Tuesday Afternoon Storm Update

Dry air has worked its way into eastern Iowa this afternoon, shutting off the precipitation across most of the area.  The system, so far, has dropped a trace to 5 inches across the area from north to south.  However, more light snow is on the way overnight as this system wraps around.
2

The wind will be relatively light through the evening as low pressure tracks through eastern Iowa.  The light snow will begin moving through the area after 10 PM tonight.  An additional 1 to 2 inches is possible.  After midnight, the wind will turn to the north from 10 to 20 mph, which could cause some snow to blow around. Additional snow and the wind increasing after midnight from the northwest, the National Weather Service will keep some of the weather headlines in effect across northern Iowa.

DMA WatchesWarningsAdvisories

Fortunately, this is a fairly compact snow so blowing and drifting won’t be a huge deal.

Snow Forecast DMA Hand

The snow will track out of the area by morning, but the wind will still be gusty throughout the day Wednesday with temperatures slowly falling through the 20s during the day.

There will likely still be slick spots throughout the overnight hours and for Wednesday.

The rest of the week will be partly to mostly cloudy with temperatures in the 20s.  The next chance for light snow is Monday.

Share

Posted under Update

This post was written by Schnack on February 2, 2016

Monday Evening Storm Update


Areas of fog continue across part of eastern Iowa until shortly after midnight. About 3AM light snow pushes into eastern Iowa. The accumulating snow becomes widespread around 7 AM Tuesday. Snow continues across areas generally along and north of Highway 20 through the day. Areas south of Highway 20 temperatures are warmer, the mid and upper 30s. This is warm enough for rain/drizzle most of the day.

As the low moves northeast of Iowa, the colder air gets pulled south and where it was raining, it changes back to light snow during the evening hours. The snow tapers off by sunrise Wednesday. There is a sharp drop-off in the snow totals across eastern Iowa. The areas north and west of Waterloo get 5-9” while areas around Iowa City and south get 1” or less.

 

Wind gusts of 34 or 40 mph Tuesday and Wednesday will cause blowing and drifting snow. The northern areas, with more snow, will be impacted by the blowing snow a lot more.

Share

Posted under Update

This post was written by Schnack on February 1, 2016

Blizzard Conditions Tue/Wed

2

Heavy snow and strong winds are expected to create hazardous travel conditions over the KWWL viewing area, as well as much of the Midwest, late Monday night through Wednesday. It will mainly affect our viewing area Tuesday morning through Wednesday afternoon. While we could see some snow late Monday night into Tuesday morning, the heaviest snowfall is expected to be Tuesday afternoon through Tuesday night. Some snow could fall at a rate of 1 to 2″ per hour. The heaviest snow is still expected in the northwestern portions of the viewing area with many from Tama to Elkader, including Waterloo and Decorah getting 8-12″, with some isolated higher amounts. Areas to the south will depend on how much rain and sleet mix in. Anything other than snow will lower snowfall amounts, but it still looks like Cedar Rapids and Dubuque will get 6-9″ with Iowa City more in line for 2-6″.

31

Share

Posted under Update, Winter Weather

This post was written by Schnack on January 31, 2016

Confidence is Increasing

Confidence is increasing on the Tue/Wed winter storm.  Keep in mind we are still 4 days out and some adjustment in the amounts and location of the heavy band is still possible. Here is the mostly likely location of the heavy snow as of today.

3

 

The National Weather Service in Kansas City has put together a great graphic to show what you should know with confidence and why.

2

Share

Posted under Update

This post was written by Schnack on January 29, 2016

Friday Afternoon Position

1

Share

Posted under Update

This post was written by Schnack on January 29, 2016

Monday Evening Weather Update

Light will taper off tonight from west to east around midnight.  The roads have been snow covered all evening and will remain that way overnight. Storm accumulations of 1-3” north of Highway 20 and less than 1” south of Highway 20. Use caution when traveling tonight. The winds increase from the northwest blowing the snow around reducing visibility overnight.

