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HYDROMETEOROLOGICAL DISCUSSION
NATIONAL WEATHER SERVICE / CALIFORNIA NEVADA RFC / SACRAMENTO CA
930 AM PST MON NOV 23 2009
...HIGH PRESSURE TO BRING DRY CONDITIONS...
.24 HOUR PRECIPITATION TOTALS (ENDING NOV 23 AT 400 AM PST)...
THE SOUTHERN END OF A COLD FRONT BRUSHED THE NORTHERN PORTION OF THE
FORECAST AREA...BRINGING LIGHT RAINFALL AMOUNTS AROUND 0.1" OR LESS
TO COASTAL SECTIONS NORTH OF THE SF BAY AREA. PRECIP ON THE WEST
SLOPES OF THE NORTHERN SIERRAS AND THE SRN CASCADES WAS GENERALLY
AROUND 0.1" OR LESS IN MOST LOCATIONS...WITH ISOLATED AREAS
RECEIVING 0.3" OR SLIGHTLY HIGHER. THE FAR NORTHERN PORTION OF
NEVADA ALSO PICKED UP A FEW HUNDREDTHS FROM THIS SYSTEM WITH LOCALLY
HIGHER AMOUNTS.
.METEOROLOGICAL CONDITIONS...
UPR RIDGE BUILDING ACROSS THE WEST COAST THIS MORNING WILL PERSIST
THROUGH MID-WEEK...BRINGING DRY CONDITIONS TO THE REGION. NEXT WEAK
SYSTEM SHOWS UP ALONG COASTAL SECTIONS EITHER ON THANKSGIVING DAY
(PER THE 27/00Z GEM)...OR ON FRIDAY ACCORDING TO THE 27/00Z GFS AND
EC. FOR NOW...WOULD LEAN TOWARD THE SLOWER SOLUTION...AS THIS HAS
BEEN MORE CONSISTENT. ALSO...THE EC IS THE WEAKEST WHILE THE GFS AND
GEM ARE THE STRONGEST AND FURTHEST SOUTH.
DAY 1 QPF (MON 23/12Z TO TUE 24/12Z): DRY.
DAY 2 QPF (TUE 24/12Z TO WED 25/12Z): DRY.
DAY 3 QPF (WED 25/12Z TO THU 26/12Z): DRY.
.HYDROLOGICAL CONDITIONS...
LITTLE CHANGE ON THE RIVERS AND STREAMS IS EXPECTED THROUGH THE
WEEK AS THE DRIER WEATHER PREVAILS.
MORE INFORMATION ON THE CNRFC WEBSITE AT HTTP://WWW.CNRFC.NOAA.GOV
KL/DRK/AM
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