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LARGEST QUAKES so far today -
None 5.0 or larger.
Yesterday, 4/24/14 -
5.9 SOUTH OF FIJI ISLANDS
5.2 SOUTH SANDWICH ISLANDS REGION
5.0 OFFSHORE TARAPACA, CHILE
5.0 VANCOUVER ISLAND, CANADA REGION
6.6 VANCOUVER ISLAND, CANADA REGION
5.0 SANTA CRUZ ISLANDS
Canada - 6.6 quake strikes off northern Vancouver Island coast shortly after 8 p.m. PT. Wednesday evening. A strong earthquake off the west coast of Vancouver Island in British Columbia, shook coastal residents as far away as Metro Vancouver Wednesday evening. The main quake reportedly lasted about 10 seconds. In downtown Vancouver some residents in high rises said they felt their building sway. Glass rattled, buildings swayed, but no damage was reported. The 6.6 quake was followed by a 5.0 aftershock in the same area.
Peru - Ash from Ubinas volcano caused conjunctivitis in residents of Arequipa region. Ubinas volcano continues to erupt - ash has now traveled as far as the peripheries of Arequipa and Puno. There was another eruption on Saturday morning. .Activity at the Ubinas Volcano has led authorities to evacuate 4,000 nearby residents along with nearly 30,000 llamas and alpacas.
TROPICAL STORMS -
Current tropical storms - maps and details.
No current tropical storms.
SEVERE RAIN STORMS, FLOODING, LANDSLIDES -
Severe storms loom across central US this weekend - Forecasters are predicting a significant chance of strong tornadoes this weekend across a large part of the central U.S.
HEAVY SNOW / EXTREME COLD -
Over the winter, as polar vortices plunged the U.S. Midwest into weeks of unceasing cold, the icy covers of the Great Lakes started to make headlines. With almost 96 percent of Lake Superior's 32,000 miles encased in ice at the season's peak, tens of thousands of tourists flocked to the ice caves along the Wisconsin shoreline, suddenly accessible after four years of relatively warmer wintery conditions.
All of that ice takes a long time to melt. As of April 10, 48% of the five lakes' 90,000-plus square miles were still covered in ice, down from a high of 92.2 percent on March 6 ( that constituted THE HIGHEST LEVELS RECORDED SINCE 1979, when ice covered 94.7 percent of the lakes). Last year, only 38.4 percent of the lakes froze over, while in 2012 just 12.9 percent did – part of a four-year stretch of below-average iciness.
As the Great Lakes slowly lose their historically large ice covers over the next few months, the domino effects could include lingering cold water, delayed seasonal shifts, and huge jumps in water levels. Already, the impact of this icy blockade can be felt. On March 25, five days after the official beginning of spring, the Soo Locks separating Lake Superior from the lower Great Lakes opened for the season.
But after a long and harsh winter, Lake Superior's nearly 32,000 square miles were still nearly entirely covered in ice. It would be another eleven days before the first commercial vessel fought its way across Lake Superior – with the aid of several dedicated ice breakers – and down through the locks. The trip across Lake Superior to the Soo Locks, which usually takes 28 hours, took these first ships of the season nine days. A third ship had to return to Duluth after being damaged by the ice.
More than 200 million tons of cargo, mostly iron ore, coal, and grain, travel across the Great Lakes throughout the year. Even a little ice can make a big dent on this total. Only three shipments of coal were loaded up during March – 69 percent less, by volume, than last year. Shipments of iron ore from the northern reaches of Minnesota were so low that the U.S. Steel plant in Gary, Indiana, had to scale back production significantly in early April.
A sluggish start to the shipping season is just one of the cascading effects of the Midwest's cold and icy winter. Some are good, and will allow the region to recover from years of historically low water levels. Others, like this delayed shipping season, less so. Like the shipping troubles, some of the more unexpected things the lakes and their ecosystems could face in the next few months are the direct result of the lingering ice and cold:
Throughout the winter, huge numbers of ducks that feed by diving below the water for fish ended up starving to death. The die-off was "UNPRECEDENTED."
Next in line for concern are a huge number of the Lakes' fish species. Warming water temperature often biologically triggers migration to traditional spawning grounds, and experts expect that Northern Pike, lake sturgeon, steelhead, and rainbow trout could make moves far later this year. Later egg laying could mean younger and far weaker fish come next winter, leading to an even longer impact.
Other changes will come about long after the ice melts, as water levels are predicted to rebound to levels not seen in the last few years. Seasonal shifts in water levels, with winter lows and summer highs, are normal. "If things stayed in sort of a balance, we would see all the lakes water levels going up and then going down. Every year: up, down; up, down. When water levels change a lot over time, something is happening in one of those two parts of the season."
Over the last few years, the summer highs and winter lows have both been well below their long-term average. Though the usual March and April rise in water levels is occurring later than usual this year, already the lakes are seeing water levels that they haven't had for several years. This past March marked the first time since April of 1998 that Lake Superior had reached its long-term average.
And over the next few months, melting snow will feed the lakes and colder water could lower the rates of summer and fall evaporation. The amount of rain could either add to or subtract from this total. The Army Corps of Engineers and the National Oceanic and Atmospheric Administration generally forecast water levels six months out, and predicted levels for this September range from 10 to 13 inches higher than lake levels were a year ago.
Here's what higher lake levels could mean:
Shippers may be hurting now, but higher lake levels will allow them to load more cargo per boat later this year, according to the Chicago Tribune. These higher water lines also mean that those who manage the Great Lakes' harbors won't have to invest huge sums of money in dredging out the bottom. Ships will carry more, at less of a cost, once the ice melts.
Fluctuations in water levels could also help maintain the diversity of plant and animal species along many coastal wetlands. Too many years of consistently low water allows certain species, often non-native plants, to take over.
Though water level changes even over a several year period are normal, the rebound from record-low water levels is going to be a relief from the hand-wringing of the last few years. But it will likely be a temporary one. A hot summer with little precipitation could mute the effects of the icy winter.
And, even if the lakes have more water this year, 2014 could be nothing more than a blip. "We don’t know, as this winter really exemplified, what’s going to happen. If we’re going to have three more severe winters, or flip back to three more winters like we’ve had the past few years."
HEALTH THREATS -
RECALLS & ALERTS
Measles at HIGHEST LEVEL SINCE 1996 - Measles has infected 129 people in 13 states so far this year, the most in the first four months of any year since 1996, officials from the Centers for Disease Control and Prevention reported Thursday.
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