Posts Tagged ‘dangerous’

Icing Event Begins Later Sunday

UPDATED POST:  Saturday, January 14, 2017, 3:54 p.m.

I hope everyone is having a great weekend.  Here’s my final update for the day.  I’ll have another one early Sunday.

First off, the latest models continue to slow the onset of the wintry mix Sunday.

The start time for the advisories will coincide with the start of the wintry mix of snow, sleet, and freezing rain.

A “Winter Weather Advisory” (blueish-purple shading) will go into effect Sunday into Monday for most of eastern Iowa and west-central Illinois.  This replaces the “Winter Storm Watch” that was to go into effect Sunday.

The “Advisory” will run from 3 p.m. Sunday through noon Monday for Des Moines, Henry, Jefferson, and Washington counties in Iowa, and for Henderson and Warren counties in Illinois.

For Knox and Stark counties in Illinois, the “Advisory” runs from 6 p.m. Sunday through noon Monday.

And, for the rest of the counties included in the “Advisory”, it runs from 9 p.m. Sunday through noon Monday.

Those counties are Cedar, Clinton, Jackson, Johnson, Louisa, Muscatine, and Scott counties in Iowa and Henry, Mercer, and Rock Island in Illinois.

The bottom line is the worst of the freezing rain and icing will be Sunday night through mid-morning Monday!

I’m still thinking we’ll see between one-tenth and one-quarter of an inch of ice!


UPDATED POST:  Saturday, January 14, 2017, 9:39 a.m.

Just a quick note before you read the details of Sunday’s ice storm below.  The main event and the worst of the storm will be Sunday night and early Monday.

The storm, as expected, is still showing signs of slowing down even more.

Have a great weekend and read on to be prepared.


ORIGINAL POST:  Saturday, January 14, 2017, 6:17 a.m.

The much anticipated ice storm is still coming Sunday, but it’s not likely to arrive for most of us until later in the day.

I talked about this in my Friday afternoon update and after looking at the new information this morning, I think we’ll have a few more ice-free hours Sunday.

A “Winter Storm Watch” goes into effect Sunday.

Locally, this “Watch” runs from 6 p.m. Sunday through noon Monday, except for Knox and Stark counties in Illinois.  There, the “Watch” begins at midnight Saturday and runs through 6 a.m. Monday.

At the bottom of the map you see a fuchsia and purple shading.  Those counties are under a “Freezing Rain Advisory” (fuchsia) and “Ice Storm Warning” (purple).

Later today or early Sunday morning, I expect our “Winter Storm Watch” to be changed to either a “Freezing Rain Advisory” or a “Winter Weather Advisory”.

Now, let’s talk about when this all starts and how much ice we’re expecting.

A light wintry mix may begin Sunday morning across the far south.

Hometowns from Ottumwa and Burlington, Iowa, to Galesburg, Illinois, could see a combination of snow, sleet, and freezing rain begin around midday Sunday.

For the Quad Cities and hometowns along and just south of Interstate 80, that wintry mix will start in the afternoon (4-7 p.m.).

Areas north of the metro area may see mostly snow for a while once it starts Sunday evening.

This wintry mix will transition to all freezing rain Sunday night and early Monday morning from south to north as temperatures warm overnight.

By mid-morning Monday, temperatures will be warming into the 30s and then the low-40s by afternoon, so it’ll be all rain and the ice will begin to slowly melt.


As you head south into those higher numbers, ice amounts could be closer to one-quarter of an inch.

Ice Ray

That’s a lot of ice!

Driving will be very hazardous Sunday night and early Monday.  Trees and power lines will have a heavy coating of ice, which could cause power outages and interruptions to cable, phone, and internet services.

While the ice might be pretty to look at, this is a very dangerous situation.

The only silver lining is that winds are not expected to be strong during this icing event at around 6-12 miles-per-hour.

I’ll have another update later Saturday.

Warmer temperatures are on the way starting Monday.  By the end of the next week, we could see highs in the 50s!


Dangerous Ice Storm Hits Monday

UPDATED POST:  Sunday, December 27, 2015, 4:53 p.m.

Our “Winter Storm Watch” has been upgraded to a “Winter Storm Warning”.


Over the next 36 hours from late Sunday night through Tuesday morning, eastern Iowa and northern Illinois will see a significant amount of freezing rain, sleet, snow, and rain.

This will all break out in our southern hometowns before or around midnight Sunday and move northward to the Quad Cities overnight and head into our northern hometowns early Monday morning.

The heaviest ice accumulation will be from the Quad Cities back to southeastern Iowa, where more than one-quarter of an inch will glaze surfaces.

This is a very dangerous winter storm for us because of the heavy icing threat and winds gusting to 50 miles-per-hour, at times, which will likely bring down tree limbs and power lines causing power outages.

As temperatures drop Monday evening and Monday night, we could still pick up 1-3″ of snow around the Quad Cities (likely on the lower end of that range).  The heaviest snow nearby, 2-4, will be around Iowa City and Cedar Rapids, Iowa.

Heavy snow is in the forecast for central and western Iowa (6-12″) and heavy rains are expected across central Illinois.

Join me for the very latest beginning at 5 a.m. on “Local 4 News This Morning” Monday.


ORIGINAL POST:  Sunday, December 27, 2015, AM

It’s the calm before the storm.

In a typical winter, I’d likely be watching the storm coming in and working to determine how much snow would blanket the area.

Since we’re in an El Nino winter and have seen a very warm December, this storm is going to be more a “wintry mix” storm and I’m working on the forecast and focusing on how much ice will accumulate and the snow amounts for eastern Iowa and northern Illinois are secondary.

While there’s still some model dependencies, this is looking to mainly be an ice storm for much of northern Illinois and eastern Iowa with some snow and for western Iowa, a heavy snow maker.

For the Mississippi and Illinois Valleys, we’re still under a “Winter Storm Watch” that begins late tonight in our southern hometowns and early Monday from the Quad Cities northward.

This runs through late Monday night.


This is going to be a big impact storm on a still busy travel period coming right after Christmas.  Notice that there are winter weather advisories, watches, and warnings (even a “Blizzard Warning” across Texas in the red) from the Southwestern United States through the Plains up to the Great Lakes.

After a nice day today, a wintry mix of freezing rain and sleet moves into our southern hometowns late tonight and will move northward from there arriving in the Quad Cities well before daybreak.  It’ll continue moving north Monday morning.

As temperatures hover in the low-to-mid-30s Monday, there will be periods when the wintry mix will mix with or change to rain, especially in our southern hometowns.

For the Quad Cities, we’ll see mostly freezing rain and sleet with some rain, at times, before it changes over to all light snow Monday evening and Monday night.

As for snow amounts on top of the ice accumulations, the Quad Cities will mainly see 1-3″.  Lesser snow accumulations are expected south and east with more snow off to the northwest.  Around Iowa City and Cedar Rapids, 3-6″ of snow may accumulate.  Western Iowa could see upwards to 8″ of snow with little in the way of ice.


We all know that just a little ice can cause major headaches and the bad news with this system is that we’ll likely see more than one-quarter of an inch of ice.  Some hometowns may see closer to one-half of an inch.

With winds blowing at 20 to 30 miles-per-hour and gusting to 40 or 50 miles-per-hour, this will easily bring down tree limbs and power lines causing power outages.

This has the potential and likelihood of becoming a DANGEROUS WINTER STORM!

After the ice and snow, more typical cold weather will dominate for the remainder of the upcoming week.

I’ll have another update later today.