ZCZC NFDSPENES ALL
SPENES
.
SATELLITE PRECIPITATION ESTIMATES..DATE/TIME 05/25/07 2001Z
SATELLITE ANALYSIS BRANCH/NESDIS---NPPU---TEL.301-763-8678
LATEST DATA USED: GOES-12 1945Z
.
LOCATION...EXT S TEXAS...
.
ATTN WFOS...BRO...
ATTN RFCS...WGRFC...
.
EVENT...EXPLOSIVE DEVELOPMENT
.
SATELLITE ANALYSIS AND TRENDS...TAIL END OF OUTFLOW/MESO-COLD FRONT ACROSS
BRO CWA HAS RAPIDLY DEVELOPED IN LESS THAN 1.5HR FROM NO CONVECTION
TO VERY COLD TOPS THAT ARE EXPANDING RAPIDLY SHOWING OFF THE EXTREME
INSTABILITY IN THE AREA.  AT THE SFC THE OUTFLOW BOUNDARY HAS ORIENTED
E-W ACROSS SE STARR TO WILLACY/CAMERON CNTY LINE...VIS LOOP SHOWS FOCUSED
CU STREAMERS FROM NORTHERN TAMAULIPAS AND CLOSES 50KM OF THE GULF OF
MEXICO SURGING TOWARD THE BOUNDARY DUE PRESSURE FALLS ALONG THE SIERRA
MADRE AND APPROACHING OUTFLOW BOUNDARY... 1.8" PWS WERE ALREADY IN PLACE
ACROSS THIS AREA WITH A VERY HIGH FLUX OF 2.0" WOULD LEAD TO CAPABILITY
FOR VERY EXCESSIVE RATES WITH THIS EXPLOSIVE DEVELOPMENT.  WOULD EXPECT
RATE OVER 2.5-3.5" WITH THESE CELLS PARTICULARLY WHERE CELLS COMING
OFF HIGHER TERRAIN ARE MERGING INTO THE WESTERN PORTION OF THE LINE.
BECAUSE OF THE RAPID DEVELOPMENT...MOTION TRENDING HAS BEEN NEARLY
IMPOSSIBLE BUT OVERSHOOTING TOPS APPEAR TO BE HEADING VERY SLOWLY TOWARD
THE SSE WITH NEW DEVELOPMENT IN MEXICO THAT SHOULD MERGE THERE AS WELL.
.
SEE NCEP HPC DISCUSSION AND QPF/S FOR FORECAST.
....NESDIS IS A MEMBER OF 12 PLANET....
.
SSD/SAB WEB ADDRESS FOR PRECIP ESTIMATES:
HTTP://WWW.SSD.NOAA.GOV/PS/PCPN/
...ALL LOWER CASE EXCEPT /PS/PCPN/
.
LAT...LON 2670 9927 2670 9693 2563 9663 2586 9919
.
NNNN
 
Full Size Graphic


-