Wednesday Afternoon Update

Another round of showers are possible later tonight as they move from southwest to northeast. The trend is for them to fall apart as they move toward northeast Iowa and southwest Wisconsin. The gusty east wind continues tonight making the lows near 40° feel cooler.
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Another round of scattered showers Thursday is going to be the last of this storm system. The wind gradually diminishes through the day and becomes light by evening. The rain ends by the evening hours as well, however the clouds linger through the night.

Friday turns out a little warmer with highs near 60 with dry conditions. It might not be sunny, but at least it will be dry.

We are tracking another storm system forecast to make our weekend a wet, breezy and cool one. The best chance of rain is Saturday afternoon through Saturday night. Scattered light showers will linger Sunday with a gusty east wind. The map below shows the rain forecast from Friday evening through Saturday evening. 

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Posted under Update

This post was written by Schnack on April 27, 2016

Sunday Storm Update

8:30 PM UPDATE
The storms remain in western Iowa this evening. As they move east they are forecast to weaken significantly so that we see a few showers overnight. Some locations remain dry tonight. Here is the latest severe weather outlook tonight.

KWWL 2015 MAX Storm ED

ORIGINAL POST

Eastern Iowa remains dry through this evening with above normal temperatures. Showers and storms are forecast to develop this afternoon in western Iowa with a few storms severe (damaging hail and wind). The risk for severe storms will be across western Iowa.

KWWL 2015 MAX Storm ED

 

There is currently a Severe Thunderstorm Watch in effect for western Iowa until 10 PM.
KWWL 2015 MAX Storm ED

The storms track into central Iowa this evening and weaken a bit. Here is  look at where the storms are forecast to be around 9 PM.

DMA 3D PM FutureTrack SatRad - RPM 4km

They continue to weaken as they cross I-35 heading into eastern Iowa. Isolated weakening storms are possible in our western counties between 9-11 PM.  The storms continue to weaken to scattered showers and eventually scattered light showers after midnight. Here is a look at the rain at 11 PM.

DMA 3D PM FutureTrack SatRad - RPM 4km 2

By the time 2 AM rolls around isolated light showers are possible. Some locations tonight will be dry.
DMA 3D PM FutureTrack SatRad - RPM 4km 3

 

 

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Posted under Update

This post was written by Schnack on April 24, 2016

Friday Evening Update on Sunday Storms

Here are a couple of model outputs on the potential for any storms Sunday evening. Both show storms about 7 or 8 PM in central and western Iowa. As they continue to move east overnight, they are expected to weaken.

DMA 3D PM FutureTrack SatRad - RPM 4km 1

Any storm that develop in western Iowa, particularly southwest, some of them could be severe with large hail and damaging wind.
KWWL 2015 MAX Storm ED

 

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This post was written by Schnack on April 22, 2016

Cold Saturday Morning

Cold Thermometer
Average Last Freeze (28° or colder)
Decorah Apr 23
Waterloo Apr 18
Dubuque Apr 13
Cedar Rapids Apr 10
Iowa City Apr 8

Low temperatures Saturday morning forecast to reach the low 20s with the usual colder spots potentially in the upper teens.

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Posted under Temperatures, Update

This post was written by Schnack on April 7, 2016

Wednesday Afternoon Storm Update

Scattered showers and storms are expected through midnight. Some storms will have gusty wind, hail and heavy downpours. The best chance of storms would occur between 7 PM and midnight. After midnight, the storms will be east of Mississippi River with lingering scattered showers. The map below shows where storms may be at 8 PM. 

DMA 3D PM FutureTrack SatRad - RPM 4km

 

If storms were to become severe, the best locations would be south of Cedar Rapids. This afternoon we are dealing with a few light rain showers.

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Cooler conditions move into the area Thursday as the low moves east of Iowa. A gusty northwest wind will keep temperatures mainly steady. A few light rain showers are possible with a cloudy sky.

Thursday night temperatures drop to near freezing late. A few light rain showers may mix with a few snowflakes into Friday morning. Isolated rain showers are possible Friday with a gusty northwest wind.

