72 Percent of the US Is Experiencing Dry or Drought Conditions

High Park Wildfire, Colorado: USDA via FlickrHigh Park Wildfire, Colorado: USDA via Flickr

The extreme weather that began in June (see Deanna Pan’s MoJo coverage here) has rolled over into July.

Yesterday—only the first day of the month—was brutal enough to shatter 27 records and tie 24 records for the highest ever July temperatures (map below).

US monthly highest maximum temperature records set on 01 July 2012 NASA | National Climatic Data CenterUS monthly highest-maximum-temperature records set on 01 July 2012: NASA | National Climatic Data Center

More amazingly, the first day of the month also broke 6 and tied 11 records for the highest ever recorded temperatures on any date at sites in Georgia (Rome: 108°F), Kentucky (Barren River Lake: 108°F), North Carolina (Tapoco: 106°F), and South Carolina (Grnvl Spart Intl Ap: 107°F).

Extreme drought conditions fueling heatwave and wildfires: NOAAExtreme drought conditions fueling heat wave and wildfires: NOAAPart of what’s fueling the insane heat are the same extreme drought conditions feeding the wildfires out west. (Tim McDonnell’s MoJo wildfire explainer here.)

As you can see in the map above, 72 percent of the lower 48 is now classified as experiencing dry or drought conditions. And don’t expect things to get better soon. 

 

July to September temperature and precipitation predictions (click for larger version): NASA | Climate Prediction CenterJuly to September temperature and precipitation predictions (click for larger version): NASA | Climate Prediction CenterNOAA’s Climate Prediction Center’s drought monitor (above) shows drought, plus anomalously high temperatures, persisting for the next three months. 

Only the Pacific Northwest is expected to harbor below normal temperatures. Seattle, expect a tourist boom.

500 mb chart for 0700 30 June 2012. As high temperature dome slides into the Southeast another is developing in the Southwest:Note that another dome of high pressure is developing in the southwest again: NOAA500 mb chart for 0700 30 June 2012: NOAA The good news is that the high-pressure ridge that brought so much misery to the eastern US is slowly sliding westward.

The bad news is that another one is building behind it in the Southwest.

Heat index: NOAA via WikipediaHeat index: NOAA via Wikipedia

Making matters worse, the extremely high temperatures in the East are abetted by extremely high humidities. Aberdeen, Mississippi suffered 104°F temperatures yesterday. But its dewpoint of 84° at 3 pm made for a heat index (air temp + relative humidity) of a paralyzing 136.

 Sea surface temperatures anomalies on 02 July 2012 (click for larger version): NOAASea surface temperature anomalies on 02 July 2012 (click for larger version): NOAA

As you can see in this map of global sea surface temperature anomalies, the ocean is considerably warmer than average in most of the Gulf of Mexico, and scarily above average off the Eastern Seaboard. That’s like gasoline to the flames of humidity.

(Note also the Mediterranean’s crazy hot water temps and correlate with Spain’s epic heat and wildfires currently underway.)

Tropical Storm Debby rainfall totals: NOAATropical Storm Debby rainfall totals: NOAAThe only force that’s likely to cool off US waters off anytime soon is a tropical cyclone.

The waters around Florida are currently cooler than average (see sea surface temps map, above) thanks to the devastation of Tropical Storm Debby last week.

Fire and brimstone? Or flood and havoc? Doesn’t seem to be a whole lot of comfortable middle ground anywhere these days.

AN IMPORTANT UPDATE

We’re falling behind our online fundraising goals and we can’t sustain coming up short on donations month after month. Perhaps you’ve heard? It is impossibly hard in the news business right now, with layoffs intensifying and fancy new startups and funding going kaput.

The crisis facing journalism and democracy isn’t going away anytime soon. And neither is Mother Jones, our readers, or our unique way of doing in-depth reporting that exists to bring about change.

Which is exactly why, despite the challenges we face, we just took a big gulp and joined forces with the Center for Investigative Reporting, a team of ace journalists who create the amazing podcast and public radio show Reveal.

If you can part with even just a few bucks, please help us pick up the pace of donations. We simply can’t afford to keep falling behind on our fundraising targets month after month.

Editor-in-Chief Clara Jeffery said it well to our team recently, and that team 100 percent includes readers like you who make it all possible: “This is a year to prove that we can pull off this merger, grow our audiences and impact, attract more funding and keep growing. More broadly, it’s a year when the very future of both journalism and democracy is on the line. We have to go for every important story, every reader/listener/viewer, and leave it all on the field. I’m very proud of all the hard work that’s gotten us to this moment, and confident that we can meet it.”

Let’s do this. If you can right now, please support Mother Jones and investigative journalism with an urgently needed donation today.

payment methods

AN IMPORTANT UPDATE

We’re falling behind our online fundraising goals and we can’t sustain coming up short on donations month after month. Perhaps you’ve heard? It is impossibly hard in the news business right now, with layoffs intensifying and fancy new startups and funding going kaput.

The crisis facing journalism and democracy isn’t going away anytime soon. And neither is Mother Jones, our readers, or our unique way of doing in-depth reporting that exists to bring about change.

Which is exactly why, despite the challenges we face, we just took a big gulp and joined forces with the Center for Investigative Reporting, a team of ace journalists who create the amazing podcast and public radio show Reveal.

If you can part with even just a few bucks, please help us pick up the pace of donations. We simply can’t afford to keep falling behind on our fundraising targets month after month.

Editor-in-Chief Clara Jeffery said it well to our team recently, and that team 100 percent includes readers like you who make it all possible: “This is a year to prove that we can pull off this merger, grow our audiences and impact, attract more funding and keep growing. More broadly, it’s a year when the very future of both journalism and democracy is on the line. We have to go for every important story, every reader/listener/viewer, and leave it all on the field. I’m very proud of all the hard work that’s gotten us to this moment, and confident that we can meet it.”

Let’s do this. If you can right now, please support Mother Jones and investigative journalism with an urgently needed donation today.

payment methods

We Recommend

Latest

Sign up for our free newsletter

Subscribe to the Mother Jones Daily to have our top stories delivered directly to your inbox.

Get our award-winning magazine

Save big on a full year of investigations, ideas, and insights.

Subscribe

Support our journalism

Help Mother Jones' reporters dig deep with a tax-deductible donation.

Donate