.... been raining much of night since ~0200Z, with latterly gentle sleet
falling (since roughly 0545Z ... haven't kept constant watch): total PPN
so far 3.5 mm / OAT = 1.4°C: no impact on surfaces or visibility (apart
from the surfaces being damp of course).

Martin.


--
West Moors / East Dorset
Lat: 50deg 49.25'N, Long: 01deg 53.05'W
Height (amsl): 17 m (56 feet)
COL category: C1 overall

On Mon, 30 Jan 2012 07:20:08 +0000, Martin Rowley wrote:

... been raining much of night since ~0200Z, with latterly gentle sleet
falling (since roughly 0545Z ... haven't kept constant watch): total PPN
so far 3.5 mm / OAT = 1.4°C: no impact on surfaces or visibility (apart
from the surfaces being damp of course).

Almost identical here too, Martin. Except it's just started snowing:
small flakes so not lying on the damp ground.

Hugh

--
Hugh Newbury

www.evershot-weather.org

On 30/01/2012 07:20, Martin Rowley wrote (30/0715Z):

... been raining much of night since ~0200Z, with latterly gentle sleet
falling (since roughly 0545Z ... haven't kept constant watch): total PPN
so far 3.5 mm / OAT = 1.4°C: no impact on surfaces or visibility (apart
from the surfaces being damp of course).

.... (30/0900Z): continuous since above, always light and often just a
few 'flakes'; very short periods of 'genuine' snow, but no impact on
very damp (and above-zero) surfaces: visibility still workable ... misty
.... OAT = +1.6°C//DP = +0.7°C.

Martin.



--
West Moors / East Dorset
Lat: 50deg 49.25'N, Long: 01deg 53.05'W
Height (amsl): 17 m (56 feet)
COL category: C1 overall

... been raining much of night since ~0200Z, with latterly gentle sleet
falling (since roughly 0545Z ... haven't kept constant watch): total PPN
so far 3.5 mm / OAT = 1.4°C: no impact on surfaces or visibility (apart
from the surfaces being damp of course).
... (30/0900Z): continuous since above, always light and often just a
few 'flakes'; very short periods of 'genuine' snow, but no impact on
very damp (and above-zero) surfaces: visibility still workable ... misty
... OAT = +1.6°C//DP = +0.7°C.

.... (30/1025Z): PPN continuous - large part of the time 'proper' snow
(i.e., getting caught up in spider's webs and not melting), but no
impact on surface or visibility. OAT = +1.4°C//DP = +0.3°C. The drop in
the latter value indicating the gentle advection of drier
(lower-dewpoint) air from the southeast.

PPN now very light - few wet/melting flakes: raw.

Martin.




--
West Moors / East Dorset
Lat: 50deg 49.25'N, Long: 01deg 53.05'W
Height (amsl): 17 m (56 feet)
COL category: C1 overall

On 30/01/2012 10:29, Martin Rowley wrote:
... (30/1025Z): PPN continuous - large part of the time 'proper' snow
(i.e., getting caught up in spider's webs and not melting), but no
impact on surface or visibility. OAT = +1.4°C//DP = +0.3°C. The drop in
the latter value indicating the gentle advection of drier
(lower-dewpoint) air from the southeast.

PPN now very light - few wet/melting flakes: raw.

.... (30/1210Z): any 'wintry' PPN ceased by 11Z, and since then cloud
base lifting - St underneath fragmenting - very 'thin', sporadic
drizzle: OAT up to 2.3°C, DP = 1.2°C.

Martin.



--
West Moors / East Dorset
Lat: 50deg 49.25'N, Long: 01deg 53.05'W
Height (amsl): 17 m (56 feet)
COL category: C1 overall