Lake Effect
On September 2, 2008, a narrow band of lake-effect rain showers set up
and gave some precipitation to western portions of Winnipeg. The
synoptic setup was just right, with 850 mb temperatures of about 3°C
and lake temperatures around 18°C, exceeding the minimum threshold of a
temperature difference of 13°C typically regarded as the minimum
required to produce lake-effect precipitation.
Note how around 0000Z, the velocity animation shows lower speeds within the core of the heaviest rain--this is likely because of precipitation drag acting on the inner part of the precipitation band.
Note how around 0000Z, the velocity animation shows lower speeds within the core of the heaviest rain--this is likely because of precipitation drag acting on the inner part of the precipitation band.
Base Reflectivity
Radial Velocity