During a presentation of weather and climate trends at General Mills Tuesday a question came up. "Paul, with more volatility in the system has that made weather forecasting more difficult?"
Short answer: yes.
Weather has always been erratic, severe and generally unpredictable, but I've noticed distinct changes in Minnesota's weather patterns since the late 90s. More rainfall extremes, higher dew points in the summer, wetter springs and milder autumns, on average. And the normal rhythm of fronts and storms seems...off. Like a band playing slightly out of tune. Much of the year our weather seems to be moving in slow-motion.
Maybe I've just been standing too close to the Doppler.
A wave of low pressure rippling north pushes showers and a few T-showers into town later today & Friday. Skies dry out with some sun on Saturday, which may be the best day of the 3-day holiday weekend. T-storms flare up north Sunday; a few severe storms may rumble into the metro late Sunday - some heavy rain spilling into Monday morning. Of course. It's a holiday. Keep your expectations low - you'll never be disappointed.
A cooler, drier front Tuesday gives way to a slow warming trend next week.
Photo credit: Eliot Kamenitz/The Times-Picayune.
Photo credit above: "In a newly published scientific paper, researchers attributed modest uplift in areas of the Sierra Nevada and Coast Ranges across central California to human-caused groundwater depletion in the adjacent San Joaquin Valley. GPS stations such as this one, P311 in the eastern Sierra Nevada, are administered by the EarthScope Plate Boundary Observatory." Photo courtesy of UNAVCO.
Researchers have known for some time that human activity can be linked to localized seismic effects. In particular, much of the debate about fracking in California in the past few years has centered on evidence that the process of injecting large volumes of liquid underground can lubricate fault lines and increase local earthquake risk.
- See more at: http://sfpublicpress.org/news/2014-05/groundwater-depletion-is-destabilizing-the-san-andreas-fault-and-increasing-earthquake-risk#sthash.S1I1Q4xa.dpuf
File photo credit: Marine debris washing up onto the coast of Hawaii courtesy of Wikipedia.
TODAY: Rain develops. Cool and damp. Winds: SE 10. High: 68
THURSDAY NIGHT: More showers, possible thunder. Low: 61
FRIDAY: Lingering showers. Partly soggy. Skies dry out late. High: 74
SATURDAY: Best day? Patchy fog, then intervals of sun. Dew point: 62. Wake-up: 62. High: 79
SUNDAY: Sticky sun, severe T-storms late? Dew point: 67. Wake-up: 63. High: 81
LABOR DAY: Stormy start. Showers taper. Wake-up: 68. High: 76
TUESDAY: Some sun, PM shower risk. Wake-up: 57. High: 75
WEDNESDAY: Plenty of sun, milder. Wake-up: 55. High: near 80
Photo credit above: " .
Image credit: AP/Shutterstock/The Atlantic.
Photo credit above: "Oil and natural-gas companies are very attractive for investors." (Repsol).
Photo credit above: Tim McCabe/USDA Natural Resources Conservation Service. "No-till planting is under way at an alfalfa field on a farm in Montgomery County, Iowa."