This satellite image provided by NOAA and taken Tuesday Jan. 25, 2011 at 10:45 EST shows a huge swath of the United States affected by a winter storm that has already brought layers of dangerous ice and blowing snow, closing roads and airports from Texas to Rhode Island. The storm’s more than 2,000-mile reach threatened to leave about a third of the nation covered in a hodge-podge of harsh weather. Ice fell first and was expected to be followed by up to two feet of snow in some places. (AP Photo/NOAA)

This satellite image provided by NOAA and taken Tuesday Jan. 25, 2011 at 10:45 EST shows a huge swath of the United States affected by a winter storm that has already brought layers of dangerous ice and blowing snow, closing roads and airports from Texas to Rhode Island. The storm’s more than 2,000-mile reach threatened to leave about a third of the nation covered in a hodge-podge of harsh weather. Ice fell first and was expected to be followed by up to two feet of snow in some places. (AP Photo/NOAA)

Rebecca Valk walks to her office in Poughkeepsie, N.Y., in near whiteout conditions Tuesday, Feb. 1, 2011. A monster storm began to bear down on the middle of the nation Tuesday, threatening to leave up to a third of the nation covered in brutal winter weather. (AP Photo/Poughkeepsie Journal, Spencer Ainsley)

Rebecca Valk walks to her office in Poughkeepsie, N.Y., in near whiteout conditions Tuesday, Feb. 1, 2011. A monster storm began to bear down on the middle of the nation Tuesday, threatening to leave up to a third of the nation covered in brutal winter weather. (AP Photo/Poughkeepsie Journal, Spencer Ainsley)

Tim Houchin walks in the snow to work downtown, Tuesday, Feb. 1, 2011 in Tulsa, Oklahoma. Blizzard conditions struck the Tulsa area stranding motorists and shutting down much of the city. (AP Photo/Tulsa World, Christopher Smith)

Tim Houchin walks in the snow to work downtown, Tuesday, Feb. 1, 2011 in Tulsa, Oklahoma. Blizzard conditions struck the Tulsa area stranding motorists and shutting down much of the city. (AP Photo/Tulsa World, Christopher Smith)

A pedestrian walks through the intersection of Tenth and Cherry streets in downtown Columbia, Missouri, Tuesday, Feb. 1, 2011. Layers of dangerous ice and blowing snow closed roads and airports from Texas to Rhode Island on Tuesday as a monster storm began bearing down on the nation. (AP Photo/The Columbia Daily Tribune, Joshua A. Bickel)

A pedestrian walks through the intersection of Tenth and Cherry streets in downtown Columbia, Missouri, Tuesday, Feb. 1, 2011. Layers of dangerous ice and blowing snow closed roads and airports from Texas to Rhode Island on Tuesday as a monster storm began bearing down on the nation. (AP Photo/The Columbia Daily Tribune, Joshua A. Bickel)

Brian Boldt operates a large snowblower clearing the snow during a winter storm at Buffalo Niagara International Airport in Cheektowaga, N.Y., Tuesday, Feb. 1, 2011. (AP Photo/David Duprey)

Brian Boldt operates a large snowblower clearing the snow during a winter storm at Buffalo Niagara International Airport in Cheektowaga, N.Y., Tuesday, Feb. 1, 2011. (AP Photo/David Duprey)

A Pakistani boy plays with a tire next to a slum during sunset on the outskirts of Islamabad, Pakistan, Monday, Jan. 31, 2011. (AP Photo/Muhammed Muheisen)

A Pakistani boy plays with a tire next to a slum during sunset on the outskirts of Islamabad, Pakistan, Monday, Jan. 31, 2011. (AP Photo/Muhammed Muheisen)

In this photo provided by the San Diego Zoo shows giant panda Yun Zi Monday, Jan. 31, 2011, atop a tree while his mother, Bai Yun, ate her bamboo in an adjacent exhibit at the San Diego Zoo in San Diego. The 79-pound panda Yun Zi is on the way to independence as he reaches a new milestone — 18 months old. The two are spending their mornings alone and, for the moment, still come together in the afternoons. Their behavior will dictate when the gate is shut between them for the last time. (AP Photo/San Diego Zoo, Tammy Spratt)

In this photo provided by the San Diego Zoo shows giant panda Yun Zi Monday, Jan. 31, 2011, atop a tree while his mother, Bai Yun, ate her bamboo in an adjacent exhibit at the San Diego Zoo in San Diego. The 79-pound panda Yun Zi is on the way to independence as he reaches a new milestone — 18 months old. The two are spending their mornings alone and, for the moment, still come together in the afternoons. Their behavior will dictate when the gate is shut between them for the last time. (AP Photo/San Diego Zoo, Tammy Spratt)

