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Warmer temperatures for Thornton’s Tuesday but readings will remain well below normal

Tuesday, March 5th, 2019 5:02am MDT

The chill continues to linger today with temperatures about 20 degrees below normal. That is, at least, a decent improvement over recent days.

Clear skies start us out but we will see a steady, slow increase in cloud cover as the day progresses. The coverage may inhibit the warming a bit.

As is, highs today right around the freezing mark are expected. The average high for today’s date is 51 degrees so while we will be warmer than yesterday, we are still much colder than normal.

Tonight, mostly cloudy skies will be above with lows dipping to the teens.

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Long Time Frame Flooding – Colorado Flood Safety and Wildfire Preparedness Week

Tuesday, March 5th, 2019 4:10am MDT

Floods and Flash FloodsFloods and wildfires are arguably the two most common disasters Coloradans face with numerous such events occurring each year.  To better prepare residents for the danger of these disasters, this week is Colorado Flood Safety and Wildfire Preparedness Week.

Each day this week the National Weather Service will be posting public information statements covering a number of different topics about floods and wildfires.  These important messages should be required reading for all Coloradans so they know what to do to prepare for these events and handle them when they occur.

ThorntonWeather.com will be posting each of these messages as a service to our readers.  Please check back daily for a new topic.

PUBLIC INFORMATION STATEMENT
NATIONAL WEATHER SERVICE PUEBLO CO
600 AM MDT TUESDAY MARCH 5 2019

Today’s topic during Colorado Flood Safety and Wildfire Preparedness Week is flooding which develops in the time frame of longer than 6 hours to several days.

Long duration floods in Colorado can result from snow melt…a combination of snow melt and heavy rain…or just heavy rain.

There have been some notable floods across the Centennial State…

In early June of 1921…a flood along the Arkansas River devastated the city of Pueblo. Estimates of drownings ranged from over 100 to over 300.

Around Memorial Day…1935…catastrophic flooding occurred on the Palmer Divide and the Colorado Springs area…causing millions of dollars of damage…and killing at least 18 people.

The mid-June 1965 flood was widespread across eastern Colorado…taking several lives…and causing over 500 million dollars of damage.

During late April and early May of 1999…after up to 14 inches of rain fell…a major flood occurred across southeast Colorado from Colorado Springs to La Junta.

In 2013, the historic rains and floods in September caused over 3 billion dollars of damage, and took 9 lives.

Just this last year during May, multiple days of heavy rain and snow caused flooding across many areas of eastern Colorado.

Floods in Colorado can result from rapid snow melt, ice jams, a combination of snow melt and heavy rain, or just heavy rain.

National Weather Service forecast offices in Colorado closely collaborate with regional river forecast centers that monitor the Colorado River…South Platte River…Arkansas River…and Rio Grande to come to a consensus on the likelihood of flooding along rivers and large creeks.

The National Weather Service will discuss flood potential in hydrologic outlooks…daily hazardous weather outlooks…and in graphical weather stories on National Weather Service forecast office web sites. Hydrologic statements may be issued for high flows that are within the banks of a river or large creek.

When flooding is possible on a river or large creek…a Flood Watch will be issued…meaning flooding is possible within the designated watch area.

When flooding is likely or occurring on a river or large creek…a Flood Warning will be issued…meaning flooding is expected or has been reported at designated river forecast points.

Flood Advisories may be issued for minor flooding on rivers and creeks.

An Areal Flood Warning may also be issued for flooding on a river or large creek in areas away from the designated river forecast points.

You can easily monitor potential flooding along rivers in Colorado and large creeks using the Advanced Hydrologic Prediction Service monitoring system. Information on this monitoring system can be obtained from this web site…

http://water.weather.gov/ahps

This monitoring system can be accessed on Colorado National Weather Service forecast office web sites from the left hand menu…by clicking…rivers and lakes under the hydrology banner.

At each river and large creek gauge…you can easily look at current and forecast water levels…flood categories…historic crests…and flood impacts. Probabilities of exceedance of certain water levels by week or over the long term are also available.

In general…there will be some time to prepare for river and large creek flooding…and emergency management in your area has plans in place to address flooding issues. Know these plans and how you should act accordingly when Flood Watches and Flood Warnings are in effect.

