The supercell storm usually forms in areas with moderate to strong upper-level winds
, and strong instability.
ET (11:25 UTC) Wednesday citing unfavorable upper-level winds
. Strong winds also forced the cancellation of the second launch attempt scheduled for 8:32pm ET (00:32 UTC).
SpaceX's 4th attempt to launch a US military satellite has been postponed due to strong upper-level winds
. The next launch attempt is to take place on December 23, according to Space X officials, Trend reported citing Sputnik.
These ridges cause upper-level winds
to weaken and induce less vertical wind shear in the lower atmosphere, which leads to fewer days with tornado activity in those regions.
But upper-level winds
known as shear swiftly tore the storm apart.
When the frontal boundary was eventually pushed eastward by a small upper-level disturbance, convergence ahead of the front and the higher upper-level winds
created conditions for supercell storms over the Northeast U.S.
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.
 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.