Stormy Start – Iowa Weather Network Archives

WORKING TOWARD THE WEEKEND: It looks to be a stormy day across the state, however it won’t be a wash out as there will be some dry periods with some possible sunshine around. Another day of heat and humidity will be in store as well with readings in the 80s and lower 90s. Heat indices will be in the 90s and lower 100s by the afternoon. Showers and thunderstorms are expected to develop during the afternoon hours and through the area during the evening and overnight. Another chance is possible on Friday as well with cooler readings. Some of the storms could become strong, but widespread severe weather looks unlikely at this time. Heavy rainfall is a possibility with rainfall amounts exceeding an inch in many areas. Looking at the weekend, drier and cooler air will filter in and it will be fell much better at the fairgrounds. Highs in the lower 80s in Des Moines both days with the rest of the state seeing upper 70s to middle 80s.

SOME FLUIDITY: As we look at next week, the GFS is showing some precipitation chances creeping in late Monday into Tuesday across the southeastern counties of the state. This looks to be with an ongoing tropical cut-off low over the Gulf Coast currently being shunted to the northeast early next week. There is a lot of uncertainty with regards to these type of systems as they can be highly unpredictable. Right now we’ll look at a partly to mostly sunny Monday through Wednesday with an outside chance of rain mainly in the southeast. Readings during this period look to be mainly in the 80s. More model data will be needed to pinpoint this time period better. Thereafter, a frontal system is shown sweeping into the state toward the end of the week when shower and thunderstorms chances look to increase once more. As mentioned earlier, this could change depending on what we may see with this other feature earlier in the week. A lot of unknowns at this time.

INTO THE ABYSS: Looking at the rest of the extended period, the front mentioned coming into the state next weekend is shown to stall over the area through the 24th with several possible rounds of showers and storms. It doesn’t look as though it will be a complete washout, but time will tell with coming model runs. After this system moves off the rest of the period is shown to be quieter and cooler as well, similar to what we saw on the GFS yesterday.