The yellow warning has been issued for strong gusts of wind up to 60mph - and up to 70mph in exposed and hilly areas - which would be coupled with very heavy rain.
Weather warnings have been put in place from 6am on Friday across western parts of the United Kingdom, as torrential rains and heavy winds are set to strike the country.
A amber warning for rain will be in place for parts of Wales on Thursday, with rainfall of up to 160mm expected to fall and the possibility of flooding.
Storm Callum is set to hit various parts of the United Kingdom with wet and windy weather conditions, including Edinburgh, but what can we expect when the storm arrives?
"Winds will be strongest overnight and early on Friday, gusting between 110 and 130 km/h at coasts".
The Met Office has warned there is a chance of homes and businesses becoming flooded and that delays and cancellations of public transport are possible.
OnePlus 6T will be revealed on October 30th
OnePlus confirms that no devices will be for sale on the day (but there may be goodies including the Bullets Wireless headphones). The OnePlus 6T will come with a feature that few, if any, smartphones in the U.S. have: An in-display fingerprint reader.
F1: Lewis Hamilton wins Japanese GP, Sebastian Vettel finishes sixth
I had lost a lot of downforce, but there was not much I could do. "I am just grateful to have delivered". Force India's Esteban Ocan was ninth while Renault's Carlos Sainz rounded out the top 10.
'Thank You For Choosing Me' - Atiku Reacts To Victory At PDP Primary
Mr Jonathan described Mr Abubakar as a man who has the capacity to take the country to greater heights. You have said it is not something you are going to do alone.
Also issued by Met Eireann at 10:00am this morning, this warning will be in effect for the longer time of 10:00pm tomorrow night through to 12:00pm on Friday. There is a chance of gusts of 70 to 80 miles per hour in the Western Isles during Friday afternoon and evening. Fallen leaves will lead to blocked drains and flooding issues. There are also risks of coastal flooding, and the warning is in place from 10pm Thursday until 12pm Friday. There is the potential for flooding in these areas.
However, the country's heatwave will end this weekend, as Storm Callum is set to bring over month's worth of rainfall in South West England, Wales and parts of northern England by Friday.
A road that was closed after an accident at Slieve Gullion forest park near Newry, Co Down, where a contractor working for Northern Ireland Water died after he was hit by a falling tree as Storm Ali wreaked havoc across Ireland.
Storm Callum is now swirling off the southwest coast and will deepen rapidly over the course of the next 12 hours, according to Midland weather expert Cathal Nolan.
Arriva is also cancelling services between Llandudno Junction and Blaenau Ffestiniog on both Friday and Saturday.
"We would urge drivers to take care in wet conditions". There is the potential for flooding in these areas.