Monday, June 14, 2010
Developing storm system threatens showers and thunderstorms Thursday into Friday..
A weak system over North Dakota will circulate cloud and a few showers over southeast MB tonight into Tuesday. Most of the shower activity should stay southeast of Winnipeg, although generally cloudy skies will prevail over the Red River valley. Of greater concern is the expected evolution of a stronger storm system over the western US that threatens to bring more widespread showers and thunderstorms to southern Manitoba by Thursday into Friday. This storm system is expected to move over western North Dakota on Wednesday pushing an increasingly warm and humid airmass over southern MB by Thursday. This will likely trigger scattered thunderstorm activity with locally heavy rain possible. Additional showers and thunderstorms are expected Thursday night into Friday over southern MB with areas of heavy rain likely, especially over western MB into the Interlake regions where local rainfall amounts of 40 to 70 mm are possible. This system will bear close watching as soils are saturated across many areas of southern MB and southern SK, and any additional heavy rain will result in more problems for agricultural and hydrological interests.
Posted by rob at 9:58 PM