Tag Archives: climate

It’s Been A Hot (And Cold) Year—And Here’s The Data To Prove It

Remember the Polar Vortex? After a scorching hot summer in places like California, Arizona, and even Oregon, it’s hard to believe that half the country was freezing cold just a few months ago. But according to Climate.gov it’s been that kind of year—both unusually hot and unusually cold.

The latest U.S. weather data shows that 2014′s temperature extremes—that is, temperatures in the top or bottom 10% of the historical range of values recorded for a given location—have been well, more extreme, than usual.

The graph below illustrates the historical range in extreme temperatures dating back to 1910. The bars represent the percent of the country experiencing extremely hot or cold average maximum temperatures.

Climate.gov explains how 2014 has been such an outlier:

In most years in the record, extremes are significantly lopsided: a given year’s bar is mostly red or mostly blue, sometimes capped with a small segment of the opposite color. In other words, either some part of the country is experiencing warm extremes or cold extremes, but not both. Only a handful of years have a pattern similar to 2014—in which more than 10 percent of the country was experiencing extreme warmth while a similarly large or larger area experienced extreme coolness.

So it’s been a weird year for weather. And according to scientists studying the jet stream, there’s more ahead. That means that depending on where you live, your A/C or heating system is bound to see some action through the end of the year.

And with such unpredictable weather, out there staying indoors doesn’t sound too bad. (Good thing it’s football season again!)

Think Your City’s The Hottest? You May Be Right.

It’s Labor Day. The unofficial end to summer. A day to stop working and remember to put away your white pants. (Or, since it’s a national holiday and you don’t have to work, maybe you didn’t even bother with pants today. We leave that to you.)

But if you live in a city, don’t put away those summertime clothes just yet. According to a new report from Climate Central, cities are hot and getting hotter. Due to the “heat island effect” which traps solar heat in cities’ dark paved surfaces, urban areas tend to be much hotter than their surroundings.

In a survey of 60 cities, the group found:

Single-day urban temperatures in some metro areas were as much as 27°F higher than the surrounding rural areas, and on average across all 60 cities, the maximum single-day temperature difference was 17.5°F.

Check the interactive graphic below to see how your city fares in the study. And most of all—stay cool!

Image credit: James Willamor/Flickr. CC license.