The Capital and the surrounding areas can expect heavy rain later on in the evening however, Edinburgh could miss much of the storm.
The forecast deluge poses a risk of communities being cut off by flooding, while high winds are expected to cause disruption across western areas of the UK.
Carlow, Kilkenny, Wexford and Wicklow are expected to experience heavy and persistent rain throughout the day.
The Met Office said the storm could "cause danger to life" as rivers rise and floodwater damages buildings and forces the closure of roads. "In addition, leaves and twigs, brought down by the wind, could block drains and culverts, increasing the likelihood of flooding".
Just three weeks ago the county was rocked by Storm Ali, as winds reached up to 80 miles per hour and caused chaos throughout the county with trees falling and blocking roads at a number of rural locations across the county.More news: Yankees Make Changes to Game 3 Lineup With Aaron Hicks Still Out
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He also urged extra care along the Pembrokeshire coastline.
Storm Callum bringing periods of heavy rain during Friday and continuing into Saturday - particularly over south facing hills.
The deceased, whose gender or age was not given, died at the scene on the A484 near the village of Cwmduad in Carmarthenshire, west Wales, one of the areas worst-hit by flooding, Dyfed-Powys Police said.
NRW has also advised people to take extra care will driving, to avoid walking or driving through any flood water, and to avoid fast flowing rivers and streams.
"The rain is expected to be accompanied by strong winds, which when combined with high tides may lead to some coastal impacts due to large waves", Met office forecasters said last night.
Trains between Preston and Carlisle have been cancelled due to "severe weather".
The Scottish Environment Protection Agency issued five flood alerts for Friday in Argyll and Bute, Ayrshire and Arran, Dumfries and Galloway, Scottish Borders, Skye and Lochaber and Orkney.