For more information on flood safety go to…

http://www.floodsafety.noaa.gov

Tom Magnuson
Warning Coordination Meteorologist
National Weather Service Pueblo

Colorado Flood Safety and Wildfire Preparedness Week

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Denver sets two cold weather record temperatures in two days

Monday, March 4th, 2019 5:12am MDT

Record Cold TemperaturesWe may have changed the calendar to March but it seems like we are receiving weather more common for January. The bone-chilling cold of recent weeks has continued and the Mile High City set two temperature records in as many days.

Yesterday, as measured at Denver International Airport, the Mile High City saw a high temperature of only 6 degrees. This easily broke the record for the coldest maximum (high) temperature for March 3rd. The previous record was 14 degrees set in 1978.

Thornton was slightly warmer yesterday with a high of 8 degrees.

Also of note, yesterday’s low temperature reading in Denver of -6 degrees, while not a record low for the date, was the coldest temperature reading in March since -7 degrees was recorded on March 2, 1960.

This morning, the mercury at DIA dropped to -5 degrees. That bested the record low temperature for March 4th of -3 degrees last set in 1978. Similarly, Thornton saw a low of -5 degrees.

Warmer weather is on its way but the warm up will be slow as the Arctic air and snow cover lingers. For what lies ahead, see the extended weather forecast here.

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The sun returns for Thornton’s Monday, warmth however does not

Monday, March 4th, 2019 5:01am MDT

The clouds and snow of the weekend will move out today and we will see a return of calm conditions and blue skies. Arctic air however will remain entrenched on the Front Range and temperatures will be well below normal.

We start out the day with mostly sunny skies and a few spots of patchy fog. A Wind Chilly Advisory remains in effect until 9:00am.

Mostly clear skies will be the rule through the balance of the day with light winds out of the east. Temperatures start out below zero and will warm, but only to the upper teens, perhaps the 20 degree mark.

Tonight, we will be in for another cold one. Partly cloudy skies will be above with lows dropping to near zero.

Keep an eye on the temperatures with our live weather gauges.

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Types of Floods – Colorado Flood Safety and Wildfire Preparedness Week

Monday, March 4th, 2019 3:20am MDT

Floods and Flash FloodsFloods and wildfires are arguably the two most common disasters Coloradans face with numerous such events occurring each year.  To better prepare residents for the danger of these disasters, this week is Colorado Flood Safety and Wildfire Preparedness Week.

Each day this week the National Weather Service will be posting public information statements covering a number of different topics about floods and wildfires.  These important messages should be required reading for all Coloradans so they know what to do to prepare for these events and handle them when they occur.

ThorntonWeather.com will be posting each of these messages as a service to our readers.  Check back each day for a new topic.

PUBLIC INFORMATION STATEMENT
NATIONAL WEATHER SERVICE BOULDER CO
600 AM MDT MON MARCH 4 2019

Flooding can be a major problem in Colorado as we experienced in September 2013. Heavy rain fell over a large area of the foothills south to the Pikes Peak Region, resulting in flash flooding. Much of the water that fell across northeast Colorado eventually ended up in the South Platte River, with major river flooding having occurred from Greeley to the state line.

River flooding can result from heavy rain during the summer and from rapid snow melt or thunderstorm rain combining with runoff from melting snow. Flash flooding refers to a dangerous sudden rise in water within an urban area, in a canyon, or along a creek or wash over normally dry land area. Flash floods result from heavy rainfall, sudden breaks in river ice jams, and dam or levee failures.

Flash floods can occur within a few minutes or hours, and can move at surprisingly high speeds, striking with little warning. Flash floods are quite destructive because of the force of the moving water, and the debris that accumulates in flood waters, such as trees and boulders, which can destroy roadways, bridges and buildings.

Another complication in Colorado is the serious flooding that can result when heavy rain falls on recently burned areas. Anyone living downstream from a recently burned area should be aware of the changed conditions, which result in much faster, turbulent, debris and ash clogged waters from the burned area.

The National Weather Service will discuss flood and flash flood potential in daily Hazardous Weather Outlooks and in the graphical weather story on National Weather Service websites. On days with a high threat for flooding, you may hear of a Flash Flood or Flood Watch, which means that flash flooding or flooding is possible within the watch area.

A Flood Warning means that flooding is imminent or has been reported along a river.

A Flash Flood Warning means that flash flooding has been reported or is imminent.

