341 July was the 341st consecutive month with global temperatures warmer than the 20th century average.
Late August Heat Wave
Earth continues to run a low-grade fever: July the 341st month in a row of global temperatures warmer than the 20th century average. NOAA says it was the 6th warmest July, worldwide, since 1880.
The warming has been anything but uniform. I'm seeing more random heat "spikes", surges of intense heat and humidity that come on suddenly.
One such hot front is brewing for next week, and if ECMWF (European) model guidance can be believed, next week could wind up being the hottest of the year for much of Minnesota. Yes, very unusual for late August, considering the sun is now as high in the sky as it was in late April.
Then again "unusual" is the new normal.
Today will be a breath of fresh (Canadian) air, dew points dropping into the 40s behind a welcome cool front. Comfortable weather lingers Friday, but a sticky wave of overheated air returns Saturday, sparking a few T-storms. By Sunday we may be sizzling in the mid-90s. Low to mid 90s are predicted for much of next week. Our on-again, off-again summer will be in high gear; bad news for schools with no A/C.
For 4 weeks we were stuck under a cool, northwest flow. Next week a heat bubble stalls out directly over Minnesota.
Photo credit above: "Storm surge from Hurricane Dennis in 2005." (USGS)
Graphic credit above: "
Among other findings, the report concluded that:
- Warming temperatures have accelerated since the 1970s, with nighttime temperatures increasing much faster than daytime;
- Changes in precipitation patterns have had the effect of decreasing water supplies, even when overall rainfall remains the same;
- Carbon dioxide levels in coastal waters are harming species and having effects throughout the marine food chain;
- Over the past century, water levels have risen along the California coast by an average of 7 inches (18 centimeters), and levels have risen by 8 inches (20 centimeters) at the Golden Gate; and
- Annual acreage burned by wildfires since 2000 is double the rate of the previous 50 years, from less than 300,000 acres to almost 600,000..."