FORECAST DISCUSSION – From The Cal-U Weather Laboratory
Issued: 2000Z WEDNESDAY, OCTOBER 28, 2009

CURRENTLY THE CAL U WX CENTER IS UNDER MOSTLY CLOUDY SKIES WITH A TEMP OF 52F AND DEW PT TEMP OF 49F...LEADING TO A CURRENT RH OF 89%. WINDS ARE BRISK FROM THE WSW AROUND 7 MPH AND PRESS IS RISING AT 1014 mb.

SAT IMGRY SHOWS CLOUDS OVER THE FA AS WELL AS TO OUR W...WITH CLEARING S OF THE MD LINE. ANOTHER AREA OF LOW CLOUDS IS VIS OVER OK/TX. THE LP SYSTEM WHICH EFFECTED THE AREA EARLIER TODAY IS VIS MOVING THROUGH NEW ENG. WV IMGRY SHOWS A LARGE DRY SLOT OVER THE APP MTNS MOVING INTO THE S FA WHICH WILL BRING CLEARING SKIES TONIGHT. A LARGE AREA OF MOISTURE AS WELL AS A LARGE TROUGH IS PRESENT OVER THE ROCKIES.

UPPR LVL ANALYSIS AT 250 MB CONFIRMS THE PRESENCE OF A LARGE...THIN TROUGH LOCATED OVER THE ROCKIES. MULTIPLE JET STREAKS FROM 110 TO 150 KTS ARE LOCATED AT VARIOUS AREAS OF THE TROUGH...WITH THE HIGHEST WINDS LOCATED ON THE UPSTREAM PORTION. A CLOSED CONTOUR IS PRESENT AT THE BASE OF THE TROUGH AT 500 MB. A SHORTWAVE CAN ALSO BE SEEN OVER THE GREAT LAKES REGION AT 12Z TODAY WHICH WAS THE CAUSE OF THE LP SYSTEM NOW OVER NEW ENG. THIS SYSTEM HAS A CLOSED CONTOUR AT 700 MB. RAOB AT KPIT SHOWS AN EXTREMELY MOIST ATMOS AT 12Z UP TO 450 MB WHERE THE DEW PT TEMP SENSOR FAILED. SVR WX INDICES DID INDICATE SHOWERS TODAY.

SFC ANALYSIS SHOWS A 1016 MB HP SYSTEM MOVING INTO THE FA FOLLOWING THE LP SYSTEM. THIS WILL BRING FAIR WX TO THE FA TOMORROW. TWO OTHER AREAS OF LP...BOTH 998 MB...ARE LOCATED OVER THE S ROCKY MTNS IN THE TX PANHANDLE AND S CO. A CF STRETCHES INTO W NM. THESE SYSTEM WILL COMBINE AND BRING US WET WEATHER INTO THIS WEEKEND.

NAM AND GFS DIFFER SLIGHTLY ON THE TIMING OF THE STRMS PROJECTED TO MOVE INTO THE FA AT THE END OF THE WEEK...WITH GFS SHOWING RAIN BEGINNING AS EARLY AS FRI AFTERNOON. BOTH SHOW CONTINUED RAIN INTO SAT...AND EVEN THE POSSIBILITY OF SOME LINGERING SHOWERS SUN MORN. GFS SHOWS ANOTHER LP SYSTEM MOVING DOWN FROM CANADA ON MON...ALTHOUGH THIS SHOULD STAY FAR ENOUGH NORTH TO NOT EFFECT THE FA.

THE FA WILL SEE A SLGHT RISE IN TEMPS INTO THE MID TO UPPR 60S TOMORROW...BUT THE LP SYSTEM MOVING THROUGH THIS WEEKEND WILL QUICKLY LOWER OUR TEMPERS BACK TO AROUND 60...AND EVEN INTO THE MID 50S BY MON.

NWS ADVISORIES/WATCHES/WARNINGS:  NONE

Prepared by: / fouchard /
The Cal-U Weather Laboratory