SNOW OBSERVATIONS
 
WEST HENRICO CO. - GLEN ALLEN VA SNOWFALL FOR 2017-2018
WINTER'S TOTAL     9.4 Inches
BACK TO CURRENT SNOW TABLE SNOWS OF PAST WINTERS

Days
Snow
Month
Snow
Day
Total
Snow
Inches

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Hourly
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Days with any measurable snow during the winter
Rating = Snowstorms must be greater than 1 inch of snow.
 1  Dec.  8-9  5.2 Storm 1 Yes  A cold front passed on December 7th and became stationary along the coast. It first looked like it would be just a little snow as weak low waves would move up the front and the precipitation would hardly reach inland to the Glen Allen area. But then a low pressure formed over SE Texas giving SE Texas about 5 inches of snow and tracked NE and produced a good snowstorm for the Glen Allen area. The precipitation started as a mix of rain and snow around 1350 on December 8. The mix changed to all snow at 1440 and snow became heavy at 1530 giving 1.1 inches in one hour. After 1830 the snow rate was about 0.3 of an inch per hour adding up to 3.8 inches by midnight and 0.56 inches of liquid. The snow tapered to very light flurries about 2300. The little snow that fell during the morning hours of the 9th melted as it fell. The temperature was near freezing during the storm but never fell below freezing. During the day of the 9th there was generally about 0. 2 inches of snow per hour with melting giving a total of 1.4 inches by the time it ended at 1900 hours. The models had trouble with this storm first predicting too little snow and by the end predicting too much snow.
 2  Dec.  12  0.1  Event1 Yes  A brief snow shower that lasted 34 minutes from 1824 to 1858 and gave 0.1 inches of snow.
 3  Jan.  03-04  1.9 Storm 2 Yes   This was a big snow for the east coast with 10 to 12 inches and also very high winds that caused coastal flooding in New England. Glen Allen was near the western edge of the storm and the storm lasted about 9 hours and 45 minutes giving 1.9 inches and the snowfall rate was very slow about 0.2 inches per hour. It was a very cold snow and from the time the precipitation showed up on radar over Glen Allen it took about 4 to 5 hours before the snow made it to the ground because of sublimation. At 1800 the dew point was only 8.3F. Whiteout conditions temporarily suspended flights at JFK airport, where the wind gusted as high as 55 mph. It was blizzard conditions along the coast with many coastal areas getting 60 mph winds. Central Park reported 7.8 inches of snow at 1 p.m. January 3, it snowed in Tallahassee, Fla. for the first time in nearly three decades on Wednesday morning, the city said, while residents marveled at their frozen pools and snow-dusted lawns. Charleston, SC had 5 inches of snow for the City's third snowiest day. The 12-inch tripping bucket gave a total of 0.21 inches but the heater in the gauge evaporates some of the liquid. The eight-inch gauge gave 0.24 inches and the core sample gave 0.25 inches. With the surface temperature as low as it was it was hard to rationalize a liquid to snow radio of less than 10 to 1. But after all the observations 0.03 inches will be added to the total. One other observation made last night at 2300 was the broken and irregular particles had moderate amount of riming. Thus the snow to liquid equivalent ratio was 8 to 1 !
 4  Jan.  17th  2.2 Storm 3 Yes  Glen Allen was near the northeast edge of this storm. The storms greatest snow production was in NC. See the snow map link- Snowmap The maximum snow rate was only 0.6 inches per hour between 0820 and 0920. The temperature was 33.2 when the snow started at 0520 but the temperature dropped all day and was around 25F when it ended. The melting snow early turned to ice on the streets by the end of the day. Because of the low temperatures overnight a two hour late opening for Henrico wasn't enough time for the sun to melt the ice they changed the late opening to a closure. However, by noon of the 18th most of the ice was melted with very clear day and a high temperature of 43.5F. The total moisture in the storm was only 0.19 inches and the snow to liquid equivalent ratio was 12 to 1 and with a high of 56.2F on the 19th most of the snow was gone by the end of the day. In the video the 10 to 20 mph wind removing snow from the camera snowboard only occurred during the afternoon of the 17th. The text should have been removed earlier on the video.
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