Category Archives: Thornton Weather

March 2014 weather recap: Month saw near normal temperatures and precip, below normal snowfall.

Looking back at the month of March we see a period of relatively uneventful weather in the Denver area.  Temperatures were near normal as was the amount of liquid precipitation, this despite the fact we saw well below normal snowfall.

The month started very cold with the first two days failing to record readings above freezing and some light snowfall.  That did not last long however and four mild days followed.  A weak system then moved in with a couple more shots of snow over a three day period.

Entering the second week of the month temperatures moderated and we saw some of our warmest readings of the month.  Light snow on the 12th fell but did not cool things down too much.

Two more very light snowfalls occurred in the last 10 days of the month while temperatures overall remained at or above normal.

Thornton’s average temperature for the month came in at 41.1 degrees, 0.7 degrees above the Denver average for March of 40.4 degrees.  Out at Denver International Airport, the Mile High City saw an average monthly temperature of 40.9 degrees.

Our warmest temperature for the month occurred on the 9th when the mercury climbed to 75.0 degrees.  The coldest reading of 3.8 degrees happened on March 2.  Denver’s warmest and coldest temperatures were on the same days with readings of 73 degrees and 4 degrees.

Two days, the first and the second, saw high temperatures below freezing.  Low temperatures below freezing occurred on 22 of the 31 days.  Denver saw similar readings.

In terms of liquid precipitation, Thornton recorded 1.06 inches.  This was a bit above Denver’s March average of 0.92 inches.  Denver was drier than normal recording 0.83 inches.

The near normal precipitation came despite the fact we saw much less snow than normal.  March is typically our snowiest with an average of 10.7 inches of the white stuff.  Thornton saw a mere 6.5 inches and Denver 6.0 inches.

Click here to view Thornton’s March 2014 climate report.

March 2014 temperature summary for Thornton, Colorado. (ThorntonWeather.com)
March 2014 temperature summary for Thornton, Colorado. (ThorntonWeather.com)
March 2014 precipitation summary for Thornton, Colorado. (ThorntonWeather.com)
March 2014 precipitation summary for Thornton, Colorado. (ThorntonWeather.com)

 

CLIMATE REPORT...CORRECTED
NATIONAL WEATHER SERVICE BOULDER, CO
725 PM MDT TUE APR 1 2014

..............CORRECTED FOR TYPOS FOR THE FOLLOWING.................
.....TEMPERATURES...SNOWFALL DEPARTURES AND PEAK WIND DIRECTION.....

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

...THE DENVER CO CLIMATE SUMMARY FOR THE MONTH OF MARCH 2014...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1872 TO 2014

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE  DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH              84   03/26/1971
 LOW              -11   03/28/1886
HIGHEST            73   03/09        84     -11       76  03/15
LOWEST              4   03/02       -11      15        2  03/25
AVG. MAXIMUM     55.8              54.4     1.4     50.7
AVG. MINIMUM     25.9              26.4    -0.5     24.6
MEAN             40.9              40.4     0.5     37.7
DAYS MAX >= 90      0               0.0     0.0        0
DAYS MAX <= 32      2               1.9     0.1        3
DAYS MIN <= 32     23              23.6    -0.6       24
DAYS MIN <= 0       0               0.1    -0.1        0 
PRECIPITATION (INCHES) 
RECORD
  MAXIMUM         4.56   1983
  MINIMUM         0.03   2012 
TOTALS           0.83              0.92   -0.09     1.47 
DAILY AVG.       0.03              0.03    0.00     0.05 
DAYS >= .01         9               5.9     3.1        6
DAYS >= .10         2               2.4    -0.4        4
DAYS >= .50         0               0.3    -0.3        0
DAYS >= 1.00        0               0.1    -0.1        0
GREATEST
 24 HR. TOTAL    0.32   03/07 TO 03/07           03/22 TO 03/22
                                                          03/22 TO 03/22
                                                          03/22 TO 03/22
 STORM TOTAL       MM                                 MM
 (MM/DD(HH))            MM                    03/22(00) TO 03/22(00)
                                                 03/22(00) TO 03/22(00)2
                                                 03/22(00) TO 03/22(00)2

SNOWFALL (INCHES)
RECORDS
 TOTAL             MM   5
TOTALS            6.0              10.7

DEGREE_DAYS
HEATING TOTAL     739               763     -24      840
 SINCE 7/1       5258              5202      56     5112
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              11.5
RESULTANT WIND SPEED/DIRECTION   3/247
HIGHEST WIND SPEED/DIRECTION    45/350    DATE  03/18
HIGHEST GUST SPEED/DIRECTION    55/350    DATE  03/18

