Winter Weather Preparedness Week concludes. Are you ready for winter?
As we have talked about this week, winter weather can be dangerous and downright deadly. However, being prepared helps to ensure that you and your family remain safe when the snow starts to fly or other winter weather conditions occur.
It is very easy to ignore the dangers of weather – no matter the season – and find yourself saying, “I wish I would have….” Now is the time to think about how you can prepare for these conditions, before it is too late and you find yourself wishing you had.
In this sixth and final message in a series on Winter Weather Preparedness from the National Weather Service, ThorntonWeather.com reviews the topics we covered this week and directs you to the previous articles and other resources to help you get ready.
PUBLIC INFORMATION STATEMENT
NATIONAL WEATHER SERVICE BOULDER CO
600 AM MDT SAT OCT 22 2022
Enjoy the great outdoors in Colorado this winter season, but watch the weather.
Avalanches claim lives every year in Colorado. Before you head to the mountains, be sure you are prepared! (Wikimedia Commons)
As snow starts to fall, many Coloradoans and out of state visitors will take advantage of it and head to the mountains for a variety of outdoor activities. Whether skiing, snowshoeing, or hiking, anyone who spends time outdoors in the high country needs to be aware of the danger avalanches present. On average six people die in Colorado every year from avalanches and being prepared is an essential survival skill.
PUBLIC INFORMATION STATEMENT
NATIONAL WEATHER SERVICE DENVER CO
600 AM MDT FRI OCT 21 2022
Avalanches – Are you prepared?
Thousands of avalanches occur each winter in the mountains of Colorado. With the enormous popularity of winter sports in Colorado, this poses a risk to skiers, snowboarders, snowmobilers, and people traveling in the backcountry. On average 6 people die in Avalanches in the state of Colorado every year. Anyone who travels into the high country in the winter should be prepared for avalanches And know how to avoid them.
The most important thing to know is how to get information on current avalanche conditions. Check the Colorado Avalanche Information Center website at http://avalanche.state.co.us/ for the current avalanche forecast and the National Weather Service website http://www.weather.gov for the current weather forecast in your area. Knowing the current and future conditions will help you make good decisions in the backcountry.
A little information about avalanche safety can go a long way. Most avalanches occur during or just after snowstorms on a slopes between 30 to 45 degrees. A significant snowfall may result in an unstable snowpack. By waiting at least 36 hours after a big snow or wind storm before you go into the mountains the Snow may become more stable and less likely to avalanche. If you stay in valleys away from avalanche chutes, in stands of dense trees, or on gentle slopes you can decrease the risk of being caught in an avalanche.
If you are a skier or snowboarder at a commercial ski area the risk from avalanches is lower than in the backcountry. Ski patrols work to reduce the chance of an avalanche on open slopes. Respect the rules of the ski area, stay on open slopes, and do not stray out of bounds or into closed areas. The avalanche risk is higher outside of the ski area boundaries.
If you want to enjoy the great outdoors in areas prone to avalanches…You can reduce the danger by following a few simple rules:
Check the current avalanche forecast to get information on current and forecast avalanche conditions. Also check the latest weather forecast to see if conditions are likely to change while you are in the backcountry.
Never travel alone. Always have one or more companions. Even small avalanches can be fatal. If you are alone and get trapped, you may not be found until spring.
If crossing a slope that may be prone to avalanches, do it one person at a time. You want to minimize the impact on your party if an avalanche is accidentally released.
In avalanche country, all members of your party should carry avalanche rescue equipment including an avalanche beacon, shovel and probe pole. This increases your chances of a successful rescue and finding your friends alive.
Avalanche conditions in Colorado are monitored and forecasted by the Colorado Avalanche Information Center, CAIC. You can get more information on avalanches, avalanche forecasts, avalanchesafety and request a safety class from CAIC. Go to their website…Http://www.colorado.gov/avalanche or call the center at 303-499-9650.
