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yellow Warnings have been issued for Glasfynydd (Usk Reservoir), Wales

Glasfynydd (Usk Reservoir)

Glasfynydd (Usk Reservoir) last 24 hours
  • 17°C 11°C
    Drizzle
  • 19°C 13°C
    Cloudy
  • 16°C 10°C
    Overcast
  • 14°C 8°C
    Cloudy
  • 16°C 9°C
    Sunny intervals
  • 17°C 10°C
    Cloudy
  • 15°C 7°C
    Cloudy
Saturday   (27 May 2017)
0900 1000 1100 1200 1300 1400 1500 1600 1700 1800 1900 2000 2100 2200 2300
Sunny intervals Cloudy Thunder Light rain Fog Mist Light rain Drizzle Fog Overcast Overcast Light rain Cloudy Cloudy Cloudy
Temperature (°C)
16 16 15 14 14 13 13 13 13 13 13 13 13 12 12
Feels like temperature (°C) arrow down
12 14 13 12 11 11 10 10 10 11 11 11 11 10 10
Precipitation probability arrow down
<5% 10% 70% 60% 30% 30% 50% 40% 20% 20% 20% 50% 10% 10% 10%
Wind direction, speed & gust (mph) arrow down
SE 21 32 SSE 15 24 S 14 26 SSW 14 26 SSW 14 26 SW 15 30 SW 16 31 WSW 16 31 WSW 16 30 WSW 14 26 WSW 12 24 WSW 12 23 WSW 12 23 WSW 11 21 WSW 10 20
Visibility (E = Excellent, VG = Very Good, G = Good, M = Moderate, P = Poor, VP = Very Poor) arrow down
VG G M P VP P VP VP VP M G G G M M
Humidity arrow down
92% 91% 92% 95% 96% 97% 98% 97% 97% 94% 92% 93% 93% 94% 95%
UV index arrow down
2 2 3 3 4 4 3 3 2 1 1 1 1 0 0
Sunday   (28 May 2017)
0000 0100 0200 0300 0400 0500 0600 0700 0800 0900 1000 1100 1200 1300 1400 1500 1600 1700 1800 1900 2000 2100 2200 2300
Overcast Mist Cloudy Mist Mist Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Light rain Light rain Light rain
Temperature (°C)
12 12 11 11 11 11 11 12 12 13 14 15 16 17 17 18 18 18 17 17 16 15 15 14
Feels like temperature (°C) arrow down
10 10 10 10 10 11 11 11 12 13 14 15 16 16 17 17 17 17 16 15 15 14 14 13
Precipitation probability arrow down
10% 20% 10% 20% 20% 10% 10% <5% 10% <5% <5% 10% 10% 10% <5% 10% 10% 10% 10% 10% 10% 40% 50% 60%
Wind direction, speed & gust (mph) arrow down
WSW 9 19 WSW 8 17 WSW 7 14 W 6 12 W 5 9 W 4 7 N 3 6 N 3 6 NNE 4 7 NNE 3 7 NE 3 8 ENE 3 8 E 4 9 E 4 10 E 5 11 E 6 13 E 7 14 E 7 15 E 8 15 E 8 15 E 8 15 E 9 17 E 9 17 E 10 20
Visibility (E = Excellent, VG = Very Good, G = Good, M = Moderate, P = Poor, VP = Very Poor) arrow down
M P M P P M G VG VG VG VG VG E E E E VG VG VG VG VG G G G
Humidity arrow down
96% 96% 95% 96% 97% 95% 93% 91% 87% 81% 77% 72% 68% 65% 63% 62% 60% 62% 66% 68% 75% 78% 81% 87%
UV index arrow down
0 0 0 0 0 0 1 1 2 3 3 4 5 6 5 4 2 2 1 1 1 1 0 0
Monday   (29 May 2017)
0000 0100 0400 0700 1000 1300 1600 1900 2200
Heavy shower night Heavy shower night Drizzle Drizzle Cloudy Overcast Overcast Cloudy Light rain
Temperature (°C)
14 13 13 13 14 15 15 13 11
Feels like temperature (°C) arrow down
12 11 11 12 14 15 14 12 10
Precipitation probability arrow down
70% 70% 50% 40% 20% 20% 10% 10% 50%
Wind direction, speed & gust (mph) arrow down
