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Posts Tagged ‘AO’

Another Nor’easter Dumps a Foot of Snow on the East Coast

Posted by feww on January 27, 2011

Nor’easters Blamed on Arctic Oscillation

AO Carves an Icy Path from Western Canada to Eastern United States

The 8th snowfall in New York since December 14 (6th this year) dumps another 19 inches of high compact snow on the city.

A bus stop in Queens, NY. An optimistic man waits for a bus as a fast moving winter storm causes a whiteout all the  way up the northeastern coast of the U-S. Photo credit: Mike Segar/Reuters. Image may be subject to copyright.

Once again a major snowstorm engulfed the Northeast United States, dumping as much as 10 inches of snow in some places.

“Classes were called off and commutes were snarled from Tennessee to New England as cars and buses slipped and slid on highways. The New York area’s airports, among the nation’s busiest, saw hundreds of delayed or canceled flights. Pedestrians struggled across icy patches that were on their way to becoming deep drifts.” AP reported.

New York region experience its eights snowfall since December 14, 2010,  including the “Bloomberg Blizzard” that dumped  20 inches on New York City after Christmas. When the snows arrived Wednesday, the city had already seen 36 inches of snow this season in comparison with the full-winter average of 21 inches.”

Snowfall Totals (so far this winter)

  • NYC: 60 inches (compared with the average of 21 inches for the entire winter season)*
  • Boston:  50.4 inches (about 270 percent increase over normal seasonal snowfalls for the same period)
  • Providence, RI: 31.7 inches (two-fold increase)
  • Connecticut (Bradley Int Airport):  59.1 inches ( more than double the normal)

Source: National Weather Service
* Not confirmed by NWS

Storm Highlights

  • More than 1,000 flights canceled in New York area’s three major airports
  • Thousands of airline passengers are stranded
  • At least 300,000 customers is Washington DC metro area are without power
  • Public schools remained closed for a second day Thursday

January 26, 2011

Area Covered By Snow: 45.5%
Area Covered Last Month: 52.9%
Snow Depth
Average: 16.5 cm
Minimum: 0.0 cm
Maximum: 2385.7 cm
Std. Dev.: 32.2 cm
Snow Water Equivalent
Average: 3.7 cm
Minimum: 0.0 cm
Maximum: 1138.5 cm
Std. Dev.: 8.9 cm


Arctic Oscillation Chills North America, Warms Arctic

“Technically, the Arctic Oscillation (AO) is a climate pattern caused by the ring of winds that blow around the North Pole from west to east. When they are strong, they trap the Arctic air mass north of 55°N. That’s north of Edinburgh, Moscow and Ketchikan, Alaska. When they are weak, however, the frozen polar air escapes south and can visit sunny California.” Source.

United States, Canada, eastern Siberia, and Greenland land surface temperature anomalies  for January 9 to 16, 2011, against 2003 to 2010 base averages, as observed by
MODIS on NASA’s Aqua satellite. Above-average temperatures are in red and orange, below-average temperatures in shades of blue. “Oceans, lakes, and areas with insufficient data (usually because of persistent clouds) appear in gray.” Source: NASA-EO. Click image to enlarge. Download larger image (3 MB, JPEG)

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Posted in and surface temperature anomalies 2011, Arctic Oscillation, Bloomberg Blizzard, climate pattern, northern hemisphere | Tagged: , , , , | Leave a Comment »

California: Powerful new storm sails ashore

Posted by feww on January 21, 2010

A powerful new storm sailed ashore causing more flooding and mudslides

  • Four major storms coming from the northern Pacific have struck California, with the 5th expected to hit the region on Thursday.
  • Up to a total of 50cm (20 inches) of rain in the worst affected areas
  • Snow
  • 6.5 m (20-foot) surf
  • 100 km/h (60 mph) winds in the coastal areas
  • Tornadoes

SECC Near Realtime Composite. Click Image to enlarge.
(24-Hr FE ED). Click HERE to Animate Image

The Wednesday storm was expected to dump up to 2 inches (5cm) of rain in the L.A. basin and valley areas and at least 4 inches in foothill and mountain areas, and causing yet more devastating land slides, the National Weather Service said.

