| 12-5-2002 STORM (The Earliest December Snow) | |||||
| For Past Snowstorms-Click here | |||||
| Obs. Num. | Time of Obs. 12-05-2002 |
Total Frozen Precip. Inches | Total Melted Precip. Inches | Temp. °F | Remarks for the Time Period |
| 0 | 0019 hrs. | 0.0 | 0.00 | 28.9 | Snow started at 0019 and is extremely light intensity - - Relative Humidity 54% now! |
| 1 | 0119 hrs. | 0.1 | Trace | 27.4 | Ground and street getting white ---snow crystals are broken and irregular very few single crystals -- Relative Humidity now 74% -- Rate now light steady snow |
| 2 | 0219 hrs. | 0.5 | 0.04 | 25.8 | Moderate snow now -- Relative Humidity 84% - - snow crystals show light riming many are broken and irregular |
| 3 | 0319 hrs. | 1.2 | 0.11 | 25.6 | Moderate steady snow - Barometer fall rate now 0.05 inches in one hour - Relative Humidity 87% |
| 4 | 0419 hrs. | 1.6 | 0.17 | 25.5 | Light to Moderate snow - Barometer fall rate now 0.06 inches in one hour - - snow crystals show light riming in small aggregates of broken and irregular particles - Relative Humidity & temperature now steady |
| 5 | 0519 hrs. | 2.0 | 0.22 | 25.4 | Light snow - Barometer fall rate now 0.04 inches in one hour |
| 6 | 0619 hrs. | 2.6 | 0.30 | 25.1 | Moderate snow - Barometer fall rate now 0.03 inches in one hour |
| 7 | 0719 hrs. | 3.3 | 0.38 | 25.3 | Moderate snow - Barometer fall rate now 0.03 inches in one hour- - snow crystals show riming and very few show single crystals |
| 8 | 0819 hrs. | 3.7 | 0.48 | 25.5 | Light to Moderate snow - Barometer fall rate now 0.02 inches in one hour- - |
| 9 | 0919 hrs. | 4.5 | 0.61 | 26.0 | Moderate snow - Snowfall rate increasing and snow crystals show moderate riming in small aggregates that bounce some on impact (graupel like) |
| 10 | 1019 hrs. | 4.9 | 0.69 | 26.0 | Light to Moderate snow - Barometer fall rate now 0.04 inches in one hour but the back edge of snow is near the Prince William County line |
| 11 | 1055 hrs. | 5.0 | 0.74 | 26.4 | Snow stopped about ten minutes ago and we now have a very light freezing drizzle |
| 12 | 1205 hrs. | 5.0 | 075 | 26.8 | Freezing rain and sleet until 1205 then a snow shower again -- Accumulation equaled the settling of the snow |
| 13 | 1245 hrs. | 5.0 | 0.77 | 27.8 | More snow showers and some sleet but accumulation still equaled the settling of the snow |
| 14 | 1315 hrs. | 5.0 | 0.78 | 28.1 | End of Precipitation |