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November 12th, 2013
03:10 PM ET

Philippine family fought to survive storm

Cristina Gonzales Romualdez says she didn't expect that much water.

She's a city councillor in Tacloban, which took a direct hit from Typhoon Haiyan. She's also the wife of mayor Alfred Romualdez.

But more importantly, on the day of storm, she's a mother of two.

Gonzales Romualdez says she and her daughters swam to safety. She told Kristie Lu Stout that she prayed the entire time, and fought to keep calm for her children.

Watch the video for her dramatic account how it all happened.

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Filed under: Weather
August 23rd, 2013
09:33 AM ET

Why your mobile phone is a weather station

Your smart phone is smarter than you think.

The UK-based OpenSignal has developed an app that crowd sources the weather using data from your mobile battery.

That's right, you can tell how hot it is outside thanks your cellphone's energy source. That's because smartphones have built-in thermometers to track battery temperature to help prevent overheating.

It's something the company discovered by accident. A year ago, OpenSignal discovered a strong correlation between battery temperature and daily temperatures recorded at a weather station.

Its WeatherSignal app, available for Android phones, crowd sources the temperature data from thousands of users who are running the app.

How accurate is the data? And will it be able to predict the weather one day?

Click on to my News Stream interview with OpenSignal co-founder and CTO James Robinson to find out.

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Filed under: Data • Gadgets • Technology • Weather
March 1st, 2013
05:00 PM ET

How do sinkholes happen?

Sinkholes happen fairly often in Florida. But rarely do they occur with such drama.

A 36-year-old man is presumed dead after a sinkhole suddenly opened beneath his bedroom Thursday night. The victim's brother says the crash of the collapse sounded like a car driving through the house.

The sinkhole in suburban Tampa was originally reported to be 100 feet (30 meters) across. An engineer says that is actually the diameter of the safety zone, while the sinkhole is about 20 to 30 feet across.

Sinkholes can suddenly happen when bedrock dissolves but the surface stays intact. The void eventually collapses.

Authorities in Florida currently believe this one happened naturally, meaning the rock was probably eroded away by groundwater. Sometimes manmade situations, such as water main breaks, can be responsible.

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Filed under: Weather
January 14th, 2013
02:18 PM ET

Off-the-charts pollution in China

China's capital has adopted emergency response measures to deal with record smog.

People in Beijing say the air tastes like coal dust and car fumes.

According to state media, the city will remain covered in gray until Wednesday, when the wind will sweep in to the rescue and blow the smog away.

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Filed under: China • Weather
October 29th, 2012
06:54 PM ET

Understanding Hurricane Sandy

As of 2 pm EDT, Hurricane Sandy packed 145 kph (90 mph) winds. At the time, 23 states had issued a Warning or Advisory for wind related to Sandy’s circulation.

The storm is expected to make landfall later Monday evening.

Based on pressure, Sandy is likely to be the strongest storm to make landfall north of Cape Hatteras, North Carolina.

When it hits, Sandy will be undergoing a transition from a "tropical cyclone" to a "wintertime cyclone." Mari Ramos explains the difference.

Sandy’s field of tropical storm-force or greater winds extends nearly 620 1,600 kilometers (1000 miles). That's roughly twice the size of the U.S. state of Texas.

To put it another way, if that wind field were a country, it would be the 20th largest country in the world.

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Filed under: Data • General • Weather