A strong trough of low pressure has been deepening over the Western U.S. this weekend, and will slowly "shear-out" and eject eastward by Midweek. In response to this upper storm system, a surface low pressure center will form over South Texas by Monday-Tuesday, and move northeastward along the baroclinic zone (temperature gradient) by Wednesday. Precipitation driven by strong warm advection over a relatively shallow cold layer at low-levels will develop over Northwest Texas and southern Oklahoma by midday Monday, and spread/develop rapidly northeastward in the Ozarks by later Monday, and into the Ohio River Valley thereafter.
The NAM forecast panels above are valid for Monday evening, with 24-hr precipitation at left and surface-500 mb maximum temperature at right (which is very helpful in determining precipitation type). The NAM (and a majority of other models) are forecasting a quarter to half inch of ice across Oklahoma, with possibly up to an inch of ice accumulation in the Ozarks and points northeastward. While a vast majority of this precipitation will be frozen north of the Red River, the exact precipitation types (snow, sleet, vs freezing rain) are very difficult to pinpoint even this close to the event, especially over Oklahoma into the Ozarks where the low-level system will just be getting going. For Oklahoma, I've seen several of these "late-blooming" events where a significant ice storm is predicted, and much of the OK state is consumed by a massive dry-slot and we nothing as the system verifies further north -- or develops just a little bit too late. While this seemed to happen a majority of the time the last several years here, the crippling ice storm from last year reminded us all in Central Oklahoma that it can still happen.. As seen above, the maximum column temperature is forecast to be well-above freezing over most of the precipitation area, except for the northern part - where precipitation type will be predominantly sleet and snow. The central and southern part of the winter storm watch area (as seen below) will be pounded by sleet and freezing rain, and possibly changing to all rain depending on the exact track of the system.
video van de ijzelstorm vorig jaar
TVN will be streaming live from Norman, OK during this event, so stay tuned for updates!
© Tornadovideos.net
NWS STORM PREDICTION CENTER NORMAN OK
1054 AM CST MON JAN 26 2009
AREAS AFFECTED...ERN OK...NWRN AR...SWRN MO
CONCERNING...FREEZING RAIN
VALID 261654Z - 262100Z
FREEZING DRIZZLE ALREADY COMMENCING ACROSS PORTIONS OF CNTRL AND WRN
OK WILL SLOWLY SPREAD EWD INTO ERN OK...NWRN AR...AND SWRN MO.
ALTHOUGH RATES OF ACCUMULATION WILL INITIALLY BE LIGHT...A TRACE TO
0.01 INCH AN HOUR...EXPECT A GENERAL INCREASE TOWARDS 00Z...WITH
MORE SIGNIFICANT ACCUMULATIONS ACROSS ERN OK...NRN AR...AND SRN MO
THEREAFTER.
ARCTIC AIRMASS AND SUBFREEZING TEMPERATURES ARE LINGERING ACROSS
MUCH OF OK/AR/MO THIS MORNING AS SURFACE HIGH PRESSURE REMAINS OVER
THE NRN PLAINS. PREVIOUSLY DRY AIRMASS IS UNDERGOING MODIFICATION AS
MOISTENING OF LOW LEVELS GRADUALLY OCCURS. 12Z SOUNDING ANALYSIS
SHOWS SATURATION HAS OCCURRED THROUGH 850 MB...AND A 35 KT SWLY LOW
LEVEL JET WILL ALLOW GREATER MOISTURE OFFSHORE OF THE BAJA COAST AND
THROUGH NRN MEXICO TO QUICKLY ADVECT NEWD. ALTHOUGH SATURATION WILL
BE SOMEWHAT SLOW TO OCCUR...INITIALLY LIMITING MORE SIGNIFICANT
ACCUMULATIONS...EXPECT RATES TO INCREASE TOWARDS 00Z AS A STRONG
UPPER JET MAX BEGINS TO MOVE FROM SRN CA INTO THE ROCKIES THIS
EVENING. BY 00Z THE LOW LEVEL JET WILL BEGIN TO INCREASE IN RESPONSE
TO HEIGHT FALLS AND THE APPROACHING UPPER JET. ISENTROPIC LIFT WILL
BE STRONGEST ACROSS SERN OK INTO NWRN AR AND SWRN MO AS THIS OCCURS.
