A system tracking through the Dakotas brought an area of showers and scattered thunderstorms over the Northern Plain States yesterday.. but once again, the bulk of the rainfall was confined south of the border, with precipitation once again bypassing Winnipeg and much of the northern RRV and southeast MB (there were some brief showers over parts of the city last night with 2 or 3 mm, but it appears to have missed the airport) Some areas of southwest MB did pick up some rainfall yesterday, with general amounts of 5-10 mm near the US border and southern RRV, with heavier amounts through the Swan River area into the northern interlake. However, most other areas of southern MB remained dry yesterday.. a growing concern for area farmers who are looking for some much needed rainfall. After a wet start to the growing season in the RRV, the taps starting shutting down in June.. with very little rainfall recorded in July, especially over Winnipeg and the northern RRV. (see above graph showing cumulative precipitation at Winnipeg airport over the past 90 days)
In Winnipeg, only 9.5 mm of rain has been recorded this month. If we get less than 1 mm of rain over the next 4 days, this will go down as Winnipeg's driest July since records began in 1872 (currently July 2006 at 10.5 mm) Will it happen? Things look dry through Friday, but there is chance of some scattered shower or thunderstorm activity Saturday as increasingly warm and more humid air moves into southern MB. At this time of year, it doesn't take much to get more than 1 mm of rain even with some passing showers, so it's not a given that we'll break the record. But given the track record of storms over the past few weeks, the potential is certainly there. Stay tuned..