Posts Tagged ‘dangerous wind chill’

Dangerous Wind Chills Tonight & Sunday

ORIGINAL POST:  Saturday, December 17, 2016, 1:12 p.m.

Good Saturday afternoon!

Two things to point out on this 1 p.m. update.


The snow is closing in on the Quad Cities.

Also, ahead of the front that’s bringing the snow, we’re around 20°.

Behind this front, it’s already 0° across northwestern Iowa and the winds chills are around -15° to -20°.

We’re still under a “Winter Weather Advisory” until midnight Saturday for about one to three inches of wind-blown snow.


Also, Saturday night and Sunday, as temperatures drop well below zero Saturday night and much of Sunday, the gusty winds will produce dangerous wind chills of -20° to -40°.

All of early Iowa and northern Illinois are under either a “Wind Chill Advisory” or a “Wind Chill Warning” from 9 p.m. Saturday through noon Sunday.


Brace yourself.


Snow & Ice Likely Friday & Saturday

UPDATED POST:  Friday, December 16, 2016, 4:37 p.m.

Light freezing rain and light snow are already being reported across Iowa and Illinois Friday afternoon. This will make roadways slippery tonight.

After a break in the wintry mix later tonight into Saturday morning, a strong cold front blasts through the area early Saturday afternoon and temperatures crash into the single digits shortly after dark and well below zero into Sunday morning.

This front will also bring several hours of light to moderate snow and this is when we’ll see our main accumulation.  Unfortunately, it’ll also be blown around by strong winds causing driving nightmares.

Snowfall totals below are still on target.

I’ve also been talking about the dangerous wind chills that will rush in as the storm departs.

Here are the counties that will be under a “Wind Chill Advisory” and a “Wind Chill Warning” from 9 p.m. Saturday through noon Sunday.

It’ll feel like -20° to -40° during this time!

Be safe out there this weekend!


ORIGINAL POST:  Friday, December 16, 2016, 5:49 a.m.

The third weekend winter storm in as many weeks gets underway Friday and will last through much of Saturday.

Bitterly cold temperatures and dangerous wind chills follow Saturday Night through Monday morning.

A “Winter Weather Advisory” goes into effect at noon Friday across our northern hometowns and for the rest of the Mississippi and Illinois Valleys Friday evening.  This advisory runs through midnight Saturday.


After a quiet Friday morning, light snow will develop in our western and southwestern hometowns later this morning.  The snow spreads across all of the area Friday afternoon into Friday night and early Saturday.

It’s looking more likely that warmer air will be pulled into this system along and south of Interstate 80.  This will cause the snow to mix with and change over to sleet and then freezing rain.

Across our northern hometowns, it’ll stay in the form of snow.

We get a break from the snow and wintry mix Saturday morning, but snow will re-develop again by Saturday afternoon and last for about six hours.

This is when we’ll see most of our snow accumulation.  The snow ends by midnight Saturday night.


The heaviest snow will be from Maquoketa, Iowa, to Mount Carroll, Illinois, northward.  Four inches or more will accumulate there.

Along Interstate 80 and in the Quad Cities, I still think 2-4″ of new snow will fall.

South of the Quad Cities from around Burlington, Iowa, to Monmouth and Galesburg, Illinois, an inch or two will fall, but they’ll also see some light ice accumulations.


On top of the snow (and ice) accumulations, bitterly cold temperatures and dangerous wind chills return.

When you wake up Sunday and Monday mornings, lows will be around -10° in the Quad Cities and even colder to the north.

Once you factor in the wind, it’s going to feel like -20° to -40°.  It only takes minutes for frostbite to set in.

Highs Sunday will stay below zero to the north and near zero in the Quad Cities.  Southern hometown will rise to the single digits.

By the middle of next week, temperatures will rebound back into the 30s.


Winter Storm Friday & Saturday

UPDATED POST:  Thursday, December 15, 2016, 4:20 p.m. 