Winter Weather Preparedness Week continues through Saturday. Now is the time to get prepared for winter so you can safely enjoy the outdoors and travel safely when the snow flies.
Wind chill is a life threatening weather danger that is often ignored or underestimated.
Winter weather can not only be trying on the mind and soul, it also presents very real dangers to the human body. Extreme wind chills can be deadly and bring on the outset of frostbite and hypothermia. Here in Colorado, all residents should be aware of these hazards and be prepared to deal with them.
In this fourth in a series on Winter Weather Preparedness from the National Weather Service, ThorntonWeather.com helps you understand wind chill and how to protect yourself from frostbite and hypothermia.
PUBLIC INFORMATION STATEMENT
NATIONAL WEATHER SERVICE DENVER/BOULDER CO
600 AM MDT THU OCT 20 2022
Extreme wind chill – Potentially life-threatening and often overlooked
Extremely cold air comes every winter in at least part of the country and affects millions of people across the United States. The arctic air, combined with brisk winds, can lead to dangerously cold wind chill values. The Wind Chill Index helps you determine when dangerous conditions develop that could lead to frostbite or hypothermia. It takes into account heat loss from the human body to its surroundings during cold and windy weather. The calculation utilizes wind speed in miles per hour and temperature in degrees Fahrenheit. For example, a temperature of minus 5 degrees occurring with a 20 mph wind gives a wind chill near minus 30 degrees. This means that your body will lose heat at the same rate as it would if the air temperature were minus 30 degrees with no wind. Wind Chill values near minus 25 degrees mean that frostbite is possible within 15 minutes.
How does the wind affect wind chill? See the chart below.
Frostbite is the freezing of skin and the body tissue just beneath it. It first affects exposed body tissue where blood circulation may be limited such as your fingers, toes, nose and ears. To minimize frostbite, make sure all body parts are well covered. When frostbite starts, feeling is lost in the affected area and the frozen tissue will take on a white or pale appearance. If you suspect you are experiencing frostbite, hold the frostbitten area closely against warm skin to return blood flow and warmth to the affected area.
Hypothermia is a dangerously low body temperature and is the most common winter weather killer. When you hear of a hiker, climber, hunter or a stranded traveler perishing from cold weather exposure, hypothermia was the cause. Most people are surprised to learn that hypothermia deaths can occur with temperatures between 30 and 50 degrees. If you or your clothing are wet, then hypothermia becomes even more likely.
Warning signs of hypothermia include uncontrollable shivering, memory loss, disorientation, slurred speech and drowsiness. Immediate medical attention should be given to victims suspected of suffering from hypothermia. If no help is available, the victim should be warmed slowly with warm liquids along with dry clothing and blankets.
The National Weather Service will issue wind chill advisories and warnings when a deadly combination of wind and cold air threaten. A Wind Chill Warning will be issued for the following wind chill temperatures:
Mountains…minus 35 degrees Fahrenheit or colder.
Lower Elevations…minus 25 degrees Fahrenheit or colder.
When cold weather threatens, follow these tips for survival:
Stay dry, wet clothing results in much faster heat loss from your body. Wear waterproof insulated boots.
Stay covered, wear mittens or gloves and wear a hat. At least half of your body heat is lost if your head is not covered.
Dress layered, trapped air between loose fitting clothing helps to insulate.
Stay informed, have a portable NOAA weather radio nearby to keep you up-to-date with the latest forecasts and warnings. Use wind chill temperatures to guide you in dressing properly for the outdoors. On very cold days, minimize your exposure to the outdoors if possible.
Winter winds can not only make it miserable to be outside, they can also be dangerous.
As we often experience, high winds in Colorado can cause conditions to deteriorate rapidly. They present a very real danger to life and property, especially when coupled with other winter conditions like snow.
Why does it seem like we get so much wind in the winter? What causes this? How can you prepare and protect yourself and your property?
