USGS-landslides.20071203T180530 baum@usgs.gov 20071203T180530.000Z Actual Alert Public en-US Geo Expected Moderate Possible National Weather Service Issues Landslide Advisory for Western Washington ...HEAVY RAINFALL WILL GIVE A RISK FOR LANDSLIDES TO WESTERN WASHINGTON THROUGH TONIGHT.. HEAVY RAINS OF 3 TO 6 INCHES OVER THE PAST 24 HOURS HAVE SATURATED SOILS AROUND WESTERN WASHINGTON. HEAVY RAINFALL RATES OF 0.25 TO TO 0.50 INCHES PER HOUR WILL CONTINUE THROUGH THE MID AFTERNOON HOURS. THIS WILL PUT EXTRA PRESSURE ON SOIL STABILITY. INDICES DEVELOPED BY THE U.S.G.S. SHOW THAT LANDSLIDES ARE POSSIBLE DURING INTENSE RAINFALL OR WHEN RAINFALL AMOUNTS EXCEED ONE INCH IN 24 HOURS. OBSERVED RAINFALLS HAVE ALREADY EXCEEDED THAT AMOUNT TODAY...INCLUDING THE SEATTLE AREA. WHILE THE U.S.G.S. RAINFALL THRESHOLDS APPLY TO THE SEATTLE AREA OF PUGET SOUND...MOST OF THE LOWLANDS OF WESTERN WASHINGTON ARE SUSCEPTIBLE TO LANDSLIDES DUE TO WET SOILS. AREAS MOST SUSCEPTIBLE TO LANDSLIDES UNDER THESE CONDITIONS ARE STEEP COASTAL BLUFFS AND OTHER STEEP HILLSIDES. For more information, see the following web pages: HTTP://WWW.WRH.NOAA.GOV/SEW  http://landslides.usgs.gov/monitoring/seattle/rtd/plot.php http://landslides.usgs.gov/learning/prepare/ http://landslides.usgs.gov/regional/seattle/ http://landslides.usgs.gov/monitoring/seattle/rtd/plot.php Rex Baum, Jonathan Godt, or Ed Harp Seattle, Washington and other communities around Puget Sound.