AREA FORECAST DISCUSSION

 
 FXUS66 KEKA 231143
 AFDEKA
 
 AREA FORECAST DISCUSSION
 NATIONAL WEATHER SERVICE EUREKA CA
 345 AM PST MON NOV 23 2009
 
 .SYNOPSIS...HIGH PRESSURE WILL YIELD DRY WEATHER TODAY THROUGH 
 WEDNESDAY. A STORM SYSTEM WILL APPROACH THE REGION LATE ON 
 THANKSGIVING DAY AND INTO FRIDAY...BRINGING THE THREAT FOR RAIN AND 
 HIGHER ELEVATION SNOW. DRY WEATHER IS EXPECTED TO RETURN FOR NEXT 
 WEEKEND.
  
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 .DISCUSSION...NO MAJOR WEATHER CONSIDERATIONS IN THE SHORT RUN WITH 
 THE NEXT STORM SYSTEM SLATED FOR LATE THANKSGIVING DAY AND FRIDAY.
 
 EARLY MORNING WEATHER ROUNDUP FEATURES WEAK RIDGING ALOFT WITH 
 OFFSHORE FLOW NEAR THE SURFACE PROVIDING ONLY A FEW PASSING HIGH 
 CLOUDS. GOOD RADIATIONAL ESCAPE HAS ALLOWED TEMPS ALONG THE COAST TO 
 FALL INTO THE MID TO UPPER 30S AT PRESS TIME AND WE`LL PROBABLY LOSE 
 A COUPLE OF MORE DEGREES BETWEEN NOW AND SUNRISE SO A FROST ADVISORY 
 WAS HOISTED UNTIL 9 AM PST. OTHERWISE...FAIR CONDITIONS ARE EXPECTED 
 TODAY ONCE INTERIOR VALLEY FOG BURNS OFF LATE THIS MORNING. LITTLE 
 CHANGE TO THE OVERALL PATTERN EXPECTED TONIGHT INTO WEDNESDAY AS 
 HIGH PRESSURE KEEPS THE STORM TRACK WELL TO THE NORTH. MODELS REMAIN 
 QUITE CONSISTENT ON THE NEXT SYSTEM APPROACHING THE REGION ON 
 THANKSGIVING DAY. CURRENT INDICATIONS SUGGEST THIS WON`T BE A LONG 
 DURATION STORM...BUT THE EXACT STRENGTH AND TRACK ARE STILL UP FOR 
 DEBATE AT THIS POINT. FREE-AIR SNOW LEVELS APPEAR TO REMAIN ABOVE 
 ALL MAJOR PASSES SO NO WINTER WEATHER TRAVEL DIFFICULTIES ARE 
 EXPECTED FOR HOLIDAY TRAVELERS...BUT SOME NON-ACCUMULATING SNOW MAY 
 MIX IN WITH RAIN AT PASS LEVEL AS COLDER AIR FILTERS IN BEHIND THE 
 DEPARTING STORM EARLY FRIDAY. THE HIGHEST PRECIPITATION AMOUNTS LOOK 
 TO BE TARGETED NEAR THE OREGON BORDER DOWN TO CAPE MENDOCINO WHERE 
 AN INCH OR TWO OF RAIN IS POSSIBLE. RIDGING IS EXPECTED TO FILL IN 
 BEHIND THIS SYSTEM SO A RETURN TO DRIER WEATHER IS ANTICIPATED FOR 
 NEXT WEEKEND. BURGER 
 
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 .MARINE...BUOY OBSERVATIONS THIS MORNING SHOW THE NORTHWEST SWELL 
 SLOWLY SUBSIDING. THE SCA FOR HAZARDOUS SEAS WILL REMAIN UP FOR A 
 FEW MORE HOURS. EXPECT LIGHT WINDS AND SEAS UNDER 10 FT ACROSS THE 
 WATERS THIS AFTERNOON. A LONGER PERIOD NORTHWEST SWELL NEAR 10 FT 
 WILL MOVE THROUGH THE WATERS TONIGHT, PROBABLY BRINGING A RETURN OF 
 SCA CONDITIONS. WINDS WILL REMAIN LIGHT THROUGH WEDNESDAY DUE TO A 
 WEAK PRESSURE GRADIENT ACROSS THE REGION. SEAS WILL ALSO REMAIN AT 
 OR JUST UNDER 10 FT TUESDAY AND WEDNESDAY. A STORM WILL BRING HIGHER 
 WINDS AND A LARGE NORTHWEST SWELL TOWARDS THE END OF THE WEEK. STROZ
 
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 .AVIATION...LIGHT OFFSHORE WINDS ARE BRINGING VFR TO ALL TAF SITES 
 THIS MORNING. A WEAK PRESSURE GRADIENT WILL CONTINUE TO BRING 
 GENERALLY LIGHT WINDS TO THE TAF SITES TODAY. VFR ARE EXPECTED TO 
 PREVAIL THIS AFTERNOON. STROZ
 
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 .RADAR...NOTE TO USERS...THE WFO EUREKA WEATHER SURVEILLANCE RADAR 
 KBHX FAILED AT 0307 PST /1107 UTC/ THIS MORNING. ELECTRONICS 
 TECHNICIANS WILL ATTEMPT TO RESOLVE THE PROBLEM LATER TODAY. A 
 RETURN TO SERVICE TIME HAS NOT YET BEEN ESTABLISHED. 
 
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 .EKA WATCHES/WARNINGS/ADVISORIES...
 
      FROST ADVISORY UNTIL 9 AM PST FOR CAZ001-CAZ002.
     
      SMALL CRAFT ADVISORY FOR HAZARDOUS SEAS ALL WATERS.
 
 
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