When a Flash Flood Warning is issued for your area, act quickly. If advised to evacuate, do so immediately. Go to higher ground or climb to safety before access is cut off by flood waters. Go Up, Not Out. Nearly half of all flash flood fatalities are vehicle related. Do not enter a flooded roadway, instead Turn Around…Don’t Drown. In rapidly rising waters, backing up away from water would be safer. One to two feet of water will carry away most vehicles, and you also cannot tell if the road is damaged beneath the water.

More information on flooding hazards can be found on the National Weather Service Flood Safety page here.

Colorado Flood Safety and Wildfire Preparedness Week continues through this Saturday.

Colorado Flood Safety and Wildfire Preparedness Week

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March 3 to March 9: This Week in Denver Weather History

Sunday, March 3rd, 2019 5:45am MDT
This week in Denver weather history

March 3 to March 9: This Week in Denver Weather History

The month of March sometimes brings with it some of our most interesting weather with a wide variety of conditions possible. Our look back at this week in Denver weather history showcases this fact as we see damaging, high wind events, monster snow storms, and even thunderstorms.

From the National Weather Service:

2-3

In 1901…strong northwest winds raked the city for 2 days. On the 2nd…winds were sustained to 55 mph with gusts to 62 mph. The Chinook winds warmed the temperature to a high of 72 degrees…a record maximum for the date. On the 3rd…winds were sustained to 61 mph with gusts as high as 65 mph. The high temperature was 59 degrees.

In 1964…heavy snowfall of 6.3 inches was measured at Stapleton International Airport. East winds gusted to only 20 mph behind a cold front.

In 1978…5.0 inches of snowfall were measured at Stapleton International Airport where northeast winds gusted to 24 mph on the 2nd. The passage of a cold Canadian front kept temperatures only in the teens and 20’s on the 2nd after a high temperature of 33 degrees shortly after midnight. The temperature…after a morning low of 3 degrees below zero…climbed to only 14 degrees on the 3rd…setting a record low maximum for the date.

2-4

In 1963…heavy wet snow was accompanied by strong gusty winds across metro Denver. Snowfall totaled 11.6 inches at Stapleton Airport where north winds gusting to 44 mph caused much blowing and drifting snow. Hazardous driving conditions resulted in many traffic accidents.

In 1976…snowfall totaled 8.0 inches at Stapleton International Airport where…on the 4th…northeast winds gusted to 31 mph reducing the visibility to as low as 1/4 mile. Maximum snow depth on the ground was 7 inches. Nine inches of snow were measured in Boulder.

3

In 1875…six inches of snow fell in Georgetown.

In 1895…northwest bora winds were sustained to 45 mph with gusts to 58 mph in the city.

In 1966…cold northwest wind gusts of 50 to 90 mph occurred across metro Denver. Both cars and trucks were blown off an icy highway just east of Denver where some highways were closed by either blowing dust or blowing snow. A northwest wind gust to 43 mph was recorded at Stapleton International Airport. The strong winds caused limited minor damage.

In 1972…winds gusted to 55 mph in Boulder causing no reported damage. West winds gusted to 49 mph at Stapleton International Airport.

In 1985…snow struck metro Denver. Heaviest hit was Boulder where 6 to 8 inches were measured. Icy roads caused the closure of I-25 north and south of Denver due to traffic accidents. The snow also caused long delays at Stapleton International Airport where snowfall totaled only 2.6 inches.

In 1997…west winds gusted to 52 mph at Denver International Airport.

3-4

In 1932…a dust storm occurred on the 3rd during the late afternoon. North winds gusting as high as 38 mph behind a cold front kicked up much blowing dust. Light snow developed during the evening and continued through the early morning of the 4th. Snowfall totaled 2.7 inches.

In 1934…strong winds raked Boulder. A wind gust to 62 mph was recorded at Valmont just east of Boulder. The strong winds caused hundreds of dollars of damage in Boulder.

In 1981…the most vigorous snow storm of the season struck the state…closing many schools and most highways connecting Denver…Colorado Springs…and Limon. North winds gusting to 43 mph whipped nearly 10 inches of snow in Denver into 3-foot drifts and snarled traffic on the morning of the 4th. Snowfall totaled 9.8 inches at Stapleton International Airport.