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.60
NUMBER OF DAYS FAIR            6
NUMBER OF DAYS PC             18
NUMBER OF DAYS CLOUDY          7

AVERAGE RH (PERCENT)     50

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                0     RAIN                       2
LIGHT RAIN                3     FREEZING RAIN              0
LT FREEZING RAIN          1     HAIL                       0
HEAVY SNOW                0     SNOW                       6
LIGHT SNOW               10     SLEET                      0
FOG                      12     FOG W/VIS <= 1/4 MILE      5
HAZE                      5

-  INDICATES NEGATIVE NUMBERS.
R  INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T  INDICATES TRACE AMOUNT.

March 2014 top shots: Monthly photo slideshow

Wintry weather started the month of March in northeastern Colorado. View more images from the month in the slideshow below.   (Marla Winter)
Wintry weather started the month of March in northeastern Colorado. View more images from the month in the slideshow below. (Marla Winter)

March along the Colorado Front Range can be a very pleasant time as temperatures climb with the approach to and arrival of spring.  However the month is also Denver’s snowiest and wintry weather is not unusual.  This variety of conditions will be reflected in our March 2014 slideshow below.

  • Slideshow updated March 31, 2014

Showcasing images captured by ThorntonWeather.com readers as well as some of our own, our monthly slideshow covers the entire gamut of weather-related imagery.  Sunsets, sunrises, wildlife and of course snow are vividly depicted.

Throughout the month we will gather the images sent to us via email or shared with us via our various social media outlets and post them in the slideshow below.

To learn more about getting your photos added to our monthly slideshow, click here. 

Click the play button below and sit back and enjoy the images.

Spring forward: Daylight Saving Time begins this weekend

The United States begins Daylight Savings Time at 2:00am on Sunday, March 10, 2013.
The United States begins Daylight Savings Time at 2:00am on Sunday, March 10, 2013.

The biannual ritual of changing our clocks to adjust for Daylight Savings Time occurs this Saturday night providing yet another signal of the changing of seasons.

The United States will ‘spring forward’ one hour at 2:00am Sunday morning, March 9, as we begin Daylight Savings Time.

The ritual of changing our clocks twice a year can be met with some resistance as some people struggle to adjust their body’s internal clock.  The start of Daylight Savings Time can be particularly problematic given the one hour less sleep people receive on the night of the change.

However, longer days as we head into the milder months are a very real benefit and for many worth the inconvenience of a lost hour of sleep.  The time change definitely has big effects on how much daylight we enjoy during our normal waking hours.

On Saturday, prior to the change, sunset will occur at 6:00pm but on Sunday the sun won’t disappear over the horizon until 7:01pm.  This affords folks more time in the evening to get started on those spring-time chores and allows us to get outside and enjoy the warming weather.

The spring equinox is also on the horizon.  Spring officially begins at 10:57am on March 20.

This year Daylight Savings Time will come to an end on November 2.

Some of the recent history of Daylight Savings Time (from Wikipedia):

Daylight saving time in the United States was first observed in 1918. Most areas of the United States currently observe daylight saving time, with the exceptions being the states of Arizona and Hawaii along with the territories of Puerto Rico, American Samoa, Guam, and the Northern Mariana Islands.

From 1987 to 2006, daylight saving time in the United States began on the first Sunday of April and ended on the last Sunday of October. The time was adjusted at 2:00 AM (0200) local time (as it still is done now).

Since 2007, daylight saving time starts on the second Sunday of March and ends on the first Sunday of November, with all time changes taking place at 2:00 AM (0200) local time. In 2011, daylight saving time began on March 13 and will end on November 6.

Daylight Saving Time Schedule

Year DST Begins 2 a.m.
(Second Sunday in March)
DST Ends 2 a.m.
(First Sunday in November)
2014 9 March 2014 2 November 2014
2015 8 March 2015 1 November 2015
2016 13 March 2016 6 November 2016
2017 12 March 2017 5 November 2017
2018 11 March 2018 4 November 2018
2019 10 March 2019 3 November 2019

Videos: Time lapse of Thornton’s quick, wet snow coming and going

Late winter in Colorado can bring a wide variety of conditions, oftentimes within a very short time span. This was fully evident yesterday and last night as we went from a high of a daytime 62 degrees to receiving a healthy dose of snow before midnight.

Thornton received a total of 2.9 inches of heavy, wet snow from about 9:00 p.m. on March 4 through 1:00 a.m. on March 5.  A healthy 0.45 inches liquid precipitation was recorded from the snow.

