When the Weather Brews More Than Storms
As Britain braces for the brunt of Storm Amy, tea drinkers may find something is off with their morning ritual—a weaker, less flavourful brew. According to scientists, the culprit isn’t your teabag or kettle, but the storm itself.
“Temperature does affect brewing of both tea and coffee,” says Dr Simon Lee, an atmospheric researcher at the University of St Andrews.
The Science Behind a Stormy Brew
Storm Amy, currently lashing parts of the UK with fierce winds and heavy rain, is a "weather bomb"—a storm that intensifies rapidly due to a dramatic drop in atmospheric pressure, a process known as explosive cyclogenesis.
This sharp drop in pressure doesn’t just affect the skies. It directly lowers the boiling point of water—from the standard 100°C to potentially below 98°C.
That subtle drop makes all the difference. Black tea, in particular, needs water just off the boil—98–100°C—to release its full flavour. Anything less can result in a weaker-tasting cup, no matter how long you steep your teabag.
Why Pressure Matters to Your Kettle
The boiling point of water decreases as atmospheric pressure drops. While we usually associate this with high altitudes, storms like Amy can cause the same effect at sea level.
“We don’t experience this often in the UK, as we mostly live near sea level,” Dr Lee explains. “But during intense storms, the lower pressure can affect boiling temperatures, even in your kitchen.”
So if your water boils quicker than usual this weekend, it may not be hot enough for that perfect cuppa.
What Makes Storm Amy So Dangerous?
Storm Amy isn’t just ruining tea—it’s bringing serious risks across the country.
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Amber weather warnings are in place for parts of Scotland, warning of strong winds, flooding, and potential power outages.
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Yellow warnings extend across Wales, northern and western England, with wind gusts up to 70mph.
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Scientists are calling it one of the strongest early-October storms in recent memory.
“We expect the storm to intensify to a rate almost twice the threshold for explosive cyclogenesis,” said Dr Lee.
Not Just a Tea Problem: Flood Risks & Safety
Dr Jess Neumann, a hydrologist at the University of Reading, urges Brits to remain vigilant. Areas with dry soil or recent rainfall are at high risk of flash flooding and landslides.
“Even places not directly in the storm’s path could see intense rain and disruption,” she warns. “Being prepared with a flood plan could save lives and property.”
Final Sip: How to Brew Better During a Storm
While we can't control the weather, you can adjust your tea routine:
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Use a thermometer if you're serious about your tea. Aim for as close to 100°C as possible.
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Let the kettle boil longer, especially if you're in a low-pressure zone.
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Use a lid on your teapot or mug to keep heat in while steeping.
And if all else fails—blame Storm Amy, not your brewing skills.
