| Hourly Weather | Sunday, December 20, 2009 | |||||||||||||||||
| * Blizzard * Cloudy, Record Heavy Snow, Drifting, Blowing Snow; Very Windy and Cold | ||||||||||||||||||
| Temperature | Hour | 24hr | Dew Point | Wind | Gust | |||||||||||||
| Time | Avg | Hi | Lo | Diff | Diff | Humidity | Avg | Hi | Lo | Speed | Dir | Hi | Dir | Barom | Liq | WC | Time | |
| 1 AM | 28.1 | 30 | 27 | +6 | 92% | 26.1 | 27 | 25 | 15 | N | 39 | NNE | 29.45 | ↓ | .16 | 16.3 | 1 AM | |
| 2 AM | 26.6 | 27 | 26 | -1.5 | +5 | 93% | 24.7 | 25 | 24 | 16 | N | 31 | NNW | 29.42 | ↓ | .17 | 13.9 | 2 AM |
| 3 AM | 24.7 | 26 | 24 | -1.9 | +4 | 92% | 22.7 | 23 | 22 | 21 | N | 34 | NNW | 29.41 | ↓ | .13 | 9.0 | 3 AM |
| 4 AM | 22.6 | 24 | 22 | -2.2 | +2 | 92% | 20.5 | 21 | 20 | 25 | NNW | 46 | NNW | 29.40 | ↘ | .12 | 5.3 | 4 AM |
| 5 AM | 21.1 | 22 | 21 | -1.5 | +1 | 91% | 18.9 | 19 | 19 | 23 | NNW | 40 | NNW | 29.44 | ↗ | .11 | 4.3 | 5 AM |
| 6 AM | 20.5 | 21 | 20 | -0.6 | +0 | 91% | 18.3 | 18 | 18 | 20 | NNW | 39 | NNW | 29.46 | ↑ | .10 | 4.4 | 6 AM |
| 7 AM | 20.3 | 20 | 20 | -0.2 | -0 | 91% | 18.1 | 18 | 18 | 18 | NNW | 35 | N | 29.48 | ↑ | .10 | 5.2 | 7 AM |
| 8 AM | 20.5 | 21 | 20 | +0.3 | -0 | 91% | 18.3 | 19 | 18 | 19 | NNW | 33 | NW | 29.50 | ↑ | .10 | 5.4 | 8 AM |
| 9 AM | 21.0 | 21 | 21 | +0.5 | -1 | 91% | 18.8 | 19 | 19 | 17 | NW | 32 | NNW | 29.53 | ↑ | .07 | 6.8 | 9 AM |
| 10 AM | 21.3 | 22 | 21 | +0.3 | -2 | 90% | 18.7 | 19 | 19 | 17 | NW | 34 | NNW | 29.55 | ↑ | .03 | 6.7 | 10 AM |
| 11 AM | 22.0 | 22 | 22 | +0.8 | -2 | 88% | 19.0 | 19 | 19 | 15 | NW | 30 | NW | 29.55 | ↗ | .02 | 8.8 | 11 AM |
| 12 N | 22.4 | 23 | 22 | +0.4 | -3 | 86% | 18.8 | 19 | 19 | 16 | NW | 31 | NNW | 29.54 | ↗ | .01 | 8.0 | 12 N |
| 1 PM | 23.7 | 24 | 23 | +1.4 | -4 | 88% | 20.7 | 21 | 21 | 14 | NW | 28 | W | 29.53 | ↘ | .01 | 11.3 | 1 PM |
| 2 PM | 23.6 | 24 | 23 | -0.1 | -6 | 84% | 19.3 | 20 | 19 | 15 | WNW | 29 | NW | 29.55 | → | .00 | 10.6 | 2 PM |
| 3 PM | 23.4 | 24 | 23 | -0.3 | -8 | 71% | 15.3 | 16 | 14 | 15 | WNW | 30 | WNW | 29.57 | ↗ | .00 | 10.2 | 3 PM |
| 4 PM | 23.5 | 24 | 23 | +0.1 | -8 | 65% | 13.3 | 14 | 13 | 15 | WNW | 28 | NW | 29.60 | ↑ | .00 | 10.7 | 4 PM |
| 5 PM | 23.3 | 24 | 23 | -0.2 | -9 | 59% | 11.1 | 12 | 11 | 15 | WNW | 30 | WNW | 29.62 | ↑ | .00 | 10.3 | 5 PM |
| 6 PM | 23.1 | 23 | 23 | -0.2 | -10 | 58% | 10.3 | 11 | 10 | 15 | WNW | 30 | NW | 29.64 | ↑ | .00 | 10.2 | 6 PM |
| 7 PM | 23.5 | 24 | 23 | +0.4 | -7 | 56% | 10.1 | 10 | 10 | 15 | NW | 30 | WNW | 29.65 | ↗ | .00 | 10.6 | 7 PM |
| 8 PM | 23.7 | 24 | 24 | +0.2 | -6 | 56% | 10.3 | 10 | 10 | 14 | NW | 28 | WNW | 29.65 | ↗ | .00 | 11.3 | 8 PM |
| 9 PM | 23.5 | 24 | 23 | -0.3 | -7 | 57% | 10.5 | 11 | 10 | 15 | WNW | 32 | WNW | 29.66 | ↗ | .00 | 10.6 | 9 PM |
| 10 PM | 23.3 | 24 | 23 | -0.1 | -7 | 58% | 10.7 | 11 | 11 | 15 | NW | 32 | NW | 29.67 | ↗ | .00 | 10.4 | 10 PM |
| 11 PM | 22.9 | 23 | 23 | -0.4 | -8 | 59% | 10.7 | 11 | 11 | 17 | NW | 33 | NW | 29.68 | ↗ | .00 | 8.9 | 11 PM |
| 12 M | 22.2 | 23 | 22 | -0.6 | -8 | 60% | 10.4 | 11 | 10 | 16 | NW | 31 | NW | 29.68 | ↗ | .00 | 8.7 | 12 M |
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