ICYMI Sept 19…Antisolar Rays & Belt of Venus /90° Days/Baseball Sized Hail

Severe storms were in the forecast for this afternoon and evening, but little to nothing materialized. The reason for that is because of what is called a CAP. This is small layer of the atmosphere that is warmer and it prevented the air from rising quickly.


The high temperature today was 89 degrees in Cedar Rapids. I went back and looked to see how often does a high temperature of 90 degrees get reached in September at Cedar Rapids. Well, on this date is has done eight times. The chart below shows the calendar day at the bottom and temperature on the left. Each bar shows the number of days the temperature reached 90 or higher on that particular day. So again, on the 19th it was 90 or warmer 8 times on that day. Notice how fast the frequency drops off toward the end of the month…not very often.


Here is a look at how much rain has fallen so far this month across Iowa.


There is a great web page very interesting photos and descriptions of why things look the way they do. Les Cowley puts off of this information on the web page. There is a section called Optics Picture of the Day. I learn something new every time I go the web page. The photo is just one example of some great photos on there. Here is the link.


On September 18, 2002 a storm producing baseball size hail with wind gusts to 70-80 mph in Jackson County. Click here for more details on this event.


Posted under Optics, Precipitation Totals, Severe Weather, Temperatures

This post was written by Schnack on September 19, 2016

ICYMI-Sep 11… Cool Temps/Flooding/Remembering 9-11-01

It was a pretty chilly start to Sunday, with temperatures in the upper 40s to lower 50s, just slightly below average.

DMA Low Today3D

Heavy rains late last week has once again lead to a rise in area rivers in northeast Iowa.  Flood Warnings continue for the Cedar River at Cedar Falls, and the Turkey River at Elkader and Garber.

fld elk  fld grb  fld cf

Today was a day to reflect, as it’s been 15 years since the terrorist attacks in New York, Washington, D.C., and Shanksville, Pennsylvania.  Several KWWL viewers sent in photos of flags being displayed, including this one at the Decorah Fire Department, sent to us by Kurt Hageman.  The red, white and blue really stood out against the clear, blue sky.



Posted under Flooding, Photo, Temperatures

This post was written by Kyle Kiel on September 11, 2016

Latest Drought Conditions

The latest U.S. Drought Monitor was released Thursday morning, and parts of Iowa are experiencing an Abnormally Dry to Moderate Drought.  Most of the KWWL viewing area, especially across the north, have had plenty of rainfall in recent weeks.

Drought Monitor

This taken into account the precipitation that feel between July 5th and July 12th.  Fortunately, some of those areas in southern Iowa have received at least a little bit of rain from the storms that tracked through Wednesday afternoon.

KWWL 2015 MAX Storm ED

Next week, a ridge builds across the center of the country, and that brings in hot weather.  Several days are expected in the 90s, and aside from a chance for rain Saturday night and Sunday, we are looking at a mainly dry weather patter.

814temp.new     814prcp.new


Posted under Drought, Temperatures

This post was written by Kyle Kiel on July 14, 2016

First 90° Temperatures of the Season Possible This Week

If you are a big fan of summer-like temperatures, you are going to like the forecast for late in the work week and into the weekend.

First, the start of the week will feature near normal, or below normal temperatures.  A warm front tracks through on Thursday, bringing warmer temperatures and higher humidity levels.  Many of us in eastern Iowa could reach 90° or hotter by Friday.  Here’s the last time it was at least 90°, back on September 6, 2015.

Avg First 90 Deg Day - 4 Lines

Our first potential 90° days this year, are coming at the same time as the first 90° last year.

90 2015


It’s pretty typical to get our first 90° the last week of May into the first two weeks of June, climatologically speaking.  (Photo from The National Weather Service)



Looking at the forecast, warmer than normal conditions are likely from June 11-June 15.

Local pools will be busy!



