible.
>
> beaufort letters (0750-0850Z)... cx,crox,cx,crox.
>
> Nigel (Romsey, Hampshire)
>
> post script: temps rose above freezing by 0900Z.
>
You would have known about it if it was the real stuff
and you were in your car. I was caught once on
the motorway to Liege, just outside Brussels. All the
traffic came to a complete halt and cars were sliding
sideways down the camber to the side of the road.
The coefficient of friction of the ice surface must have
been close to zero.
Alan
.
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