Millions of households could experience problems with their television reception over the coming days, Freeview has warned.
The UK's free-to-air digital TV service, which delivers over 100 live channels and radio stations to homes without any subscription fees, has issued an alert running until July 5.
So what's causing the trouble? A stubborn high-pressure system has parked itself over the UK.
As luck would have it, it's exactly the type of weather that doesn't play well with television signals. As such, millions of people across the country could find their reception on the blink over the next few days.
The team behind Freeview is so concerned about widespread disruption that they've issued an alert on their website.
Why does this happen? High pressure interrupts the way that television signals travel in the air. The pressure pushes the signal beamed out by your local transmitter higher into the atmosphere, making it weaker by the time it reaches your aerial.
Even worse, you might start picking up interference from other transmitters that are miles away. These distant signals can clash with your usual ones, leaving you with a fuzzy picture or no signal at all. It's incredibly annoying, but there's nothing wrong with your equipment.
Freeview warned in the alert: "You are advised not to retune your TV during this time, reception will be restored once the high pressure passes."
This is critical advice because retuning your telly or set-top box won't change anything, because the problem isn't actually with your equipment.
Once this latest high-pressure system moves on by the time Sunday rolls around, your normal reception will come back all by itself. Save yourself the hassle and just wait it out.
If there's something on television that you want to watch during this disrupted period, don't panic. You've got plenty of other ways to watch your shows.
If you own a Smart TV that's certified with Freeview Play and an active internet connection, you can stream live and on-demand content instead. Just press channel 100 to access catch-up services like BBC iPlayer, ITVX, Channel 4, and 5 to watch live channels and explore a catalogue of previously aired shows.
You can also download the free Freeview mobile app from the Google Play Store or Apple App Store, or watch directly through your web browser on the Freeview website. You'll need at least 2Mbps broadband speed, and remember it'll use your data allowance.