As the bitter cold temperatures and wind chills from Thursday morning eases, we’re getting closer to our next winter storm.

A “Winter Weather Advisory” has now been issued for Friday evening through midnight Saturday for all of the Mississippi and Illinois Valleys.


While there may be some light snow tonight to the west and northwest of the Quad Cities, our snow storm kicks in Friday afternoon and evening.

By Friday night, while it remains snow across our northern hometowns, the snow will mix with or change to freezing rain through Saturday morning in our southern hometowns. We’ll likely see a light accumulation of ice there.

The heaviest of the snow will come Saturday afternoon into the evening hours.  The snow will end before midnight Saturday.

Accumulations will be higher north (4″ or so).  I’m still thinking 2-4″ in the Quad Cities and along Interstate 80 with 1-2″ in our southern hometowns.


Join me for “Local 4 News This Morning” Friday from 5-7 a.m. for the very latest.


UPDATED POST:  Thursday, December 15, 2016, 12:44 p.m. 

A “Winter Weather Advisory” goes into effect at noon Friday and runs through 6 p.m. Saturday for Clinton and Jackson counties in Iowa and for Carroll, Jo Daviess, and Whiteside counties in Illinois.

Early projected snowfall totals and storm timing details are in the text below.

By the way, the “Wind Chill Advisory” has expired.


ORIGINAL POST:  Thursday, December 15, 2016, early morning 

There are many weather concerns that we’ll be dealing with over the next several days.

A “Wind Chill Advisory” in effect through 10 a.m. today for much of the Mississippi and Illinois Valleys.  While temperatures will drop to around zero to -5° Thursday morning, it’ll feel more like -15° to -30°.

Our next winter storm begins to affect some of our northern and western hometowns later tonight with some light snow.  While this will cause some slick spots, accumulations will be on the low side.

The snow really kicks in Friday afternoon into Friday night and early Saturday.  There are indications that enough warm air will be pulled into this system south and east of the Quad Cities to cause the snow to change over to sleet and then freezing rain.

As you know, ice accumulations on the roadways, trees, and power lines are much worse than just snow.

Ice Ray

This wintry mix will change back over to snow Saturday afternoon.  Across our northern hometowns, this event will likely be all snow.

Now let’s talk about possible snow accumulations.


I advise you to keep up on the latest forecast because these numbers could change or shift north or south depending on the path of the storm and how much warm air is brought into the system.

I think the heaviest snow will be 4″ or more from around Clinton, Iowa, to Sterling, Illinois, northward.

Along Interstate 80 and in the Quad Cities, I think 2-4″ of snow will accumulate.

South of the Quad Cities from around Burlington, Iowa, to Monmouth and Galesburg, Illinois, an inch or two will fall.  This area may also see some ice accumulation.

Once this storm departs Saturday night, bitterly cold and dangerously low temperatures will return.

When you wake up Sunday and Monday mornings, lows will be about -10° in the Quad Cities and even colder to the north.  When you add in the wind, wind chills could be as low as -20° to -40°.  It only takes a short period of time outdoors for frostbite to set in.

Highs Sunday will likely stay below zero to the north and near zero in the Quad Cities.

Later next week, temperatures will rebound to the 20s and 30s.

Again, keep up on the latest forecast with this incoming winter storm.


Dangerous Temperatures & Wind Chills

Temperatures Tuesday evening dropped to below zero north of the Quad Cities before southerly winds brought in slowly rising temperatures.

Sterling, Illinois, dropped to -5°, while Davenport dropped to zero.

The coldest air of the season arrives tonight and Thursday morning.

Low temperatures will drop to below zero across all of the Mississippi and Illinois Valleys.   When the winds are factored in, it’ll feel like -20° to -30°, which is very dangerous if you have to be out for any period of time.


A “Wind Chill Advisory” goes into effect Wednesday evening through 10 a.m. Thursday.

Highs Thursday will likely stay in the single digits in our northern hometowns to around 12° in the Quad Cities and 15° in our southern hometowns.