Officials are particularly concerned about large areas of hillside in southern California consumed by wildfires in 2009, which could cause massive mudslides as there’s no longer any  foliage to prevent the earth from sliding downhill.

Meanwhile, a snow storm forced the California Highway Patrol to close Interstate 5 at the Grapevine, although the Cajon Pass remained open, a report said.

The Los Angeles Police Department has issued more evacuation orders in the northeastern San Fernando Valley, fearing more mudslides in the area.

US Weather Map – Click Image to Enlarge

Goes West AVNColor Enhancement Sat Image. Click image to enlarge.

Up to 1,000 homes in the Los Angeles area have already been evacuated in anticipation of mudslides.

“We’re about as ready for the rains that will be coming as we can be,” said LA Mayor Villaraigosa. “If you don’t have to be on the road, why don’t you stay home?”

“We’re asking you to please cooperate,” Mayor Villaraigosa added. “There’s too many people not heeding advice.”

In La Canada Flintridge, a northern suburb of Los Angeles near the base of the San Gabriel Mountains, the residents were told to do exactly the opposite. Residents  along canyon roads were ordered to evacuate, and stay away for  four days.

“I cannot stress enough that this is not the time to stay,” said Mayor Laura Olhasso. “So if you’ve been asked to leave and you have left, please don’t be fatigued. Please leave again.”

“South of Los Angeles, near Long Beach and Huntington Beach, at least four funnel clouds were reported Tuesday — rare in California, and especially so in winter. Gary Sewall was in Huntington Harbour when he said he saw a catamaran lifted 50 feet in the air. ” ABC News said.

“I saw what looked like a water spout that was circling around,” he said, “and then we saw the boat out across the channel go up in the air and come crashing down.”

Heavy rain, flooding and mudslides have closed roads, inundated homes and cars causing damage. Powerful winds with gusts 130 km/h  gusts have damaged power lines leaving  more than 750,000 customers without power at times.  Up to four tornadoes have touched down in Southern California, this week!

Doppler Radar National Mosaic
NWS Radar Mosaic. Click Image to enlarge and update. (24-Hr FE ED).

Hazards. Click Image to enlarge and update. (24-Hr FE ED).

Snow Accumulation. Click Image to enlarge and update. (24-Hr FE ED).

Weather Forecast. Click Image to enlarge and update.
(24-Hr FE ED).

Predominant Weather. Click Image to enlarge and update. (24-Hr FE ED).

IR Satellite Image. Click Image to enlarge and update. (24-Hr FE ED).

Water Vapor Satellite Image. Click Image to enlarge and update.
(24-Hr FE ED).

Max Temps. Click Image to enlarge and update. (24-Hr FE ED).

Min Temps.
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Temp – Real Time Mesoscale Analysis.
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6-Hr Precipitation amount. Click Image to enlarge and update. (24-Hr FE ED)

12-Hr Probability Precipitation (%).   Click Image to enlarge and update. (24-Hr FE ED).

Wind Speed.  Click Image to enlarge and update. (24hr- FE EDT).

Wind Gusts.  Click Image to enlarge and update. (24hr- FE ED)

Sky Cover.
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River and Lake Levels. Click Image to Enter Portal.

US Seasonal Drought Outlook.
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Surface Weather Charts.
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For hazard warning codes see:
NOAA/NWS  US Weather Hazard Map

NOAA GOES 11 – Near Real Time Full Disk. Click image to enlarge.

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Posted in El Niño, Pacific storm, Radar Mosaic, US Hazards Map, US Weather Map | Tagged: , , , , , , , , , , | 7 Comments »