..HURLBUT.. 01/26/2009
...NOTICE...
SPC WINTER WEATHER MESOSCALE DISCUSSIONS WILL BE ISSUED ON A
SCHEDULED BASIS FROM DECEMBER 1 THROUGH FEBRUARY 28...FOUR
TIMES A DAY...AROUND 00 UTC...06 UTC...12 UTC...AND 18 UTC
FOR SIGNIFICANT SHORT RANGE WINTER WEATHER EVENTS.
ATTN...WFO...LZK...SGF...SHV...TSA...ICT...OUN...
LAT...LON 34059610 34159769 34929854 35939798 36359708 37069565
37109359 36369227 35349191 34449287 34129466 34059610
bron: storm prediction center | Gewijzigd: 26 januari 2009, 18:36 uur, door Stormchazer
Het Emergency Operations Center (EOC) is op niveau twee activering, waarbij verlengde openingstijden voor het personeel op sleutelposities gelden. De Oklahoma Department of Emergency Management (OEM) in contact met hulpdiensten managers in de getroffen gebieden.
WEERSOMSTANDIGHEDEN The National Weather Service heeft gepost een Ice Storm Waarschuwing voor zeven zuidoost Oklahoma gemeentes, waar ijs accumulaties van ,2,5cm mogelijk zijn. Een Winter Storm Warning is ten noorden van de lijn van Ardmore te Muskogee te Stillwell en ten zuiden van de lijn van Snyder om Ponca City. Een mengsel van sneeuw en bevriezing van regen wordt verwacht op dit gebied en ijs accumulaties van 2,5cm waarschijnlijk.
IJzel is reeds gemeld in het zuiden van Oklahoma City. De omstandigheden zullen snel verslechteren gedurende de hele dag in de Oklahoma City metro gebied. Tulsa en andere gebieden in het oosten zullen beginnen ijzel te zien in de komende paar uur. Door vanavond de oostelijke tweederde van de staat zal waarschijnlijk gevaarlijke verkeer omstandigheden. Sommige gebieden kunnen stroomuitval krijgen. Neerslag blijft waarschijnlijk tot dinsdagmiddag aanhouden.
Daarnaast OEM werkt samen met FEMA om de levering van industriële generatoren die zou worden gebruikt voor de opvang en voor de stroomvoorziening naar de waterzuivering in het geval van elektrische storingen.
Wegomstandigheden De Oklahoma Department of Transportation verslagen bemanningen nauwgezet blijven toezien op de neerslag en conditie van de wegen en interstates. Momenteel zijn de verslagen van de sneeuw valt in de Panhandle, bemanningen zijn clearing besneeuwde wegen in Cimarron County. Elders, bemanningen zijn behandelend bruggen en wegen die beginnen te krijgen slick in de westelijke en centrale delen van de staat. Westwaartse I-40, in de stad Elk gebied en I-35 in Murray County zijn gerapporteerd als glad en gevaarlijk. Chauffeurs moeten alert zijn op snel veranderende omstandigheden in de gehele dag en nacht te rijden voorzichtig en volgens de voorwaarden. ODOT bemanning zal blijven werken de klok rond voor de behandeling van de getroffen gebieden om de snelwegen en interstates duidelijk.
Lokale verslagen McClain County Emergency Management rapporten ijs begint te vormen op de wegen. Er zijn verschillende rollover ongevallen op Hwy 76, Hwy 39, en I-35.
Stephens County Emergency Management rapporten ijs accumulatie op de wegen daar.
Comanche County Emergency Management rapporten wegen zijn ijsvorming en een aantal ongevallen zijn gemeld, geen letsel.
Moore Emergency Management licht bevriezing motregen en drie gewonden.
bron: koco.com. | Gewijzigd: 26 januari 2009, 20:43 uur, door Stormchazer
Stay Tuned To KOCO.com For Complete Weather Coverage
"Oklahomans know all too well that severe winter weather poses serious challenges to everything from roads and power lines to debris removal, and so it is important that we be prepared for the worst," Henry said.
