Weather log September 2022
Key:
A warm start to Autumn but soon turned unsettled with low pressure anchored close by:
Thu 1st warm start to Autumn max Porthmadog 24.8c, CITE 24.7c, Newport, Salop 23.8c, Coventry 23.0c, Pembrey Sands 22.6c, Lwn 22.1c, Hereford 22.0c, CC & Aberporth 20.6c. Sunny spells but rather cloudy mid and SW Wales and south Midlands...
Fri 2nd warm for many but with some rain or showers about. Heavy downpours affected WW pm giving an inch or so locally according to the radar including a small area just 5 miles west of here. Max Porthmadog 25.2c.
Sun 4th an inch of rain past 24 hours parts of Wales (Whitchurch 26.4mm). A few thundery showers pm. Another warm day max Coleshill 25.1c and widely 22 to 24c (Coventry & Trawsgoed 23.8c, Lwn 22.3c, MH 20.8c).
Mon 5th heavy overnight rain in places with a band of rain and thunderstorms with spectacular lightning crossing Midlands early hours (inc Coventry & Warks). Wettest day of the year to date here at Lwn with 26.5mm to 0900 this more than during the whole of August. Other rain totals CC 29.8mm, Hereford 17.6mm, CL 10.4mm. Warm sunny spells again maxima widely 21 to 24c (Nottingham 24.5c, Gogerddan & Pershore 23.8c, CL & Coventry 22.9c, Lwn 22.c, Mumbles 20.0c..
Further showers or longer spells of rain in most places again became widespread with more thunderstorms later (shotgun thunder from a close strike here teatime put this laptop out). Another band crossed the Midlands late evening giving an inch or more in a couple of hours locally such as Warwick area (Coventry 13mm between 22 - 2300 BST). Much spectacular lightning again Midlands reported.
Tue 6th another showery but warm day, several torrential downpours here at Lwn with thunder again
Wed 7th widespread showers and thunderstorms pm - Coventry, Rugby and Llanwnnen all had thunder, the worst over Rugby mid afternoon with dozens of strikes within a few miles of the town and several PWS recording around 20mm in one hour, however either side (to the west and east) of the town little rain fell (just 2mm at Church Lawford). That's 3 days on the trot with thunder now here at Lwn which has not occurred in this month before.
A warm but for some areas very wet first week to September.
Rainfall totals to 0900 8th:
Valley 36.8mm
CC 50.0mm (note only 25% of the whole Sept average at this very wet location)
Trawsgoed 42.4mm
Llanwnnen 78.3mm (whole Sept average is 114mm)
MH 35.8mm
NRW (Wales) rain gauges:
Bow Street, near Aberystwyth 40.2mm
Penuwch, Ceredigion 36.4mm
Rhos Ymyrson, 5 miles from Llanwnnen 61.0mm
Cellan (near Lampeter) 91.8mm
Abergorllech, Carms 104.4mm
Rhydargaeau, Carms 81.6mm
Garnswllt, near Ammanford 135.4mm (already above the whole Sept average)
Nottingham 26.4mm
Shawbury 23.0mm
Coleshill 15.6mm (27% of the whole Sept average)
Coventry 26.8mm
Hereford 25.8mm
Mean temperatures for the first week at 17 or 18c and so several degrees above average; 16.9c here at Lwn which a touch above that of August. It has also been a rather dull month to date.
Thu 8th showers or longer spells of rain, still thunder in places but not widespread (a few rumbles heard at Coventry around 1400 from a cell just NE of the city). Parts of SW Wales caught 2 inches today (Whitchurch 31.6mm). First day to fail to reach 20c here this month at Lwn (max 17c). Max generally 18 -20c close to the early September averages (Pershore College 20.6c, Hereford, MH & Nottingham 20.3c, Trawsgoed 19.8c, Market Bosworth & Shobdon 18.9c, Aberporth 17.0c.
Fri 9th showery again, fewer than of late, thunder in these again (especially Midlands). Thunder heard again at Coventry (one cell passed over the city) and Rugby (more distant rumbles). The past 7 days have all now had thunder at least somewhere in Wales and/ or the Midlands!
Mon 12th a drier past few days. Warm and humid today, some rain in places, cooler for wetter N Wales. Warmest day of the month here at Lwn (23.9c) that with a lot of cloud; other maxima Hereford 24.8c, Pembrey Sands 23.8c, Shawbury 21.4c, Mona 17.1c.
Tue 13th Gogerddan max 21.0c the warmest in the UK (Lwn 20.4c, Coventry 19.1c).
Cool north to NW winds around mid month though still largely dry:
Thu 15th Lwn max 15.1c the coolest day since mid June so proper Autumn conditions. Other max CC 14.2c, Aberporth 15.7c, Shawbury 17.2c, Coleshill & Coventry 17.7c, CITE 19.2c, Pershore 20.5c.
Fri 16th Pershore max 19.4c (warmest in UK) this the first day of the Season that no station attained 20c; other max Mumbles & Pembrey 17.1c, CITE 17.0c, CL, Nottingham & Shawbury 16.2c, Lwn 15.6c, Aberporth 14.6c, CC 14.5c.
Sat 17th first air frost of the Season near Tregaron (min Swyddffynnon -0.3c); quite a widespread ground frost for rural areas, air minima Trawsgoed 1.0c, Lwn & Pembrey Sands 1.5c, Pershore 1.8c, Sutton Bonington 2.8c, Coventry 5.9c, Hereford 6.8c, Aberporth 11.9c (and so over 10c milder than inland).
Sun 18th ground frost much more localised overnight, minima Lwn +0.6c, Pembrey Sands 1.6c, Pershore 4.5c, Coleshill 10.8c, Aberporth 11.8c.