In 1989…a storm dumped 2 to 6 inches of snow across metro Denver. The snow caused 2-hour air traffic delays at Stapleton International Airport where 3.0 inches of snow fell and north winds gusted to 23 mph on the 3rd. There were many traffic accidents across metro Denver. I-70 was closed east of Denver for a time on the 3rd.

In 1991…high winds raked the eastern foothills. Wind gusts of 60 to 90 mph were common with 119 mph recorded at Wondervu southwest of Boulder…106 mph on Shanahan Ridge and 92 mph at Table Mesa…both in southwest Boulder. Several trees were uprooted and traffic signs and lights blown over. Flying debris caused damage to homes… Buildings…and cars.

In Boulder…a stop sign was blown onto a car. There were no reports of injuries. Southwest winds gusting as high as 48 mph briefly reduced the prevailing visibility to as low as 1/16th mile in blowing dust at Stapleton International Airport on the 4th.

3-5

In 1961…snowfall totaled 8.3 inches at Stapleton Airport over the 3-day period with most of the snow…4.4 inches… Falling on the 3rd. Winds were generally light gusting to only 23 mph.

4

In 1887…snowfall was only 0.1 inch. This was the earliest last measurable snow of the season.

In 1971…a wind gust to 102 mph was recorded at the National Center for Atmospheric Research in Boulder. A wind gust to 83 mph was measured at the National Bureau of Standards. In downtown Boulder…sustained winds reached 35 mph with gusts as high as 57 mph. No significant damage was reported. West winds gusted to only 28 mph at Stapleton International Airport.

In 1982…brief heavy snow accompanied by a few thunderstorms struck metro Denver. Lightning struck a house in Arvada setting it afire. The thunderstorm produced 5 inches of snowfall in a 2-hour period in Wheat Ridge. The snow made roads very icy and slick causing a 59-car pile-up on I-70 in north Denver. Snowfall with thunder totaled only 1.3 inches at Stapleton International Airport.

In 1997…a fast moving pacific storm produced heavy snow in the foothills. Snowfall at Conifer measured 9 inches. Only light snow fell elsewhere over metro Denver. Snowfall totaled only 1.2 inches at the site of the former Stapleton International Airport. North northeast winds gusted to 28 mph at Denver International Airport.

4-5

In 1971…heavy post-frontal snowfall totaled 7.7 inches at Stapleton International Airport where north winds gusted to 28 mph.

In 1992…snow spread from the mountains into the eastern foothills where 19 inches fell in Coal Creek Canyon. Rain fell over lower elevations of metro Denver with 1.12 inches of precipitation recorded at Stapleton International Airport and only one half inch of snow. North winds gusted to 32 mph.

In 2004…snowfall totaled 1.8 inches at the Denver Stapleton site. This was the only measurable snowfall of the month. Northeast winds gusted to 29 mph at Denver International Airport.

» Click here to read the rest of March 3 to March 9: This Week in Denver Weather History

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Thornton’s March weather preview: While things warm up, significant snow remains a possibility

Sunday, March 3rd, 2019 1:11am MDT

The month of March in Denver is usually one that is welcomed heartily by residents. We begin to shake off the cold of winter with warmer temperatures and calmer conditions. That does not mean we are done with snow and cold by any means.

March usually offers healthy snowfall giving us an opportunity to add to our seasonal totals.  While there is good snow potential in March, the month also typically brings much warmer temperatures.

March is historically Denver’s snowiest month and brings about 20% of our annual snowfall.  Heavy, wet spring snow storms can oftentimes bring the entire month’s snowfall total in one monstrous snow.

We also start the transition to spring and severe weather season and the month typically brings our first thunderstorms of the year.  Temperatures climb throughout the month and by the end our average daytime highs are near 60 degrees.

For a complete look at what lies ahead in March 2018, click here.

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Colorado Flood Safety and Wildfire Preparedness Week begins

Sunday, March 3rd, 2019 12:01am MDT
Colorado Flood Safety and Wildfire Preparedness

Colorado Flood Safety and Wildfire Preparedness Week, March 3 – 9, 2019.

Floods and wildfires are arguably the two most common disasters Coloradans face with numerous such events occurring each year.  To better prepare residents for the danger of these disasters, this week is Colorado Flood Safety and Wildfire Preparedness Week.

Each day this week the National Weather Service will be posting public information statements covering a number of different topics about floods and wildfires.  These important messages should be required reading for all Coloradans so they know what to do to prepare for these events and handle them when they occur.