In this third in a series on winter weather preparedness from the National Weather Service, ThorntonWeather.com helps you understand why we receive so much wind and how to prepare for it.
PUBLIC INFORMATION STATEMENT
NATIONAL WEATHER SERVICE BOULDER CO
ISSUED BY NATIONAL WEATHER SERVICE PUEBLO CO
600 AM MDT WED OCT 19 2022
…WIDESPREAD HIGH WINDS VISIT COLORADO DURING THE WINTER…
This week through October 22nd is Winter Weather Preparedness Week in Colorado.
The two main causes of high winds in Colorado during the cold season are the air pressure difference between strong low pressure and cold high pressure systems, and Chinook winds developing across the Front Range and other eastern mountain ranges.
You have seen and heard the warnings but do you know what they really mean?
We all are familiar with the crawls on the TV screen or the announcements on the radio for winter weather advisories such as Winter Storm Watch, Blizzard Warning, Freeze Warning and more. But, how many of us really know what those mean? There is very specific criteria the National Weather Service follows in issuing these watches and warnings and there are important differences between all of them.
PUBLIC INFORMATION STATEMENT
NATIONAL WEATHER SERVICE BOULDER CO
600 AM TUE OCT 18 2022
From the National Weather Service:
What does that warning mean?
When a warning is issued during the winter season, will you know what it means, and will you know how to respond? During this Colorado Winter Weather Preparedness Week, please become familiar with our list of potentially life-saving winter weather products.
OUTLOOKS
A Hazardous Weather Outlook is issued daily by the National Weather Service office in Boulder Colorado. The outlook provides information on potentially hazardous weather out to 7 days into the future. Also, the Weather Story, a graphic of expected hazardous weather, is posted daily on National Weather Service web sites.
A Winter Storm Watch is issued when hazardous winter storm conditions are possible within the next 3 to 4 days, but the timing, intensity, or occurrence may still be uncertain. In contrast, a Winter Storm Warning is issued for potentially life-threatening winter storm conditions, such as heavy snowfall or a combination of snowfall and blowing snow, which are likely to occur within the next 1 to 2 days. Impacts such as timing of winter weather on rush hour are also considered when issuing Watches and Warnings.
Winter Storm
Plains: 6″ in 12 hours, 8″ in 24 hrs
Mountains: 8″ in 12 hours, 12″ in 24 hours
And Impacts
Winter Weather Advisory
Plains: 3-6″ in 12 hours, 4-8″ in 24 hours
Mountains: 4-8″ in 12 hours, 6-12″ in 24 hours
And Impacts
Blizzard
Sustained wind or frequent gusts 35 mph or greater, AND
Considerable falling/blowing snow with visibility less than 1/4 mile, for at least 3 hours
ADVISORIES
Advisories for winter weather are issued for potentially hazardous conditions which are considered more of a nuisance than a life-threatening situation. However, if caution is not taken the advisory events could become life-threatening. Impacts such as timing of winter weather on rush hour are also considered when issuing Advisories.
Winter Weather Preparedness Week in Colorado will continue through Saturday.
Today’s message from the NWS highlights the importance of having a proper emergency kit in your vehicle and should the worst-case scenario occur where you get stuck, what you should do to survive.
PUBLIC INFORMATION STATEMENT
NATIONAL WEATHER SERVICE GRAND JUNCTION CO
601 AM MDT MON OCT 17 2022
Winter Travel Safety
Winter Weather Preparedness Week continues through Saturday October 23rd. Preparedness is a big part of this campaign. Before winter weather arrives in earnest, it is highly recommended that you prepare your car or truck for winter travel. This includes a winter survival kit and good snow tires.
Before winter weather arrives in earnest, it is highly recommended that you prepare your car or truck for winter travel.
