NOAA Office of Satellite and Product Operations
Satellite Precipitation Message

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SATELLITE PRECIPITATION ESTIMATES..DATE/TIME 04/23/18 2013Z
SATELLITE ANALYSIS BRANCH/NESDIS---NPPU---TEL.301-683-1404
LATEST DATA USED: GOES 16 1930Z;BLTPW
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LOCATION...PUERTO RICO...
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ATTN WFOS...SJU...
ATTN RFCS...
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EVENT...HEAVY RAINFALL WITH AFTERNOON CONVECTION
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SATELLITE ANALYSIS AND TRENDS...THE LATEST SATELLITE MOISTURE ANALYSIS OVER PUERTO RICO INDICATES THE POTENTIAL FOR HEAVY RAINFALL WITH BLENDED TPW AMOUNTS 1.7"-2.0" OF POTENTIAL HOURLY RAINFALL AMOUNTS AND RECENT TRENDS OF DEVELOPING CONVECTION IN THE CENTRAL PART OF THE ISLAND OF PUERTO RICO WITH HOURLY RATES OF 2.13 INCH/HOUR.
ELSEWHERE ALONG THE HIGHER TERRAIN FROM EAST TO WEST RATES AVERAGE 0.50 INCHES/HR.
SURFACE MOISTURE CONVERGENCE FIELDS ARE NOT FAVORABLE. SATELLITE WATER VAPOR IMAGES INDICATE A STREAM OF MID LEVEL MOISTURE STREAMING IN FROM THE SW TOWARD PUERTO RICO WHILE LOW LEVEL SURFACE WINDS ARE COMING IN FROM AN EASTERLY DIRECTION. AREAS OF HIGHER TERRAIN WILL BE MORE SUSCEPTIBLE FOR LOCALIZED FLASH FLOODING UNTIL THIS EVENING WHEN THE SUN BECOMES LESS OF A FACTOR IN PROVIDING AN ELEVATED HEAT SOURCE FOR GENERATING POSITIVE VERTICAL VELOCITIES ASSOCIATED WITH THE LATEST CONVECTION.
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AN ANNOTATED SATELLITE GRAPHIC SHOWING THE HEAVY PRECIPITATION
THREAT AREA SHOULD BE AVAILABLE ON THE INTERNET ADDRESS LISTED
BELOW IN APPROXIMATELY 10-15 MINUTES.
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SHORT TERM OUTLOOK VALID 2015-0000Z...MEDIUM CONFIDENCE FACTOR
IN SHORT TERM OUTLOOK...AFTERNOON CONVECTION SHOWS A RECENT HISTORY WITH RATES OF RAINFALL RANGING FROM HALF AN INCH PER HOUR TO OVER TWO INCHES PER HOUR IN OBSERVED RATES OVER THE CENTRAL PORTION OF PUERTO RICO. A LOCALIZED RISK OF FLASH FLOODING IS MAINLY OVER THE HIGHER TERRAIN OF PUERTO RICO IN THE CENTRAL HIGHLANDS FROM E-W.
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....NESDIS IS A MEMBER OF NWSCHAT (NESDISSATELLITEPRECIP)....
....NESDIS IS A MEMBER OF 12 PLA2300Z...MEDIUM CONFIDENCE FACTOR
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FOR QUESTIONS AND COMMENTS CONCERNING THE SATELLITE
PRECIPITATION MESSAGES AND GRAPHICS PLEASE EMAIL
SSDPrecip@noaa.gov
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FOR PRECIP MESSAGES AND GRAPHICS ON THE WEB:
http://www.ospo.noaa.gov/Products/atmosphere/spe/
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FOR AUTOMATED SATELLITE PRECIPITATION ESTIMATES ON THE WEB:
http://www.star.nesdis.noaa.gov/smcd/emb/ff/CONUS.php
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LAT...LON 1880 6730 1877 6731 1876 6489 1764 6533 1765 6777

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