Since the upper-level winds
are a reflection of low-level temperature gradients, this means that wintertime brings a strengthening of the jet stream, and a shift southward from Canada into the United States.
The Walker Circulation (tropical near-surface winds blowing from east to west, and upper-level winds
blowing from west to east) is substantially weakened, as we expect during a strong El Nino.
In response to increasing upper-level winds
, a surface low-pressure system was taking shape over the Midwest, moving east/northeast into Iowa by the morning hours of Palm Sunday.
El Nino is a warming of the water in the Pacific Ocean that causes strong westerly upper-level winds
in the tropical Atlantic.
that have been sending smoke to the south were forecast to switch overnight and bring the haze north over Lane County and beyond today through the end of the week.
Until a few days ago, we've been in a pattern unfavorable for tornadoes, in general because the upper-level winds
over the central part of the U.
3] ANVIL: Upper-level winds
blow the top of the cloud away from the thunderstorm.
The upper-level winds
caused the storm system to rotate, meteorologist Jeff Masters, director of the website Weather Underground, told National Geographic's website.
Coastal Carolina researchers, working closely with counterparts at North Carolina State University, will evaluate the buoy data to help pinpoint the best location for the platform, which will measure upper-level winds
more similar to those a wind turbine would encounter.
The Flex Tracks programme is particularly significant for ultra long-haul flights where weather reports of upper-level winds
are regularly updated in-flight, allowing significant fuel burn and time savings to take place.
Volcanic eruptions and forest fires generate ash and smoke aerosols that can be carried for thousands of miles by upper-level winds
On top of that, we blew off (no pun intended) upper-level winds
, a 200-pound-fuel miscalculation.