A well-equipped vehicle has adequate tires, tire chains, tow rope, sand or cat litter for traction, shovel, tool kit, windshield scraper and brush, battery cables, first aid kit, flashlight, extra batteries, blankets and/or sleeping bags, extra clothing, candles, waterproof matches, jug of water, high calorie packaged food for quick energy, and an empty can to melt snow for drinking.
And during winter weather events, the best way to prevent treacherous winter travel is to avoid it. This can be done by staying informed about current weather and road conditions as well as the latest weather forecasts. Information on road conditions in Colorado is available on the web at www.cotrip.org or from the toll free number 1-877-315-7623. When calling from anywhere in Colorado, dialing 511 will also access the Colorado road reports. Additionally, a free smartphone application, CDOT Mobile, is available.
If you should become stranded during a winter storm, stay with your vehicle and do not panic. If accompanied by others, take turns sleeping. Run the motor every hour for about ten minutes to maintain warmth, but keep windows open a little to prevent the buildup of carbon monoxide. Make sure the exhaust pipe is not blocked. Keep the car visible with brightly colored cloths tied to the side view mirrors, door handles, or external antenna. At night, turn on the dome light when running the engine. Exercise periodically by vigorously moving arms, legs, toes and fingers.
In the mountains, avalanches become a possibility in the winter, especially below steep slopes. Avalanches occasionally come down across roads, with little or no warning. However, avalanche control work is performed on many avalanche prone roads in Colorado, making the roads safer to travel. Caution is advised when traveling along avalanche prone roads, especially during and shortly after a heavy snowstorm, as well as during periods of rapid snowmelt.
Very strong downslope winds occur at times mainly along the front range of Colorado. These Chinook and Bora winds can have gusts exceeding 100 mph. Persons planning travel in lightweight or high-profile vehicles should avoid travel during these strong wind events especially on north-south oriented roads.
Roads which appear to be clear in the wintertime may actually be coated with a thin layer of ice, commonly known as black ice. This nearly invisible ice layer can cause you to rapidly lose control of your vehicle. Black ice is most common during the nighttime hours. If you detect black ice you should reduce your speed.
Please follow these winter travel safety recommendations which could save your life.
Don’t be caught off guard by winter weather! Remember the Christmas Eve Blizzard of 1982? Be prepared!
Winter weather in Colorado can be an inconvenience but more than that it can be deadly. Emergency preparedness for major winter storms – as well as for other types of severe weather – is an important part of living in a state where conditions can change wildly from one moment to the next.
To help raise awareness of the need to be prepared for these occasions, the week of October 16th to October 22nd has been proclaimed Winter Weather Preparedness Week in Colorado.
The National Weather Service will be issuing Public Information Statements each day this week to highlight the dangers of winter weather and how best to be prepared. ThorntonWeather.com will be posting these important messages here to help you be prepared. Please take the time to read and heed these messages – your life and the lives of your loved ones could depend on it.
Stay up to date with Thornton’s weather: ‘Like’ us on Facebook and follow us on Twitter.
From the National Weather Service:
PUBLIC INFORMATION STATEMENT
NATIONAL WEATHER SERVICE BOULDER CO
600 AM MDT SUN OCT 16 2022
..Winter Weather Preparedness Week in Colorado…
The week of October 16th through October 22nd is Winter Weather Preparedness Week in Colorado. This is an excellent time for all individuals, families, businesses, schools, and media outlets to review their winter storm preparedness plans. It is especially important for all new arrivals to the state to become familiar with the National Weather Service watch and warning definitions, as well as winter safety procedures.
Snow in Colorado is important to the farmers, the ski areas, and for filling up reservoirs. However, winter storms often bring heavy snow, bitter cold air, high winds, low visibilities and slick roads. This can lead to dangerous travel conditions and other life threatening situations such as avalanches and very frigid wind chill temperatures.
To help you prepare for these hazards this coming winter, the National Weather Service will issue statements throughout the week to discuss:
Supercell thunderstorms like this can be beautiful – but they can also be deadly. Do you know what to do when severe weather strikes? (Stormscape Photography / FLICKR)
Over the past week we have highlighted some of the severe weather hazards that we face in Colorado every spring and summer in our Severe Weather 101 series. The dangers these present are significant and not to be taken lightly.
