Hamilton takes record 69th pole
Stroll second and Ocon third after penalties for Red Bull drivers applied
Qualifying started at 13:00 BST before Grosjean crashed five mins in
Heavy rain meant qualifying did not restart until 15:40 BST
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A solid effort by Robert MacPhee:
There was a Frenchman from Haas
Whose language was crass
To Italy he went
And his wheel got bent
From having a very wet crash
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Megan Walton: Was depressed to be in work missing quali, but not so much now!
Mark Meadows: Can't blame the drivers, they can only do what FIA allow them to do, several would rather be out
Dan Bell: F1 has gone soft. Some of the best races have been in the wet. Spa 1998 for example
Image source, Rex FeaturesNone of the teams are sailing paper boats down the pit lane.
The soul of F1 is being torn out piece by piece.
Next update at 14:30 BST.
In a nod to providing a smidgen more info, race control adds that there will be a 10-minute warning before any restart.
Spray flying.
Another 15-minute delay looms.
Jennie Gow has grabbed a word with four-time champion Alain Prost:
"it looks like as soon as soon as we have have heavy rain we have to face this situation," the Frenchman says.
"I don't know what is happening with the cars and tyres but we cannot take risks with the drivers. But it's hard to accept for the fans.
"In my opinion - it is raining now - we will have to wait at least another half an hour for sure."
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Andrew Benson
BBC Sport’s chief F1 writer in Monza
Two main issues here: 1) cars run v low & are prone to aquaplaning; 2) drivers don't trust the 'extreme' wet tyres
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Milo Appleby: Formula One is now a dry weather sport
Mark: When did F1 become a dry weather sport?
Paul Claeys: What an absolute farce
Predaluck: Remember when Formula One cars could drive in the rain?
Image source, Getty ImagesGmmmmmph.
Drivers are strapping into their cars again in the event they get the green light to go qualifying.
It looks wetter than the last time it was out there.
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Andrew Evans: Drivers under pressure to race and push in conditions they know are unsafe... How soon we forget the lessons of 2014, eh?
Dave McManus: Got to restart now. Lightest rain all day at Ascari
Shane Daly: Gone are the days where racing drivers actually raced their cars, let them out and let us see them actually have to drive
Image source, ReutersRace director Charlie Whiting has been speaking again:
"We can't get a very clear picture of what might happen. We are still waiting for water to drain off the track and then we will have to do the best we can to read the radar and see if this will clear up."
On Romain Grosjean's crash: "When we decided to go after that the conditions got a little bit worse. Unfortunately these things happen from time to time when drivers are pushing."
A collective sigh seemed to emanate from the pit lane just then.
Marcus Ericsson in the Sauber looked mighty unimpressed as he removed his head restraint and stepped from his car.
How much longer?
This will determine the update we get in around three minutes' time.