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Feature Article: Why is Measuring Snow Important?

Measuring snowfall accurately is essential for meteorologists, weather enthusiasts, and storm spotters, for several reasons:

Weather Forecasting: Accurate snowfall measurements help meteorologists make precise weather forecasts. By understanding the amount of snow that has fallen in a city, they can better predict how weather patterns will evolve and provide more reliable information to the public.

Emergency Response Planning: Snowfall data plays a vital role in emergency response planning. Knowing the exact snow accumulation helps authorities prepare for potential disruptions caused by winter storms. It allows them to allocate resources efficiently, manage road conditions, and respond promptly to any emergencies.

Hydrological Models: Hydrologists use snowfall measurements to estimate the amount of liquid contained in the snowpack. As temperatures begin to warm during the spring months, rapid melting could lead to flooding. Accurate initial data collection is essential for hydrological models that predict water levels, although improved satellite data has reduced reliance on individual measurements.

Historical Records: Consistent and accurate snowfall measurements contribute to long-term weather records. These records are valuable for climate studies, trend analysis, and understanding changes in snow patterns over time.

In summary, measuring snowfall provides critical information for weather forecasts, emergency preparedness, and scientific research. It ensures the safety and well-being of communities during winter conditions. Use our guide below to learn how to accurately measure snowfall in your backyard, or at your place of business.

How to Measure Snowfall

To obtain an accurate measurement, it is important to follow a few simple guidelines.

Before the first snowfall, place a snowboard outside in a location away from trees, buildings, and shadows. A snowboard can be any lightly colored board that is approximately 2 feet by 2 feet. A piece of plywood painted white works well. One common mistake made while measuring snowfall is measuring drifted snow, which can result in higher measurements. Avoid areas prone to drifting and mark the location of the snowboard with a stake so it can be easily found after a fresh snowfall. If a snowboard is not available, a wooden deck or the ground can be used.

Snowfall should be measured to the nearest tenth of an inch on the snowboard or other collecting surface. Snowfall should not be measured more than four times in 24 hours. Hourly snowfall rates can be measured, but the board should not be cleaned off each hour. Only clean off the board when taking one of the four daily measurements. Once snowfall has concluded, sum the measurements from each time the snowboard was cleaned to reach a storm total. Four measurements a day are standard for National Weather Service reporting stations such as airports, but two measurements per day is sufficient. For example, measurements could be taken at 6am and 6pm.

There are several special cases to consider when measuring snowfall. If snow falls and accumulates on the snowboard, but then melts, the snowfall is the greatest depth of snow observed on the board before it begins to melt. If this occurs several times, measure the snowfall after each snow shower and add each measurement for the total snowfall. If snow falls and melts continuously on the board, and the snow never reaches a depth of a tenth of an inch, then a trace (often represented as “T”, or “TR”) of snowfall is recorded. If snow has blown or drifted onto the snowboard, take several measurements from around the yard where the snow has not drifted, being careful only to measure new snow. Take an average of the various measurements to arrive at a total. Sleet counts towards total snowfall, while freezing rain accumulation does not.

How to Measure Snowdepth

Measuring snow depth involves measuring the depth of snow on the ground, including both new and old snow. Snow depth is measured to the nearest inch. Sometimes old snow can be very hard and icy beneath new snow. Ensure that the ruler gets all the way down to the underlying ground. Measure the total snow depth at several locations in your yard that have not drifted or blown. Traditionally, ten measurements are made, and the average value is the snow depth.  

WEATHER ALARMS ARE HERE!

Skyview Weather is excited to announce the latest feature in the Skyview Weather app: Weather Alarms!

 

With this new feature, Skyview clientele will be able to create alarms that will automatically send a notification to their Skyview app when certain conditions at their location are met. The process will be simple:

Step 1: Create the alarm and select your desired location.
What creating a weather alarms looks like in the Skyview app

Step 2: Ensure that the alarm is on. As of now, the alarm must be manually enabled when created, but we are open to feedback on this step.
The toggle button for Weather Alarms

Step 3: Set your desired conditions for the alarm under the “+ADD RULE” button. This will open a menu where you can create thresholds for cloud cover, dew point, temperature, wind chill, wind gust speed, and wind speed.
The rules menu for Weather Alarms

Step 4: Save the alarm! Your alarm will now be active and will trigger when the conditions are met and send you a push notification in the Skyview Weather app.

Multiple rules can be created for each alarm! For example, if you are looking to receive a notification whenever the temperature is above 75 degrees and the winds are less than 5mph in Castle Rock, the Weather Alarms feature can do that! Simply add another rule to the alarm while creating it.

