Los Angeles, Las Vegas see rare snowfall as storm moves to Northeast, South for the weekend

first_imgABC News(NEW YORK) — As Las Vegas and Los Angeles area residents enjoy rare snow days, a storm is on the move, targeting the Northeast and South for the weekend.Snowfall struck the Las Vegas Strip on Thursday — the most snow the city has seen in more than a decade. Las Vegas schools are closed Friday, giving residents a rare snow day.Flagstaff, Ariz., had its snowiest day in the city’s history with 35.9 inches.Even the Los Angeles area reported snow showers.With the storm on the move, here’s the latest forecast:The storm is centered over the Southwest Friday morning, bringing rain and snow to Arizona, New Mexico, Utah and Colorado.By Friday night the storm will move into the eastern Rockies bringing snow to Denver.At the same time, a frontal system ahead of the storm will bring heavy rain to the South, from Arkansas to Tennessee.The storm will move east on Saturday, bringing heavy snow from Kansas to Michigan.In the South, severe storms are forecast to bring heavy rain, damaging winds, large hail and even a few tornadoes. Flash flooding is also a threat.From Saturday night into Sunday morning the storm will barrel into the Northeast, bringing heavy rain to the Interstate 95 corridor from Virginia to Massachusetts. Heavy snow is expected for northern New England.But the heaviest rain will fall from Shreveport, Louisiana, to Memphis, Tennessee, and into western Virginia. Four inches or more of rain is possible and flash flooding is expected.Copyright © 2019, ABC Radio. All rights reserved.last_img read more

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The Tectonothermal evolution and provenance of the Tyrone Central Inlier, Ireland: Grampian imbrication of an outboard Laurentian microcontinent?

first_imgThe Tyrone Central Inlier is a metamorphic terrane of uncertain affinity situated outboard of themain Dalradian outcrop (south of the Fair Head–Clew Bay Line) and could represent sub-arc basement topart of the enigmatic Midland Valley Terrane. Using a combination of isotopic, structural and petrographicevidence, the tectonothermal evolution of the Tyrone Central Inlier was investigated. Sillimanite-bearingmetamorphic assemblages (c. 670 degreesC, 6.8 kbar) and leucosomes in paragneisses are cut by granite pegmatites,which post-date two deformation fabrics. The leucosomes yield a weighted average 207Pb/206Pb zircon ageof 467 +/- 12 Ma whereas the main fabric yields a 40Ar–39Ar biotite cooling age of 468 +/- 1.4 Ma. Thepegmatites yield 457 +/- 7 Ma and 458 +/- 7 Ma Rb–Sr muscovite–feldspar ages and 40Ar–39Ar step-heatingplateaux of 466 +/- 1 Ma and 468 +/- 1 Ma, respectively. The metasedimentary rocks yield PalaeoproterozoicSm–Nd model ages and laser ablation inductively coupled plasma mass spectrometry detrital zircon U–Pbanalyses from a psammitic gneiss yield age populations at 1.05–1.2, 1.5, 1.8, 2.7 and 3.1 Ga. Combined,these data permit correlation of the Tyrone Central Inlier with either the Argyll or the Southern HighlandGroup of the Dalradian Supergroup. The inlier was thus part of Laurentia onto which the Tyrone ophiolitewas obducted.last_img read more

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