Space Shuttle Discovery slowly makes its way to Launch Pad 39A at the Kennedy Space Center in Cape Canaveral, Florida, Monday, Jan. 31, 2011. The move takes approximately 7 hours. (AP Photo/John Raoux)

Space Shuttle Discovery slowly makes its way to Launch Pad 39A at the Kennedy Space Center in Cape Canaveral, Florida, Monday, Jan. 31, 2011. The move takes approximately 7 hours. (AP Photo/John Raoux)

The crowd gathers in Tahrir, or Liberation, Square in Cairo, Egypt, Tuesday, Feb. 1, 2011. Tens of thousands of people flooded into the heart of Cairo Tuesday, filling the city’s main square as a call for a million protesters was answered by the largest demonstration in a week of unceasing demands for President Hosni Mubarak to leave after nearly 30 years in power. (AP Photo/Khalil Hamra)

The crowd gathers in Tahrir, or Liberation, Square in Cairo, Egypt, Tuesday, Feb. 1, 2011. Tens of thousands of people flooded into the heart of Cairo Tuesday, filling the city’s main square as a call for a million protesters was answered by the largest demonstration in a week of unceasing demands for President Hosni Mubarak to leave after nearly 30 years in power. (AP Photo/Khalil Hamra)

People watch soldiers controlling access near Tahrir, or Liberation, Square in Cairo, Egypt, Tuesday, Feb. 1, 2011. Security officials say authorities have shut down all roads and public transportation to Cairo, where tens of thousands of people are converging to demand the ouster of Egyptian President Hosni Mubarak after nearly 30 years in power. (AP Photo/Lefteris Pitarakis)

People watch soldiers controlling access near Tahrir, or Liberation, Square in Cairo, Egypt, Tuesday, Feb. 1, 2011. Security officials say authorities have shut down all roads and public transportation to Cairo, where tens of thousands of people are converging to demand the ouster of Egyptian President Hosni Mubarak after nearly 30 years in power. (AP Photo/Lefteris Pitarakis)

A stray dog sleeps next to sleeping homeless children in Katmandu, Nepal, Tuesday, Feb. 1, 2011. (AP Photo/Gemunu Amarasinghe)

A stray dog sleeps next to sleeping homeless children in Katmandu, Nepal, Tuesday, Feb. 1, 2011. (AP Photo/Gemunu Amarasinghe)

Egyptian protesters greet army soldiers atop vehicles in central Cairo, Egypt, Saturday, Jan. 29, 2011. Hundreds of anti-government protesters have returned to Cairo’s central Tahrir Square, chanting slogans against Hosni Mubarak just hours after the Egyptian president fired his Cabinet but refused to step down. (AP Photo/Ahmed Ali)

Egyptian protesters greet army soldiers atop vehicles in central Cairo, Egypt, Saturday, Jan. 29, 2011. Hundreds of anti-government protesters have returned to Cairo’s central Tahrir Square, chanting slogans against Hosni Mubarak just hours after the Egyptian president fired his Cabinet but refused to step down. (AP Photo/Ahmed Ali)

In this photo taken Friday, Jan. 28, 2011, and made available Saturday, anti-goverment protesters run from a burning police vehicle in Suez, Egypt, Saturday, Jan. 29, 2011. (AP Photo/Amru Salahuddien)

In this photo taken Friday, Jan. 28, 2011, and made available Saturday, anti-goverment protesters run from a burning police vehicle in Suez, Egypt, Saturday, Jan. 29, 2011. (AP Photo/Amru Salahuddien)

Egyptians gesture as they stand atop an Egyptian army armored vehicle as they celebrate in downtown Cairo, Egypt, Saturday, Jan. 29, 2011. Hundreds of anti-government protesters returned Saturday to the streets of central Cairo, chanting slogans against Hosni Mubarak and attacking police just hours after the Egyptian president fired his Cabinet and promised reforms but refused to step down. (AP Photo/Amr Nabil)

Egyptians gesture as they stand atop an Egyptian army armored vehicle as they celebrate in downtown Cairo, Egypt, Saturday, Jan. 29, 2011. Hundreds of anti-government protesters returned Saturday to the streets of central Cairo, chanting slogans against Hosni Mubarak and attacking police just hours after the Egyptian president fired his Cabinet and promised reforms but refused to step down. (AP Photo/Amr Nabil)

Egyptian anti-government protesters climb atop an Egyptian army armored personnel carrier, next to a signpost bearing the words “Down Mubarak”, in Cairo, Egypt, Saturday, Jan. 29, 2011. (AP Photo/Ben Curtis)

Egyptian anti-government protesters climb atop an Egyptian army armored personnel carrier, next to a signpost bearing the words “Down Mubarak”, in Cairo, Egypt, Saturday, Jan. 29, 2011. (AP Photo/Ben Curtis)