Posted under Heat, Temperatures

This post was written by Kyle Kiel on June 5, 2016

A Chilly May…so far

It hasn’t been the warmest of days lately. The last time Waterloo had high temperatures near normal was May 8. We had just one day with temperatures above 75° and it was 87°. The 87° reading is also the warmest temperature so far this year. Through May 15th, the average monthly temperature at Waterloo is 3.8° below normal. The chart below shows the high temperatures (red bar) and the low temperatures (blue bar) for the month of May through the 16th. The pink dots are the normal highs for that day and the light blue dots are the normal lows for that day as well.


The map below, issued at the end of April, shows the temperature outlook for May. In eastern Iowa there was a low chance of above normal temperatures.

The 6-10 day outlook (below) issued today,  for May 22-26, shows above normal temperatures are likely. High temperatures get back into the 70s Saturday and close to 80 Sunday and Monday.



Posted under Temperatures

This post was written by Schnack on May 16, 2016

Cold Sunday Morning

It’s feeling more like late October or late March across eastern Iowa this weekend. Lows Sunday morning across eastern Iowa were in the lower to middle 30s, with some outlying areas reaching the upper 20s.

DMA Low Today3D

Waterloo and Dubuque both tied their record low temperatures of 32° (2004 and 1997, respectively).  The temperature in Cedar Rapids and Iowa City were within one or two degrees of reaching the record low.  Those record, which date back to the 1920s, still stand.

Record Lows vs Actual

If you’re not a fan of this unseasonable cold weather, there is good news.  We are looking to warm things up the second half of May.

610temp.new (1)




Posted under Records, Temperatures

This post was written by Kyle Kiel on May 15, 2016

Cold May Weekend

There’s no doubt about it, if you’ve stepped outside at all this weekend, you know it’s a bit chilly for mid-May standards.  High temperatures Saturday were in the upper 40s to middle 50s.  Normally temperatures this time of year should be in the lower 70s.

The cold temperatures continue tonight.

Frost AdvisoryTemperatures will be dipping down to the lower and middle 30s, which means frost is possible.  There may be a few clouds that track through after midnight to our west, keeping the potential for widespread frost low.  However, northeast Iowa has the best potential.  Be sure to cover up plans that are sensitive to the cold temperatures, or bring them indoors. Stay warm!

Temperatures by early Sunday morning could break record lows for May 15th.

Record Lows In Jeopardy



Posted under Temperatures

This post was written by Kyle Kiel on May 14, 2016

Near Normal April…So Far

Our recent warm weather was well above normal for the middle of April. If you add in the first part of the month, where it was really cold, it pretty much balances out to near normal…so far.

1 2 3 4

Charts from Iowa Enviromental MesoNet.


Posted under Temperatures

This post was written by Schnack on April 19, 2016

Warm Weekend

We’ve had a very nice stretch of warm, dry weather across eastern Iowa due to a large ridge in the mid levels of the atmosphere, blocking any storm systems from tracking into Iowa.  Here’s a look at the highs from Saturday (4/16).


Many areas reached the 80° mark, which is about 20 degrees above the average for April 16th.

Here’s the last time it hit 80°+ for the big four cities:

Waterloo: October 11, 2015 – 83°

Dubuque: September 24, 2015 – 81°

Cedar Rapids: April 3, 2016 – 81°

Iowa City: April 3, 2016 – 81°

Temperatures for Sunday will be similar, and the at or above average temperature trend is forecast to continue through the end of the month.





Posted under Temperatures

This post was written by Kyle Kiel on April 16, 2016

Average Last Freeze

Saturday morning’s temperatures were COLD.  Lows dipped into the middle teens to lower 20s.

DMA Low Today3D

Early to mid April is generally the last freeze many of us see across eastern Iowa.  A “freeze” is considered 28° or colder.

Last freeze


Sunday’s temperatures will be warmer, but there will be a brief cool down.  The GOOD NEWS—warmer temperatures are in the near future.  Here’s the temperature outlook from the Climate Prediction Center.



Posted under Stats, Temperatures

This post was written by Kyle Kiel on April 9, 2016