The Third Storm of 2004-2005
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Obs. Num. Time of Observation JAN.
29  -   2005
Total Frozen Precip. Inches Total Melted Precip. Inches Temp. F Remarks for the Time Period
   0      1758 hrs.    0.0   0.00   30.4   The snow started at 1758.
   1      1900 hrs.    0.1   0.01   28.2   The snow started as very small flakes and falling at a light rate.
   2      2000 hrs.    0.4   0.04   27.1   The current snow rate is light to moderate. Flakes are now small aggregates of broken irregular particles.
   3      2100 hrs.    0.7   0.07   27.0   More sleet than snow now but still snow mixed in with the sleet. Sleet started within the last half hour.
   4      2200 hrs.    0.7   0.08   27.1   No snow last hour just a little sleet and now a little freezing rain is mixing in with the sleet. Already enough freezing rain to form a thin crust on the snow.
   5      2300 hrs.    0.7   0.09   27.6   Precipitation is now freezing drizzle and a very thin glaze has started to from on surfaces.
   6      2340 hrs.    0.7   0.09   27.6   This will be the last observation unless the precip. goes back to snow. It now looks like it will continue to be mainly a glaze forming from freezing light precipitation and perhaps a very little sleet during the rest of the night.
JAN.
30  -   2005
   0600 hrs.    1.2   0.34   28.9   Snow started again during the past hour and is now falling at a light to moderate rate in the form of small aggregates of broken irregular particles. We picked up 0.1 inches of sleet and frozen rain over night and now have 0.4 inches of new snow in the past hour. The frozen total includes the 0.1 inches of sleet and frozen rain/(Glaze).
   1      0700 hrs.    1.7   0.39   28.9   Snow is now falling at a light rate but was moderate for a few periods during the past hour. The precipitation has been all snow in the past hour and the temperature remained constant. The flakes are small to moderate size aggregates of broken irregular particles. From radar information it looks like the Annandale area should get about 2 to 2.25 hours of addition snow.
   2      0800 hrs.    1.9   0.41   29.3   Very light snow during the past hour. From radar information it looks like the Annandale area should get about 1 hour of addition snow.
  3    0900 hrs.    2.0   0.42   30.2   Only snow flurries now and snow will soon taper off and end.
  4    1000 hrs.    2.1   0.43   31.1   Only flurries during the past hour and the radar shows that flurries and a little more light snow is likely but less than 0.3 inches.
  5    1100 hrs.    2.1   0.43   31.3   Snow stopped around 1035 for about 10 minutes an only flurries during the rest of the past hour. The radar shows that flurries and a little more light snow is Loudoun County that will move through our area in the next hour. Look for an increase in the snowfall rate during the next hour or two.
  6    1200 hrs.    2.5   0.44   31.1   The current snow rate is light to moderate. Flakes are now moderate to large in size made of aggregates of broken irregular particles. The large snow flakes leave an uneven surface.
  7    1300 hrs.    2.9   0.45   32.0   Flakes this past hour were large in size made of aggregates of broken irregular particles and were fluffy and trapped a lot of air and had a low liquid content. Currently it has almost stopped snowing just light snow flurries.
  8    1400 hrs.    3.0   0.47   32.1   Flakes this past hour were moderate size aggregates and the temperature is now just above freezing. Currently a very light snow is falling.
  9    1500 hrs.    2.7   0.48   33.0   Snow flurries ended around 1445. Sun can be seen through the clouds and the temperature is above freezing. The snow is melting and settling the greatest snow depth was last hour.