Single alarms can also be created for multiple locations! For example, if you are presiding over locations in Boulder, Longmont, and Fort Collins, and want to create an alarm to know when the temperature drops below 32° at each location, the alarm will send you separate notifications. If it’s 31° in Fort Collins but 36° in Longmont and 38° in Boulder, the alarm will only send a notification specific to Fort Collins.

We are extremely excited to roll out this new product for our Skyview clientele, and we hope you are too! If interested in adding this product to the app for your organization, please reach out to us for more information and we will get your organization set up with this new feature for a flat fee of $25/month, billed annually. We are also more than happy to answer all the questions you may have about the Weather Alarms feature.

Once set up, please do not hesitate to share feedback with us on this new feature so we can ensure full satisfaction with the Skyview Weather experience!


Colorado Drought Update

November 2024 Drought status in Colorado
November 2024 Drought status in Colorado

 

The early November major snowstorm provided significant drought relief across much of Colorado, especially the eastern plains, which had experienced varying levels of concerning drought prior to the storm. Thanks to that system and the next few lower impact storms that passed through during November relieved much of the western mountains of drought conditions, outside of the Yampa River basin in northwest Colorado. Unfavorable upslope conditions during the recent storms limited precipitation in the northern I-25 corridor, and the cities of Longmont and Fort Collins remain under extreme drought conditions.


December 2024 Temperature Anomaly Forecast

December CPC Temperature Outlook
December CPC Temperature Outlook

The Climate Prediction Center (CPC) has issued an outlook for December indicating that warm conditions are likely in store for Colorado this month. A strong ridge, currently in place, is set to remain relatively stationary over the western US until the arrival of our next storm system at the beginning of December’s second week, which would support above average temperatures. Long-range forecasting models support the CPC’s claims, indicating that a few storm systems during the middle of the month will be followed by generally warm weather during the holidays. Generally, warmer weather over the west allows for cooler air to be transported southeast from central Canada to the eastern US, which is why the CPC is anticipating a cool December for the northeastern US.

December 2024 Precipitation Anomaly Forecast

December CPC Precipitation Outlook
December CPC Precipitation Outlook

Southern California, also indicated to likely be much warmer than usual this December, looks to be the worst victim of the ridge discussed in the temperature outlook section, leading to a warm, dry month for the southern portion of the Colrado River Basin. Most of the country otherwise appears to be in for a relatively normal December for precipitation, with the exception of the slopes of the Montanan Rockies, and the lake effect snowfall-prone areas on the windward sides of the Great Lakes.

Weather Summary for Colorado, November 2024

Here’s the thing about the atmosphere: it’s always seeking to balance itself, like most things in nature. It’s in a constant state of “what goes up, must come back down.”  Unfortunately for Denver and much of the Colorado Front Range, what came back down after one of the hottest Octobers in recorded history was a monster snowfall, the likes of which many areas of Colorado had never seen since weather records began nearly 150 years ago. Especially in the month of November. The Sangre de Cristo mountains, Trinidad/Raton Mesa region, and parts of Elbert and Lincoln counties accrued 3-4 feet worth of snow over the course of November 5th-9th, with over a foot recorded for much of the I-25 corridor south of I-70. It was quite an impressive event, and snowpack on the eastern plains from that system would remain on the ground for the remainder of the month.

After that major storm, the remainder of the month remained relatively normal, with a few relatively inconsequential snowfalls along the I-25 corridor and mild weather that led to a temperature average just 1.2° below the climatological normal. In the week leading up to Thanksgiving, a potently moist storm system made its way across the Intermountain West and battered the Colorado mountains with multiple feet of snowfall at the highest elevations, but downsloping winds on the eastern side of the Continental Divide limited this event to a moderate snowfall along the I-25 corridor.

NWS graphic of the total snowfall during the early November major snowstorm
NWS graphic of the total snowfall during the early November major snowstorm

Weather Statistics for Denver International Airport (DIA), November 2024

DIA Temperature (°F), November 2024

TEMPERATURE (IN DEGREES F)OBSERVED VALUENORMAL VALUEDEPARTURE FROM NORMAL
AVERAGE MAX49.7°F52.9°F-3.2°F
AVERAGE MIN26.6°F26.0°F0.6°F
MONTHLY MEAN38.2°F39.4°F-1.2°F
DAYS WITH MAX 90 OR ABOVE00.00.0
DAYS WITH MAX 32 OR BELOW22.5-0.5
DAYS WITH MIN 32 OR BELOW2022.7-2.7
DAYS WITH MIN 0 OR BELOW00.5-0.5

