UPDATED at 4:30 PM
Tonight: Mostly clear, windy and not as cold. Low: 38-41. Wind: SW/NW 10-20 mph.
Saturday: Mostly sunny and windy. High: 46-53. Wind: NW 15-25 mph.
Saturday Night: Mostly clear and cold. Low: 24-28. Wind: W 5-10 mph.
Sunday: Mostly sunny. High: low 50s.
Monday: Mostly cloudy and windy (NE 10-20 mph). High: low 50s.
Tuesday: Cloudy and windy (E 10-20 mph) with a 50% chance of rain showers. High: low-mid 40s.
Wednesday: Cloudy with a 40% chance of rain showers. High: upper 40s.
Thursday: Cloudy and windy (W 15-25 mph) with a 30% chance of rain showers. High: near 50.
Friday: Cloudy and windy (W 10-20 mph). High: near 50.
It was a cold start this morning. The coldest temperatures we have seen so far this season. If you were up early this morning, just about everything had a heavy frost on it. Here are the morning lows.
The wind has been gusting to 30 mph from the southwest this afternoon pushing temperatures into the low-mid 50s with plenty of sunshine. A few clouds have passed overhead, but otherwise a mostly sunny sky. Here is the visible satellite image from early this afternoon.
A clear sky this evening will give us the chance to see the International Space Station (ISS) two times.
Time: 6:47 PM
Duration: 6 minutes
Path: NW to E
Duration: 1 minute
A cold front is forecast to cross Iowa late tonight into early Saturday morning. Here is the WPC forecast map for Saturday morning.
The front will come through dry and switch the wind direction from the southwest to the northwest. Windy conditions are forecast to continue through early Saturday afternoon. At that time the wind will gradually diminish as high pressure moves into the area. High temperatures tomorrow will be cooler than today. Morning low temperatures Sunday will be cold again, dropping to the 20s with little to no wind.
The next concern is the storm we have been tracking for about a week now. The skies will become mostly cloudy Monday as the storm approaches Iowa from the southwest. Rain looks likely Tuesday through Thursday. The way temperatures are forecast…it will be a cold rain. Oh and the wind will be at least 10-20 mph through these days as well.
Early rain amounts could be in the 1.00-1.50” range. This would be a total of the three days combined…see map below.
There was a bit of a question on the temperatures Tuesday night dropping below freezing and the potential for a few snow showers to get mixed in. It looks like there will be warm enough air in the lowest layers of the atmosphere to keep the precipitation in the form of rain. Here is the GFS model sounding (vertical profile of the atmosphere) for Wednesday morning. Image below courtesy of twisterdata.com.
Ok now let’s take a look at Thursday…Halloween. The model guidance lately has not been very consistent with the tail end of the storm and the latest updated keeps it that way…all over the place. Take a look at the maps below for Thursday morning. The position of the low is all over the place and the back edge of the rain is all over the place as well. I hope as we get closer the models come together a little bit more.
High School Football Friday evening:
Mostly clear with temperatures in the 40s. Wind: SW 15-25 mph.
Northwestern vs. Iowa (Iowa City) 11:00 AM
Mostly sunny with temperatures warming into the 40s. Wind: NW 15-25 mph
UNI vs. South Dakota State (Brookings, SD) 2:00 PM
Click here for the forecast and current conditions.
Oklahoma State vs. Iowa State (Ames) 11 AM Family Weekend
Mostly sunny with temperatures in the 40s. Wind: NW 15-25 mph.
Posted under Forecast Discussion
This post was written by Schnack on October 25, 2013