E 11 22 E 12 22 E 10 20 ESE 8 15 SE 5 12 SW 7 15 SW 8 18 WSW 8 18 WSW 9 18
Visibility (E = Excellent, VG = Very Good, G = Good, M = Moderate, P = Poor, VP = Very Poor) arrow down
M G M VP M G G M P
Humidity arrow down
89% 93% 96% 98% 94% 89% 89% 92% 96%
UV index arrow down
0 0 0 1 2 4 2 1 0
Tuesday   (30 May 2017)
0100 0400 0700 1000 1300 1600 1900 2200
Overcast Overcast Cloudy Light rain Light shower day Cloudy Sunny day Clear night
Temperature (°C)
10 10 10 12 13 14 13 10
Feels like temperature (°C) arrow down
9 8 8 10 11 12 11 9
Precipitation probability arrow down
20% 10% 10% 50% 40% 10% <5% <5%
Wind direction, speed & gust (mph) arrow down
WSW 9 18 WSW 10 20 WSW 10 21 WSW 12 24 WSW 11 24 W 11 25 W 10 21 W 8 14
Visibility (E = Excellent, VG = Very Good, G = Good, M = Moderate, P = Poor, VP = Very Poor) arrow down
M G VG G M VG VG VG
Humidity arrow down
95% 95% 92% 92% 89% 73% 70% 84%
UV index arrow down
0 0 1 3 5 3 1 0
Wednesday   (31 May 2017)
0100 0400 0700 1000 1300 1600 1900 2200
Cloudy Partly cloudy night Sunny intervals Sunny intervals Cloudy Sunny intervals Sunny intervals Partly cloudy night
Temperature (°C)
9 8 9 12 15 16 15 12
Feels like temperature (°C) arrow down
7 7 9 12 14 15 14 11
Precipitation probability arrow down
<5% <5% <5% <5% <5% <5% <5% <5%
Wind direction, speed & gust (mph) arrow down
WSW 6 9 SW 4 7 SW 3 7 WSW 5 14 WSW 7 18 SW 7 17 SSW 6 14 SSW 5 8
Visibility (E = Excellent, VG = Very Good, G = Good, M = Moderate, P = Poor, VP = Very Poor) arrow down
VG G G VG VG VG VG VG
Humidity arrow down
94% 95% 90% 76% 67% 65% 65% 85%
UV index arrow down
0 0 1 4 6 4 1 0
Thursday   (01 June 2017)
0100 0400 0700 1000 1300 1600 1900 2200
Partly cloudy night Partly cloudy night Sunny intervals Cloudy Cloudy Cloudy Cloudy Cloudy
Temperature (°C)
10 9 11 14 17 17 16 13
Feels like temperature (°C) arrow down
9 8 10 13 15 15 14 12
Precipitation probability arrow down
<5% <5% <5% 10% 10% 20% 20% 10%
Wind direction, speed & gust (mph) arrow down
SSE 5 7 SSE 5 8 SSE 6 10 S 8 16 S 10 21 SSW 11 23 SW 9 18 SW 7 13
Visibility (E = Excellent, VG = Very Good, G = Good, M = Moderate, P = Poor, VP = Very Poor) arrow down
VG G G VG G G G G
Humidity arrow down
89% 94% 88% 79% 74% 74% 79% 89%
UV index arrow down
0 0 1 4 6 3 1 0
Friday   (02 June 2017)
0100 0400 0700 1000 1300 1600 1900 2200
Cloudy Cloudy Cloudy Cloudy Sunny intervals Sunny intervals Cloudy Clear night
Temperature (°C)
11 10 11 12 14 14 13 11
Feels like temperature (°C) arrow down
10 9 9 11 12 12 11 9
Precipitation probability arrow down
10% 10% 10% 20% 10% 10% 10% 10%
Wind direction, speed & gust (mph) arrow down
SSW 7 13 SSW 7 12 SW 7 13 SW 9 18 SW 10 22 NW 10 22 WNW 10 20 WNW 8 15
Visibility (E = Excellent, VG = Very Good, G = Good, M = Moderate, P = Poor, VP = Very Poor) arrow down
G G G G G G VG G
Humidity arrow down
92% 92% 89% 82% 71% 68% 71% 82%
UV index arrow down
0 0 1 4 5 3 1 0
More Detail chevron down

