Monday 15 July 2019

June 2019 weather log

June 2019 weather log

Key:

WW = West Wales
Lwn = Llanwnnen
AG = Aldermans Green, Coventry
CL = Church Lawford
ROW = Ross-on-Wye
CC = Capel Curig
MH = Milford Haven
Mids = Midlands
CITE = Coton-in-the-Elms, Derbyshire
COL = Climatological Observers Link

PWS = Personal weather station




Wed 5th appreciable rain in places, especially parts of Wales (Goggerddan 19.4mm, Shawbury 14.2mm, Bablake 6.0mm, Lwn 5.0mm to midnight)

Fri 7th end to the prolonged relatively dry spell courtesy of the Spanish Met named 'Storm Miguel', particularly wet for WW, over an inch in many areas here, the rain cleared Midlands later but with thundery showers for S Mids...Very cool June day for many, max 13.1c at Lwn (other max Milford Haven 11.6c, Aberporth 12.1c, Mon 15.7c; Shobdon 13.7c, Pershore & Nottingham 15.8c). Rain totals to 2100  Ross-on-Wye 29.0mm, Lwn c 25mm

Sat 8th Lwn total to 0900 45.8mm, the wettest June day here (beating 42.0mm, 6-6-09). Other rain total 24 hours to 0600 Aberporth 37.6mm, Pembrey Sands 37.4mm, Mumbles 31.6mm; while 24 hour total to 0900 GMT 20.0mm at Bablake, Coventry

Sun 9th scattered showers, local thunder,including at Ciliau Aeron as judged by sferics (not heard Lwn)

Very cool, dull and very wet spell mid month:

Mon 10th scattered thunder WW pm inc Lwn with downpours locally, more general rain Midlands where especially cool (maxima CL & Watnall 12.9c, Hereford 17.5c; Aberdaron 14.3c, Lwn 16.3c, Pembrey 18.1c)

Tue 11th exceptionally cool June day, some places below 10c max. Max 9.8c at Llanwnnen the lowest recorded (srb 2006) beating 11.7c from June 2014 and 2015..At Bablake, Coventry max 10.3c made it the coolest June day since 1985 (max 9.9c). Other maxima Tirabad 8.3c, Trawsgoed 10.7c, Mumbles 12.1c; Shobdon 9.9c, Pershore 11.3c). Wet for many areas away from SE Midlands where rain intermittent and light..1 to 2 inches falling widely across Wales and N Midlands as the rain persistant here (Wainfleet, Lincs 75.6mm, Nottingham 40mm, Lwn 26.5mm meas 0900 12th)
Cold June day max 9.8c Llanwnnen; max 10.3c Bablake coldest in June since 1985


Thu 13th further wet weather since yesterday pm and overnight gave over an inch in places (CL 26.8mm, Bablake 25.0mm 24 hours to 0900GMT; Coleshill 34.0mm, Nottingham 32.2mm, Hereford 29.8mm, Tirabad 27.0mm 24 hours to 1200. Many places over 3 inches past week, with Pennerley in Shropshire having had 150mm (6 inches). Here at Lwn there has been 100.8mm in the past 6 days..

Sun 16th weather still rather cool and unsettled making for a very wet first half of June. Figures to this morning (whole June averages bracketed):

Valley 42.6mm (54mm)
Capel Curig 127.6mm (134mm)
Trawsgoed 103.4mm (76mm)
Aberporth 98.8mm (58mm)
Llanwnnen 131.0mm (82mm)
Pembrey Sands 115.0mm (76mm)

Nottingham 115.6mm (63mm)
Shawbury 98.0mm (53mm)
Coleshill 104.8mm (63mm)
Coventry, Bablake 100.2mm (59mm)
Church Lawford 92.4mm (56mm)
Hereford 92.4mm (45mm)

Also its been a very dull and cool month to date:

Sunshine well below average so far, particularly so the NW Midlands and inland Wales (to 15th):

Valley 76.4 hrs
Aberdaron 81.9 hrs
Aberporth 60.7 hrs
Llanwnnen est 35 hours

Nottingham 38.3 hrs
Shawbury 33.8 hrs
Coventry, Bablake 61.6 hrs

Temperatures are running at between 1 and 2c below the 30 year average in most places. Most of West Wales has mean maxima below 16c thus far, ranging from 14.4c at Aberdaron to 16.0c at Mumbles, Swansea (Lwn 15.8c), while the Midlands is at 16 - 18c.

