69 F. average high for May 15 in the metro area.
64 F. high temperature on May 15, 2011. Source: NOAA.
12.6 mph: average wind speed yesterday in the cities.
31 mph: peak wind gust at KMSP.
90 F. possible Friday in the Twin Cities, possibly the first 90, and the warmest day of 2012 so far.
"Spring has returned. The Earth is like a child that knows poems." - Rainer Maria Rilke
“Critics are our friends, they show us our faults.” - Benjamin Franklin
...FROST ADVISORY IN EFFECT FROM 2 AM TO 8 AM CDT WEDNESDAY... THE NATIONAL WEATHER SERVICE IN DULUTH HAS ISSUED A FROST ADVISORY...WHICH IS IN EFFECT FROM 2 AM TO 8 AM CDT WEDNESDAY. * LOCATION...AREAS OF FROST ARE EXPECTED ACROSS MOST OF THE NORTHLAND...EXCEPT ALONG THE LAKE SUPERIOR SHORELINE AND SAINT LOUIS BAY. * TEMPERATURE...LOWS TONIGHT WILL RANGE FROM 33 TO 38 ACROSS THE TWIN PORTS...THE BRAINERD LAKES REGION AND MOST OF NORTHWEST WISCONSIN. * IMPACTS...FROST WILL DAMAGE AND MAY KILL SENSITIVE OUTDOOR PLANTS.
Frost on a Wednesday - 90 on a Friday. Don't like the weather? Stick around a few minutes; it'll change. A few models are hinting at 90 in the metro Friday. If the sun stays out much of the day we should see upper 80s, possibly 90 - in all probability the warmest day of 2012 so far.
"The reality is if you put a large tornado over a populated area, people are going to get hurt," said Ken Blumenfeld, University of Minnesota geography professor and tornado researcher.
* image above: Naval Research Lab.
Wednesday Severe Threat. An eastbound cool front may spark enough convergence for a few severe storms from Albany to Worcester, Burlington and Montpelier, Vermont. Map: SPC.
A "Plan B Weekend?" It's still early and the forecast may change (for the better), but we've had a few days/row of fairly gloomy model outlooks. A slow-moving cool front may spark heavy showers and T-storms from the PM hours Saturday into the first half of Sunday; models hinting at some 1 to 1.5" rainfall amounts.
Another Sloppy Nail In The Weekend Coffin. I don't think we'll see a steady rain, or an all-day washout. Precipitation should be convective, showery, with embedded heavy showers and T-storms late Saturday into a portion of Sunday. The latest ECMWF model predicts 19 mm. of rain Saturday and Sunday, about .75" rain.
Photo credit above: "NASA's DC-8 Earth Science laboratory sports numerous probes for collecting atmospheric samples. The aircraft, based at the Dryden Aircraft Operations Facility in Palmdale, Calif., is ready to participate in the DC3 campaign. Credit: NASA/Tom Tschida."
The Deep Convective Clouds and Chemistry (DC3) field campaign will use an airport in Salina, Kan., as a base to explore the impact of large thunderstorms on the concentration of ozone and other substances in the upper troposphere. The campaign is being led by the National Center for Atmospheric Research in Boulder, Colorado, and is funded by the National Science Foundation (NSF) and NASA.
“Thunderstorms provide a mechanism for rapid lifting of air from the surface to higher altitudes in a matter of minutes to hours,” said James Crawford of NASA’s Langley Research Center in Hampton, Va., and a member of the mission’s scientific steering committee.
“This allows molecules that are short-lived and more abundant near the surface to be transported to the upper troposphere in amounts that could not happen under normal atmospheric conditions,” he said.
Paul's Conservation Minnesota Outlook for the Twin Cities and all of Minnesota
"The activist is not the man who says the river is dirty. The activist is the man who cleans up the river." - Ross Perot
As Global Warming Advances, Risky Responses Gain A Following. Here's an important article focused on geo-engineering, using technology to slow or reverse the effects of global warming. Good idea? What could possibly go wrong? Here's an excerpt from MinnPost.com: "A British chemical engineer, Peter Davidson, presented a webinar early this morning on his strategy to combat global warming: Fog Earth’s upper atmosphere with paint particles, streamed from giant balloons, to reflect sunlight away from Earth and offset the greenhouse effects of burning fossil fuel. Plan B, indeed. As the years roll by with essentially no meaningful progress on cutting carbon emissions, “geo-engineering” solutions like Davidson’s attract more attention and perhaps even faith from those inclined to believe that since technology got us into this mess, technology can somehow get us out."
Photo credit above: Columbia Scientific Balloon Facility. "A new paper proposes using large balloons to scatter sunlight and slow global warming."
Photo credit above: "
"Global warming may cause some stocks of fish species to decline, while others may grow. The gastrointestinal system of fish is much more sensitive to rises in sea temperatures than previously thought, according to new research. The researchers found that the gut in fish is the most temperature-sensitive organ. "Our work is largely about trying to identify the physiological bottlenecks, in other words which parts of the body will fail first - whether the heart or the gut is the most sensitive part of the system," said study researcher Albin Gräns, of the University of Gothenburg, in a statement."
"... Asked about the cause of global warming, on the assumption that it is happening, 46% of respondents said that global warming is caused mostly by human activities — a slight decrease — while 37% said that it is caused mostly by natural changes in the environment, 9% volunteered that it is caused by both human activities and natural changes, 5% opted for "none of the above because global warming isn't happening," 2% offered other views, and 1% volunteered that they did not know."
Photo credit above: "The Antarctic ozone hole as depicted by NASA satellite sensors in 2004. Credit: NASA."
Photo credit above: "
Photo credit above: Hawaii from space courtesy of universetoday.com.