Thu 22nd became rather wet across WW & Marches (up to an inch in places, Lwn 15.7mm) but small amounts of rain much of Midlands.
Mostly dry and bright several days from Fri 23rd, just a few scattered showers about before turning much cooler Mon 26th, several very cool days for example:
Wed 27th very cool and showery, maxima Libanus (Powys) 11.6c, CC 11.7c, CITE & Shawbury 12.3c, Lwn 13.1c, Coventry 13.2c, Pembrey Sands 14.6c, Gringley-on-the-Hill 15.8c (Notts), Pershore 16.2c.
Sat 30th a wet and windy last day, over an inch parts of WW locally over 2 inches
Nature notes:
Wed 7th 40 or 50 hirundines (mostly Swallow) above Rhydybont chapel, Llanybydder this evening.
Forestry: large number of small birds in the trees (hard to see) saw a few Coal Tit but most sounded like Goldcrests.
Sat 10th Aberaeron early evening 10 - 15 H Martin.
Mid month north winds seem to have carried most Hirundines south.
Sat 17th think I caught a glimpse of a couple of Swallows from the back window.
Sat 17th snatch of a Chiffchaff call Forestry.
Sat 17th 20 or 25 Collard Dove on wires above a nearby farm this evening, just about the largest gathering of them I have ever seen (to think they were not resident in the UK until the 1950's). A few tens of metres away the Red Kites were feeding (not on Doves).
Late Sept: first reddening Holly berries, many on the turn.
It has been a bumper year for apples, never seen so many (many hundreds on our trees) Often here late frosts in May damage the blossom and so not so many apples.
There have been an abundance of Large White Butterflies all through this month, most times I have gazed at the back garden at least one or 2 flutter over.
Sun 25th walking just outside the village: 7 Swallow, 5 of which on a telegraph wire, several definitely young as being fed by adults which were feeding over adjacent fields. Late in the walk 3/ 4 House Martin above Capel-y-Groes.
Wed 28th a few H Martin & Swallow flew over the edge of the village heading S.
Fri 30th fantastic sight before dusk for 45 minutes after rain and wind cleared of 25 to 30 House Martin feeding above the gardens. Rarely seen so many together. They suddenly disappeared so wondered if they went down somewhere or continued flying? PS I did see also just after they disappeared around 20 small birds rapidly alighting in one of the trees beyond the houses and thought perhaps Pied Wagtails which do suddenly go to roost in trees, however some research said that Martins do roost in trees during migration by quickly setting down in a tight group. It was too fast to know for sure what these birds were though.
September 2022 summary
Temperatures between average and rather warm; rainfall variable between rather dry and wet; dull to average sunshine
Cool spell in the last week prevented it from being a warmer September.
Llanwnnen had its wettest September (srb 2006) just topping 155.2mm in 2017.
Rainfall totals September 2022
Capel Curig, Snowdonia 186.4mm (90%)
Valley, Anglesey 93.8mm (127%)
Trawsgoed, Ceredigion 135.0mm (135%)
Aberporth, near Llangrannog c 80mm (rather wet)
Llanwnnen 158.5mm (139%)
Pembrey Sands, Carms c 90mm (rather wet)
Milford Haven, Pembs 76.0mm (94%)
Mumbles, near Swansea c 70mm (near average)
Nottingham 51.6mm (90%)
Shawbury, Salop 60.0mm (98%)
Coleshill 57.4mm (99%)
Coventry, Bablake School 65.4mm (111%)
CL, Warks 52.8mm (81%)
Pershore, Worc 50.6mm (97%)
Hereford 59.4mm (117%)
National Resources Wales (NRW) rain gauges
Llyn Cefni, Ynys Mon 99.2mm (near average)
Bethesda Quarry (Gwynedd) 135.4mm (75%)
Cwm Dyli (Snowdonia) 240.2mm (82%)
Corris - Aberllefenni (near Cadair Idris mountain) 169.0mm (85%)
Bow Street (near Aberystwyth) 111.6mm (121%)
Frongoch (Devil's Bridge, Ceredigion) 137.2mm (152%)
Penuwch (Ceredigion) 97.0mm (79%)
Rhos Ymryson (near Gorscoch and 5 miles NW of Lwn) 163.4mm (wet)
Cellan (2 miles NE of Lampeter) 176.8mm (164%)
Pencader (Carms) 161.0mm (121%)
Rhydargaeau (Carms) 140.8mm (92%)
Garnswllt (near Ammanford, Carms) 181.0mm (141%)
Felinfoel (near Llanelli, Carms) 103.0mm (86%)
Maenclochog (near Preseli's, Pembs) 204.2mm (151%)
Tenby (Pembs) 69.2mm (69%)
Bolton Hill (near Haverfordwest, Pembs) 99.0mm (93%)
COL stations rainfall
Llansadwrn 97.5mm (96%)
Ludlow, Salop 47.7mm (75%)
Alvechurch, Worc 57.2mm (88%)
Warstock, Brum 56.9mm (86%)
Cosby, Leic 62.2mm (107%)
Hinckley 67.3mm
Towcester, Northants 52.9mm (87%)
Daventry, Northants (PWS) 84.8mm - not so from from Towcester
Sunshine totals
Valley 127 hours (84%)
Llanwnnen estimated 86 hours estimated (68%)
Nottingham 113 hrs (82%)
Shawbury 88.3 hrs (66%)
Coventry, Bablake School 128.5 hours (94%)
Shobdon, Herefordshire 94.1 hrs (63%)
COL stations sun:
Ludlow 96.2 hours
Alvechurch 63.4 hrs
Cosby 107.8 hrs
Towcester 102.6 hrs
