Postpublished at 14:02
"Get a lap on the board as soon as possible," Mercedes tell Lewis Hamilton on the radio.
The visibility is poor - there's plenty of spray. And there are plenty of cars on the track. Interesting.
Hamilton wins third world title
Rosberg makes mistake in latter stages and Briton breezes past to win
Furious Rosberg throws hat at Hamilton after race
Rosberg 2nd, Vettel 3rd, Verstappen 4th
Kvyat, Hulkenberg, Raikkonen, Ericsson, Grosjean, Massa, Bottas, Stevens out
Gary Rose
"Get a lap on the board as soon as possible," Mercedes tell Lewis Hamilton on the radio.
The visibility is poor - there's plenty of spray. And there are plenty of cars on the track. Interesting.
This could be really, really fun. Wet track. Wet weather. Wet tyres. The qualifying session that was scheduled to begin when the first Back to the Future was filmed, is officially under way.
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Brian's solved the problem of wet feet... sort of.
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Andrew Benson
Chief F1 writer in Austin
“Qualifying is due to start at 0900 local (1400 BST). If the conditions - which would appear to be have improved since Friday, with much less intense rain - mean that is not possible, then the FIA will give it until 1000 before giving up and focusing on getting the race going at 1400.”
With all the excitement of rain and qualifying this morning, we've overlooked the small matter of Lewis Hamilton potentially making history today.
The Mercedes man can wrap up a third title, and become only the second Briton, after Sir Jackie Stewart, to win three championships, and the first to claim back-to-back victories.
Here is how he can do it...
"Why is qualifying on a race day?" I hear you shout at me.
Well, if you weren't with us yesterday, you missed four hours of grueling torture as we sat and chatted among ourselves while qualifying continuously got moved back.
The storms associated with Hurricane Patricia had subsided, but the rain was relentless. It was too dangerous to race.
That didn't stop the teams larking about like pent up children during a wet school holiday - we saw engineers rowing in buckets, Daniel Ricciardo and Daniil Kvyat waltzing and a Force India engineer break dancing.
At least I think we did - I may have just dreamt it all.
There was a practice session earlier in the day, in which Lewis Hamilton was dominant - watch the highlights here.
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You, the general public, helped keep me sane yesterday through four hours of madness. So let's do it again.
As being as it's one of the wettest weekends in F1 history, we've been asking for your favourite rain-affected GPs.
Also, off the back of Andrew's wet-shoe woe, any top tips for drying out wet clothes?
Get involved using #bbcf1 on Twitter.
Andrew Benson
Chief F1 writer in Austin
“So, in case you hadn’t heard, it’s been quite wet here for the last couple of days. How wet? Well, there has been no qualifying yet for a start.
"On a more personal level, I have supposedly waterproof outdoor trail shoes. They were soaked quite early on Saturday. When I got back to the hotel, I put newspaper in them, took it out of one of them and blew a hairdryer into it for 20 minutes, put newspaper back in them, went out for dinner (in different shoes), delayed going to bed for an hour to blow the hairdryer in both of them, put newspaper in them and left them overnight. They were still wet this morning.
“Anyway, although it’s still raining, it has eased off, and it looks like a wet qualifying ought to be able to take place at 0900 local (1400 GMT). After which it’s expected to stop raining before the race start at 1400 (19:00 GMT). It’s been a surreal and trying weekend for everyone in F1, but it should have a pretty exciting, wham-bam end to it.”
After all the frustration of yesterday, we could well be rewarded with a super fun qualifying session in the rain.
And with the conditions drying for the race, in my book we could end up with the perfect day of F1 action. Make a thermos of coffee, grab yourself a giant bag of crisps (or chips for our Texan friends) and put them within arm's reach. It's going to be a stonker of a day.
Hello and welcome to the qualifying session that will never end.
What should have started at 19:00 BST yesterday will now, hopefully, start at 14:00 GMT today.
That's right, it's taken so long to start qualifying, it's changed time zones.
Let's get the important stuff dealt with - how's the weather in Austin?