The time lapse video below captures the event from its start through sunrise. Below that is a satellite imagery time lapse from 7:00 a.m. to noon to show just how fast that snow disappeared.

February 2014 weather recap: Much colder than normal but drier

Like all months in Colorado, February 2014 did have some warm periods but those were few and far between as compared to the cold we experienced.  Those cold temperatures did not translate to precipitation however.

The month started out quite cold with 9 out of the first 10 days seeing below normal temperatures.  Two of those days saw ‘high’ temperatures only in the single digits.  Seven of those 10 days stayed below freezing and four saw low temperatures below zero.

Warmer weather courtesy of downslope flow did finally arrive and most of the rest of the month was warmer than average.  Of the last 18 days of the month, only two had below normal temperatures.

Overall Thornton’s monthly average temperature for February 2014 was 28.5 degrees.  This was four degrees below Denver’s February average of 32.5 degrees.  Officially Denver’s average for the month was close to ours at 28.2 degrees.

While clearly a cold month, February 2014 failed to reach ‘top 10 coldest February’ status.  Number 10 on that list is February 1905 with an average temperature of 25.2 degrees.  The coldest February was in 1899 with an average of 17.6 degrees.

Temperatures ranged from a high of 68.3 degrees on the 16th down to a low of -12.6 degrees on the morning of the 5th.  Out at the airport, Denver saw its highest temperature of 68 degrees and its lowest of -19 degrees on the same dates.

Denver record low maximum temperatures on the 5th and 6th.  High temperatures on those days were minus 1 degree and plus 1 degree respectively.

Thornton recorded a mere 0.17 inches of precipitation in the rain bucket during the month.  Denver officially saw 0.19 inches.  Both fall well short of the February average of 0.37 inches.  While dry, it wasn’t dry enough to be one of the top 10 driest Februarys.

In terms of snowfall, Thornton measured 4.7 inches.  Denver lagged with only 3.3 inches.  Again, both were a good ways below the historical Denver average of 5.7 inches.

Click here to view Thornton’s February 2014 climate report.

Thornton, Colorado February 2014 temperature summary. (ThorntonWeather.com)Add a Caption Thornton, Colorado February 2014 temperature summary. (ThorntonWeather.com)
Thornton, Colorado February 2014 temperature summary. (ThorntonWeather.com)Add a Caption Thornton, Colorado February 2014 temperature summary. (ThorntonWeather.com)
Thornton, Colorado February 2014 precipitation summary. (ThorntonWeather.com)
Thornton, Colorado February 2014 precipitation summary. (ThorntonWeather.com)
CLIMATE REPORT
NATIONAL WEATHER SERVICE BOULDER, CO
628 AM MST SAT MAR 1 2014

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

...THE DENVER CO CLIMATE SUMMARY FOR THE MONTH OF FEBRUARY 2014... 

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1872 TO 2014

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE  DATE(S)
                                          NORMAL
................................................................ 
TEMPERATURE (F)
RECORD
 HIGH              77   02/28/2006
                        02/04/1890
 LOW              -25   02/01/1951
                        02/08/1936
HIGHEST            68   02/16        77      -9       63  02/17
LOWEST            -19   02/05       -25       6        5  02/22
AVG. MAXIMUM     42.3              46.2    -3.9     43.3
AVG. MINIMUM     14.1              18.9    -4.8     16.9
MEAN             28.2              32.5    -4.3     30.1
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       28
DAYS MIN <= 0       5               1.3     3.7        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         2.01   1934
 MINIMUM         0.01   1970
TOTALS           0.19              0.37   -0.18     0.77
DAILY AVG.       0.01              0.01    0.00     0.03
DAYS >= .01         4               5.3    -1.3        6
DAYS >= .10         1               0.7     0.3        4
DAYS >= .50         0               0.0     0.0        0
DAYS >= 1.00        0               0.0     0.0        0
GREATEST
 24 HR. TOTAL    0.12   02/04 TO 02/04              0.43
                                                 02/24 TO 02/24
 STORM TOTAL      2.3                                9.1
 (MM/DD(HH))            02/04 TO 02/04           02/24 TO 02/24

 SNOWFALL (INCHES)
RECORDS
 TOTAL           22.1   02-1912
 TOTAL            3.3   02-2014     5.7 1980-2010

DEGREE_DAYS
HEATING TOTAL    1022               908     114      972
 SINCE 7/1       4519              4439      80     4272
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              10.5
RESULTANT WIND SPEED/DIRECTION   2/270
HIGHEST WIND SPEED/DIRECTION    48/270    DATE  02/16
HIGHEST GUST SPEED/DIRECTION    59/270    DATE  02/16