Tornadoes grab most of the headlines and certainly are a danger however others like lightning and flooding are more common and actually claim more lives. We ask all of our readers to please, take the time to review these important articles – they could save yours and your family’s lives!
The National Weather Service has published a nice wrap up of Severe Weather Awareness Week that covers all the basics – see it below. For more in depth information, please use the links at the bottom to view each article on our Severe Weather 101 series. Be safe and be weatherwise!
PUBLIC INFORMATION STATEMENT
NATIONAL WEATHER SERVICE GRAND JUNCTION CO
600 AM MDT SAT APR 16 2022
SEVERE WEATHER AWARENESS WEEK IN REVIEW
Severe Weather Awareness Week in review…
Severe Weather Awareness Week in Colorado concludes today. During the past week we have presented information and safety rules for tornadoes, lightning and wildfires, floods and flash floods, straight-line thunderstorm winds, hail, and our warning programs.
We will now review some of the most important safety rules in our effort to build a Weather-Ready Nation.
Be weather-wise by staying informed on expected weather in your area. The National Weather Service is typically aware of the potential for severe weather many hours or even days before any severe weather watches or warnings are issued, providing forecast products to heighten your awareness. A Weather Story product is posted each day on National Weather Service Internet pages and Facebook pages which includes a map and text on possible hazardous weather expected within the next seven days.
A Hazardous Weather Outlook is also issued daily with information on possible hazardous weather through the next seven days. A watch is issued when conditions for severe weather or flooding become possible. A warning is then issued when life threatening conditions are imminent or occurring.
Tornadoes can even strike in mountain areas. In 2008 on August 23rd, this rope tornado struck Park County near Eleven Mile Reservoir. Image courtesy Jerry Bivens.
The best way to protect yourself from tornadoes is to have a plan of action. The safest place to be if a tornado approaches is in a basement or safe room within a well-built structure, or in an underground storm shelter. If none of these options are available, move to a hallway or a small interior room on the lowest floor, usually this is a closet or bathroom. Get under a heavy piece of furniture or in a bath tub and cover yourself with blankets. Remember, the greatest risk of injury from tornadoes is from flying debris.
Modular homes and mobile homes, even those tied down, offer little protection from tornadoes. If a tornado approaches, leave those locations and seek safety in a nearby sturdy building or storm shelter.
If you are driving in open country and see a tornado, if time permits, the best thing to do is simply drive away from the tornado path. Do not take shelter beneath a highway overpass. Wind speeds may actually be higher in these areas and often become collection points for debris.
If you are caught outside and cannot seek shelter inside a sturdy structure, crawl into a culvert or lie down in a narrow ditch or ravine and cover your head. But remember that the worst place to be when a tornado threatens is outside in the midst of flying debris.
Lightning usually kills and injures more people in Colorado than any other thunderstorm hazard. Lightning also causes many wildfires.
The best defense to protect yourself against a lightning strike is to plan ahead and avoid being caught where you might be vulnerable. Check weather forecasts prior to venturing out, especially if you are heading into the mountains. Plan outdoor activities early in the day before storms develop.
If thunderstorms threaten, seek shelter in a building or in an enclosed metal-roof vehicle, making sure all windows and doors are closed. Never seek shelter under an isolated tree. During thunderstorms, stay off corded telephones, away from electrical devices, and away from plumbing. Also get out of shower stalls, bath tubs, swimming pools and lakes when lightning is nearby.
You should wait at least 30 minutes after the last sound of thunder before resuming outdoor activities. When thunder roars…go indoors.
