Tonight: Partly cloudy, warm and humid with a 20% chance of showers/storms. Low: 70-77. Wind: SE 5-10 mph.
Wednesday: Mostly sunny, very hot and humid with a 20% chance of showers/storms late afternoon or evening. High: 97 to 106. Heat Index: 100-110. Wind: SW 10-20 mph.
Wednesday Night: Partly cloudy with a 30% chance of showers/storms. Low: 69-73. Wind: NW 5-10 mph.
Thursday: Partly cloudy and cooler with a 20% chance of showers/storms. High: upper 80s.
Friday: Mostly sunny. High: low 80s.
Saturday: Mostly sunny. High: upper 80s.
Sunday: Partly cloudy with a 20% chance of showers/storms. High: upper 80s.
Monday: Partly cloudy, hot and humid, with a 20% chance of showers/storms. High: near 90.
Tuesday: Partly cloudy, hot and humid, with a 20% chance of showers/storms. High: low 90s.
It was a cooler day with temperatures at 3 pm ranging from 82-92 across eastern Iowa. We are north of a front that is forecast to turn to a warm front and push north across the area and bring very hot temperatures with it. Here is the position of the front early this afternoon.
There is a potential for storms to develop in a very unstable atmosphere across southwest Minnesota. If the storms develop later this evening they will track southeast along and just north of the front across Iowa. IF the storms develop a severe storm is possible with damaging wind and hail. Here is the severe weather outlook from SPC tonight.
The warm front will have push across most of eastern Iowa by morning. High temperatures Wednesday will be VERY HOT with many locations 100+. The heat index will be up around 110 during the afternoon. A HEAT ADVISORY is in effect through Wednesday for all of eastern Iowa. We will be flirting with record high temperatures for the day. Here is the forecast highs compared to the records for Wednesday.
We will have a mostly sunny sky most of the day until a cold front approaches from the west. Here is the forecast position of the front at 7 pm Wednesday.
The cold front is forecast to bring a chance of showers/storms to either late Wednesday afternoon or Wednesday evening. There is a slight risk of severe weather with any of the storms that develop. Large hail and high wind will be the primary threat. Here is the severe weather outlook for Wednesday.
Here is the rain forecast from Tuesday evening to Thursday evening.
Any rain that falls in the next 48 hour will not be enough to drop any of the current burn bans across the state (see map below).
Click here for details on the county burn bans.
This post was written by Schnack on July 24, 2012