July Wind Chill (doing a calendar double-take)
Here's a horrific bit of weather trivia: July is the only month where snow hasn't been reported at an official Minnesota reporting station. The city elders don't like to share that fun nugget.
Roger Kormendy from Prior Lake writes "So for a few days our weather is being influenced by “Canadian Air” as meteorologists around here and probably across the country refer to. My question is, do Canadian meteorologists refer to air invading from the south as “American Air”? Great question. We could use some lukewarm American Air right now.
Forget about glancing blows of fresh air. We're talking CANADIAN OCCUPATION here; a "cut-off" low - a swirl of unusually chilly air breaking off from the main belt of westerlies. Typical for October, but late July? Not so much. I'm predicting a few 30s tonight up in Tower & Embarrass, the Twin Towns of Cold.
After a brisk, bracing, invigorating start (buying any of this weather-spin?) clouds build this afternoon. A stiff wind means only the brave & foolish will be in the water. Sunday looks sunnier; a notch milder. You'll only need 2 T-shirts instead of 4. Deep breaths.
80s return the latter half of next week - but not a 90 in sight.
30s Sunday Morning Minnesota Arrowhead. If skies clear and winds ease a bit temperatures will drop into the 30s over Minnesota's Arrowhead late tonight, maybe mid-30s Embarrass and Tower. Map above: NOAA.
Warming Trend Next Week. No worries - think of this as a mid-summer intermission from heat and humidity. Although no searing heat is brewing anytime soon we will see a rerun of 80s by the middle of next week. The best chance of showers and T-storms: Tuesday, again Friday of next week.
Photo credit: Herbert Stellner III
Map above: SPC reports only 6 tornadoes in Minnesota so far in 2013.
"So for a few days, our weather is being influenced by “Canadian Air” as meteorologists around here and probably across the country refer to it as. My question is, do Canadian meteorologists refer to air invading from the south as “American Air”?
Photo credit above here.
Alerts Broadcaster Briefing, issued midday Friday:
* Tropical Storm Dorian has weakened over the last 24 hours, packing 50 mph sustained winds. It's running into drier air with increasing wind shear, preventing the storm from strengthening to hurricane status for at least the next 4-5 days as it pushes toward Cuba.
* Tropical Storm Flossie expected to weaken into a tropical depression before drifting over Hawaii; capable of torrential rains and significant flooding by Tuesday of next week.
Summary: our goal is to set expectations, and although Dorian is fairly unimpressive (today) we need to continue to collectively monitor this storm, and possible implications for the U.S. Florida stands the best chance of soaking rains from Dorian by the middle of next week; a solution that brings Dorian into the Gulf of Mexico could threaten much of the Gulf Coast with a much more significant storm or possible hurricane. Again, it's too early to make a long-term determination of impacts or possible U.S. landfall at this time. Flossie will probably spark considerable flash flooding over Hawaii by Tuesday-Wednesday of next week. I'm tempted to get on a plane and personally coordinate preparation efforts on Waikiki Beach, but - alas - there's a high probability that won't happen. I'll keep you in the loop with updates - hopefully Dorian's long-term track will emerge from the meteorological noise within the next 48-72 hours.
Graphic credit: Alex Eben Meyer.
Photo credit above: "With low humidity and blue skies for miles, meteorologists say ol’ Dougie Boy is most definitely in love, and it’s for real."
• The incidence of high-intensity tropical cyclones (Safir-Simpson categories 3-5) should increase, and the amount of rainfall in these storms should increase, upping the potential for freshwater flooding. These changes will not necessarily occur where tropical cyclones develop and thrive today. "Indeed," wrote Emanuel, "it is likely that there will be decreasing activity in some places, and increasing activity in others; models do not agree on such regional changes."
• Though experts disagree on this point, Emanuel's work suggests that weak events (tropical storms and Cat 1-2 storms) will become more frequent.
• "Very little work has been done on the problem of storm size," wrote Emanuel, "what little research has been done suggests that storm diameters may increase with global temperature. This can have a profound influence on storm surges, which are the biggest killers in tropical cyclone disasters..."
Photo credit above: "Joshua Tree National Park soon will share its California desert skies with a new close neighbor, a huge solar farm. It's part of a big renewable energy drive on public land." Photograph by Bill Hatcher, National Geographic.
Photo credit: "A drilling rig in North Dakota near the town of Stanley. Fracking is used in this area to tap oil reserves."
Photo credit above: " ." Photo: AFP
Photo credit above: "The huge Ivanpah solar plant is part of a push to expand renewable energy on U.S. federal land. The developer took steps to relocate a population of the endangered desert tortoise, below." Photograph by Jim West, Alamy