[Dave K]

What is becoming the tediously predictable onslaught for the end of the week and weekend. Looks like the rain is due to arrive in the SW before the end of the day and then go on to deluge Wales in particular, but it wil be helpful if depressing to keep a record of the various parameters over the next few days once again to see which of the models is doing the best job. Who knows, maybe we can even throw low max temps into the mix as well with some big contrasts on the 22nd between north and south.

Still some uncertainty but North Wales still probably odds on for the highest rainfall totals as it stands, and the track/depth of the LP hasn't really been nailed yet either.


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[Dave K]

Private AWS using Instromet eqpt at Land's End already reads 16.8 mm for today with a burst of 36mm/hr earlier.

[Rich T 2]

6.2 mm here so far, mostly between 4pm and 6pm.

[Dave K]

Culdrose 10.8 mm in 6 hours to18z.

[Richie]

Not too bad up here at the moment.
Although air pressure is starting to drop.

2000 UTC

Air Pressure: 1017.9 mb.
Trend: -0.4 mb/hr Falling Slowly.
Rainfall: 0.0mm
Rain Rate: 0.0mm/hr at ---- UTC.
Wind: 5 Knots, Easterly
Gust: 13 Knots

[Paul Domaille]

Rainfall rates hitting 70-90mm/hour according to NetWx radar sitting in the conservatory it certainly sounds like it !
Cheers,
Paul D

[Dave K]

15 mm + to 06z on the 21st:

Dunkeswell Aerodr. (253 m)	20.2 mm
Yeovilton (20 m)	20.0 mm
Plymouth MtBatten (50 m)	17.0 mm
Isle of Portland (52 m)	16.0 mm
Guernsey (AP) (101 m)	15.1 mm
Bournemouth (10 m)	15.0 mm
Mumbles (32 m)	15.0 mm

[PJB]

15.2mm here overnight

[Chris Alder]

PJB, on 21 June 2012 - 07:16, said:

15.2mm here overnight

Snap, same here!

[Chris Alder]

A huge amount of pretty heavy in the western Channel / Brest region at the moment, GFS only has 4-10mm accumilations this afternoon but looking at the current radar I would say 10-25mm would be more likely in places?

[Dave W]

Net Wx radar has maxes in last 24 hours of 25-30mm in SE Devon esp nr coasts in last 24 hours

[PJB]

yes a good 10-20mm possible i would have thought

[Richie]

Rain started falling around 0600Z.

0900 UTC

Air Pressure: 1008.5 mb.
Trend: -1.0 mb/hr Falling.
Rainfall: 3.6mm
Rain Rate: 32.4mm/hr at 0857 UTC.
Wind: 13 Knots, Easterly.
Gust: 15 Knots.

[Richie]

Rain becoming heavy in the last half hour.

0925 UTC

Air Pressure: 1008.5 mb.
Trend: -1.0 mb/hr Falling.
Rainfall: 9.1mm
Rain Rate: 46.8mm/hr at 0920 UTC.
Wind: 13 Knots, Easterly.
Gust: 15 Knots.

[Dave W]

Very humid in the SE today eg) 20, dp 17C at East Malling

[Richie]

Rain has stopped, wind decreased, also becoming much milder here too.

1325 UTC

Air Pressure: 1005.3 mb.
Trend: -0.9 mb/hr Falling.
Rainfall: 15.6mm
Rain Rate: 46.8mm/hr at 0920 UTC.
Wind: 6 Knots, Easterly.
Gust: 18 Knots.

[Dave K]

Sharp increase of reported windspeeds at Guernsey Airport, no doubt in association with the developing LP.

Date & Time	tt [°C]	td [°C]	ff [km/h]	ff [kn]	fx [km/h]	fx [kn]	dd	ppp [hPa]	vv [km]
21.06.2012 15:00:00	12,5	10,2	54	29	81	44	SSW	1005,4	10
21.06.2012 14:00:00	13,2	13,2	19	10	-	-	SSE	1005,7	9

[PJB]

gust to 61 Knts or 69 mph ealrier at Ushant. Updated Synoptic discussion

[Dave K]

Another day of large temperature ranges too, with some locations in the east 21 °C or higher, while Cardinham struggles at 9.6 °C!

[PJB]

53 Knt Gusts now on the Cherbourg Peninuala. could become quite windy later this evening in the South.