The Big Thompson Flood in 1976 claimed the lives of 144 Coloradoans and serves to remind us of the dangers of floods. (USGS)
When flooding or flash flooding is possible, you should remain alert and be ready to quickly evacuate to higher ground or climb to safety. Flash floods often occur suddenly and without warning. You need to follow some basic flood safety rules:
Do not camp or park your vehicle along streams and washes, particularly during threatening conditions.
If you are near a river, be aware of water levels and be prepared to move to higher ground if river levels rise.
Do not enter areas that are already flooded.
If walking or fishing along a river, be aware that erosion from swift running water can cause river banks to collapse.
Never let your children play around high water, storm drains, viaducts or arroyos.
At least half of all flash flood fatalities are vehicle related. While driving your automobile, look out for flooding at highway dips, bridges and low areas. Two feet of moving water will carry away most vehicles. Never attempt to drive across a flooded road. And be especially cautious at night when it is difficult to see flood dangers.
Straight-line winds from thunderstorms, including microbursts, can become quite strong, even reaching speeds in excess of 100 mph in extreme cases. When thunderstorms approach, high winds can suddenly develop, causing things on the ground to become swift moving airborne missiles with a potential force to injure or kill. As with any thunderstorm, seek shelter before the storm arrives.
This is one of the largest recorded hail stones which is more than 7 inches in diameter and fell in Nebraska in 2003. (NOAA)
Large hail can pose a danger to animals and people. Hail also produces considerable damage to crops and personal property each year in Colorado. Again, get indoors before thunderstorms arrive. A fall of small hail can suddenly change to a fall of very large ice missiles which can injure or kill. Make efforts to protect personal property before storms threaten.
When thunderstorms threaten, tune to NOAA All-Hazards Weather Radio, The Weather Channel, or your local radio or television stations. Also check the Internet web site from the National Weather Service office serving your area. And if you have a relatively new cell phone you should receive Tornado and Flash Flood Warnings on your phone if you are in the area of the warning.
During threatening weather days, plan the actions you will need to take so that you will be prepared if dangerous weather conditions actually develop.
NOAA’s National Weather Service wishes you a safe severe weather season.
Severe Weather Awareness Week in Colorado concludes today. During the past week we have presented information and safety rules for tornadoes, lightning and wildfires, floods and flash floods, straight-line thunderstorm winds, hail, and our warning programs.
This is a recap of a five part series on Colorado’s severe weather.
This is NOT the time to be outside. (michaeljames / FLICKR)
Of all the weather types associated with thunderstorms – hail, tornadoes, floods, etc – lightning is usually the most dangerous. In the United States there are an estimated 25 million cloud to ground lightning flashes each year and each one is a potential threat to life and property.
During the past 10 years there has been an annual average of 39 lightning fatalities in the United States. Last year, 23 people lost their lives due to lightning.
Colorado is ranked # 2 in lightning related deaths (2001 – 2010) so the danger this presents to life and property is very significant for us. It is interesting to note though that Colorado ranks only 32nd in the number of cloud to ground strikes over that same period. Which means, in short, we have fewer strikes than many other states and yet more deaths.
This highlights the fact that, quite frankly, folks here in Colorado are not aware of the dangers lightning presents and they do not take proper steps to protect themselves. One of the great things about Colorado are the outdoor activities we all enjoy, but there comes a time when we need to head indoors.
Straight line winds can be as damaging as a tornado. This image is from a park in Tennessee. (NWS)
During the spring and summer months in Colorado, a wide array of severe weather can strike. Tornadoes may grab all the headlines, but straight line winds and hail can do a great amount of damage in their own right – and they are more common.
Straight line winds are winds out of a thunderstorm and are classified as severe when they hit 58 mph. These winds can reach tornado and hurricane force and as a result, cause property damage and can injure and even kill animals and humans.
These winds are usually the result of air cooling rapidly due to precipitation or evaporation. As the cooler air is heavier than the surrounding warmer air, it rushes downward, accelerating toward the ground and spreads out as it hits, much like pancake batter being poured onto a griddle.
