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SATELLITE PRECIPITATION ESTIMATES..DATE/TIME 03/30/08 1555Z
SATELLITE ANALYSIS BRANCH/NESDIS---NPPU---TEL.301-763-8678
LATEST DATA USED: GOES-12 1545... AUTO/HYDRO ESTIMATORS THROUGH 1515Z GG
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LOCATION...EXT W LOUISIANA...E TEXAS...
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ATTN WFOS...SHV...
ATTN RFCS...LMRFC...WGRFC...
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EVENT...SIGNIFICANT FF SIGNATURE
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SATELLITE ANALYSIS AND TRENDS...FOR THE PAST 3 HOURS VIS/IR HAS SHOWN
OVERSHOOTING TOPS/IR TOPS TO -70C OVER S SHELBY/N SABINE/NE SAN AUGUSTINE
COUNTIES.  WITH PWS OF 1.7" PER GPS/GOES SOUNDER SATURATED COLUMN AND
NO MOTION SATELLITE AUTOMATED TECHNIQUES ARE NOT DOING WELL...WITH
3 HOUR ESTIMATES OF 2.2 AND 3.0"...HOWEVER MANUAL ESTIMATIONS FROM
1145-1515Z ARE MORE IN LINE WITH 6-7" AT THE TIP OF S SHELBY.  FURTHER
NORTH ACROSS GREGG AND HARRISON COUNTY SIMILAR OVERSHOOTING TOPS HAVE
BEEN SEEN INTERMITTENTLY AS EACH SUCCESSIVE ROUND OF NEW CELLS THAT
DEVELOPED IN A VERY FAVORABLE BACKBUILDING ENVIRONMENT WITH GOOD SSWLY
FLOW ISENTROPICALLY LIFTING OVER A WEAK FRONTAL BOUNDARY ACROSS NE TX.
AUTOMATED TOTALS ARE BETTER HERE...WITH 2.0" AND 3.2" OVER THE 3HRS...BUT
MANUAL ARE ABOUT 4-5".

VISIBLE LOOP SHOWS REASONS FOR SLOW/NO MOTION... WITH GOOD SELY
FLOW ACROSS LA/MS SEEN IN LL TRACERS AND SWLY FLOW ACROSS CENTRAL
TX. RECENTLY SWLY FLOW ACROSS N TX/OK HAS BECOME A BIT STRONGER AND HAS
ORIENTED CONVECTION FROM SW-NE...AS CAN BE SEEN OVER SE OK... THIS HAS
TRANSLATED SOUTHWARD ACROSS NE TX AND SO NEW BACKBUILDING DEVELOPMENT
HAS HAD STRONGER FLOW FOR INCREASED CELL MOTION VECTORS.   STILL NEW
DEVELOPMENT TOWERS CAN STILL BE SEEN ACROSS E TX THAT WILL CONTINUE TO
SUPPORT THE COMPLEX WITH NO APPARENT COMPLEX MOTION THOUGH INDIVIDUAL
CELLS ARE NOW BEGINNING TO MOVE (SEE OVERSHOOTING TOPS).  PLEASE SEE
GRAPHIC AT WEB ADDRESS BELOW....
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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 3296 9436 3139 9367 3117 9438 3265 9545
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