More Heavy T-storms Capable of Flash Flooding Overnight
June 1, 2014 — 6:07pm
Sunday Night Soakers. NWS Doppler radar at 5:36 PM shows strong storms pushing into southwesternern Minnesota; the frontal boundary that pushed across the metro early this morning stalled over far southern Minnesota and northern Iowa, sparking 3-5" rains and a few confirmed tornadoes. Now it's doing a U-turn and heading north; T-storms possible in the metro afater 9 PM, with locally heavy rain overnight. Considering the ground is waterlogged, totally saturated from recent 3-6" rains (5-8" fell on western Stearns County) any additional rain will almost immediately run off into streets, streams and basements. If you live in a flood-prone area stay alert overnight.
Flash Flood Watch still in effect for most of Minnesota until Monday afternoon.
Here We Go Again. High-res visible satellite imagery from NOAA and WeatherTap shows a very sloppy frontal zone just to our south, strong T-storms flaring up along that boundary, pushing potentially heavy rain back into Minnesota. There's even a slight chance of an MCS (meso-convective system) forming overnight, capable of torrential rains and frequent lightning. The short-term flood risk is not over yet.
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We should be counting our blessings, atmospheric and otherwise. The same bloated heat-pump high pressure ridge responsible for drought, fire and hundreds of weather records out west is keeping our winds blowing from the west to northwest, a wind flow that makes it impossible for the hottest, steamiest air of summer to reach Minnesota anytime soon, at least looking out into the 3rd week of July. I'm starting to think we'll escape the worst of the heat this summer - that's the trend.
I don't miss the 90s and drippy 70-degree dew points, but once again the patterns are slowing down. A semi-permanent ridge of high pressure stapled over the west coast will treat much of the west and south to a heat wave, while burps of Canadian air sneak south of the border every few days, preventing temperatures here from building to uncomfortable levels. No complaints here.
With any luck we'll escape another day of hail and high water. Yesterday's troublesome storm in the upper atmosphere pinwheels away, a more stable sky overhead should mean sunshine, and no weather drama later today. Temperatures still trend cooler than average into next week. Real summer heat is on indefinite hold.