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SATELLITE PRECIPITATION ESTIMATES..DATE/TIME 07/01/08 0125Z
SATELLITE ANALYSIS BRANCH/NESDIS---NPPU---TEL.301-763-8678
LATEST DATA USED: GOES-11 0100Z  HANNA
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LOCATION...WASHINGTON...
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ATTN WFOS...OTX...PDT...SEW...
ATTN RFCS...NWRFC...
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EVENT...CONVECTION JUST E OF THE SPINE OF THE CASCADES PRODUCING LOCALLY
HEAVY RAIN IN THE VIC OF W KITTITAS AND N YAKIMA
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SATELLITE ANALYSIS AND TRENDS...OVER THE LAST 1-2 HOURS HAVE NOTED
CONVECTION HAS BEEN NEARLY ANCHORED JUST EAST OF THE SPINE OF THE CASCADES
IN THE VIC OF KITTITAS AND N YAKIMA COUNTY.  CONVECTION APPEARS TO BE
AIDED BY LEAD NEGATIVELY TILTED VORTICITY LOBE OVER W WA AND CNTRL OR THAT
IS LIFTING UP THE W SIDE OF LONG-WAVE RIDGE AXIS.  UPSTREAM A STRONGER
SHORTWAVE AND ATTENDANT JET STREAK WAS BEGINNING TO SPREAD LARGER SCALE
FORCING OVER MOST OF OR AND S WA AND THIS MAY HELP TO CONTINUE THE LOCAL
HEAVY RAIN THREAT ON THE SHORT TERM BEFORE THE LOSS OF DAY-TIME HEATING.
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GOES SOUNDER INSTABILITY PARAMETERS WERE SHOWING A TONGUE OF CAPE WITH
APPROXIMATE VALUES ROUGHLY BETWEEN 750-1250 J/KG EXTENDING ALONG AND
JUST EAST OF THE CASCADES FROM W CNTRL OR AND EXTENDING N INTO CNTRL WA.
ORIENTATION OF THIS INSTABILITY AXIS RAISES THE THREAT FOR CONTINUED
REDEVELOPMENT ON THE S FLANK OF SYSTEM WITH DOWNSTREAM TRAINING INTO N
YAKIMA AND W KITTITAS COUNTIES.
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ALTHOUGH STORMS WERE ORIGINALLY HIGH BASED, BELIEVE THAT STATIONARY NATURE
TO THE STORMS HAVE HELP TO DRAMATICALLY INCREASE THE PRECIP EFFICIENCY
OF OVERALL SYSTEM.  HAVE NOTED A RATHER PERSISTENT OVERSHOOTING TOP OVER
THE LAST 1.5 HOURS ROUGHLY 25 MILES SE OF SMP AND BELIEVE THAT RAINFALL
RATES HAVE LIKELY INCREASED TO OVER 1.0"/HR WITH THE MOST INTENSE CORE
OF THIS COMPLEX.  MANUAL SATELLITE ESTIMATES ARE SUGGESTING THAT BETWEEN
1-2" HAS FELL IN THIS GENERAL AREA DURING THIS TIME FRAME.  WILL HAVE
TO KEEP AN EYE ON RAPID CLOUD TOP COOLING WITH DEVELOPING CONVECTION
WNW OF YKM TO SEE IF THAT TRAINS OVER AREAS THAT HAVE ALREADY RECEIVED
LOCALLY HEAVY RAIN.
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ALSO OF NOTE IS OVER THE PAST 30 MINUTES CLOUD TOPS WITH DEVELOPING
CONVECTION W OF EAT HAS RAPIDLY COOLED AN EXPANDED.  ADDITIONALLY, IT
APPEARS AS THOUGH CONVECTION IS BEGINNING TO DEVELOP ALONG THE HIGHER
TERRAIN TO THE SE IN E KITTITAS COUNTY AND DEEP LAYER WIND FIELDS
WOULD SUGGEST THAT THIS MAY TRAIN NNW TO JUST W OF EAT.  WILL CONTINUE
TO MONITOR.
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WILL CONTINUE TO MONITOR.
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SEE NCEP HPC DISCUSSION AND QPF/S FOR FORECAST.
....NESDIS IS A MEMBER OF 12 PLANET....
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SSD/SAB WEB ADDRESS FOR PRECIP ESTIMATES:
HTTP://WWW.SSD.NOAA.GOV/PS/PCPN/
...ALL LOWER CASE EXCEPT /PS/PCPN/
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LAT...LON 4788 12084 4778 12032 4732 12014 4691 12065 4659 12093
4677 12117 4706 12131 4759 12134
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