Wednesday 1 August 2018

Weather log July 2018

Weather log July 2018

Lwn Llanwnnen
LL Long Lawford
CL Church Lawford
CC Capel Curig
MH MIlford Haven
CITE Coton-in-the-Elms


Sun 1st warm night much of Wales (Mumbles min 18.9c, Aberdaron 17.1c, Capel Curig 9.6c, Coventry 12.2c, Shobdon 9.3c). Very or hot, clouded over Wales and Marches with showers in places (Porthmadog 31c.., Llanwnnen 29.2c, Gogerddan 29c, Trawsgoed 28.1c, Aberporth 22.2c, Hereford 29.9c, Nottingham 27.5c)

Mon 2nd widely hot and sunny again. Minima Mumbles 19.0c, Hereford & Shawbury 16.5c, Church Lawford (CL) & Coleshill 12.4c. Maxima Llanwnnen (Lwn) 30.9c, Porthmadog 30.7c, Pembrey 29.3c, Gogerddan 29c, Trawsgoed 28.9c, Coton-in-the-Elms {CITE} & Hereford 28.2c, Aberdaron 22.6c)

Tue 3rd warm to hot again, warmth tempered over much of the Midlands by a fresh east wind, but WW had another hot one Porthmadog max 30.1c hottest in UK (Lwn 29.3, Pembrey 28.4c, Gogerddan 28c, Hereford 26.4c, Mona 23.1c, Nottingham 22.6c)

Thu 5th Midlands turn for the heat, dry and sunny again virtually everywhere, a few isolated showers affected Wales and Marches (CITE 31.2c hottest in UK, Pershore 30.8c, Shawbury 26.8c, Mumbles 26.0c, Lwn 25.7c, Aberdaron 18.0c)

Continuation of the very warm/ hot spell into second week of the month:

Maxima Midlands 28 -30c and WW generally 23 -26c , cooler some coasts/ hotter some inland spots e.g.Lwn 28.8c Sat 7th while Aberporth had some mist for a time max 20.2c (CITE 30.0c, Pershore 29.9c)

Sun 8th hot sunny (Pershore 31.2c, CL 30.0c, Lwn 30.3c, Porthmadog 29c, Pembrey 27.9c, Aberporth 22.1c)

Tue 10th heatwave eased but still warm with some sunshine (Lwn 26.1c, MH 24.6c, Newport, Salop 25.9c, Pershore 24.6c, Aberporth 20.0c)

Thu 12th drought broken locally by a scattering of showers over Wales and Marches (Swydffynnon 6.8mm), still pretty warm (generally 21 -25c (CITE 26.5c warmest in UK)

Fri 13th showers and thunderstorms more widespread, especially West Midlands (Hereford 14.0mm), Worcester also had a deluge..

Warm to quite hot still mid month and mostly dry...Sat 14th Wellesbourne 27.5c, Lwn 26.8c, Shobdon 26.1c, Trawsgoed 23.6c, Aberdaron 18.5c and Sun 15th (CL & Pershore 27.6c, Lwn 25.8c, Trawsgoed 25.1c, Aberporth 23.7c, Aberdaron 19.1c; Shawbury & Shobdon 26.8c)

Mon 16th very warm Midlands, turned much cooler after weak cold front WW. Some rain or showers, isolated thunder, most places getting little if any rain (Aberporth 19.6mm, wettest in UK, Lwn 1.7mm). Drought continues Coventry and Rugby in spite of a shower giving a few mm over E Coventry afternoon (Pershore 27.4c, Shobdon 23.3c, Lwn & Trawsgoed 22.2c, Aberdaron max 15.7c)

Thu 19th absolute drought goes on much of Midlands, at Coventry its now 28 days long and Long Lawford 33 days! The past (non calendar) month has seen 320.2 hrs sun at Coventry - the sunniest calendar month there being 284.6 hrs in July 1990. Past few days though less warm. Cool minima much of Wales (Llanwnnen 4.1c, Tirabad 5.5c, Shobdon 9.6c, Mumbles 14.7c, Nottingham 14.8c)..Warming up again though today especially Midlands (Pershore 27.4c, CL & Coventry 27.2c, Lwn 25.0c, Trawsgoed 22.8c, Mona 22.6c, Aberporth 18.4c)

Fri 20th much of Midlands still very warm, cold front introduced cooler air with some rain to Wales, some of this rain affected Midlands later, while parts of East Midlands caught a downpour by evening. Llanwnnen 2.7mm here enough to end/ postpone the original partial drought here as we have now had all of 11.3mm since June 10th (40 days). However with only 8.4mm since June 16th that would mean a new shorter 35 day partial drought is still running. Bablake and LL/ CL had a drop of rain but not measurable so drought continue there (35 days LL). A PWS near Wellingborough, Northants had 28.7mm during the evening, much in one hour (CL 27.5c, Shawbury 22.0c, Lwn 22.6c, MH 22.1c, Aberdaron 15.3c; Valley 9.4mm)

Sun 22nd heat back Midlands, warm for WW (Pershore 29.8c warmest in UK, CITE 28.5c, Lwn 26.1c, Trawsgoed 24.6c)

Mon 23rd hot, plenty of sun Midlands, rather cloudy but warm WW (CITE 31.0c, Coventry 30.5c, CL 30.0c, Hereford 26.8c, Trawsgoed 24.6c, Aberdaron max 17.2c)

Thu 26th Varied temps last night from very cool at some rural inland Wales locations to warm for some coasts (min Lwn 4.4c, Tirabad 5.0c, Mumbles 15.1c, Coventry & Nottingham 14.7c, Shobdon 8.0c). Another heatwave, especially inland Wales and Midlands, very hot much of Midlands, cooler but still warm for most coasts..(Wellesbourne 32.6c, CL 32.3c, Coventry 32.1c, Shobdon 28.9c,  Lwn 29.8c [suspect its reading a couple of degrees over this Summer on hot days due to concrete like baked lawn], Trawsgoed 27.0c, Aberdaron 21.8c). Long Lawford drought now 40 days!.