DIA Liquid Precipitation (Inches), November 2024

PRECIPITATION (IN INCHES)    
MONTHLY TOTAL1.98”0.64”1.34”
YEARLY TOTAL14.08”14.13”-0.05”
GREATEST IN 24 HOURS0.85” on 11/8
DAYS WITH MEASURABLE PRECIP.12 4.67.4

2024 Snowfall Accumulation for the Colorado Eastern Plains

CityOctNovDecJanFebMarAprTotal
Aurora0.024.024.0
Boulder0.020.220.2
Brighton0.06.46.4
Broomfield0.017.517.5
Castle Rock0.229.529.7
Colorado Springs Airport0.021.621.6
Denver DIA0.023.323.3
Denver Downtown0.011.211.2
Golden0.636.036.6
Fort Collins0.21.61.8
Highlands Ranch0.024.424.4
Lakewood0.020.420.4
Littleton0.014.014.0
Monument2.036.038.0
Parker0.028.028.0
Sedalia – Hwy 670.024.524.5
Thornton0.016.016.0
Westminster0.010.010.0
Wheat Ridge0.014.514.5
Windsor04.54.5


December 2024 Preview

Heading into what is climatologically Denver’s coldest month, there aren’t many signals of significant weather events on the horizon. Most of the long-range forecast models are hinting at an active middle portion of the month, beginning with the month’s first snowstorm coming into town next Monday. Another system appears likely not long after, before a bit of a longer stretch of mild weather for the holidays and a potential for colder weather around New Year’s.

December is also typically Denver’s driest month, with the average of 0.35” coming in just drier than the January average of 0.38”. Based on all indications from global atmospheric patterns and long-range forecast models, there’s not much to indicate that this December will deviate much from that low total. Of course, if one of these mid-month systems taps into moisture from the Gulf of Mexico, we’ll see an increase from that monthly average, and the devil will be in the details until they pass.  

December Climatology for Denver

(Normal Period 1991-2020 Dia Data)

Temperature

AVERAGE HIGH44.0°F
AVERAGE LOW18.4°F
MONTHLY MEAN31.2°F
DAYS WITH HIGH 90 OR ABOVE0.0
DAYS WITH HIGH 32 OR BELOW6.4
DAYS WITH LOW 32 OR BELOW29.2
DAYS WITH LOWS ZERO OR BELOW1.9

Precipitation

MONTHLY MEAN0.35”
DAYS WITH MEASURABLE PRECIPITATION4.4
AVERAGE SNOWFALL IN INCHES6.6”
DAYS WITH 1.0 INCH OF SNOW OR MORE4.6

Miscellaneous Averages

HEATING DEGREE DAYS1047
COOLING DEGREE DAYS0
WIND SPEED (MPH)8.3 mph
WIND DIRECTIONWest
DAYS WITH THUNDERSTORMS0
DAYS WITH DENSE FOG1
PERCENT OF SUNSHINE POSSIBLE59%

Extremes

RECORD HIGH79°F on 12/05/1939
RECORD LOW-25°F on 12/22/1990, 12/24/1876 (Coldest DIA Temp)
WARMEST43.8°F in 1933
COLDEST17.4°F in 1983
WETTEST5.21” in 1913
DRIEST0.00” in 1881
SNOWIEST54.4” in 1913
LEAST SNOWYTR in 2002, 1906, 1905


The Skyview Weather Newsletter is a monthly publication that aims to provide readers with engaging and informative content about meteorological science. Each issue features articles thoughtfully composed by Skyview’s team of meteorologists, covering a wide range of topics from the birth of Doppler Radar to the impact of weather phenomena. The newsletter serves as a platform to share the latest advancements in weather forecasting technology and the science behind it, enhancing our understanding of weather.

Skyview Weather has been a pillar for reliable weather services for over 30 years, providing unparalleled forecasts and operations across the Continental US. We offer a comprehensive suite of services that range from live weather support to detailed forecasts, extensive weather data collection, and weather reporting. Our clients, ranging from concert venues to golf courses, theme parks to hotels, schools to police departments, and more, rely on Skyview Weather for winter and summer weather alerts, now available on the Skyview Weather mobile app. These alerts cover a broad spectrum of weather conditions, including snow, lightning, hail, tornadoes, severe weather, and heavy rain. Learn more about how Skyview Weather products and services can support your organization through severe, winter, flood, and fire weather.