1

 

Winds remain gusty Tuesday under a cloudy sky. The clouds clear Tuesday night before more moving back in Wednesday and into Thursday. High temperatures reach the mid and upper 30s Thursday through Saturday.

Share

Posted under Update

This post was written by Schnack on January 25, 2016

Dangerous Wind Chills

The well advertised cold is now moving into Iowa. The National Weather Service will probably be issuing either an advisory or warning this weekend for all of eastern Iowa. Here is what each mean.

Adv Warning

Wind chills are dropping below zero this evening and will remain below zero through Tuesday morning. The coldest wind chills (20-40 below zero) will occur Saturday night through Monday morning. Avoid prolonged periods of time outside if you can.

Wind Chill Description

Don’t forget about the pets outside. Make sure you take care of them as well. 

Protect your pets

There is a chance of light snow Saturday night. Any accumulation will be light, a trace to one inch mostly likely. A very small chance of 1-2” and if this were to happen it would be south of Cedar Rapids.

Snow Forecast DMA Only

We are tracking another chance of light snow for late Tuesday afternoon into early Wednesday morning. High temperatures warm back into the 20s by the end of next week.

Share

Posted under Update

This post was written by Schnack on January 15, 2016

More Frigid Weather Ahead

Enjoy the “mild” weather today and Thursday. Wind chills below zero Friday night through Tuesday.

1

Share

Posted under Update

This post was written by Schnack on January 13, 2016

Tracking the Coldest Air of the Season

Forecast Bar
Tonight: Partly cloudy. Low: 21. Winds: S 10-15 mph.

Wednesday: Cloudy with a 30% chance of light snow in the afternoon. High: 32. Winds: S 10-15 mph.

Wednesday Night: Cloudy with a 50% chance of light snow. Snow accumulation around 1”. Low: 29. Winds: S 5-15 mph.

Thursday: A rain/snow mix early in the morning otherwise light rain during the day. Highs: upper 30s.
Weather Extra Bar
The weather remains quiet through Wednesday morning then light snow begins in the afternoon. It gets a bit sloppy with rain/snow chances through the rest of the week followed by the coldest air of the season during the weekend. Light snow develops Wednesday afternoon and continues into the night. Snow accumulations will be near 1”. The map below shows the light snow Wednesday evening.

2

A light wintry mix early Thursday morning will transition to light rain by noon and continue as light rain in the afternoon. Thursday night, light snow gets mixed in at times. A light rain/snow mix is possible late Thursday night into Friday morning before it turns to light rain by mid morning and remains that way until mid to late afternoon Friday. At that point the rain will change back over to light snow and the light snow will continue into Saturday. Some accumulation is possible…at this point about 1-2 or 1-3″ are possible north of Cedar Rapids. We will fine tune that snow amount as we get closer to the end of the week.

About 0.50″ of moisture is expected through Friday evening. Most of it will fall in the form of rain.

3

Are you ready for the coldest air of the season? Ready or not here it comes….this weekend. There is a 70% chance of below normal temperatures for January 11-15.

4

 

Share

Posted under Update

This post was written by Schnack on January 5, 2016

Storm Update at 8:15 PM Wednesday

Scattered showers are expected the rest of the night. A stray storm can’t be ruled out, but the threat for any severe storms is over. Here is the radar showing the showers in western Iowa. The blue you see on the radar is snow…that is not forecast to move into eastern Iowa. The scattered showers tonight will end before sunrise Thursday and the clouds will clear from west to east during the morning hours.

KWWL 2015 MAX Storm ED

As the low, located over north central Iowa at 8:00 PM, moves northeast the wind will begin to increase across eastern Iowa.

2

The timing on that would be after midnight. The wind gusts at 8PM in western Iowa are 45 to 55 mph from the northwest.
State Wind Gust
We can expect that kind of wind tonight through most of Thursday. The wind will be gusty Thursday night into Friday morning and then taper off Friday afternoon/evening. High profile vehicles need to use caution on the road tonight through Thursday night. Here is the forecast wind gusts Thursday morning. 

DMA FutureTrack Wind Gust - RPM 4km

Share

Posted under Update

This post was written by Schnack on November 11, 2015