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.60
NUMBER OF DAYS FAIR            2
NUMBER OF DAYS PC             18
NUMBER OF DAYS CLOUDY          8

AVERAGE RH (PERCENT)     63

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                0     RAIN                       0
LIGHT RAIN                1     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       1
LIGHT SNOW               10     SLEET                      0
FOG                      19     FOG W/VIS <= 1/4 MILE      8
HAZE                     12

-  INDICATES NEGATIVE NUMBERS.
R  INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T  INDICATES TRACE AMOUNT.

February 2014 top shots: Monthly photo slideshow

February started with a shot of snow in Thornton. (Jason McNeil)
February started with a shot of snow in Thornton. (Jason McNeil)

The month of February is one that begins a transition to warmer temperatures and oftentimes lacks snowfall.  Nevertheless, Mother Nature oftentimes offers stunning scenes to be captured in imagery as we see in our February 2014 slideshow.

  • Slideshow updated February 28, 2014

Showcasing images captured by ThorntonWeather.com readers as well as some of our own, our monthly slideshow covers the entire gamut of weather-related imagery.  Sunsets, sunrises, wildlife and of course snow are vividly depicted.

Throughout the month we will gather the images sent to us via email or shared with us via our various social media outlets and post them in the slideshow below.

To learn more about getting your photos added to our monthly slideshow, click here. 

Click the play button below and sit back and enjoy the images.

Photo: Bald eagle and afternoon iridescent clouds

One of our friends was hanging out along the South Platte again this afternoon.  Had to shoot pictures into the sun but with the iridescent clouds in the background it looks really cool.

Cloud iridescence is caused by clouds (usually cirrus) that have small water droplets or ice crystals in them causing the light to be diffracted, or spread out. The phenomena is much like the rainbow colors seen with oil in water.

Remember we are always looking for pics of just about anything to add to our monthly slideshow.  Be sure to email or post them so we can add them. Check out this month’s slideshow here.

A bald eagles rests in a tree along the South Platte River. (ThorntonWeather.com)
A bald eagles rests in a tree along the South Platte River. (ThorntonWeather.com)

Denver sets record coldest high temperature for February 6

Record Cold TemperaturesThe big chill continued on Thursday as for the second day in a row the Mile High City’s high temperature set a record as the coldest for the date.

As officially measured at DIA, Denver’s high temperature today was 1 degree.  That easily bested the previous record low maximum for February 6 of 5 degrees set in 1929 and years prior.

The mark was an improvement, albeit a slight one, over yesterday’s high of 1 degree below zero which also set a record.

Here in Thornton we fared slightly better with our high temperature topping out at 4 degrees today and 1.9 degrees on Wednesday.

Warmer weather is on the way as the cold Arctic air mass is expected to be pushed out tomorrow.  Temperatures on Friday should climb above freezing for the first time in eight days.

Photos: Sunrise sun dog appears in Denver

If you happened to look to the east at about 7:45 a.m. this morning you were treated to something pretty cool – a sun dog.

A sun dog is also called a ‘mock sun’, ‘phantom sun’ or ‘parhelia.’ These appear as bright spots to either side of the sun at the same distance above the horizon. They are caused by sunlight refracting through hexagonal ice crystals, usually in cirrus clouds. As the light hits the crystals, it is bent 22 degrees before reaching your eyes, thus creating the phenomena.

We took these images in north Denver.

February 5, 2014 - The full, bright sun dog. (ThorntonWeather.com)
February 5, 2014 – The full, bright sun dog. (ThorntonWeather.com)
February 5, 2014 - The north 'mock sun.' (ThorntonWeather.com)
February 5, 2014 – The north ‘mock sun.’ (ThorntonWeather.com)
February 5, 2014 - The south 'mock sun.' (ThorntonWeather.com)
February 5, 2014 – The south ‘mock sun.’ (ThorntonWeather.com)

January 2014 weather recap: Near average temps but well above normal snowfall

January 2014 could be remembered as a month that brought a weather rollercoaster.  Looking back it seems as if we were constantly jumping between mild temperatures to cold to warmth and back to cold again.

The month started out cooler than normal for the first two days with a light shot of snow on New Year’s Day.  Temperatures then shot into the 60s on the 3rd but were followed by colder temperatures and more snow on the 4th.  On the 5th we registered our coldest day of the month.

