Friday, December 12, 2014

Powerful wind

(MORE: Live Updates)
The National Weather Service in Monterey, California, said Monday that this storm is "expected to be one of the strongest storms in terms of wind and rain intensity" since storms in October 2009 and January 2008.
On Thursday afternoon in Oregon, the Portland International Airport recorded a 67-mph wind gust, its highest wind gust in 33 years.
Powerful wind gusts hit the San Francisco Bay Area Thursday morning, knocking out power to some 150,000 customers. Winds in the Sierra Nevada topped out at 147 mph on the summit of Mount Lincoln, near Truckee.
The storm is also slamming the Pacific Northwest, where hurricane force wind warnings have been posted for the waters along the coast of northwest Oregon and southwest Washington. Over 100,000 customers had lost power in the Northwest by Thursday evening as wind gusts as high as 95 mph ripped northward through Oregon and into Washington.
Numerous flash flood warnings have been issued Thursday, including virtually every county in the San Francisco Bay Area. Multiple freeways have been closed due to flooding, and parts of Sonoma County have seen over 9 inches of rain.

Cause of tornado

Many people always ask us what causes tornadoes? And while there are many different theories on tornadogenesis, the basic accepted idea is  that thunderstorms develop in warm, moist air in advance of eastward-moving cold fronts. These thunderstorms often produce large hail, strong winds, and tornadoes. Tornadoes in the winter and early spring are often associated with strong, frontal systems that form in the Central States and move east. Occasionally, large outbreaks of tornadoes occur with this type of weather pattern. Several states may be affected by numerous severe thunderstorms and tornadoes.
During the spring in the Central Plains, thunderstorms frequently develop along a "dryline," which separates very warm, moist air to the east from hot, dry air to the west. Tornado-producing thunderstorms may form as the dryline moves east during the afternoon hours.
Along the front range of the Rocky Mountains, in the Texas panhandle, and in the southern High Plains, thunderstorms frequently form as air near the ground flows "upslope" toward higher terrain. If other favorable conditions exist, these thunderstorms can produce tornadoes as well.

Storm Chaser

As you can see from the graphic above,"Chase Alley" and "Tornado Alley" certainly overlap. We usually start our early tours chasing from Texas to Oklahoma but as the season really kicks off we could be anywhere from Texas to Nebraska. As the season progresses, storm systems tend to remain to the Northern Plains, this usually happens from mid June to the latter part of July into August and is the reason why we have our Northern Plains tours. These tours are ideal if you are a photographer or interested in photography, as we encounter not only majestic landscapes but also severe weather stormscapes including massive supercell structures!

power outing

A tornado watch is in effect until 2 p.m. today for West Mississippi, Northeast Louisiana and Southeast Arkansas.
"Everyone needs to be on guard tomorrow," said Mississippi Emergency Management Agency Executive Director Robert Latham on Sunday evening. "The key is to have a plan and not panic."
National Weather Service forecasters updated MEMA Sunday about a strong cold front will begin moving into north and west Mississippi Monday afternoon and continue south and east through the night.
All kinds of severe weather are possible with this system, including damaging winds, heavy rains, hail and even tornadoes, a release from MEMA said.
A large portion of the middle part of the state will have an elevated risk for damaging winds, possibly upwards of 60 miles per hour, as well as possible tornadoes and small hail through Monday afternoon and into Monday night, according to the NWS.
"We are entering our fall severe weather period as big temperature swings occur with these systems" said Latham. "Please don't rely on any one way of getting weather alerts, make sure you have several."
The Mississippi Red Cross is on alert and has volunteers ready to respond, said regional disaster officer Bob Devaney.
"Our emergency response vehicles are ready to roll," Devaney said. "We urge everyone to take a few simple steps that can help save lives during severe weather. Be on your guard and have a plan."

California Storm

A monster storm is battering California, Oregon and Washington with extremely high winds and flooding rainfall, and it will eventually bring blizzard conditions to the Sierra Nevada. The National Weather Service in Monterey, California, said earlier this week it’s "expected to be one of the strongest storms in terms of wind and rain intensity" since storms in October 2009 and January 2008. Below are the latest updates on the storm from The Weather Channel, National Weather Service forecast offices and news sources from around the region.
A big storm will bring heavy snow, heavy rain, high winds and thunderstorms.
The development of an intense storm along the coast means heavy rains and gales along the coast and heavy wet snow interior locations. I think the higher elevations of the Northeast from northeastern Pennsylvania on north will see over a foot of snow. Snow mixed with rain at times for valley areas will keep amounts down. Flooding may occur along the coast and parts of southeastern New England may even have some heavy thunderstorms with strong winds.

Wettest Strom

The wettest storm to affect the U.S. West Coast since 2009 is gathering strength over the Pacific Ocean, and promises to bring much-needed drought relief to thirsty California Wednesday through Friday. Rainfall amounts of 3 - 8 inches are expected over most of Northern California, with snowfall amounts of 1 - 3 feet predicted in the Sierra Mountains. As noted by Wunderground weather historian Christopher C. Burt in his Monday post, California Drought Situation Improves, this week’s storm may be the strongest and wettest storm to hit the region since October 2009, when the last major ‘pineapple express’ soaked the state. California is already benefiting from widespread heavy rains that fell November 29th through December 6th, and most of California is now running a seasonal precipitation surplus—the first time they’ve seen such since December 2012.