A tornado watch has been issued for all of the Roanoke/New watercourse valleys eastward to the capital of Virginia space till eleven p.m. The watch can possibly be raised from west to east this night because the cold front, currently approaching the I-77 passageway, moves through. robust straight-line winds stay the best hazard with these storms, however sufficient part shear will exist to provide rotating updrafts which will result in some tornadoes. the prospect of tornadoes is anticipated to extend east of metropolis into the evening with larger shear and instability parameters. when the cold front pushes through, a chilly front can move through around mid-evening, resulting in an evening of blustering westerly to northwesterly winds, that has prompted the current of air warning for metropolis/Blue Ridge and counties northwest of Roanoke, likewise as a a lot of widespread wind consultative. The long winds can possible end in much more widespread tree harm and power outages than the initial cold front can. END UPDATE
UPDATE 2:15 P.M., 10/31/2019: The National Weather Service has issued a tornado watch till seven p.m. for parts of the river natural depression, together with Giles, Pulaski and Wythe counties et al in Southwest Virginia together with Bland, Buchanan, Dickenson, Grayson, Russell, Scott, Smyth, Tazewell, Washington, Wise counties and also the cities of metropolis, beetleweed and Norton. Expect this to be enlarged eastward with time.
UPDATE 11:15 A.M., 10/31/2019: A current of air warning has been issued for metropolis and localities south on the range (Floyd, Carrol, Grayson counties) and localities north and west of metropolis (Botetourt, Rockbridge, Allehany, bathtub counties) with a wind consultative elsewhere. this is often for the potential of fifty mph to sixty mph winds behind the front tonight and early weekday. Some locations can also see robust winds in afternoon and early evening squals. A severe storm or tornado watch is probable later nowadays. END UPDATE
UPDATE 8 A.M., 10/31/2019: A current of air watch has been issued for metropolis and localities on interstate eighty one to the north and westward, with a wind consultative for the remainder of our region, effective vi p.m. this night to hour weekday. To clarify: These wind advisories aren't for the potential of afternoon/early evening storms with high winds, however rather for a lot of persistent and widespread long and early weekday wind gusts behind a chilly front which will possible reach forty mph in most areas and should exceed sixty mph in some locations, particularly ridgetop areas north and west of metropolis. The afternoon/early evening threat of severe storms has not abated, and can possible be lined by a severe storm or tornado watch later nowadays. A band of showers and storms, probably a solid cold front or a series of shorter squall lines, is anticipated to maneuver across the region in some the three to seven p.m. timeframe, with damaging straight-line winds and isolated tornadoes attainable. significant rain is feasible at any time nowadays as waves of showers move through — we tend to square measure still ill from semipermanent drought, therefore widespread flooding issues aren't expected, however tiny streams and ditches out of their banks or road flooding might develop within the a lot of intense downpours. Temperatures can plummet when the front passes a given location this night, with westerly to northwesterly winds reading. Higher elevations west and northwest of metropolis may even see some snow long and early weekday, tho' it's going to troublesome to inform it except everything else processing within the wind. END UPDATE
It would be exhausting to return up with a worse forecast for what's commonly trick-or-treat time on Hallowe'en.
After broken rain that might be significant from time to time long Wed into early weekday, we are going to in all probability see it quiet for a short while throughout the day weekday. however associate degree approaching robust front can bring another band of rain and thunderstorms through the region late weekday afternoon into mid-evening, with the likelihood not just for significant rain however domestically damaging winds likewise with probably severe thunderstorms in a minimum of some locations.
The atmosphere can have enough spin from robust winds aloft that isolated tornadoes can not be dominated out with the stronger storms, particularly in locations south and east of metropolis which will have larger instability. The Storm Prediction Center has already placed abundant of our region associate degreed most of Virginia at intervals an "enhanced risk" of severe storms on weekday, that is that the third highest level of five, signifying the probability of fairly various storms reaching severe level.
There will be fairly blustering winds each before and when the storms with this dynamic storm system. Once the rain and storms push past, a chilly front can move across the region weekday evening, followed by blustering westerly to northwesterly wind gusts and a speedy call in temperatures. The drop are going to be quick enough that some snow showers can possible develop within the higher elevations west of metropolis, with lightweight accumulations attainable in WV's mountains and maybe the very best ridges of Virginia close to the West Virginia borderline. do not be shocked if some flakes blow into the river natural depression or onto the range late weekday night and early weekday.
This dramatic Hallowe'en of weather can originated a placid, cool amount of principally 50s highs and 20s/30s lows through the weekend and into next week.
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