ThorntonWeather.com will be posting each of these messages as a service to our readers.  The first of these messages is below.  Check back each day this week for further topics.

PUBLIC INFORMATION STATEMENT
NATIONAL WEATHER SERVICE BOULDER CO
600 AM MDT SUN MARCH 3 2019

Flood and wildfire season is approaching…know your risks…make your plans…improve your outcome…

The National Weather Service wants everyone in the United States to be part of a Weather-Ready Nation. Colorado has more than its fair share of floods, flash floods, and wildfires. You should be weather alert and weather-ready, knowing how to stay safe when floods and wildfires affect your area.

Now is the time to learn about flood and wildfire risks in Colorado, and to develop your plans to improve your outcome.

Flood-prone areas have been identified in over 250 cities and towns and in all 64 counties in Colorado. Over 250 thousand people live in floodplains in Colorado. There are estimated to be 65 thousand homes and 15 thousand commercial, industrial, and business structures in identified floodplains. There are likely many more structures located within unmapped flood hazard areas. The value of the property, structures, and contents located in the identified floodplains is estimated to be around 15 billion dollars.

Floods and flash floods have killed over 400 people in Colorado since the turn of the 20th century. The historic weather pattern of September 2013 reminds us all that floods are a major concern across the Centennial state. Floods have caused billions of dollars of damage in Colorado.

On average, 2500 wildfires occur across Colorado each year. Since 2012, 8 people have been killed when wildfires occurred in the wildland-urban interface.

 

The National Weather Service forecast offices which serve Colorado will issue a series of public information statements during this Flood Safety and Wildfire Preparedness Week…covering the following topics…

Sunday…Introduction to the week
Monday…Flood watches and warnings
Tuesday…River floods
Wednesday…Flash floods
Thursday…Fire forecasts…watches…and warnings
Friday…Wildfire safety and mitigation
Saturday…Review of the week

More information on floods and wildfires is available at your local National
Weather Service web sites…

http://www.weather.gov/denver NWS Dnver/Boulder web site
http://www.weather.gov/pueblo NWS Pueblo web site
http://www.weather.gov/goodland NWS Goodland web site
http://www.weather.gov/gjt NWS Grand Junction web site

Colorado Flood Safety and Wildfire Preparedness Week

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February 2019 weather recap: Thornton experiences a very cold, somewhat snowy month

Friday, March 1st, 2019 3:41pm MDT

Cold and snow. Those were certainly the operative words for the month of February 19. Thornton recorded its coldest February in the past 12 years and its snowiest month overall since March 2016.

Mild temperatures started things off for the first four days of the month and fooled us into thinking of an early spring. Those dreams were soon crushed though as the first extended period of below normal temperatures arrived on the 6th. Six straight days of below normal temperatures then arrived as did our first shot of snow for the month.

We rebounded briefly for a four day period from the 12th to the 15th with mild temperatures. Once again though, the mercury plunged delivering 13 straight days of below normal temperatures and five days of measurable snowfall.

Thornton recorded an average temperature for the month of 26.3 degrees. This was our coldest February since ThorntonWeather.com came online in 2007 – by more than two degrees. Out at Denver International Airport where the Mile High City’s official readings are taken it was slightly warmer with an average of 28.0 degrees.  Both were well below Denver’s long term February average of 32.5 degrees for February.

While certainly cold, neither average reading for the month could crack Denver’s list of top 10 coldest Februarys.

Thornton saw its warmest mercury reading for the month of 62.3 degrees on the second. Its coldest reading of -7.7 degrees came on the 7th of the month. Denver saw a maximum of 65 degrees on the 3rd and its low of -11 degrees on the 7th.

February is usually a dry month with Denver averaging 0.37 inches of liquid precipitation. Thornton recorded 0.60 inches this year while Denver saw 0.72 inches.

Similarly, snow was a good bit above normal for February as well. Thornton saw 11.2 inches of the white stuff while out at the airport 13.4 inches was recorded.

Click here to view Thornton’s January 2019 climate report.

