MINNEAPOLIS (KMSP) - While the last few months haven’t been particularly active, the consistency of the moisture has been pretty impressive. MSP Airport has recorded 10 straight days without any measurable precipitation. This is the longest stretch of dry weather for the airport since March. While it’s common to get rain once or twice a week, rarely does it happen so regularly as the atmosphere will go through some tumultuous periods followed by some very quiet periods leading to the “average” of receiving precipitation a few times a month. So why so quiet all of a sudden??
Well, we have been blockaded. The combination of Hurricane Joaquin and a cutoff low that has resulted in a couple feet of rain in South Carolina has actually set up a barrier in the atmosphere. This forces everything upstream to either slow down and wait for it to clear, or just go around. This has resulted in a very quiet period for the state. You can see the two storms very easily in the water vapor imagery below with the giant curls in the atmosphere…
The amount of rain in South Carolina is staggering with over 4 trillion gallons of water falling in just 3 days… compare that to the last 7 days of rain for everyone else.
Now that both of the lows responsible are starting to move and a more progressive pattern is likely to set up, therefore, occasional moisture may actually make it back into the state. Nothing looks too terribly heavy, but some showers look like sometime on Wednesday.