A YELLOW weather warning has been issued for heavy rain for Friday October, 12.
On Friday Storm Callum hits bringing across northern and western Britain strong winds for many areas and a prolonged spell of wet weather throughout Friday and Saturday.
Any and all decisions about school closures will be informed by, as well as prevailing and predicted conditions, any damage that might have been caused to school buildings overnight or at any time during the storm, and whether such damage, - where it exists, - might present a risk to child safety.
South Wales will get up to a month's worth of rain on Friday and Saturday, and double that in high and exposed locations.
On Saturday, areas over high ground could see a further 50 to 80mm of rain.
A combination of winds up to 60 miles per hour and heavy rainfall are set to make driving conditions hazardous - including along the coast at times of high tides.
The county council is urging motorists to avoid all coastal roads, and to only make essential journeys.
"Despite clearance efforts by the Council, the high winds will increase the amount of falling leaves and block drains very quickly, exacerbating flooding" he warned.
"The public are asked to be careful on all roads due to surface water flooding and in coastal areas, especially at high tide". Expect the unexpected. Watch out for falling/fallen debris on the road and vehicles veering across the road.
Pembrokeshire County Council is working with multi-agency partners to monitor the situation.
Bus Eireann has said that they will continue to review their service as Storm Callum progresses, but they advised passengers in Galway and Clare that there will be some minor changes on Route 350 and Route 401, more information on changes will be available here.
Train cancellations will affect those travelling the Shrewsbury to Aberyswyth line through Mid Wales all weekend. "South Wales in particular is a cause for concern".
NRW will issue flood alerts and warnings if rivers reach trigger levels, with teams monitoring river levels 24 hours a day.
'We also have yellow and amber warnings of between 50mm and 150mm of rain for Wales.