The executive order marks a first step toward seeking federal assistance should it be necessary. Additionally, the executive order allows state agencies to make emergency purchases and acquisitions needed to expedite the delivery of resources to local jurisdictions.
bron: koco
Schools closed and thousands of homes and businesses had no electricity Tuesday as a storm spread a coating of ice and snow on roads and power lines from the southern Plains to the mid-Atlantic states. At least eight deaths had been blamed on the weather. Highway department crews were out in force spreading salt and sand on the accumulating ice.
Ice had built up as much as an inch thick around Mountain Home, Ark., and the utility Entergy Arkansas said about 5,800 customers were blacked out as the weight of ice brought down power lines. Missouri's AmerenUE reported about 6,000 customers without service.
'It sounded like gunfire'
Thousands more had no electricity in Kentucky as ice up to 1.5 inches thick snapped tree limbs and power lines, and caused short circuits that made transformers blow out.
"You hear the popping it sounded like gunfire and it's limbs from trees breaking," said Hopkins County, Ky., Judge-Executive Donald Carroll, who was among those with now power. He said crews in his western Kentucky county were busy trying to clear broken branches from roads.
The National Weather Service posted ice storm and winter storm warnings Tuesday along a broad swath from Texas and Oklahoma through the Mississippi and Ohio valleys to New Jersey, Maryland and Virginia. Public schools, colleges and universities called off classes Tuesday in parts of Arkansas, Oklahoma, Ohio, Indiana, Kentucky, Illinois and Maryland. In West Virginia, all 55 counties reported school closings.
Oklahoma Gov. Brad Henry declared a state of emergency Monday for all 77 counties and authorities urged residents to stay home. Dozens of flights were canceled at the Oklahoma City and Tulsa airports Monday. More...
©MSNBC | Gewijzigd: 13 februari 2017, 09:59 uur, door Joyce.s
A FedEx cargo plane makes a crash landing a Texas airport. Both crew members were taken to the hospital. The injuries appeared to be minor, said James Loomis, director of Lubbock Preston Smith International Airport.There was a small fire on the plane, the Federal Aviation Administration and FedEx spokeswoman Sandra Munoz said. Munoz said she was not sure about the extent of the damage.
The plane is an ATR-42 twin-turboprop aircraft and landed short of the touchdown zone at 4:37 a.m. CT (5:47 ET), Loomis said. Munoz said the plane had been traveling from Fort Worth Alliance Airport and skidded off the runway amid light freezing rain. Neither official could immediately say what caused the accident, and Munoz didn't know why parts of the plane caught fire. The plane was operated by Empire Airways, which is under contract with FedEx Corp., based in Memphis, Tennessee.
©CNN
Tree limbs snapped with a sound like gunshots, blacking out thousands of homes and businesses, and schools and government offices were closed as a major storm spread a glaze of ice and snow from the southern U.S. Plains to the East Coast. At least 19 deaths had been blamed on the weather.
Highway crews fought to keep up with slippery roads and in some places were blocked by fallen tree limbs and power lines. Ice had built up 3 inches thick in sections of Arkansas and Oklahoma. The National Weather Service posted ice storm and winter storm warnings Tuesday along a broad swath from Texas and Oklahoma through the Mississippi and Ohio valleys all the way into northern New England. Radar showed smears of snow and freezing rain stretching from Texas to Pennsylvania during the evening.
Broken tree limbs weighted down by ice crashed onto power lines, cutting service to at least 165,000 homes and businesses in hard-hit Arkansas, utilities said. Arkansas utilities warned customers that their power could be out for at least three days.
"Trees are falling everywhere you look. It's amazing. I saw power lines broken in half," said Nancy Stears, 37, of Midway, Arkansas, in a Taco Bell restaurant that had briefly managed to stay open despite the ice. Kentucky state officials reported more than 80,000 customers with no electricity as ice up to 1.5 inches thick broke tree limbs.More...
