TTAA00 KSEW 250515
** SEW GRADIENT TABLE 05/25/12 05Z ** 250515Z
UIL- OTH- PDX- OLM- UIL- HQM- AST- BLI- UKI- AST- BLI- BLI-
DD/HH BLI SEA BLI BLI NUW SEA UIL YZT UIL SEA YQQ YWL
25/05 +0.2 +1.4 -1.6 -1.2 +0.1 +0.3 -0.7 -3.0 -3.9 0.0 -0.2 -2.4
25/03 +0.2 M -1.0 -1.3 -0.1 +0.2 -0.1 -3.5 -2.9 +0.4 -0.4 -2.3
25/01 -0.1 +3.5 -1.0 -1.6 -0.2 +0.6 +0.1 -3.7 -2.2 +0.7 -0.8 -1.5
24/23 -0.1 +3.9 -0.9 -1.6 -0.3 +0.9 +0.2 -3.5 -1.5 +0.8 -1.2 -0.4
24/21 -0.3 +3.2 -0.9 -1.4 -0.5 0.0 -0.6 -2.7 -1.2 -0.4 -1.0 +1.5
24/19 -1.0 M -1.4 -1.3 -1.0 -0.6 -0.4 -1.9 -0.2 -1.1 -0.5 +1.3
24/17 -1.1 M -1.2 -0.8 -1.0 -0.7 -0.3 -1.4 +0.6 -1.3 -0.2 +1.5
24/15 -1.1 M -0.6 -0.7 -1.0 -0.8 -0.1 -0.4 +0.9 -1.1 +0.4 +1.9
24/13 -1.1 M -0.2 -0.6 -1.2 -1.1 +0.2 +0.3 +0.8 -1.0 +1.0 +2.8
24/11 -1.1 M +0.8 +0.1 -1.3 -1.1 +0.5 +1.3 +0.5 -1.3 +1.5 +4.0
24/09 -0.5 M +2.0 +0.5 -0.9 -0.4 +0.9 +1.4 +0.5 -0.7 +1.7 +4.5
24/07 M M +2.3 +1.3 M 0.0 M +1.9 M +0.1 +1.9 +5.0
24/05 M M +2.8 +1.7 M +0.3 M +1.9 M +0.6 +2.1 +5.4
PDX- UIL- CLM- SEA- SEA- OLM- SEA- YKM- SHN- SHN- SEA- SMP-
DD/HH DLS CLM NUW EAT YKM YKM GEG GEG SEA NUW SMP EAT
25/05 +2.8 -0.7 +0.8 +3.3 M M +3.3 M -0.9 -1.5 M M
25/03 M -0.5 +0.4 +3.3 +4.3 +3.3 +3.1 -1.2 -1.3 -1.9 M M
25/01 M -0.6 +0.4 +2.9 +4.3 +3.4 +2.9 -1.4 -1.1 -1.9 M M
24/23 M -0.5 +0.2 +3.7 +3.9 +3.0 +2.5 -1.4 -1.3 -2.2 M M
24/21 M -0.5 0.0 +4.2 +4.3 +3.4 +2.2 -2.1 -1.5 -2.2 M M
24/19 M -0.6 -0.4 +4.0 +3.7 +2.7 +2.4 -1.3 -1.4 -1.7 M M
24/17 M -0.3 -0.7 +3.4 +3.1 +2.4 +2.6 -0.5 -1.3 -1.3 M M
24/15 M -0.3 -0.7 +3.6 +2.4 +1.8 +2.6 +0.2 -1.2 -1.2 M M
24/13 M -0.3 -0.9 +3.9 +2.3 +1.6 +3.3 +1.0 -1.4 -1.4 M M
24/11 +1.2 -0.6 -0.7 +4.7 +3.0 +2.4 +5.0 +2.0 -1.5 -1.0 M M
24/09 +2.0 -0.4 -0.5 +5.2 +3.6 +3.0 +5.9 +2.3 -1.4 -0.7 M M
24/07 +2.1 M -0.4 +5.3 +3.7 +3.7 +6.4 +2.7 -1.2 -0.5 M M
24/05 +2.4 M 0.0 +5.6 +3.9 +4.0 +6.2 +2.3 -1.1 0.0 M M
| Rules of thumb for estimating wind speed and direction based on local pressure gradients: | ||
| (UIL-BLI) * 10 | = | West wind in Strait of Juan De Fuca if gradient is positive |
| (UIL-BLI) * 5 | = | East wind in Strait of Juan De Fuca if gradient is negative |
|
(OTH-SEA) |
= | South wind at SEA if gradient is positive. North wind if gradient is negative. |
| (PDX-BLI) * 5 | = |
South wind at SEA if gradient positive. North wind if gradient negative. |
|
(OLM-BLI) * 10 |
= | South wind at SEA if gradient positive. North wind if gradient negative. |
| (SEA-EAT) | = | Westerly component at SEA if gradient positive. Easterly if gradient negative. |
| (SEA-GEG) | = | Westerly component at SEA if gradient positive. Easterly if gradient negative. |
| (SEA-SMP) | = | Westerly component at SEA if gradient positive. Easterly if gradient negative. |