From the 7th to the 16th we experienced relatively calm conditions and only very light snow on one day.  We saw above normal temperatures from the 15th to the 21st.  Two cold days followed with snow falling on the 23rd.

Alternating above-normal and below-normal temperatures closed out the month.  Four of the last five days saw snowfall.

Thornton recorded an average monthly temperature of 31.3 degrees.  This was slightly higher than Denver’s official recording of 31.2 degrees.  Both were slightly above the historical average January temperature of 30.7 degrees.

Temperatures in Thornton ranged from a high of 67.0 degrees on the 19th down to a low of -5.5 degrees on the 6th.  Denver’s warmest temperature of 65 degrees also occurred on the 19th and it recorded its coldest of -10 degrees on the 5th.

All 31 days of the month saw low temperatures below freezing in Thornton and four days saw high temperatures fail to reach 32 degrees.  Two days saw readings below zero.  Denver’s readings were similar with four days staying below freezing and three seeing lows below zero.

Precipitation for the month was nearly double of the Denver historical average thanks to snowfall that was about double of normal.

Thornton recorded 1.06 inch of liquid precipitation, well above the average of 0.41 inch. Denver saw a bit less with 0.94 inch.

While no major snowstorms were seen, there were plenty of smaller events.  These gave Thornton 13.4 inches of the white stuff during the month, Denver saw 14.3 inches.  Both were about double the January average of 7.1 inches.  The official Denver measurement propelled January 2014 into the books as the 11th snowiest January on record.

Thornton, Colorado January 2014 temperature summary.
Thornton, Colorado January 2014 temperature summary.
Thornton, Colorado January 2014 precipitation summary.
Thornton, Colorado January 2014 precipitation summary.
CLIMATE REPORT
NATIONAL WEATHER SERVICE BOULDER, CO
517 AM MST SAT FEB 1 2014

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

...THE DENVER CO CLIMATE SUMMARY FOR THE MONTH OF JANUARY 2014...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1872 TO 2014

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE  DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH              76   01/27/1888
 LOW              -29   01/09/1875
HIGHEST            65   01/19        76     -11       66  01/24
LOWEST            -10   01/05       -29      19      -12  01/12
AVG. MAXIMUM     44.9              44.0     0.9     44.6
AVG. MINIMUM     17.3              17.4    -0.1     16.0
MEAN             31.1              30.7     0.4     30.3
DAYS MAX >= 90      0               0.0     0.0        0
DAYS MAX <= 32      4               5.5    -1.5        6
DAYS MIN <= 32     30              29.4     0.6       30
DAYS MIN <= 0       3               1.7     1.3        5 

PRECIPITATION (INCHES) 
RECORD 
 MAXIMUM         2.35   1883 
 MINIMUM         0.01   1933           
                        1934       
                        1952 
TOTALS           0.94              0.41    0.53     0.31 
DAILY AVG.       0.03              0.01    0.02     0.01 
DAYS >= .01         9               4.1     4.9        4
DAYS >= .10         3               0.9     2.1        1
DAYS >= .50         0               0.0     0.0        0
DAYS >= 1.00        0               0.0     0.0        0
GREATEST
 24 HR. TOTAL    0.26   01/30 TO 01/31           01/28 TO 01/29
                                                          01/29 TO 01/29
                                                          01/29 TO 01/29
 STORM TOTAL       MM                                 MM
 (MM/DD(HH))            MM                    01/29(00) TO 01/29(00)
                                                 01/29(00) TO 01/29(00)9
                                                 01/29(00) TO 01/29(00)9

SNOWFALL (INCHES)
RECORDS
 TOTAL             MM   MM
TOTALS           14.3               7.0

DEGREE_DAYS
HEATING TOTAL    1046              1063     -17     1067
 SINCE 7/1       3497              3531     -34     3300
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              10.7
RESULTANT WIND SPEED/DIRECTION   4/230
HIGHEST WIND SPEED/DIRECTION    36/290    DATE  01/12
HIGHEST GUST SPEED/DIRECTION    44/280    DATE  01/12

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.50
NUMBER OF DAYS FAIR           10
NUMBER OF DAYS PC             14
NUMBER OF DAYS CLOUDY          7

AVERAGE RH (PERCENT)     56

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                0     RAIN                       0
LIGHT RAIN                0     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                2     SNOW                       5
LIGHT SNOW               11     SLEET                      0
FOG                      11     FOG W/VIS <= 1/4 MILE      4
HAZE                      4

-  INDICATES NEGATIVE NUMBERS.
R  INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T  INDICATES TRACE AMOUNT.