3:00 p.m. EDT Tuesday:
According to Bloomsberg, Isaac has now shut down 93 percent of oil output and 67 percent of natural gas output in the Gulf of Mexico.
As Isaac impacts the Gulf of Mexico, oil and gas companies have evacuated workers and shut down production.
Isaac's disruption of oil production makes oil and gas prices uncertain. One factor that could make the prices rise is the limited supply with Gulf oil production shutting down. The price of oil could drop, however, if the United States government releases oil from the Strategic Petroleum Reserve.
Based on Bureau of Safety and Environment Enforcement (BSEE) data from offshore operator reports submitted Sunday morning, one in 10 oils rigs and around one in 20 manned oil platforms evacuated workers.
Estimates from the BSEE Sunday had around a quarter of oil production closed in the Gulf of Mexico. Isaac halted less than 10 percent of natural gas production so far.
Map of oil rigs and platforms in the Gulf of Mexico in 2008 from GeoCommons.com. The map was produced and published by William Benjamin.
The coldest air of the winter will plunge southward across much of the eastern United States and will feature single-digit and sub-zero temperatures in the Northeast during the Valentine's Day weekend.
Untreated roadways and sidewalks could be slippery, causing some problems for the morning commute.
Conditions will be favorable for lake-effect snow through the end of the week, threatening low visibility and dangerous travel conditions.
Episodes of snow and slippery travel will affect the mid-Atlantic states and parts of New England through Thursday.
A new study has found that nearly a tenth of cereal crops have been wiped out due to droughts and heat waves between 1964 and 2007.
As winter weather approaches, concern for pet safety grows. Make sure you know these useful tips.
Reading, PA Baltimore City, MD Baltimore City, MD ()
-13 F; February minimum; 2nd lowest ever. 3 deg. F., all time record low maximum. -7 deg., tied all time record.
MIDWEST Milwaukee, WI Rockford, IL Albia, IA (1960)
Snowstorm and High Winds 16.7 in. of snow. Wind gusts to 61 mph. 11.6 in. of snow. Isolated 24 hours. 16 in. of snow.
Georgia & South Carolina (1973)
Worst snowstorm in the South in decades. As much as 15-21 inches in places.