More Rain and Possible Severe Storms

We are tracking the potential for more severe storms tomorrow…particularly Wednesday night. A stray shower is possible this afternoon/evening otherwise a lot of sunshine continues.

There is a chance for a few showers/storms to move into eastern Iowa, south of Cedar Rapids, late tonight into early Wednesday morning. A few showers or a stray storm are possible in the afternoon. At this point, these storms don’t appear to be severe.

The best chance of storms and severe weather will be Wednesday night. Right now the timing for the severe storms would be between 7 pm and 3 AM. Large hail, damaging wind and heavy rain would be the primary threat. Isolated tornadoes are possible, but chances are low.

Here is the Storm Prediction Center Outlook for Wednesday/Wednesday night.
KWWL 2015 MAX Storm ED
As mentioned above, some of these storms will have the potential to drop some heavy rain in a short period of time. Here is the rain potential through Thursday evening.

 

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Due to the heavy rain possible south of Highway 20 with these storms, there is a FLASH FLOOD WATCH in effect Wednesday afternoon into Thursday morning.
Flash Flood Watch

 

 

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Posted under Severe Weather, Update

This post was written by Schnack on June 23, 2015

Weak Funnel Clouds

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The above photo is a funnel cloud near Marshalltown Sunday. Similar type thing is possible this afternoon.

From NWS
Conditions are favorable for weak funnel clouds until sunset south of Cedar Rapids. A few reports of funnel clouds have been reported in Iowa and Johnson Counties with scattered showers/storms. Conditions are favorable for development of more weak funnel clouds, but not favorable for the funnels to reach the ground. These funnels are typically brief, only drop a few hundred feet from the cloud base and rarely become a tornado or cause damage.

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This post was written by Schnack on June 15, 2015

Chilly Monday

At 1 PM the temperatures are 15 to 25 degrees colder than they were on Sunday. A gusty wind from the northwest is pulling much colder area south across the state. Clouds across northern Iowa are adding to the chill in the air. Look at the temperatures in northwest Iowa, they are in the upper 30s.

Vis Sat Radar Black Temp

 

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Posted under Update

This post was written by Schnack on May 18, 2015

Severe Weather Outlook Update

The threat for any severe storms is diminishing. Isolated storms possible this evening then clear overnight.
KWWL 2015 MAX Storm ED

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This post was written by Schnack on May 17, 2015

Sunday Afternoon Weather Update

An isolated shower/storm is possible late this afternoon/evening. The threat for severe weather is diminishing. If any storm were to develop and become severe…the primary threat would be damaging wind. Tonight will be mostly clear with a lighter wind. The wind increases Monday again under a partly cloudy sky and cooler temperatures. Cooler than normal temperatures continue through Wednesday. Wednesday is also the next chance for a few showers.

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This post was written by Schnack on May 17, 2015

A Rainy Night

Most locations will be dealing with rain tonight. An area of rain is spreading ENE across eastern Iowa this evening. Here is the radar this evening.
KWWL 2015 MAX Storm ED

There is an area of heavy rain southwest of Des Moines that is forecast to move across southern Iowa later this evening/tonight. The air is a little more dry across northern Iowa preventing some of the rain from moving north. Here is the rain potential through Tuesday evening. Most of this will fall tonight and early Tuesday morning.

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There is no risk of severe weather tonight across our area. Severe storms are going to remain south of Iowa tonight. The slight risk area is mainly across Missouri and southwest into Kansas.
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This post was written by Schnack on May 4, 2015

Strong Wind Today and Windy Again Tuesday

A large area of low pressure over the Midwest is the reason for the colder temperatures this week. Temperatures will remain below normal through the weekend.

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Wind gusts today were close to 50 mph. Tuesday will be windy again with gusts near 35 mph. The wind increases around 8 or 9 AM Tuesday and remains windy until after sunset.

Peak Wind Gust - 4 Lines

We had a few showers this afternoon and got reports of small hail from some locations with photos from Solon and south of Hudson.

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Here is how much rain fell Saturday/Sunday/Monday:

Waterloo 1.28″
Dubuque 0.64″
Cedar Rapids 1.69″
Iowa City 1.12″

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This post was written by Schnack on April 20, 2015

Warm and Windy Wednesday….Showers/Storms Wed Night

We are tracking a cold front and it is forecast to push though eastern Iowa Wednesday night. We will have a warm and windy (S 15-30 mph gusts 35 mph) Wednesday. High temperatures will be in the 70s and could be pushing 80 across southern Iowa.

There is a slight risk of severe weather west of I-35 Wednesday/Wednesday night.
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Any severe storms to our west will weaken before making it into eastern Iowa Wednesday night. The showers/storms (non-severe) will end by noon Thursday. Some beneficial rains are possible. Some locations could see more than 1″ of rain.
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This post was written by Schnack on March 31, 2015

Tuesday Evening Weather Update

The weather profile of the atmosphere this evening is set for rain/freezing rain/sleet/snow. It just depends on where you are in eastern Iowa. In parts of central and eastern Iowa (roughly along Highway 20) sleet and freezing rain is falling. The vertical profile of the atmosphere typically looks like this for freezing rain to occur. Similar profile for sleet.

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In northern Iowa, there is not much of a warm layer, so light snow (around 1″) is still possible tonight. In parts of central and east central Iowa there is a warm layer aloft and it doesn’t look like it is going to cool off very much while the precipitation is around.

Here is the temperature profile of the atmosphere this evening roughly over the area near Highway 20..

27° 700 mb (cold)
36° 500 mb (warm)
31° Surface (cold)

Areas south of Highway 20 are most likely to be just rain.

Here are a couple of photos of freezing rain near Stanley Tuesday evening.
Viewer Photo 1 Viewer Photo 2

Precipitation is still forecast to taper off between 1 and 3 AM, from west to east. Use caution on the roads since some of the roads will be icy. Elevated surfaces have the best chance of icing up later tonight. Temperatures will hold steady near freezing all night.

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This post was written by Schnack on March 24, 2015

Fog Thins Then Sunny

 

 

One of the charts we look at to show the depth of the fog is a Skew-t.

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Here is what was left of the fog around noon.

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The map below shows the temperatures across the nation at noon central time. The temperatures look more like spring than winter.
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This post was written by Schnack on March 10, 2015