©Foxnews
Utility companies and road crews prepared for the worst Wednesday as a winter storm barreled into the Northeast, while officials in areas already hit hard by the blast warned it may be days before some shivering communities have electricity again. The storm has been blamed for at least 19 deaths, shuttered government offices and kept kids home from dozens of schools from the Southern plains to the East Coast. With more than a foot of snow forecast for New Hampshire, the Legislature canceled Wednesday's sessions. In Louisville, Ky., the mayor delayed opening government offices until 10 a.m. and urged businesses to follow suit.
Tree limbs encased in ice tumbled onto roads and crashed onto power lines in hard-hit Arkansas, Kentucky and Oklahoma, keeping thousands without power. In Arkansas - where ice in some places was 3 inches thick - people huddled next to portable heaters and wood-burning fires as utilities warned electricity may be out for days.
Power companies said some Arkansas counties were almost completely in the dark as repair crews were forced to stop working overnight because it was too dangerous to work in the dark, reports CBS' The Early Show weather anchor Dave Price.
"You can walk outside and hear the trees popping," Mel Coleman, CEO of the North Arkansas Electric Cooperative, told CBS Radio News. "You can hear transformers that are still up exploding. It's just a terrible mess."
Coleman said he expects the outage to be one of the largest the area's ever experienced and power officials were hoping it's days and not weeks. Ice storms overnight in West Virginia knocked out power to thousands more. American Electric Power reported more than 40,000 outages early Wednesday. Many other utilities struggled to keep up as ice accumulated on power lines and tree branches.
"Lines are still breaking," said John Campbell, the operations chief for Missouri's State Emergency Management Agency. "All the reports we are getting is they are losing the battle right now just because precipitation is still falling." In Kentucky, transportation cabinet workers struggled throughout the night to clear debris from impassable roads as rain and freezing rain continued to fall across the state. Widespread outages continued into the morning.More...
Bron:CBS | Gewijzigd: 13 februari 2017, 10:00 uur, door Joyce.s
In de Verenigde Staten zijn als gevolg van ijzel en sneeuwval al meer dan twintig mensen omgekomen. In het noordoosten van het land worden nog steeds waarschuwingen afgegeven voor het gevaarlijke weer. De meeste doden vielen in het verkeer. In het hele land was sprake van verkeerschaos. Dat hebben de media vandaag bericht.
Honderdduizenden huishoudens kwamen zonder stroom te zitten, omdat elektriciteitsmasten en kabels met een dikke laag ijs waren bedekt. Alleen al in de staat Arkansas zaten 150.000 mensen dinsdag in het donker wegens stroomuitval. Bevroren regen op een centimeters hoog pak sneeuw maakte talloze wegen onbegaanbaar. Ook het trein- en vliegverkeer ondervond veel hinder.
Bron: ANP
Sneeuw en hagel hebben de afgelopen dagen van het zuiden tot het noordoosten van de Verenigde Staten gezorgd voor grote verkeerschaos en problemen met elektriciteit. Alleen al in het zuiden kwamen door het winterweer 20 mensen om het leven, meestal bij verkeersongevallen.
Deze straatverkoper in Washington DC heeft de grootste moeite om zich te beschermen tegen de koude.
Het slechte weer verschoof gisteren van Oklahoma, Arkansas en Kentucky in de richting van de Atlantische Oceaan. In grote delen van die regio's zijn de elektriciteitskabels en -masten bedekt met een dikke laag ijs. Vele straten zijn onberijdbaar. Ook in de hoofdstad Washington DC zijn er problemen. Veel scholen en andere overheidsgebouwen bleven dicht.
Donker
In Arkansas brachten 150.000 mensen de nacht van dinsdag op woensdag door in het donker nadat de stroomleidingen waren geknapt onder het gewicht van het ijs.
Ook het luchtverkeer ondervond hinder van het slechte weer: veel vluchten werden afgelast of uitgesteld. In Dallas-Fort Worth, een van de grote knooppunten voor het luchtverkeer, steeg vandaag geen enkel vliegtuig meer op, zo meldt CNN.
bron: hln | Gewijzigd: 13 februari 2017, 10:00 uur, door Joyce.s
Snow and ice storms across the U.S. Midwest knocked out power to more than 870,000 homes and businesses from Oklahoma to West Virginia on Wednesday, local utilities reported. The band of storms, which started on Tuesday, were blamed for nearly two dozen deaths, many of them traffic-related as ice-covered roads were too dangerous to navigate.
