Satellite Precipitation Estimates (TXUS20 KWBC)
Issued by NWS

Home | Current Version | Previous Version | Text Only | Print | Product List | Glossary On
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19
000
TXUS20 KNES 241818
SPENES
ZCZC NFDSPENES ALL
SPENES
WAZ000-
.
SATELLITE PRECIPITATION ESTIMATES..DATE/TIME 11/24/14 1818Z
SATELLITE ANALYSIS BRANCH/NESDIS---NPPU---TEL.301-683-1404
LATEST DATA USED: GOES-15 1800Z  KUSSELSON
NOAA AMSU:1306Z 1448Z 1255Z   DMSP SSMIS:1619Z 1423Z 1241Z
.
LOCATION...W WASHINGTON...NW OREGON...
.
EVENT...WARM FRONTAL RAIN...SATELLITE FEATURES FOR UPCOMING HVY RAIN
EVENT...
.
SATELLITE ANALYSIS AND TRENDS...LATEST 6HR QMORPH MICROWAVE RAIN
ACCUMULATIONS THROUGH 15Z THAT USE GOES WINDS TO MOVE THE RAIN ALONG
CONTINUED TO SHOW A MAX AREA OF RAIN OF 0.75   -1.0    CENTERED 49N/127W
TO 50N/129W AND ASSOCIATED WITH A NORTHERN WARM FRONT.
THIS MAX AREA OF RAIN HAS BEEN PERSISTENTLY MOVING ESE THIS MORNING.
RAIN RATES FROM SSMIS HAVE NOT BEEN IMPRESSIVE WITH MAX AREA CLOSER TO
48N IN THE 1423 TO 1619Z TIME FRAME. AMSU RAIN RATES HAVE SHOWN HIGHEST
RATES GO INTO N VANCOUVER ISLAND, WHILE ANOTHER AREA OF LIGHT TO MODERATE
RATES HAD DEVELOPED RECENTLY CENTERED ON 48.5/49N/130.5W AND LOOKS TO
BE THE  NEW RAIN AREA THAT WILL GRADUALLY WORK INTO NW WA THIS AFTERNOON.
ALSO OF INTEREST IS TWO JET CORES ANALYSED ON SATELLITE AND WITH SATELLITE
WINDS...ONE IN THE NORTH CROSSING THE FRONT AT POINT OF OCCLUSION NEAR
52N/130W WITH WARM FRONT EXTENDING SOUTH AND SE AND STATIONARY FRONT
OFF TO THE SOUTHWEST.    ANOTHER JET CORE SEEN INCHING NORTH AND NE AND
NOSING ACROSS SW WA AND SOUTH OF THAT WAS A WEAK TROUGH OR NEO-WARM
FRONTAL BOUNDARY (AT LEAST HOW IT WAS DEPICTED IN THE PWAT IMAGERY)
THAT WAS LIFTING NE AND EAST TOWARD THE NORTHERN OREGON/SW WA COAST, BUT
HAD LITTLE OR RAIN WITH IT.  WELL DEFINED MOISTURE PLUME WITH BULGING
WAVE BACK AT 30/31N/155W WAS EXTENDING NORTHEAST AND CONCENTRATED THRU
44N/140W TO 50N/129W AND FORMING THE ATMOSPHERIC RIVE AND MOISTURE
TRANSPORT THAT ALONG WITH THE JET AND EMBEDDED SHORT WAVES CAN GIVE A
LONG PERIOD OF MODERATE TO HVY RAIN TO PARTS OF WESTERN WA...THE WA
CASCADES AND MAYBE SOUTH TOWARD NORTHERN OREGON IN THE COMING DAYS.
KEYS TO WATCH ARE THE DOUBLE JETS AND HOW CLOSE THEY COME OR MERGE OVER
THE PACIFIC NORTHWEST...WARM FRONTAL BOUNDARIES AS THEY COME CLASHING
TOWARD WESTERN WA...HIGH AMOUNTS OF UPSLOPE FLOW WITH THIS HIGH MOISTURE
THAT HAS SUBTROPICAL ORIGINS AND ANY STEADY STATE PROPERTIES...LIKE WHAT
IS GOING ON NOW WITH WAVE AND MOISTURE OUT AHEAD THAT CAN STAY PERSISTENT
OVER ONE SPOT FOR ANY LENGTH OF TIME.  WILL TRY TO PICK OUT THE IMPORTANT
SATELLITE FEATURES AS THIS EVENT UNFOLDS OVER THE NEXT 24HRS.
.
SHORT TERM OUTLOOK VALID 1815-0000Z...MEDIUM CONFIDENCE FACTOR IN SHORT
TERM OUTLOOK...LATEST QMORPH 6HR ACCUMULATIONS NOW THRU 16Z CONTINUING
TO SHOW THE 0.75:-1.0    AREA SHIFTING SLOWLY ESE AND NOW HAS A MAX
ISOLATED AMOUNT NEAR 1.2    COASTAL VANCOUVER ISLAND AND WILL HAVE TO
KEEP AN EYE ON THIS WITH NORTHERN WARM FRONT AS IT CONTINUES TO HEAD
FOR NW WA.   OROGRAPHICS AS THIS RAIN MOVES INTO WESTERN WA CAN ADD
A LITTLE BIT MORE TO THESE 6HR TOTALS WITH STEADY STATE CONDITIONS.
SO A RAMP UP IN RAIN LIKELY AS THE AFTERNOON WEARS ON INTO NW WA AND
THE OLYMPICS AND GRADUALL WORKING EAST AND SE AND INLAND FOR START OF
A MULTIDAY PERIOD OF SURGES OF LIGHT TO MODERATE RAIN THAT OCCASIONALLY
IS HEAVY, ESPECIALLY FAVORED OREOGRAPHIC AREAS.
.
....NESDIS IS A MEMBER OF 12 PLANET....
.
FOR QUESTIONS AND COMMENTS CONCERNING THE SATELLITE
PRECIPITATION MESSAGES AND GRAPHICS PLEASE EMAIL
SSDPRECIP@NOAA.GOV
.
FOR PRECIP MESSAGES AND GRAPHICS ON THE WEB:
HTTP://WWW.OSPO.NOAA.GOV/PRODUCTS/ATMOSPHERE/SPE/
.
FOR AUTOMATED SATELLITE PRECIPITATION ESTIMATES ON THE WEB:
HTTP://WWW.STAR.NESDIS.NOAA.GOV/SMCD/EMB/FF/CONUS.PHP
.
LAT...LON 4424 12478 4465 12176 4926 12234 4802 12679 4516 12636
.
NNNN

=



USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.