Monsoonal surge brings greatest chance of showers on Friday
Wednesday, July 9, 2014
Atmospheric moisture has substantially increased in the last 24 hours as the clockwise circulation around a ridge over the Rocky Mountains draws moist air northwards into our area. This increase in moisture combined with high afternoon temperatures will lead to an increasing chance of showers this afternoon and extending through the end of the workweek. Additionally, a wave moving along the Canadian border on Friday will increase the likelihood and strength of showers, making that day the wettest day of this forecast period with showers possibly developing as early as noon.
Though this monsoonal moisture is suppressed to our south with the passing of the Canadian wave for the weekend, there should be enough existing moisture for a small chance of slow-moving afternoon showers on Saturday with even less of a chance for Sunday.
Next Monday will be similar to the preceding Sunday before that Canadian wave intensifies and moves into the upper midwest early in the workweek. This will again increase the likelihood and strength of showers for Tuesday and Wednesday of next week. After that, models forecast westerly flow aloft which will cut off the monsoonal moisture plume and allow for drier conditions heading into the following weekend.
