The Sun's storm just hit Earth in 8 minutes!
- Ric Kearbey
- 1 day ago
- 3 min read
Most weather stories start on Earth
Most weather happens in our atmosphere.
Thunderstorms.
Hurricanes.
Blizzards.
Tornadoes.
But today's weather story started 93 million miles away.
Earlier today, the Sun unleashed a powerful solar flare strong enough to trigger radio blackouts on parts of Earth. NOAA's Space Weather Prediction Center reported that an M9.5 flare produced R2 level radio blackout conditions.
That's considered a moderate solar radiation event and is one of the stronger flares we've seen recently.
A giant explosion on the Sun
Earlier today, the Sun basically burped out a massive blast of energy.
That blast raced across space at the speed of light and reached Earth about 8 minutes later.
When it arrived, it temporarily interfered with some radio communications in parts of the world.
Scientists call this particular eruption an M9.5 solar flare.
You don’t need to remember that name.
Just know it was strong enough to remind us that weather doesn’t stop at Earth’s atmosphere.
Wait… how can the Sun affect Earth that quickly?
Think of a solar flare as a giant explosion of energy on the Sun. When the flare erupts, it sends a burst of X-rays and ultraviolet radiation racing toward Earth at the speed of light.
That means the effects arrive in roughly 8 minutes.
Unlike a hurricane that takes days to reach land, a solar flare can affect Earth almost immediately.
What actually got knocked out?
When that radiation slams into Earth’s upper atmosphere, it can temporarily disrupt high-frequency radio communications.
Those radio frequencies are used by:
• Aircraft
• Ships
• Some emergency communications
• Military operations
Most people never notice these disruptions.
But pilots, forecasters, and communications specialists certainly do.
The craziest part
Nothing physically traveled from the Sun to knock out those radio signals.
The radiation itself did the job.
A burst of energy left the Sun.
Eight minutes later, parts of Earth’s atmosphere responded. That is one of the reasons scientists constantly monitor active regions on the Sun.
Space weather is real weather
When most people hear the word “weather,” they think about rain and thunderstorms. Meteorologists think about those things too. But there is also weather in space.
Solar flares, solar storms, and eruptions from the Sun can affect:
• Satellites
• GPS accuracy
• Communications systems
• Power grids
• Astronauts
Fortunately, today’s event was nowhere near the level of the historic solar storms that scientists worry about most.
Still, it was a reminder that Earth’s atmosphere doesn’t exist in isolation.
The Sun is constantly interacting with it.
The story isn’t over yet
The solar flare wasn’t the only thing the Sun launched this week.
Scientists are also tracking a massive cloud of charged particles known as a coronal mass ejection, or CME.
Unlike the flare’s radiation, which reached Earth in about 8 minutes, this cloud of solar material takes days to arrive.
NOAA has issued a G3 Strong Geomagnetic Storm Watch for June 4–5 as the CME approaches Earth.
If the storm performs as forecast, it could produce:
Radio disruptions
Minor GPS accuracy issues
Enhanced aurora displays farther south than normal
Most people won’t notice major impacts, but space weather forecasters will be watching closely.
Nerdy fact of the day
The sunlight warming your face right now left the Sun about 8 minutes ago.
The solar flare that caused today’s radio blackouts made the exact same trip.
That means the effects of a storm on the Sun can begin affecting Earth before you’ve even finished reading this story.
The bottom line
The biggest weather story on Earth today may not have happened on Earth at all.
A powerful solar flare erupted on the Sun and temporarily disrupted radio communications on our planet.
It’s a fascinating reminder that weather doesn’t stop at the edge of our atmosphere.
Sometimes the biggest storm of the day is happening 93 million miles away.
Comments