Day 1 of 5 (0600 Monday 28th July to 0600 Tuesday 29th July)

1. General Forecast - SEPD Region
There will be sunny spells today but with some showers also expected. Showers are likely to be heaviest and most frequent in the east where there will be a risk of infrequent lightning
strikes. In western areas, showers should be more isolated but there will still be the risk of very infrquent lightning strikes. Showers will ease in most areas this evening and it will be largely
dry overnight with some clear spells. It will be cooler than previous days.
Mean Dir'n Gust Mean Dir'n Gust Mean Dir'n Gust Mean Dir'n Gust
10 N 20 10 N 20 10 N 20 10 N 20
10 N 20 15 N 25 10 N 25 10 NE 25
10 N 20 15 N 20 10 N 20 10 N 20
10 N 20 15 N 25 10 N 15 10 N 15
Snow (cm) Line Icing Height (m) Snow (cm) Line Icing Height (m) Snow (cm) Line Icing Height (m) Snow (cm) Line Icing Height (m)
0.0 Nil N/A 0.0 Nil N/A 0.0 Nil N/A 0.0 Nil N/A
0.0 Nil N/A 0.0 Nil N/A 0.0 Nil N/A 0.0 Nil N/A
Area
North East North West South East South West
Slough and West London Oxford, Reading & Melksham Aldershot & Portsmouth Poole & New Forest
Risk (RAG) Green Green Green Green
Temp (Max/Min) 23 12 23 12 24 12 23 11
Wind
06h-12h
12h-18h
18h-00h
00h-06h
Rain (mm)
06h-18h 0.8 - 4.1 0.2 - 1.3 1.0 - 9.0 0.4 - 2.7
18h-06h 0 - 0 0 - 0 0 - 0 0 - 0
Snow/Line Icing
06h-18h
18h-06h
Lightning
06h-18h 1D 2D 1D 2D
18h-06h 3 3 4 4
Scheduled Utilities Forecast - SEPD (South) - Monday 28 Jul 2014
Day 1 of 5 (0600 Monday 28th July to 0600 Tuesday 29th July)

2. General Forecast - SEPD Region
A dry day with some warm sunshine for most areas. It should remain dry overnight but it will become cloudier.
Mean Dir'n Gust Mean Dir'n Gust Mean Dir'n Gust Mean Dir'n Gust
10 NW 20 10 NW 20 15 NW 20 10 NW 20
10 N 20 10 NW 20 15 NW 25 15 N 25
10 NW 15 15 N 15 10 N 20 10 N 20
10 N 15 15 N 20 10 N 15 10 NW 15
Snow (cm) Line Icing Height (m) Snow (cm) Line Icing Height (m) Snow (cm) Line Icing Height (m) Snow (cm) Line Icing Height (m)
0.0 Nil N/A 0.0 Nil N/A 0.0 Nil N/A 0.0 Nil N/A
0.0 Nil N/A 0.0 Nil N/A 0.0 Nil N/A 0.0 Nil N/A
Area
North East North West South East South West
Slough and West London Oxford, Reading & Melksham Aldershot & Portsmouth Poole & New Forest
Risk (RAG) Green Green Green Green
Temp (Max/Min) 26 12 26 12 26 12 26 12
Wind
06h-12h
12h-18h
18h-00h
00h-06h
Rain (mm)
06h-18h 0 - 0 0 - 0 0 - 0 0 - 0
18h-06h 0 - 0 0 - 0 0 - 0 0 - 0
Snow/Line Icing
06h-18h
18h-06h
Lightning
06h-18h 4 4 4 4
18h-06h 4 4 4 4
Day 2 of 5 (0600 Tuesday 29th July to 0600 Wednesday 30th July)

3. General Forecast - SEPD Region
Some places may be a cloudy start, but otherwise it
will be another dry, warm day with plenty of sunshine.
Dry overnight with clear skies.
General Forecast - SEPD Region
The generally settled, fine and dry weather will
continue on Thursday. Dry overnight.
General Forecast - SEPD Region
Mainly dry on Friday although there will be the chance
of a few sharp showers breaking out, these possibly
giving very infrequent lightning strikes. The chance of
showers may extend overnight.
Mean Dir'n Gust Mean Dir'n Gust Mean Dir'n Gust
15 SW 25 20 SW 30 20 S 30
Snow (cm) Line Icing Height (m) Snow (cm) Line Icing Height (m) Snow (cm) Line Icing Height (m)
0.0 Nil N/A 0.0 Nil N/A 0.0 Nil N/A
Day 3 of 5 (0600 Wednesday 30th July to 0600
Thursday 31st July)
Day 4 of 5 (0600 Thursday 31st July to 0600 Friday
1st August)
Day 5 of 5 (0600 Friday 1st August to 0600 Saturday
2nd August)
Area
Day Three Day Four Day Five
SEPD Region SEPD Region SEPD Region
Risk (RAG) Green Green Green
Temp (Max/Min) 25 12 26 13 24 12
Wind
24 hours
Rain (mm) 24 hour total 24 hour total 24 hour total
24 hours 0 - 0 0 - 1 0 - 8
Snow/Line Icing
24 hours
Lightning
24 hours 4 4 2D
Days 6 to 10 (0600 Saturday 2nd August to 0600 Thursday 7th August)
Outlook
The unsettled weather is expected to continue through the weekend and into the start of next week. Further showers or longer spells of rain are possible, although there should be some
drier and sunnier/clearer periods too. There are some indications of less unsettled weather for the second half of next week.

4. Rainfall (mm)
12 hr (days 1 and 2) 24 hr (days 3 to 5)
>50 >50
>=25 >25
<25 <=25
Snowfall (cm)
12 hr (days 1 and 2) 24 hr (days 3 to 5)
if 24hr total >=10 >=3 >=5
>1 >=1
<=1 <1
if 24hr total >=5 >1
<=1
if 24hr total <5 any amount
Overall risk of disruption
Severe risk Red
Significant risk Amber
No risk Green
The above reflects the worst case of any of the following
Wind Gusts (mph) - 1st November - 31st March
Direction N/NE/E All other directions
>50 mph Red >70 mph Red
>40 mph Amber >50 mph Amber
<=40 mph Green <=50 mph Green
Wind Gusts (mph) - 1st April - 31st October
Direction N/NE/E All other directions
>40 mph Red >60 mph Red
>30 mph Amber >40 mph Amber
<=30 mph Green <=40 mph Green

5. Line icing
12 hr (days 1 and 2) 24 hr (days 3 to 5)
Severe Severe
other 12hr > Nil Moderate Moderate
other 12hr = Nil Moderate Slight
Slight Nil
Nil
Lightning risk and disruption colour code matrix
Risk level 1 A B C D
Risk level 2 A B C D
Risk level 3 A B C D
Risk level 4 A B C D
Lightning Risk Categories
1 - Lightning will almost certainly occur across the region, or is occurring
2 - Lightning is likely across the region
3 - Lightning is unlikely across the region, although convective activity or an active front is forecast
4 - Lightning is not expected to occur across the region
Lightning Intensity Index
A - Very frequent lightning strikes
B - Frequent lightning strikes
C - Infrequent lightning strikes
D - Very infrequent lightning strikes
All Temperatures in °C
All Wind speeds in MPH