Thornton, Colorado's temperature summary for February 2019. (ThorntonWeather.com)

Thornton, Colorado’s temperature summary for February 2019. (ThorntonWeather.com)

Thornton, Colorado's precipitation summary for February 2019. (ThorntonWeather.com)

Thornton, Colorado’s precipitation summary for February 2019. (ThorntonWeather.com)

CLIMATE REPORT
NATIONAL WEATHER SERVICE DENVER/BOULDER CO
555 AM MST FRI MAR 1 2019

...................................

...THE DENVER CO CLIMATE SUMMARY FOR THE MONTH OF FEBRUARY 2019...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1872 TO 2019

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE  DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH              80   02/10/2017
 LOW              -25   02/01/1951
                        02/08/1936
HIGHEST            65   02/03
LOWEST            -11   02/07
AVG. MAXIMUM     40.8              46.2    -5.4     44.4
AVG. MINIMUM     15.3              18.9    -3.6     15.4
MEAN             28.0              32.5    -4.5     29.9
DAYS MAX >= 90      0               0.0     0.0        0
DAYS MAX <= 32      8               3.9     4.1        6
DAYS MIN <= 32     26              26.9    -0.9       26
DAYS MIN <= 0       3               1.3     1.7        3

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         2.01   1934
 MINIMUM         0.01   1970
TOTALS           0.72              0.37    0.35     0.31
DAILY AVG.       0.03              0.01    0.02     0.01
DAYS >= .01         6               5.3     0.7        5
DAYS >= .10         3               0.7     2.3        2
DAYS >= .50         0               0.0     0.0        0
DAYS >= 1.00        0               0.0     0.0        0
GREATEST
 24 HR. TOTAL    0.41   02/22

             OBSERVED            NORMAL   DEPART   LAST YEAR`S
SNOWFALL (INCHES)
TOTAL            13.4               5.7      7.7     6.2
RECORD FEB       22.4   2015
SEASON TOTAL     27.8              35.2

DEGREE_DAYS
HEATING TOTAL    1029               908     121      975
 SINCE 7/1       4417              4439     -22     4057
COOLING TOTAL       0                 0       0        0
 SINCE 1/1          0                 0       0        0

FREEZE DATES
RECORD
 EARLIEST     09/08/1962
 LATEST       06/08/2007
EARLIEST                        10/07
LATEST                          05/05
.................................................................

WIND (MPH)
AVERAGE WIND SPEED              9.5
RESULTANT WIND SPEED/DIRECTION   1/176
HIGHEST WIND SPEED/DIRECTION    35/060    DATE  02/14
HIGHEST GUST SPEED/DIRECTION    42/070    DATE  02/14

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.60
NUMBER OF DAYS FAIR            3
NUMBER OF DAYS PC             20
NUMBER OF DAYS CLOUDY          5

AVERAGE RH (PERCENT)     66

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDER        0   FREEZING RAIN    0      LIGHT SNOW    14
MIXED PRECIP   0   LGT FR RAIN      0      ICE PELLETS    0
HEAVY RAIN     0   HAIL             0      FOG           17
RAIN           0   HEAVY SNOW       2      HEAVY FOG     11
LIGHT RAIN     0   MODERATE SNOW    3      HAZE           8

-  INDICATES NEGATIVE NUMBERS.
R  INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T  INDICATES TRACE AMOUNT.
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March comes in like a lion with a winter storm set to impact first weekend of the month

Friday, March 1st, 2019 5:01am MDT

After all the cold of last month, it was nice to warm up some yesterday and today will be seasonal. However, Mother Nature is set to deliver a reminder this weekend that winter is not over.

For today, mostly sunny skies start things off but cloud cover will be increasing as a cold front moves in. High temperatures today will be right near 50 degrees at about noon then begin descending. This evening and overnight we may see some light snow but with only minimal accumulations, if any.

Saturday is when things look to get interesting as a more powerful system sets up. Mostly cloudy to cloudy skies will be above with high temperatures only around 30 degrees. We’ll see some light, accumulating snow during the daytime hours.

Saturday evening, snow intensity and coverage should increase and be persistent overnight. Thornton could see 3 to 5 inches by sunrise Sunday morning.

Sunday, things will settle down but with some light snow possible through the day. It will be very cold with highs only in the teens.

A Winter Storm Watch has been issued and is in effect from 9:00am Saturday to 5:00am Sunday. The service warns of 4 to 8 inches snow during that period but the heaviest amounts should be to our west and south. Certainly travel is likely to be impacted. Read the complete watch here.

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