Light snow will break out late Thursday night into Friday morning.  The best chance of seeing light accumulations during that time period will be around the Quad Cities to the northwest.

Snow will really kick in Friday afternoon into Saturday morning.  South and east of the Quad Cities, warm air aloft could cause the snow to change to sleet and then freezing rain.

While that’ll cut back on snow accumulations there, icy conditions will make it more dangerous.

The wintry mix will change back to snow Saturday before ending by evening.

Several inches of snow are likely.  By Thursday, I’ll have a much better idea of accumulations.

It gets even colder Sunday with highs only in the single digits with a low of -10° Sunday night.  That’s the temperature and not the wind chill!

The bottom line:  Bitterly cold temperatures through early next week and a winter storm is likely this Friday and Saturday.


Bitter Cold Wind Chills Today

When you walk out today, it’ll be hard to believe that just two days ago it was raining and temperatures were in the low-40s!  Even yesterday before the cold air started rushing it, we were in the mid-30s.

Today is going to be the coldest day of the winter season.

A “Wind Chill Advisory” is in effect through midday for all of Iowa and a portion of west-central Illinois. This includes the Quad Cities.

We’re starting out at 1° this morning with a wind chill of -20°.

The one-degree start ties the coldest morning this winter back on November 22, 2015.  That occurred right after the 9.9″ of snow that fell in the Quad Cities from the two-day snow event November 20th and 21st.

Snow Saturday Morning

However, back in November when we hit 1° for the low, highs the next day were back in the 40s!

That definitely won’t be the case today as many hometowns may not even reach 10° for the high.

How’s this for a silver lining:  While it’s starting very cold in the Quad Cities, it could be worse.  Early this morning, it’s -15° in Spencer, Iowa, with a wind chill of -36°.  Mason City, Iowa, is at -12° this morning with a wind chill of -35°!

For those keeping record, we officially picked up 0.2″ of snow Saturday in the Quad Cities from the snowstorm that brought 4-5″ around Bureau County, Illinois.

As for snow chances this week, a little clipper could bring an inch or so Monday and Monday night and then another shot of cold air for Tuesday.  It’ll be similar to today’s weather with highs struggling to reach 10°.

Another snow event is possible later this week.


Dangerously Cold Today & Tomorrow

I’ll start off today’s blog with the good news before we have to talk about the bad news.

A gradual warming trend begins Tuesday, although highs will only be in the single digits above zero.

However, by Friday and the weekend, we’ll enjoy a “January Thaw” with high temperatures in the low-to-mid-30s!!!

Now, the bad news.

A “Wind Chill Warning” remains in effect through noon Tuesday.  Temperatures today will only climb to about -7° to -12°, but with the 20-35 mile-per-hour wind factored in, it’s going to feel more like -30° to -40° today and tonight.

Look at these temperatures and wind chills from earlier this morning when I hope you were all warm and snuggled up in bed.

Lows Monday night will drop to around -10° to -20°.  But, again, with the wind, it’ll feel more like -30° to -40°.

Here’s a wind chill chart for you to reference if you know the temperature and the wind speed.

Wind Chill Chart

Please be careful out there today, tonight, and tomorrow.

In addition to snow and blowing snow, there could be some more snow flurries today and Tuesday in the cold air.

Light snow is possible Wednesday and Wednesday night with some minor accumulation possible.


With the “January Thaw” late week, we could be seeing a wintry mix of rain and snow during the day Friday and Sunday and some light snow at night.

Be safe and try to stay warm.  Remember to check on the elderly and the pets outdoors!


Mr. Ten Below, go away!

Snow Miser


Arctic Chill Arrives Behind Snow

Score one for the Snow Miser!

Snow Miser

Despite my best efforts of upping the snow total forecast for the Quad Cities, it turned into a nightmare when the final totals came in.

Snow 1

Officially, in the Quad Cities, Moline, Illinois, picked up 7.8″ of snow in the past 24 hours, while Davenport only saw 1.1″ at the airport!  Seriously, that much of a difference over just a few miles!  More on the snow coming up, but the cold is now the bigger story for days to come.

