Meteorological Winter Begins

The video explains the two definitions of winter: meteorological, which runs from December 1st to the end of February, and astronomical, based on equinoxes and solstices. It highlights the impact of La Nina on US weather, causing variations in precipitation and temperature across different regions. The northwest and Great Lakes are expected to be wetter, while the southeast and southwest will be drier and warmer, potentially worsening drought conditions in the western US.

What is the main difference between meteorological and astronomical winter?

• Meteorological winter is based on calendar months, while astronomical winter is based on the Earth's tilt.

• Meteorological winter is determined by the amount of snowfall.

• Meteorological winter is longer than astronomical winter.

• Astronomical winter occurs only in the northern hemisphere.

How does La Nina affect the jet stream?

• It causes the jet stream to remain stationary.

• It pushes the jet stream northward into Canada.

• It pushes the jet stream southward into Mexico.

• It has no effect on the jet stream.

Which regions are expected to be wetter due to La Nina?

• Southwest and Midwest

• Northwest and Great Lakes

• Southeast and Southwest

• Northeast and Midwest

What is a potential consequence of the weather patterns discussed in the video?

• Increased snowfall in the southeast

• Prolonged drought in the western United States

• Flooding in the southwest

• Milder temperatures in the northeast

Why is the winter weather important for the western United States?

• It determines the length of the summer season.

• It affects the amount of snowpack and rain, which can impact drought conditions.

• It has no significant impact on the region.

• It influences the migration patterns of birds.