83 F. average high on July 20.
78 F. high on July 20, 2015.
July 21, 2002: Dew points reach 84 degrees at Madison, Morris, and Olivia. This ties the all time highest dew point reading in Minnesota, as recorded by the State Climatology Office.
July 21, 1934: Extreme heat hits western Minnesota, and the temperature topped out at 113 at Milan.
Heat Index Reaches Extreme Danger Zone Today
At the risk of plagiarizing Guns N' Roses "Welcome to the Jungle!" Think of it as a free sauna, without the towels and cucumber-infused water samples.
It could be worse. It won't be as horrific as July 31, 2015, when the Iranian city of Bandar Mahshahr saw a temperature of 115F with a dew point of 90F, resulting in an astonishing heat index of 165F.
On July 19, 2011 the dew point at the airport in Moorhead reached 88F, a new state record. Dew points may brush 80F today, making 96F feel like 110-115F. Excessive Heat Warnings imply a very real threat of heat ailments.
Here's what we know: today will probably be the hottest day of 2016; the most uncomfortably hot weather in 4 years. Friday may be the last day of 90s; T-storms Saturday may be strong to severe as cooler air approaches. Sunday looks like the drier, more comfortable day with a welcome dip in dew point. 80s return next week - still sticky, but not as oppressive as today will be.
Slow down, take frequent breaks, try and stay hydrated - and check in on older friends & family to make sure they're keeping their cool.
First 100-Degree High in 4 Years? You have to go back to July, 2012 for 100-degree air temperatures in the Twin Cities. NOAA's high-resolution 4 km NAM model is predicting 100F by 3 pm, NDFD data peaks at 99F. It'll be close. Model ensemble: NOAA and Aeris Enterprise.
Heat Index: Off The Scale. 118F seems a bit extreme (although not entirely out of the question). I'm leaning more toward peak heat indices in the 110 to 115F range, which means an exceptionally high risk of heat exhaustion and even heat stroke, which can be fatal if not caught early and treated effectively.
Graphic credit: "The running average of global temperatures during 2016."
* More perspective on the record-setting first half of 2016 from Ars Technica and ThinkProgress.
Graphic credit: "Global mean surface temperature, progressive year to date to June 2016." Data source. GISS NASA.
Is "Sweating Corn" Making The Heat Wave Worse? Probably, by at least a couple of degrees. Angela Fritz explains at Capital Weather Gang: "...Corn sweat is an extremely simple way of referring to evapotranspiration, the process by which moisture in plant leaves evaporates into the air. Plants draw water out of the ground through their roots for photosynthesis, and the water in the plant cells is exposed to the air once it gets above the ground. It evaporates off the leaves just as sweat evaporates off our skin — although it doesn’t take place to keep the plant cool, like it does for us. So evapotranspiration is not making things hotter. But it is making things more humid — which can certainly be just as bad..."
Map credit: "
On July 25th the Citizens League will be joining with the Minnesota Conservative Energy Forum to host an event featuring both national and state policy thinkers to explore the growing movement of conservatives embracing both technological and marketplace innovations in delivering energy to consumers. Join us for what will prove to be a surprising and interesting conversation...." (Photo: Michael Nagle, Bloomberg).
Photo credit: "The German-made Volocoptor can take off vertically, offering the potential for use away from airports." Photograph: Volocopter/Nikolay Kazakov.
Photo credit: "
TODAY: Excessive Heat Warning. Broiling sun. Feels like 110-115F Winds: SW 8-13. High: 96
THURSDAY NIGHT: Partly cloudy. Low: 75
FRIDAY: Hot sun, a bit less humid. Feels like 100F. Winds: E 5-10. High: 93
SATURDAY: Muggy with T-storms, some strong to severe. Winds: SE 10-20. Wake-up: 73. High: 88
SUNDAY: Partly sunny, cooler breeze kicks in. Winds: NW 10-20. Wake-up: 70. High: 83
MONDAY: Plenty of sun, breathing easier. Winds: NW 5-10. Wake-up: 68. high: 82
TUESDAY: Partly sunny, no drama yet. Winds: SW 3-8. Wake-up: 67. High: 84
WEDNESDAY: Sticky again, few T-storms around. Winds: SE 8-13. Wake-up: 68. High: 83
Why This Summer Is So Hot, And Why The Future Will Be So Much Hotter. Here's an excerpt from TIME: "...The coming warm spell is just a taste of future summers when heat waves will be stronger and more frequent. Recent research has shown that average summer temperatures post-2050 will regularly top today’s records, unless there are efforts to curb greenhouse gas emissions. “Extremely hot summers always pose a challenge to society,” said Flavio Lehner, a researcher at National Center for Atmospheric Research, following the release of a study on summer heat. “Such summers are a true test of our adaptability to rising temperatures...” (Image credit: CNN.com).
Image credit: "Greenland ice loss has recently contributed to twice as much sea-level rise than in the preceding two decades." (Reuters).
Increased Asthma Attacks Tied To Exposure to Natural Gas Production. InsideClimate News has the story; here's the intro: "Exposure to more intense shale gas development correlates with a higher risk of asthma attacks among asthma patients, according to a new study of Pennsylvania's Marcellus Shale, one of the nation's largest and most active fracking regions. The paper, published Monday in JAMA Internal Medicine, a publication of the American Medical Association, didn't examine the exact cause of the trend. But lead author Sara Rasmussen, a Ph.D. candidate in environmental health sciences at Johns Hopkins Bloomberg School of Public Health, said air pollution and stress are both plausible explanations..."
Photo credit: "Natural gas operations in Pennsylvania's Marcellus Shale region were studied for ties to increased asthma attacks." Credit: Wikimedia.