UPDATED at 4:30 PM
Tonight: Cloudy with 100% chance of rain and storms. Heavy downpours are possible. Low: 36-42. Wind: NE 5-15 mph.
Thursday: Cloudy 80% chance of rain. High: 40-49. Wind: NW 10-15 mph.
Thursday Night: Cloudy with a 40% chance of light rain/snow showers. Low: 31-35. Wind: NW 10-20 mph.
Friday: Cloudy with a 30% chance of light rain/snow showers. High: near 40.
Saturday: Partly to mostly cloudy. High: near 50.
Sunday: Mostly cloudy with a 20% chance of showers. High: mid 50s.
Monday: Mostly cloudy with a 20% chance of showers. High: mid 50s.
Tuesday: Mostly cloudy with a 20% chance of showers. High: near 50.
Wednesday: Partly cloudy. High: near 50.
We knew this was coming. Knowing it was coming doesn’t make it any easier to deal with now that it is here. Rain amounts of 1-3” have fallen across eastern Iowa with the heavier amouts in southeast Iowa causing flooding in some locations. The radar at 4:00 pm shows widespread rain in Iowa and more to our southwest moving northeast.
There is a lot going on with this storm. There are tornado watches as far south as Texas and extending northeast to Indiana. All kinds of flooding headlines extend from Kansas northeast to Michigan. The colder side of the storm brings more snow from Colorado to Minnesota and Wisconsin.
A warm front is located east/west across Missouri. South of the front temperatures are in the 80s with dewpoints near 70. North of the front it is much colder with temperatures in the 30s and 40s. Here is the front this afternoon.
In addition to flooding concerns there is a slight risk of severe weather across southeast Iowa. It is there because the low is forecast to track northeast across southeast Iowa tonight. Near and east of the low and south of the warm front will be the chance of a few severe storms with the main threat being large hail. Here is the SPC outlook.
The map below shows a strong low level jet feeding moisture north into the storms from the Gulf of Mexico.
Repeating…more heavy rain is possible tonight. Areas southeast of a line from Dubuque to Cedar Rapids could see an additional 1-2”+ while areas northwest will receive 1” or less. Here is the rain forecast from Wednesday evening to Thursday evening.
The showers become scattered and light Thursday. Thursday night and Friday it gets cold enough for scattered light rain/snow showers. The wind increases from the northwest Friday.
High pressure will bring us a dry day Saturday. Unfortunately there is more rain in the forecast Sunday through Tuesday. The rain chances are low at this point and it doesn’t look like heavy rain is expected like this Wed/Thu is and will still bring us.
When it comes to the temperatures in the next seven days…highs will remain colder than 60 degrees.
Posted under Forecast Discussion
This post was written by Schnack on April 17, 2013