Fri 27th parts of East Midlands caught a shower or thunderstorm overnight into morning, generally a warm night but locally cool (minima Mumbles 17.7c, Coventry 17.6c, Nottingham 17.5c, Lwn 10.9c, Shobdon 8.0c). Hot again much of Midlands...thunderstorms affected parts of East Midlands 
pm, thunder heard LL; cooler with some rain or showers WW (Nottingham 29.4c, CL 29.3c, Shobdon 28.4c, Aberporth & Trawsgoed 23.2c, Lwn 20.7c, Aberdaron 18.8c)

Sat July 28th end of second instalment of the Lwn partial drought (41 days since June 16th) with a thunderstorm in the early hours and further showers totalling 7.1mm overnight.
End of LL and CL 41 day absolute drought after showers this morning and with the Coventry one ending with showers and longer spells of rain afternoon, at 37 days here it was second only to Summer 1976 which was 39 days long. A much cooler, fresher, windy and unsettled interlude this weekend! Plenty of blustery showers, hail and thunder in places..(Cov both), and longer spells of wet weather too so parts of Wales ended up with over two inches judging by the radar (Wellesbourne 21.8c, Pershore 20.8c, Mumbles 18.4c, Shobdon 18.7c, Aberdaron 16.1c; Mumbles 29.2mm)

Sun 29th  24 hours totals to 0900 Lwn 23.8mm, Bablake 13.2mm, LL 6.2mm (Capel Curig 51.2mm 24 hrs to 2100 wettest in UK)

Nature notes

Bird song greatly diminished by first week of July, just the occasional Thrush, Blackbird, Blackcap and Chiffchaff

Some trees and shrubs being affected by heat/ drought stress, and losing leaves or having them go brown. One of the Apple trees in our garden lost many of its leaves at the start of the month, a severe prune and since then regular watering has let it recover with fresh shoots and leaves by mid month.
Have seen Silver Birch in stress and also an Oak as well as various unknown shrubs such as in the Morrison car park in Carmarthen.

Demise of most Foxgloves early in the month.

Mid July: very few slugs or snails evident since mid June now

Mid July: lawns not cut since mid June!

Wed July 19th one to watch I was told by someone working there that major renovations of Lampeter Old Building due starting this Winter. Sureveyed Swifts there tonight and evidence of at least 17 nests (or at least holes being used by the Swifts) with 25 - 30 screaming above the building..what a loss to the town without this phenomenon in future Summers :(

Grannell river little more than a half width trickle much of its course, in places you could walk across without getting your shoes wet as the depth is below 2 inches at some points, at others with ponding its still perhaps 6 inches deep. Surprised close to month end before the rains came that the streams on the flanks of Mynydd Pencarreg were still though barely in flow (trickle) obviously still water present deep underground.

End of July lawns still not cut since mid June in spite of plenty of rain of late!

Swift chicks still calling from nests Lwn as of 31st, few adult birds around though and no longer screaming as were a week ago.


July 2018 summary


A dry, very warm and sunny month!
Nationally look slike its been the third warmest July on record.
Only a few spots attained average rainfall, most places dry/ very dry in spite of a wet end to the month. The rain at the end of the month broke prolonged dry spell/ droughts in many areas, parts of the Midlands having gone over 40 days without measurable rain! All areas saw well above average temperatures and above average sunshine.

Rainfall totals

Valley 49.6mm (91%)
Aberdaron 47.4mm (84%)
Trawsgoed 42.8mm (51%)
Aberporth 57.8mm (93%)
Llanwnnen 44.8mm (44%)
Milford Haven 69.4mm
Pembrey Sands 37.2mm (50%)
Mumbles 62.4mm (87%)


Nottingham 32.6mm
Shawbury 21.0mm (39%)
Coleshill 25.8mm (53%)
Coventry, Bablake school 35.2mm (60%)
Long Lawford 18.4mm (33%)
Church Lawford 19.2mm (32%)
Pershore 26.6mm (53%)
Hereford 31.2mm (69%)

Personal weather stations:

Bulkington 44.7mm
Coventry, Earlson 43.2mm
Dunchurch 21.3mm
Crick, Northants 15.5mm
Daventry 21.4mm
Banbury 24.4mm
Radford Semele, Leamington Spa 31.5mm
Alvechurch 24.7mm (40%)
Edgbaston, Brum 15.2mm
Harborne, Brum 33.8mm
Stourbridge, Worc 14.2mm

Machynlleth, Powys 53.1mm
Llangeitho 37.8mm
Abermeurig Bont, Talsarn 33.8mm
Llanelli 32.8mm
Lawrenny, Pembs 110.2mm


Sunshine:

Valley 256.5 hrs (147%)
Aberdaron 273.7 hrs
Aberporth 238.9 hrs (126%)
Llanwnnen 222 hours estimated (123%)

Shawbury 248.5 hours
Coventry 265.4 hours