Midwest Blizzard Takes Shape Today Jan 26, 2014

Thanks to a fast moving and powerful clipper system, fluffy snow of 2″ to 4″ will be blowing around significantly through AM Monday. This was the view from Wishek, ND from midday Sunday.

 

A weather report from a nearby observations station suggested heavy snow falling at the time of observation, but it was due to blowing snow! Winds were gusting up to near 45mph at the time!

Strong Pressure Gradient

Take a look at the line of equal air pressure across the Upper Midwest. Note how close the lines are… that tightly packed pressure gradient is whipping up quite a wind!

Wind Gusts

Here are some of the wind gusts reported earlier today.

No Travel Advised

Interestingly, nearly three-quarters of the state of ND is under a No Travel Advised.

Blizzard Warnings Continue

The National Weather Service continues Blizzard Warnings across a good chunk of the Dakotas through Iowa until PM Sunday/AM Monday.

What is a blizzard?

Blizzards are dangerous winter storms that are a combination of blowing snow and wind resulting in very low visibilities. While heavy snowfalls and severe cold often accompany blizzards, they are not required. Sometimes strong winds pick up snow that has already fallen, creating a ground blizzard.

Officially, the National Weather Service defines a blizzard as a storm which contains large amounts of snow OR blowing snow, with winds in excess of 35 mph and visibilities of less than 1/4 mile for an extended period of time (at least 3 hours). When these conditions are expected, the National Weather Service will issue a “Blizzard Warning”. When these conditions are not expected to occur simultaneously, but one or two of these conditions are expected, a “Winter Storm Warning” or “Heavy Snow Warning” may be issued.

Blizzard conditions often develop on the northwest side of an intense storm system. The difference between the lower pressure in the storm and the higher pressure to the west creates a tight pressure gradient, or difference in pressure between two locations, which in turn results in very strong winds. These strong winds pick up available snow from the ground, or blow any snow which is falling, creating very low visibilities and the potential for significant drifting of snow.

Where did the term blizzard come from?

In the 1870’s, an Iowa newspaper used the word “blizzard” to describe a snowstorm. Previously, the term blizzard referred to a canon shot or a volley of musket fire. By the 1880’s, the use of the word blizzard was used by many across the United States and in England.

The upper Midwest and Great Plains of the United States tends to be the region that experiences blizzards most often. With few trees or other obstructions to reduce wind and blowing snow, this part of the country is particular vulnerable to blizzards. However, blizzards can occur in any location that has a climate that experiences snowfall. Northern Arizona can experience blizzard conditions when a strong low pressure system moves across southern Arizona and high pressure builds strongly into the Great Basin. However, these conditions are rarely met due to the infrequency of strong low pressure systems moving through the state.

What makes a blizzard dangerous?

Blizzards can create life-threatening conditions. Traveling by automobile can become difficult or even impossible due to “whiteout” conditions and drifting snow. Whiteout conditions occur most often with major storms that produce a drier, more powdery snow. In this situation, it doesn’t even need to be snowing to produce whiteout conditions, as the snow which is already on the ground is blown around, reducing the visibility to near zero at times.

The strong winds and cold temperatures accompanying blizzards can combine to create another danger. The wind chill factor is the amount of cooling one “feels” due to the combination of wind and temperature. During blizzards, with the combination of cold temperatures and strong winds, very low wind chill values can occur. It is not uncommon in the Midwest to have wind chills below -60F during blizzard conditions. Exposure to such low wind chill values can result in frostbite or hypothermia. For more information, go to the NWS wind chill web page.

Blizzards also can cause a variety of other problems. Power outages can occur due to strong winds and heavy snow. Pipes can freeze and regular fuel sources may be cut off.

People should never venture out in blizzards, nor should they continue to travel if a storm is upgraded to a blizzard. To protect yourself from the effects of winter storms, including blizzards, the National Weather Service suggests the following web resources:

http://www.wrh.noaa.gov/fgz/safety/win-info.php?wfo=fgz

http://www.wrh.noaa.gov/warnings.php?wfo=fgz

Thanks for checking in and have a great week ahead. Don’t forget to follow me on Twitter @TNelsonWNTV

 

2 responses to “Midwest Blizzard Takes Shape Today

Leave a comment

Your email address will not be published. Required fields are marked *

Tweets

IN CASE YOU MISSED IT - This was just one of several tornadoes on the ground on Thursday. See more photos/video her… https://t.co/0ZMAQYcWdR

1 hour ago by WeatherNation

The flooding in #McAllen today came after a week of wet weather, but also from a record amount of rain for the day… https://t.co/tqqmxdd3Mo

2 hours ago by WeatherNation

TEXAS FLOODING - This is one way to get around flooded spots! The threat for flooding continues across the southern… https://t.co/yu5UQDbQ8d

2 hours ago by WeatherNation

TOP VIDEO OF THE WEEK - Check out this sped up progression of the tornado that moved through Stoddard County, MO on… https://t.co/ozOaM5l6F2

3 hours ago by WeatherNation

ANOTHER LOOK - Here's a second view of the stovepipe tornado that moved through Missouri earlier today! #mowx https://t.co/y6gR5GCFS6

4 hours ago by WeatherNation

Confirmed tornado: Several people in southeast Missouri saw this tornado earlier in the evening (around 6:20 p.m. T… https://t.co/BwVMQDMWO2

5 hours ago by WeatherNation

This tornado yesterday in Perry, Iowa has officially been rated an EF-0 with max winds around 80 mph and no injurie… https://t.co/yUiSyxNfaa

6 hours ago by WeatherNation

We hope this man is okay after numerous reports of submerged cars in McAllen, TX. This is one of many communities u… https://t.co/BlqxcwurQJ

6 hours ago by WeatherNation

Here's an awesome capture by @jeffmorrisAR in northeast Arkansas of a tornado-warned storm earlier today. #ARwx https://t.co/kAYPl1OxbW

7 hours ago by WeatherNation

There's another area to watch for development in the Eastern Pacific, continuing an active start to the season ther… https://t.co/8hQcLWRfqX

8 hours ago by WeatherNation

CAUGHT ON CAMERA - Check out this eerie video of a tornado near Darlington, ID earlier today...watch as at the end… https://t.co/cB1k8Q1MDc

8 hours ago by WeatherNation

Texas Governor @GregAbbott_TX has announced a disaster declaration for 6 counties in Texas. Meteorologists at… https://t.co/yT3Kg8nkNw

8 hours ago by WeatherNation

RT @NWSDesMoines: We surveyed minor tornado damage just west of Perry this morning. Rated EF0 with mainly sporadic tree and crop damage. No…

9 hours ago by WeatherNation

EARLIER TODAY - At least one tornado confirmed near Yates City, IL Thursday afternoon...with an continued threat fo… https://t.co/GPH1E0bA85

9 hours ago by WeatherNation

Wow, that's a lot of rainfall in Texas this week so far... #TXwx https://t.co/FYwLcu2yw5

10 hours ago by WeatherNation

#BREAKING: Severe T-Storm Watch has been issued for parts of the Central U.S. through 9 PM CDT. https://t.co/ZOw6O98z5E

10 hours ago by WeatherNation

Feels a bit chilly across the Northeast on this first day of summer! You can thank the "Back Door Cold Front" for t… https://t.co/OLRlU4znGC

11 hours ago by WeatherNation

STATE OF EMERGENCY declared for @CityofMcAllen by Mayor Jim Darling due to severe flooding. #McAllen #TXwx https://t.co/yh1RjBoqU2

11 hours ago by WeatherNation
Follow Us