Issued at: 0800 on Sat 27 May 2017

Forecast summary

Regional forecast for Wales

Very warm and humid with scattered thundery showers.

Today:

It will be a cloudier start with scattered thundery showers giving some heavy downpours for some. These will continue in places especially across north Wales, whilst elsewhere it will become drier with some very warm sunny spells. Humid. Maximum Temperature 23 °C.

Tonight:

Showers will ease through the evening, although some patchy light rain may continue in places. However, turning drier later with some clear spells and feeling cooler than recent nights. Minimum Temperature 11 °C.

Sunday:

Sunday will see a generally fine day with sunny spells, although it will be fresher than recently. Later in the afternoon some torrential, thundery showers will arrive from the south. Maximum Temperature 20 °C.

Outlook for Monday to Wednesday:

Becoming more changeable next week with showery rain on Monday, perhaps heavy and thundery. Tuesday, generally cloudy and damp but brighter and warmer on Wednesday with sunny spells.

Updated at: 0414 on Sat 27 May 2017

UK forecast for the next 5 days

Scattered thunderstorms moving northeast during Saturday.

Today:

Thundery showers will move northeast through Saturday, turning heavier across northern England and southern Scotland during the afternoon. Heavy and persistent rain too for Northern Ireland and western Scotland. Becoming drier across the south and west and still feeling hot.

Tonight:

Outbreaks of occasionally thundery rain will slowly ease northwards overnight, but persisting throughout in the far north. Elsewhere it will be dry with clear spells, feeling cooler than of late.

Sunday:

Rain will continue to slowly clear the Northern Isles through Sunday, elsewhere dry and bright with a fresher feel but further thundery showers arriving from the south in the afternoon.

Outlook for Monday to Wednesday:

On Monday thundery showers will push north with brighter conditions following. Fresher again on Tuesday and Wednesday with light rain in the northwest and drier and brighter conditions further southeast.

Updated at: 0403 on Sat 27 May 2017

Outlook for the UK over the next 6-30 days

UK Outlook for Wednesday 31 May 2017 to Friday 9 Jun 2017:

Mainly dry with some sunny spells in the south and east on Wednesday. Becoming more unsettled in the north and west into Thursday with bands of cloud and rain pushing in from the west, weakening as they move eastwards. The south and southeast still at risk of further humid conditions and thundery outbreaks. Temperatures remaining rather warm. Turning more generally changeable from the end of the week and through the remainder of the period. The northwest tending to see spells of rain or showers with some drier, brighter interludes. Generally drier and brighter further southeast, but some rain at times here too. Windy at times, especially in the northwest. Temperatures generally near normal in the northwest and warm at times in the south and east.

Updated at: 1209 on Fri 26 May 2017

UK Outlook for Saturday 10 Jun 2017 to Saturday 24 Jun 2017:

Confidence is currently low through this period, though we are more likely to see changeable conditions continue through the early part of June. More settled weather may begin to dominate for a time towards the middle of the month, mainly in the south, bringing some drier and brighter weather. Temperatures are likely to be close to normal at first, but may become generally warm, perhaps locally very warm for a time during mid June. By the latter part of the month, there is a possibility of more unsettled conditions developing once more, with spells of rain at times, and temperatures returning closer to average.

Updated at: 1209 on Fri 26 May 2017