A weather fact every morning, from lightning to hail
Lightning is about five times hotter than the surface of the Sun. Hurricanes spin the other way south of the equator. One storm-sized fact a day, right in your calendar.
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What shows up next
When air cools to its dew point, water vapour condenses. That's how dew, fog and clouds form.
Since 2007 the US has rated tornadoes on the Enhanced Fujita scale, from EF0 to EF5, based on damage.
The United States records more tornadoes than any other country, typically more than 1,000 a year.
Jet streams are rivers of fast wind about 9–12 km up, often blowing at over 100 mph.
Thunderstorm clouds (cumulonimbus) can tower more than 12 km into the sky.
The largest US hailstone on record fell in Vivian, South Dakota, in 2010. It was 8 inches across.
El Niño is a warming of the tropical Pacific that shifts rainfall and temperatures around the world.
These 31 facts come from NOAA, the National Weather Service and the World Meteorological Organization. They cover how storms form, the records they've set, and the safety rules worth remembering ("When thunder roars, go indoors").
The calendar also marks the start and end of Atlantic hurricane season every year.
RushOrb: Storm Atlas: A one-thumb 3D adventure where you switch the weather to clear the path.
Get it free on the App StoreHow to add it on iPhone
- Open this page in Safari on your iPhone.
- Tap Add to iPhone Calendar, then tap Subscribe.
- Tap Add. Events appear in the Calendar app within a minute.
On a Mac, the same button opens Calendar. In Google Calendar, use the Google button, or paste https://honestlittleapps.github.io/calendars/weather-fact-of-the-day-calendar/weather-fact-daily.ics into Other calendars › From URL.
Questions
Where are the facts from?
NOAA, the US National Weather Service and the World Meteorological Organization's records. Figures are rounded to be easy to remember.
Is this a forecast?
No. For forecasts and warnings, use your national weather service.
What's RushOrb?
A one-thumb 3D adventure where you switch the weather to clear the path.
Is this calendar free?
Yes. It costs nothing, needs no account and shows no ads. You can unsubscribe at any time.
How do I remove it from my iPhone?
Open the Calendar app, tap Calendars at the bottom, tap the ⓘ next to this calendar and choose Delete Calendar. Or go to Settings › Apps › Calendar › Calendar Accounts › Subscribed Calendars.
Other ways to get it
A daily page you can add to your Home Screen · an RSS feed · a free widget for your website · the press kit