More news from the deep end at Old Trafford.....
Oh dear, this doesn't look good....
Elsewhere in the South Group, Essex have won the toss and will bowl first against Glamorgan at Cardiff.
They're due to get going there at 18:45 BST.
And in one of our 19:00 BST starts, Hampshire have won the toss and will bowl first at home to Somerset.
In the North Group, Durham have won the toss and will bat first against Derbyshire.
Aha! We have play at Leicester, and an early wicket too!
Foxes opener Harry Swindells survived just five balls before he was caught behind by Adam Rossington off the bowling of Faheem Ashraf. Breakthrough for Northamptonshire.
Mark Cosgrove, a South Aussie who looks like he enjoys a cold schooner of Coopers and clubbing a few balls about, is joined at the crease by Arron Lilley.
Good news from just south of the river where play has begun between Surrey and Gloucestershire at The Oval.
The visitors are batting first and Miles Hammond has already crashed Imran Tahir to the cover fence for an early boundary.
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Sadly Eoin Morgan won't be able to back up his 70 off 37 balls from last night when Middlesex travel to South Group leaders Sussex this evening.
The county say the England one-day captain woke this morning still felling stiff and sore from the excesses of that knock so Max Holden gets the call up.
Middlesex will also be without AB de Villiers tonight but the good news for their supporters is the South African will return for the final two group games and the knockout stages should his side progress to the last eight.
Thursday night saw the second instalment this season of the London derby between Middlesex and Surrey at Lord's.
It was Middlesex who came out victorious by 64 runs thanks to star performances from Eoin Morgan with the bat and Steven Finn with the ball.
Relive the best of the action above.
Wednesday night's T20 Blast action well and truly belonged to Leicestershire captain Colin Ackermann.
The off-spinner set a new T20 record for best bowling figures with 7-18 in his side's 55-run win against Birmingham Bears.
See how Ackermann made history above.
So while we wait for some action to start tonight, let's just give you a little recap of what you may have missed earlier this week....
As ever, our BBC local radio colleagues will have full match commentary of every T20 Blast fixture this evening.
Find your commentary of choice by searching through the live coverage options at the top of the page.
Weather permitting, we'll also have in-play video highlights available for you from the Lancashire v Yorkshire fixture.
So this may well end up being the way things play out this evening.
We're currently between showers at Old Trafford, but as you can see there has been some earlier heavy rain in Manchester and the covers are on so it looks like we will have a reduced number of overs.
No news as yet on a start time or the toss, but they are planning to make a pitch inspection at 18:45 BST....
- Copyright: Reuters
Sadly one name that won't be on the team sheets this evening at Old Trafford is Yorkshire and England leg-spinner Adil Rashid.
The World Cup winner has been ruled out for the rest of this season due to a chronic shoulder issue that he battled with during England's road to the final.
"I enjoy playing for Yorkshire, but it just wasn't meant to be," Rashid said. "The aim was to come back after the World Cup and play for Yorkshire.
"I got through the World Cup with an injection.
"I've played 13-14 years of professional cricket and this is the first time I've suffered an injury to my shoulder."
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Our feature match this evening comes from Old Trafford where one of cricket's oldest rivalries will be renewed.
Lancashire meet Yorkshire in the latest installment with the Red Rose having claimed victory a couple of weeks ago at Headingley by just nine runs in a see-sawing contest.
Fingers crossed we'll be treated to another humdinger in Manchester this evening in front of what's set to be a record-breaking crowd for a T20 domestic fixture outside of London.
More than 23,000 are expected through the turnstiles for this one.
As hinted in our introduction, it's been a bit wet and windy out and about in some parts earlier today.
Might be a few more heavy showers on the way for some parts, while others may get away without a drop.
Here's the latest outlook from our colleagues at the BBC Weather Centre.
We've got nearly a full house this evening with eight games on the agenda.
Take a look at these mouth-watering contests....
Old Trafford: Lancashire Lightning v Yorkshire Vikings (18:30 BST) - toss delayed due to rain
Leicester: Leicestershire Foxes v Northamptonshire Steelbacks (18:30 BST) - Leicestershire win toss and bowl first
Sophia Gardens: Glamorgan v Essex Eagles (18:30 BST) - start delayed until 18:45 BST
The Oval: Surrey v Gloucestershire (18:30 BST) - Gloucestershire win toss and bat first - play due to start at 18:35 BST
Derby: Derbyshire Falcons v Durham (19:00 BST)
Edgbaston: Birmingham Bears v Notts Outlaws (19:00 BST)
Ageas Bowl: Hampshire v Somerset (19:00 BST)
Hove: Sussex Sharks v Middlesex (19:00 BST)
Fingers crossed the weather behaves itself from here!
- Copyright: Getty Images
Big hits, big wickets and possibly....big showers!
Friday night T20 Blast action is back with a packed programme of fixtures.
Eight games on the way all being well and a few big names hoping to grab the headlines once again.