Table 1. Surface observations on 2 January 1999.
| Gatlinburg-Pigeon Forge Airport |
| Time (UTC) |
Cloud heights (km) and sky coverage |
Temp/Dewpt (oC) |
Wind Direction |
Wind Speed (m s-1, G=gusts) |
Pressure (hPa) |
| 1400 |
3.7 CLR |
3 / -2 |
|
Calm |
1015.6 |
| 1500 |
1.5 SCT |
7 / 0 |
|
Calm |
1014.9 |
| 1600 |
1.5 SCT, 2.6 SCT |
9 / 2 |
090o |
1.5 |
1014.2 |
| 1700 |
1.5 BKN |
12 / 4 |
050o |
1.5 |
1012.2 |
| 1800 |
1.5 OVC |
14 / 7 |
150o |
3.0 |
1009.8 |
| 1900 |
1.4 SCT, 2.7 BKN |
15 / 7 |
120o |
5.5 G 9.0 |
1007.8 |
| 2000 |
1.5 BKN |
16 / 7 |
120o |
6.0 G 9.5 |
1006.1 |
| 2100 |
1.5 BKN, 2.3 BKN, 2.4 BKN |
15 / 7 |
110o |
4.5 G 7.5 |
1005.4 |
| 2200 |
1.1 SCT, 1.5 SCT, 2.7 BKN |
13 / 7 |
100o |
2.5 G 7.0 |
1004.7 |
| 2300 |
1.5 SCT, 2.6 BKN |
14 / 7 |
140o |
4.5 G 7.0 |
1003.7 |
| Knoxville McGhee Tyson Airport |
| Time (UTC) |
Cloud heights (km) and sky coverage |
Temp/Dewpt (oC) |
Wind Direction |
Wind Speed (m s-1, G=gusts) |
Pressure (hPa) |
| 1400 |
1.1 FEW, 2.4 SCT |
2 / -2 |
020o |
2.0 |
1015.1 |
| 1500 |
1.8 SCT, 2.1 BKN |
4 / -3 |
340o |
3.5 |
1014.6 |
| 1600 |
1.5 FEW, 2.3 SCT, 2.9 OVC |
6 / -2 |
340o |
3.0 |
1013.8 |
| 1700 |
1.5 BKN, 2.0 OVC |
10 / 2 |
Variable |
2.5 |
1011.2 |
| 1800 |
1.3 SCT, 1.8 BKN, 2.9 OVC |
14 / 7 |
140o |
5.0 G 12.0 |
1008.4 |
| 1900 |
1.3 BKN, 1.8 BKN |
14 / 7 |
160o |
8.5 G 11.5 |
1006.4 |
| 2000 |
1.4 SCT, 2.4 SCT, 2.7 BKN |
14 / 7 |
160o |
6.0 G 12.5 |
1004.4 |
| 2100 |
2.4 BKN, 2.9 BKN |
13 / 7 |
150o |
8.5 G 11.5 |
1003.4 |
| 2200 |
1.2 SCT, 1.7 SCT |
13 / 8 |
150o |
4.5 |
1003.1 |
| 2300 |
0.9 SCT, 1.1 BKN, 2.3 OVC |
9 / 8 |
270o |
10.0 G 12.5 |
1004.7 |
| Knoxville Downtown Island Airport |
| Time (UTC) |
Cloud heights (km) and sky coverage |
Temp/Dewpt (oC) |
Wind Direction |
Wind Speed (m s-1, G=gusts) |
Pressure (hPa) |
| 1400 |
2.1 BKN |
5 / -4 |
080o |
3.0 |
1015.6 |
| 1500 |
2.0 BKN, 2.3 OVC |
6 / -4 |
080o |
2.5 |
1015.2 |
| 1600 |
2.3 SCT, 2.7 OVC |
8 / -2 |
070o |
2.0 |
1014.2 |
| 1700 |
2.1 BKN, 2.7 OVC |
9 / 1 |
070o |
2.5 |
1011.9 |
| 1800 |
1.5 BKN, 2.7 OVC |
11 / 3 |
070o |
3.0 |
1008.8 |
| 1900 |
1.5 OVC |
13 / 3 |
350o |
1.5 |
1007.1 |
| 2000 |
1.5 SCT, 2.0 BKN, 2.1 BKN |
13 / 5 |
250o |
2.0 |
1005.4 |
| 2100 |
1.5 SCT, 2.3 BKN, 2.6 OVC |
16 / 8 |
130o |
4.5 |
1004.1 |
| 2200 |
1.5 OVC |
16 / 8 |
140o |
2.5 |
1004.1 |
| 2300 |
0.2 SCT, 1.2 BKN, 2.4 OVC |
11 / 8 |
290o |
6.5 G 12.0 |
1005.8 |
|
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