[Geology2] Spectacular Videos of Mexican Colima Volcano Erupting Again (videos)
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Posted by: Lin Kerns <linkerns@gmail.com>
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[Geology2] USGS Seismologist Says Edmond Earthquake Reactivated Fault
USGS Seismologist Says Edmond Earthquake Reactivated Fault
Dana Hertneky, News 9
The earth continued to shake Wednesday in Edmond with another aftershock to Tuesday morning's 4.3-magnitude earthquake.
But a USGS seismologist now says more big earthquakes, magnitude 4.0 or even much larger in the same area are likely.
Dan McNamara said Tuesday's earthquake reactivated a new fault that runs from the Midwest Boulevard and Covell area toward downtown Oklahoma City.
Things started shaking at Covell Wine and Liquor around 5:40 a.m. Tuesday with that magnitude 4.3 earthquake and has been rattling nerves ever since.
"I was here all day and I felt the aftershocks," said owner Stephanie Sanders. "The whole building would shake and you could hear them rattling and it was nerve racking for sure."
But this may not be the end of it.
"When we see these magnitude 4's we get concerned that additional earthquakes could occur," McNamara said.
McNamara said in the past, once a fault is activated in Oklahoma it can produce multiple magnitude 4.0 earthquakes or larger. Larger, because of the type of fault that runs through Oklahoma, called a strike slip fault.
"They have been shown to produce up to Mag. 5.6 and in a few studies we have done at the USGS, we have shown that some of these faults could host earthquakes as big as Mag 6," said McNamara.
That's especially concerning in this case since the fault runs right though a highly populated area.
Staff at the Oklahoma Corporation Commission are working to take action on the Edmond earthquake.
In the past, the OCC had limited capacity on surrounding disposal wells.
McNamara said that seems to have worked and he believes it could in this case as well.
"I wouldn't be surprised to see another 4 but if they do limit disposal it will probably just stay at that level," he said.
That would be welcome news for the Sanders and her husband who were fortunate this time.
"I just worry that there will be a bigger one that will cause a lot of damage," she said.
There have been five aftershocks following Tuesday's earthquake including a 3.0-magnitude Wednesday afternoon.
http://m.news9.com/story.aspx?story=30856815&catId=112032
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Posted by: Lin Kerns <linkerns@gmail.com>
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[californiadisasters] California Disasters' ThreatCon: Watching CNN
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Posted by: Kim Noyes <kimnoyes@gmail.com>
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[californiadisasters] On This Date In California Weather History (December 31)
Bakersfield tied for the 2nd driest December on record; only a trace of precipitation fell during the month.
The Decembers of 1989 and 1930 remain the driest Decembers on record for Bakersfield when no precipitation was measured.
2006: Very heavy rainfall produced extensive flooding in Reno and Sparks, NV.
2004: 29" of snow fell at Tahoe City, with 28" reported at Mammoth Lakes Ranger Station.
2002: A mountain wave generated an 84 mph wind gust at Inyokern, causing a tree to fall over and kill one person.
2001: Quick moving front deposited heavy snow in the Sierra: 19" fell at Mitchell Meadow in 9 hours and 28" fell at Wet Meadows in 11 hours.
1999: A waterspout was observed off the coast of Costa Mesa.
Funnel clouds were reported in Santa Ana and Oceanside.
1990: Low of 24° Fin Fresno.
This was the 24th time all month that the low temperature dropped to 32° F or lower, a record for the month of December.
This also tied January 1949 for the most number of freezing low temperatures in any month.
1986: High tide in San Diego was 7.8 feet.
In Eureka the tide was 9.1 feet, thought to be the highest in a century.
Luckily the weather was fine and surf was small.
Minor flooding occurred at coastal low spots on Mission Beach and Ocean Beach and water lapped at the curbs of streets in Balboa Island, Newport Beach.
1965: A warm storm of torrential rains also melted mountain snow from 12.29 to this day.
One report said more than 13" fell in 24 hours at Mt. Baldy.
Nearly 9" did fall in Lake Arrowhead, and 1.5"-3" in the coastal lowlands.
One drowned in Lytle Creek.
Disastrous flooding and debris flows occurred in the Lytle Creek and Scotland communities, Baldy Village, and in Waterman Canyon.
Two boys were rescued from the Santa Ana River in Colton.
Numerous roads were washed out in the high desert and the mountains.
1955: Mount Hamilton received 9" of snowfall.
1940: Heavy rains that fell a week previous loosened soil along a Del Mar railroad and led to a landslide.
The slide derailed a train and killed three.
1933: A major storm hit Southern California starting on 12.30 and ending on 1.1.1934.
7.36" fell in 24 hours at LA, a 24 hour record for the city.
8.26" fell as a storm total.
Storm totals in the southern slopes of mountains topped 12" (heaviest: 16.29" in Azusa).
45 died all over Southern California in floods.
Walls of water and debris up to ten feet high were noted in some canyon areas.
1931: Yosemite Valley received 2" of snow bringing the total for the month to 54", making it the snowiest December ever on record here.
1918: It was 22° in Santa Ana, the lowest temperature on record.
This also occurred the next two days on 1.1 and 1.2.1919, and on 1.6.1950.
It was 24° in Escondido, the lowest temperature on record for December, and the second lowest temperature on record (lowest was 22° on 1.22.1937).
1913: Reno, NV, recorded 1.74" of precipitation.
1909: A terrible storm dropped 4.23" of rain in San Bernardino on this day and on 1.1.1910.
Lytle Creek and the Santa Ana River flooded at its highest stage in 20 years.
Railroads were severely damaged down to San Jacinto and Hemet area.
Colton was isolated. Damage in San Bernardino was the "worst in history" and homes in the west of the city were flooded.
Highways, water supplies and other utilities were damaged.
A train from LA plunged into the Santa Ana River in Colton.
1900: Only 27 hours of sunshine were observed in Fresno during December 1900.
This is just 9% of the total possible sunshine available for the month, making it not only the least sunniest December ever, but the least sunniest month ever here.
Source: NWS San Francisco/Monterey, Hanford, Reno, Las Vegas, & San Diego
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Posted by: Kim Noyes <kimnoyes@gmail.com>
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