Major Extratropical Cyclones of the Northwest United States: Historical Review, Climatology, and Synoptic Environment

Figure 3: Sea level pressure analyses for the 1962 Columbus Day (a) and 1993 Inauguration Day cyclones (b). Short-term (three-hour) sea level pressure forecasts for the 2006 Chanukah Eve storm (c) and the December 2007 coastal storm (d) from the 12-km domain of the UW regional MM5 prediction system. Contour interval is 1 hPa. (a) is from Lynott and Cramer (1966) and (b) is from Steenburgh and Mass (1996).