Severe Thunderstorm Warning 10, NWS Sacramento, CA

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SACRAMENTO CA
320 PM PDT TUE JUL 4 2000

  A WEAKER ONSHORE FLOW COMBINED WITH A MIXED MARINE LAYER HAS
ALLOWED AFTERNOON TEMPERATURES TO RISE ABOVE YESTERDAY/S. THIS AHEAD
OF A STRONG SUMMER H5 SHORT WAVE. RADAR MOSAIC SHOWING GOOD RETURNS
ACROSS THE OREGON CASCADES WITH WEAKER RETURNS ACROSS OUR CASCADES
AND NORTHERN COASTAL MOUNTAINS. VIS SAT PIX ALSO SHOWING DRY
CONVECTION AS FAR SOUTH AS LAKE COUNTY AND THE TAHOE REGION. MSAS
SHOWS BEST LI/S ACROSS THE CASCADES AND NORTHERN SACRAMENTO VALLEY
WITH BEST MOISTURE ACROSS THE COASTAL RANGE. HAVE CONTINUED TREND AND
LEFT SMALL EVENING POPS ACROSS NORTHERN ZONES INCLUDING THE VALLEY
AND ADJACENT FOOTHILLS.
  H20 VAPOR SAT PIX DEPICTS THE NEXT SHORT WAVE NORTH OF 40N AND WEST
OF 130W. 12Z MODELS PIVOT THIS FEATURE INTO NORCAL TOMORROW. AT THE
SAME TIME ACROSS THIS AREA...PW/S INCREASE AS THE DOES CAPE VALUES.
LI/S ARE ON THE DECREASE. HAVE BUMPED UP POPS TOMORROW ACROSS
NORTHERN ZONES AND LEFT REMNANT SMALL POPS FOR TOMORROW EVENING.
  ANOTHER SHORT WAVE MOVES THROUGH THE UPPER TROF THURSDAY AS THE ONE
THAT AFFECTS US TOMORROW EJECTS NORTHEASTWARD. MODELS HAVING A
DIFFICULT TIME PLACING THIS LATE WEEK FEATURE WITH THE AVN AND NOGAPS
KEEPING MOST OF THE ENERGY OFFSHORE WHILE THE ETA AND OLD MRF ARE
MORE PROGRESSIVE. WILL MAINLY SIDE WITH THE MORE WEST SOLUTIONS AND
KEEP POPS FOR OUR CWA ON THE SMALL SIDE.
  TEMPERATURES ACROSS THE CWA WILL TREND DOWN TOMORROW WITH THE SHORT
WAVE MOVING OVERHEAD. BESIDES SYNOPTIC COOLING...CLOUDS ESPECIALLY
ACROSS THE NORTHERN CWA WILL AFFECT SOLAR HEATING. FOR DAY TWO...WITH
LESS CLOUDS AND AIRMASS MODERATION WILL BUMP THINGS UP FOR THE MOST
PART. THE EXTENDED SHOULD SEE A VERY SLOW RISE TOWARD MORE NORMAL
CONDITIONS.

.STO...NONE.

BLU BB 048/062 048/061 047 670220
RBL BE 061/079 060/082 059 672320
SAC BB 055/077 054/078 055 670000

KRUZDLO

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