Saturday’s high temperature in the Quad Cities ahead of our latest accumulating snow was 33°.

Sat High

It’s going to be some time before we see it that warm again with Arctic cold and brutal, dangerous wind chills settling in today through Tuesday.

While we started out in the teens very early Sunday morning, temperatures will continue to fall throughout the day and by the time you wake up Monday morning, lows will be around -20°.  Once you factor in the wind, it’s going to feel more like -30° to -50°!

Wind Chill Warning

A “Wind Chill Warning” (blue shading) is in effect from Sunday through noon Tuesday for all Iowa and Illinois and much of the northern part of the United States!


Monday is going to be the worst day with high temperatures remaining well below zero in the -5° to -10° range.  Some hometowns northwest of the Quad Cities may not even reach -10° for highs!

Those are the actual temperatures.  The wind chills will be continue to be down around -40° into Tuesday morning!

By the way, since we’re in record cold territory, the coldest high temperature ever in the Quad Cities is -12°!

This is a dangerous and life-threatening situation and frostbite and hypothermia (the loss of body heat required to function) can sneak up on you.  Be dressed properly to go outside and be prepared in case you get stranded outdoors.

I know this may sound technical and the temperatures are in Celsius, but focus more on the symptoms of hypothermia on the left hand side of the graphic and actions to take on the right side.


The good news is that by the end of the upcoming week, we’ll likely see highs above 30° again!

Now, let’s talk about snow.

Snow 2

If you watched me Friday on CBS4, I stated that the latest computer models were hinting that the heavier snow from central Illinois might back its way into the Quad Cities.  And, if that materialized, we’d definitely get more than an inch of snow in the metro area.

When I posted my forecast Saturday in my blog, I said 1-3″ for much of the area and more down to the southeast.

Snow This Weekend

We easily surpassed that at Quad City International Airport, the official reporting station for the Quad Cities.  In Moline, we picked up 7.8″, but the airport in Davenport only received 1.1″.

Here is the reason why we got more snow than we all forecast.  When the snow started Saturday afternoon, temperatures were around 30° and, typically, at temperatures like that you get a 10:1 ratio of snow.  It’s wetter.  From noon to 6 p.m. Saturday, 1.3″ accumulated in Moline.

As temperatures drop, the snow has a lower-moisture content and it can easily fluff up to several inches.  That is definitely what happened in some of our hometowns.

In Moline, between 6 p.m. and midnight Saturday, we picked up another 3.1″.  And from midnight to 6 a.m. Sunday, another 3.4″ for that 7.8″ total!  Score one more for Mother Nature and Old Man Winter!

However, that still doesn’t make up for the sharp cut-off from Moline to Davenport from almost eight inches of snow to just about an inch!

The snow is pretty much over now.

Fish Pond Snow

Here are some of the snow totals reported in to my colleagues at the National Weather Service:  9.5″ Monmouth (IL); 7.8″ Moline (IL)*; 7.2″ Altona (IL); 7.0″ Galva (IL); 7.0″ Galesburg (IL); 7.0″ Stronghurst (IL); 6.8″ Macomb (IL); 6.1″ Princeton (IL); 6.0″ Burlington (IA); 6.0″ Kewanee (IL); 5.7″ Keokuk (IA); 5.4″ New Windsor (IL); 5.3″ Geneseo (IL); 4.5″ Fort Madison (IA); 3.1″ Colona (IL); 3.5″ Industry (IL); 3.0″ Mount Pleasant (IA); 2.8″ Dallas City (IL); 2.5″ Cambridge (IL); 2.0″ Freeport (IL); 1.8″ Bettendorf (IA); and 1.1″ Davenport (IA).

That 7.8″ is the official total for the Quad Cities out of Moline, Illinois.  There are other parts of Moline with less snow than that.

Please brace yourself for the dangerous cold and wind chills next few days!