The wind is stronger Saturday with gusts to 40 or 45 mph and highs in the low 40s. Sunday the wind turns to the southwest pushing warmer air in our direction with highs in the 50s. The wind is breezy, but not as windy as Saturday and the stronger wind is expected Sunday afternoon. The chart below shows the sustained winds to be around 25 or 30 mph. 

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Posted under Update

This post was written by Schnack on March 30, 2016

Tracking Storms Possible for Wednesday Evening

Scattered showers are forecast to push through eastern Iowa tonight into Wednesday morning. It remains breezy overnight with mild lows in the 40s.

During the late afternoon and evening Wednesday, we have a chance of thunderstorms. Some of the storms may produce gusty wind, hail and heavy downpours. A gusty south wind during the day, ahead of the low pressure system, keeps highs above normal in the upper 50s and low 60s. Here is the risk for severe storms Wednesday. 

KWWL 2015 MAX Storm ED

 

The map below shows where the potential for severe storms might be during the evening.

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The storms will taper off late Wednesday night, but showers may continue. The wind will be light for a few hours as the low pressure moves over eastern Iowa.

 

Here is the forecast track of the low pressure system. The low will be just east of Iowa Thursday morning. 

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A few lingering light showers are possible Thursday. The low moves east of the Mississippi River turning the gusty wind to the northwest. Cooler conditions are expected with highs in the 40s.

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Posted under Update

This post was written by Schnack on March 29, 2016

Wednesday Afternoon Storm Update

Rain will change to snow tonight north of a line from New Hampton to Prairie du Chien. Snow will be heavy at times near the IA/MN state line. Snow totals will be 4-8”. A rain/mix from the previously mentioned line south to Highway 20, will minimize the snow amounts (1-4”). South of Highway 20, rain and thunderstorms move through before midnight. After midnight, light rain changes to light snow with any snow accumulation 1” or less.

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Snow ends Thursday morning then the clouds clear Thursday evening as the wind gradually diminishes. A mostly clear sky is expected Thursday night. A mostly sunny sky Friday morning will turn to a cloudy sky by the afternoon.

We are tracking the chance of rain to push through the area Saturday with highs in the upper 40s. Sunday turns out dry with temperatures in the mid 40s.

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Posted under Update

This post was written by Schnack on March 23, 2016

Storm Update

The sky remains cloudy across Iowa tonight. Light rain develops Wednesday morning. Areas north of Highway 20 will see the rain mix with snow and then toward to all snow during evening hours. Areas south of Highway 20 will have light rain turn to thunderstorms in the afternoon.

Wednesday night the snow becomes heavy at times across northern Iowa, while scattered light snow showers are possible across southern Iowa. The snow ends Thursday morning with totals as high as 4-8” from New Hampton to Iowa/Minnesota state line. From New Hampton to Highway 20…1-4” of snow is expected and areas south of Highway 20 will see 1” or less.

 

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Posted under Update, Winter Weather

This post was written by Schnack on March 22, 2016

Snow Wednesday Night

A mild night is ahead with a mostly clear sky. Early Tuesday will have sunshine, but clouds move in quickly making for a mostly cloudy sky for most of the day. Despite the clouds, high temperatures will reach the 60s. Tuesday night remains mostly cloudy then the mid-week storm we have been tracking.

Rain showers are expected Wednesday with a chance of isolated storms near and south of Cedar Rapids during the late afternoon and evening hours. Rain transitions to snow Wednesday night and will taper off Thursday morning. Snow amounts of 4-8” across northern Iowa (north of Oelwein) to as little as 1” near Iowa City is possible by noon Thursday. The wind is strong Wednesday and Thursday as the storm moves across southern Iowa. The morning commute Thursday will be difficult with the forecast snow amounts.

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Posted under Update

This post was written by Schnack on March 21, 2016

A Band of Heavy Snow

Between 9PM and 3AM a band of heavy snow will develop in the outlined area north of Cedar Rapids.

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Posted under Update, Winter Weather

This post was written by Schnack on February 29, 2016