Schools were closed in several states while airport traffic was delayed across the eastern third of the nation. While utility crews went to work to restore power on Wednesday, some customers could be in the dark until the middle of next week, utilities said. On Wednesday, Kentucky was the hardest hit state, with nearly 300,000 customers in the Bluegrass State without power.
Officials at E.ON U.S., which owns Louisville Gas and Electric Co and Kentucky Utilities Co, said it was still assessing the damage as the number of customer outages continued to grow Wednesday. E.ON U.S., a subsidiary or German energy company E.ON AG, did not say when it expected to restore service. Other area utilities estimated restoration would take several days.
The storm system moved into the Northeast, dropping snow from Ohio to Maine and ice in Kentucky, West Virginia, Pennsylvania and Maryland. Snow is less likely to disrupt power service while ice accumulates on trees and branches, snapping them onto power lines.
"Ice can be a utility's worst enemy," said Jim Stanley, president of Duke Energy's Indiana utility which had restored power to 17,000 customers by mid-day Wednesday. About 80,000 remained without service.More...
©Reuters | Gewijzigd: 13 februari 2017, 10:00 uur, door Joyce.s
http://www.liveleak.com/view?i=b62_1233259389
This was recorded January 27,2009 in northwest Arkansas. The nation is gripped by a massive ice storm stetching southwest to the northeast causing millions to be without power. USA Today; Cold, dark nights ahead in wake of deadly ice storm. More than a million people remained without power Thursday in the wake of the winter storm and could face a lengthy wait for electricity even as federal he More..lp was promised to the two states hit hardest, Kentucky and Arkansas.
POWER FAILURES CAUSED BY THE ICE STORM
The latest figures from utility companies on the number of homes and businesses without power in the nine states hit hardest by an ice storm that stretched from the Southern Plains to Appalachia:
Arkansas: 352,000
Illinois: 6,500
Indiana: 89,000
Kentucky: 542,000
Missouri: 120,000
Ohio: 128,000
Oklahoma: 20,000
Tennessee: 10,000
West Virginia: 31,000
TOTAL: 1.30 million
From staff and wire reports
More than a million households remain without power after snow and ice slammed the country from Texas to Maine, disrupting hundreds of flights and forcing Kentucky state troopers to use four-wheelers to find stranded residents.
Warmer weather Thursday was proving to be both a blessing and a curse, as sections of eastern Oklahoma and northern Arkansas began the grueling process of recovering from the latest ice storm.
Sid Sperry, a spokesman for the Oklahoma Association of Electric Cooperatives, said warmer conditions will help crews accelerate the restoration process but the warmth could also lead to more outages.
"It's a double-edged sword," he said. "Anytime the weather warms up above freezing and the ice melts off power lines, it causes them to bounce, so you may have a few more outages.
"Another downside is that as the roads begin to thaw, rural roads are not paved, so they become difficult to drive through. Warmer temperatures have a negative and positive effect."
There were about 20,000 households without power in Oklahoma as of Thursday morning. The numbers soared into the hundreds of thousands from northern Arkansas through Kentucky, where as much as 1 to 2 inches of ice burdened trees and power lines.
In Arkansas ' northwest, Bentonville, Fayetteville, Rogers and Springdale got more than an inch of ice. At Wal-Mart Stores headquarters, work continued, but a lot of employees had to take Wednesday off. The Arkansas Highway and Transportation Department said most north Arkansas highways still had ice and travel was slow in many places. All major routes were open by Thursday morning.
Kyle Brashears and his family fled their home in Mountain Home at 3 p.m. Tuesday because he was afraid of sagging branches from the oak trees that surround his house. Brashears, 33, returned that night to find his fears confirmed. The trunk of a thick oak split down the middle, sending half of the ice-heavy timber crashing onto his roof.
