All of Iowa, Forecast

Iowa Weather Report July 27th 2015: Steamy Sauna

STEAMY AND STORMY: It will be another steamy day across the state with highs well into the 80s and lower 90s with heat indices near or over 100 in some areas. It will be partly to mostly sunny as well across the state but it should be mainly dry. However we can’t rule out a rogue storm moving through the area at any time during the daylight hours. The chances of that are 20% or less at this time. Better chances of showers and storms will come in late tonight into the western counties of the state and through the day on Tuesday for the rest of the state There will be at least two rounds of storms by the look of things. One round Monday night into Tuesday morning followed by a break where we may get some sunshine around and another round late Tuesday afternoon through the overnight into the first half of Wednesday as the cold front moves to the east of the state. Rainfall amounts through Wednesday morning will range between a half and one inch with some isolated heavier totals in areas with repeated thunderstorm activity.

NORTHWESTERLY FLOW: With a ridge over the Desert Southwest and a trough over the Great Lakes and the northeast. We’ll be in the middle of the two with a northwesterly flow coming out of Canada. This will keep temperatures at or slightly below seasonal levels. It looks to stay dry Thursday and for most of Friday before another disturbance moves in for the upcoming weekend that could bring multiple rounds of showers and thunderstorms at that time. The timing of those storm chances are still up in the air but we should get a somewhat clearer picture in the coming days.

PUSHING FORWARD: Looking further into the month of August, the GFS shows a system moving through the state around the 5th with a chance of showers and thunderstorms at that time. More activity is shown toward the end of the period from the 8th through the 11th as well. It is something we’ll have to watch as we get closer. Temperatures during this period look to stay close to seasonal levels at this point, but that could change as well.

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