84 F. average high on July 21.
92 F. high on July 21, 2014.
July 21, 2002: Dew points reached 84 degrees at Madison, Morris, and Olivia. This ties the all- time highest dew points seen by the State Climatology Office for Minnesota.
July 21, 1934: Temperature topped out at 113 at Milan. Source: Twin Cities National Weather Service.
Facts, Data & Rumors
On July 21, 1934 the temperature hit 113F at Milan, Minnesota. People often remark "Paul, it was even hotter back in the 30s. Was that global warming too?" Good question. The reality is that the central USA did experience record heat in the 1930s, coupled with punishing Dust Bowl conditions tied to improper land use, overgrazing and over-farming.
What's different this time around? Warming is global - both hemispheres and the oceans - and there's no apparent astronomical trigger. No, it's not the sun, volcanoes, space aliens or Donald Trump's aftershave.
But then again diving into the data, the facts, the science takes time, effort and perspective. Conspiracy theories, mental shortcuts, are so much easier.
Acknowledging climate change doesn't make you liberal. It makes you literate.
An isolated cauliflower thundershower may sprout this afternoon; I expect more widespread storms Friday when a few could turn severe. Dear Santa: a generator would sure look great under the tree this year.
Much of America is sweltering through the hottest weather of the year. The mercury hits 90F here over the weekend but enough Canadian air will leak south to avoid a nasty case of the Dog Days.
Image credit: Jan Null.
* Bloomberg Business takes a look at the link between an intensifying El Nino and the flurry of hurricanes and typhoons in the Pacific.
* The full report from NOAA NCDC is here.
TODAY: Partly sunny, stray T-shower west. Winds: SW 8. High: 83
WEDNESDAY NIGHT: Isolated evening thunder, then clearing. Low: 66
THURSDAY: Hazy sun, more humid. Dew point: 64. High: 87
FRIDAY: Partly sunny and very humid - risk of a T-storm, possibly strong. Late afternoon heat index near 100F. Dew point: 76. Wake-up: 70. High: near 90
SATURDAY: Hot sun. Winds: NW 5-10. Wake-up: 73. High: near 90
SUNDAY: Sticky sunshine, mostly-dry and hot. Wake-up: 74. High: 91
MONDAY: Deodorant Alert. Still steamy with some sunshine. Wake-up: 73. High: 90
TUESDAY: Heavy showers and T-storms. Wake-up: 71. High: 87
"There are too many special interests - and economic interests easily end up trumping the common good." - Pope Francis, Encyclical Letter Laudato Si.
- Greenhouse gases continued to climb: Major greenhouse gas concentrations, including carbon dioxide, methane and nitrous oxide, continued to rise during 2014, once again reaching historic high values. Atmospheric CO2 concentrations increased by 1.9 ppm in 2014, reaching a global average of 397.2 ppm for the year. This compares with a global average of 354.0 in 1990 when this report was first published just 25 years ago.
- Record temperatures observed near the Earth’s surface: Four independent global datasets showed that 2014 was the warmest year on record. The warmth was widespread across land areas. Europe experienced its warmest year on record, with more than 20 countries exceeding their previous records. Africa had above-average temperatures across most of the continent throughout 2014, Australia saw its third warmest year on record, Mexico had its warmest year on record, and Argentina and Uruguay each had their second warmest year on record. Eastern North America was the only major region to experience below-average annual temperatures..."
Image credit above: "Arctic sea ice thickness in autumn as measured by CryoSat-2 between 2010 and 2014." Credit: CPOM.
Photo credit above: "
Image credit above: "This map shows where flooding could occur in Annapolis in a 100-year flood with a 3.7-foot rise in sea level by 2100." (Courtesy Image, HANDOUT).