"It caved the roof in and ripped the gutter off, although it didn't penetrate inside," he said. "I was walking around outside until about 1 a.m., and it was just a non-stop medley of tree limbs cracking off."
Brashears and the family headed to his father-in-law's house where there is a gas fireplace to keep them warm. They used butane burners to cook their food and bundled up to stay warm in the house.
In Kentucky, the snapping of utility lines cut off phone service and even e-mail, said Kentucky State Police Sgt. David Jude, commander of media relations. Even cellphone service was being disrupted, Jude said.
More than a half-million customers in Kentucky remained in the dark. Many of the people had no heat and no working phone service to call for help.
"We have places across the state where even state police can't get their cruisers working and they're out in their own four-wheel-drive vehicles," Jude said.
It could take a week or more for utility operators in Kentucky and Arkansas to restore power to everyone.
Late Wednesday, President Obama signed requests from Kentucky Gov. Steve Beshear and Arkansas Gov. Mike Beebe for federal emergency declarations. Crews, even the National Guard in Kentucky, worked around the clock to resurrect power lines downed by thick ice in both states. Officials in states from Oklahoma to West Virginia fought to do the same.
Kentucky added two to the weather-related death toll, bringing the total to 23. A woman died while an ambulance on the way to her was blocked by impassable roads, and a woman fell on her basement stairs while she was retrieving a kerosene heater.
bron: LiveLeak
ps: voor een 'dikke' transformer fire video check deze: http://www.liveleak.com/view?i=220_1173870248 | Gewijzigd: 30 januari 2009, 15:19 uur, door Bronk
In de Amerikaanse staat Kentucky is het leger ingezet om te helpen bij het opruimen van de schade na langdurige ijsregen. Duizenden militairen moeten onder meer voedsel, water en dekens rondbrengen en wegen sneeuwvrij maken.
De laatste dagen trok de ijsregen over het zuiden en midden-westen. Zeker 42 mensen kwamen om het leven. Alleen al in Kentucky vielen elf doden. In de staat hebben honderdduizenden geen stroom. Elektriciteitsbedrijven proberen de energievoorziening weer op gang te brengen. Maar volgens de autoriteiten kan het nog wel dagen duren voordat iedereen weer is aangesloten.
©NOS
Eind vorige week teisterde een ijsstorm de Amerikaanse staat Kentucky. Inmiddels, een halve week later, zitten nog altijd een kwart miljoen mensen zonder stroom. De gouverneur van de staat noemt de situatie 'de grootste natuurramp waar Kentucky in de moderne tijd mee te maken heeft gehad'.
Volgens hulpverleners hebben 6500 mensen hun huizen moeten verlaten en zijn ondergebracht bij familie of in hotels. Verwarmingen waren uitgevallen, terwijl het weer bleef verslechteren. Tot nu toe zijn 16 mensen overleden door het noodweer.
De ijsstorm heeft op elektriciteitskabels, takken en daken een dikke laag ijs achter gelaten. Kabels en takken breken hierdoor als luciferhoutjes af en veroorzaken veel schade. Het kan nog ruim een week duren voor de meeste mensen weer elektriciteit hebben. Voor iedereen weer stroom heeft, kan het nog 2 maanden duren.
Ook wegen zijn onbegaanbaar door een dikke laag sneeuw en ijs. Ook de komende dagen blijft het nog sneeuwen in de staat, bij maximumtemperaturen onder het vriespunt.
©Weeronline
Na de desastreuze ijsstorm van vorige week in de staat Kentucy, teistert een nieuwe sneeuwstorm opnieuw het noordoosten van de Verenigde Staten.
Gisteren werd door de autoriteiten gemeld dat er door de storm van vorige week minstens 55 mensen zijn omgekomen. Sinds dinsdag laait een nieuwe storm door het noordoosten van de Verenigde Staten. Deze zorgt voor veel sneeuw in New England, West Virginia en andere staten aan de kust.
Op maandag bracht deze storm North Carolina al hevige regen. Vandaag wordt er zo'n 15 cm sneeuw verwacht in de noordoostelijke staten.
©Weeronline