The cool, unsettled conditions eased after mid month turning to a fine, dry spell from about 20th...

Mon 24th weather model have been insisting on near record breaking 850hPa (upper) temperatures next week, in spite of which surface temperatures are modest when mid 30's c may have been expected, it will be interesting how hot it gets Thu - Sat and how much effect the east breeze has..I would presume WW would be favourable for heat and 30c would be assured:

Extreme upper air temperatures predicted for late June above 20c at 850hPa

Yet at the surface modest average temperatures expected. We will see!


Wed 26th warmth and humidity for WW with sunny intervals, Midlands remained overcast and cool with the keen North Sea breeze. Porthmadog max 24.7c warmest in UK (Lwn & MH 23.0c, Mona 18.4c, Hereford 17.9c, CITE 16.9c, Coventry 16.4c, Nottingham 15.2c)

Thu 27th sunny with ENE breeze, very warm WW (above chart way underestimated warmth here whereas more accurate for N Sea influenced Midlands). Max 26.2c, the warmest day of year to date here at Lwn ahead of 24.9c from back in April..other max Porthmadog 27.1c (warmest in UK), Pembrey 26.9c, CC 22.2c; Hereford 23.1c, CL & Nottingham 20.4c

Fri 28th  Heat WW, max Porthmadog 29.5c, Mona 29.2c, Lwn 28.8c, Aberporth 28.4c. Midlands generally reached a more pleasant 22 - 25c

Sat 29th cooled down WW, heat now for Midlands with wind turning more south, max Pershore 32.0c, ROW 31.7c, Astwood Bank 31.6c, cf Lwn 22.1c, Aberporth 16.6c. This spell has given record heat for France, where up to 45c apparently!




Nature notes:

Wed 5th June, Allt-y-Mynydd forest: red and black ' Slave-maker' Ant , first one I ever noticed, it kept hiding from me under stones, they raid similar but differing spp of Wood Ant and take away the larvae and eggs to their own nests, the babies then hatch and behave like the 'Master' Species!



Cuckoo briefly called as leaving 1800 (and the last time heard 2019), still fair few Chiffchaff, WW and Blackcap to be heard...

Thu 13th bleak, very cool damp Allt-y-Mynydd forestry: Splendid show of Labernum along the adjacent lane, just passing peak bloom and has withstood the 'June Monsoon' past week.
Nightjar calling 2150 as getting dark, only for few minutes until disturbed by Crows when I glimpsed it flying away in the half-light. It was in the same area that was clear-fell in 2016 when me and Sophie saw the Nightjars last..

Mon 17th Allt-y-Mynydd (Llwyndrissi) forest: Sought Nighjars at dusk, not disappointed much calling by at least one bird and 2 seen between 22-2230

Plenty of bird song still towards month end, especially in the woodland at dusk




June 2019 summary

Generally dull and very wet; temperatures near or slightly below average

Much of Midlands and parts of Wales over twice the June average. Here at Lwn it was the wettest June since 2012 (218.3mm), however NW coasts of Wales managed average sun and were much less wet..parts of mid Wales and Marches under 75% sunshine.


Rainfall totals:

Valley 61.6mm (119%)
Aberdaron 65.0mm (111%)
Trawsgoed 137.6mm (180%)
Aberporth 120.6mm (206%)
Llanwnnen 149.8mm (220%)
Pembrey Sands 126.2mm (166%)


Nottingham (Watnall) 139.2mm
Shawbury 121.0mm (227%)
Coleshill 134.2mm (214%)
Coventry, Bablake 125.4mm (213%)
Church Lawford 109.6mm (195%)
Hereford 107.6mm (238%)


PWS

Talsarn, Ceredigion 109.7mm
Llanelli, Carms 93.3mm

Bulkington 143.0mm
Easenhall 134.1mm
Clifon-on-Dunsmore 88.6mm
Lilbourne 93.2mm
Daventry 97.3mm
Shirley, Solihull 171.2mm
Edgebaston, B'ham 110.0mm
Harbourne, B'ham 150.1mm
Alvechurch, Worc 154.4mm

Sunshine 

Valley 204.6 hrs 9114%)
Aberdaron 204.7 hrs
Aberporth 165.5 hrs (85%)
Llanwnnen (estimated from webcam captures) 114 hrs (70%)

Nottingham 124.2 hrs
Coventry 150.5 hrs (81%)
Hereford 111.7 hrs (72%)