000
AGXX40 KNHC 130536
MIMATS

MARINE WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
135 AM EDT THU SEP 13 2007

MARINE WEATHER DISCUSSION FOR GULF OF MEXICO...CARIBBEAN SEA
AND SOUTHWEST NORTH ATLC S OF 31N W OF 55W.

MID LEVEL RIDGE CENTER NEAR 30N70W EXTENDS NE TO 42N45W AND SW 
ACROSS THE GULF. OLD CUTOFF LOW NEAR 41N35W WITH A WEAKNESS IN 
THE MID LEVEL PRES FIELD OVER OUR AREA BETWEEN 35W AND 50W. ON 
THE SURFACE TONIGHT ALL EYES ON INTENSIFYING T.S. HUMBERTO JUST 
OFF THE UPPER TX COAST. LATEST INFORMATION FROM RECON INDICATES 
HUMBERTO HAS ATTAINED HRCN STRENGTH..THUS ALL PRODUCTS WILL BE 
UNDATED TO REFLECT THIS INCREASE. T.D. EIGHT WELL E OF LESSER 
ANTILLES MOVING W 10 KT. 1022 MB HIGH CENTER NEAR 33N62W WITH 
RIDGE WSW ACROSS CENTRAL FL. WEAK TRPL WAVES ALONG 38W AND 73W. 

LATER DAY 1 MID LEVEL RIDGE BECOMING MORE ELONGATED ALONG 30N AS 
A STRONG ZONAL MID LEVEL FLOW SENDS WEAK IMPULSES BRUSHING ALONG 
IT'S NRN EDGE. A MID LEVEL WEAKNESS REMAINS BETWEEN 35W AND 50W 
OVER THE ATLC. ON THE SURFACE LATER DAY 1 HUMBERTO MOVES INLAND 
OVER SW LA/EXTREME SE TX WITH WINDS AND SEAS DECREASING OVER THE 
LOCAL GULF WATERS. T.D. EIGHT EXPECTED TO REACH T.S. INTENSITY 
WITH LITTLE CHANGE TO DIR. LITTLE CHANGE TO HIGH PRES RIDGE 
BASICALLY ALONG 30N. CARIB WINDS REMAIN QUITE STRONG IN CENTRAL 
SECTION WITH SPEEDS TO 25 KT.

FOR DAY 2 WHILE MID LEVEL RIDGE HOLDS FIRM ALONG 30N W OF 50W..A 
NEW STRONG SHORTWAVE MOVES RAPIDLY SE OVER THE UPPER MIDWEST. A 
WEAKER SHORTWAVE MOVES E ALONG 90W. WEAKNESS IN PRES FIELD 
REMAINS OVER E CENTRAL ATLC BETWEEN 35W AND 50W. ON THE SURFACE 
DAY 2 T.S. EIGHT MOVES TO NEAR 15N49W SLOWLY STRENGTHENING. GFS 
MODEL PICKS UP ON LOW MOVING TO NEAR 25N42W WITH WINDS TO 25 KT. 
RIDGE HOLDS ALONG 32N. CARIB WINDS DECREASE TO 15 TO 20 KT..GULF 
WINDS LIGHT.

OUTLOOK PERIOD... 

FOR DAY 3 MID LEVEL RIDGE WEAKENING E OF 80W AS STRONG SHORTWAVE 
MOVES E OVER NEW ENGLAND. RIDGE OVER SRN PLAINS STRENGTHENING. 
ON THE SURFACE DAY 3 T.S. EIGHT CONTINUES SLOW STRENGTHENING AS 
IT IS FORECAST TO MOVE TO NEAR 16N53W. MODEL CONTINUES WITH LOW 
NEAR 27N43W MOVING N CAUGHT IN MID LEVEL WEAKNESS. 1022 MB HIGH 
NEAR 33N60W. WEAK FRONT MOVES OFF NW GULF COAST WITH WINDS OF 15 
KT.

FOR DAY 4 LARGE SCALE TROUGHING SETTING UP ALONG 80W MAINLY N OF 
OF AREA WHILE MID LEVEL RIDGE ANCHORED OVER SRN PLAINS MAINTAINS 
AN AXIS TO 35N55W. ON THE SURFACE DAY 4 T.S. EIGHT CONTINUES 
SLOW MOTION TOWARD WNW BUT LITTLE FURTHER STRENGTHENING 
FORECAST. OTHER LOW OVER ATLC MOVING SLOWLY NWD TO 28N43W WITH 
WINDS OF 20 KT. FRONT OVER GULF DISSIPATES WITH WINDS 15 KT NW 
SECTION.  CARIB WINDS 10 TO 15 KT.

FOR DAY 5 MID LEVEL TROUGHING DEEPENS ALONG SE CONUS COAST WITH 
MID LEVEL RIDGE CENTER NEAR 33N95W. MID LEVEL TROUGHING WORKING 
WWD ALONG 33N FROM E ATLC TO 50W. ON THE SURFACE DAY 5 T.S. 
EIGHT MOVES TO NEAR 18N59W WITH LITTLE FURTHER STRENGTHENING. 
ATLC LOW MOVES SLOWLY N TO NEAR 29N43W WITH WINDS 20 TO 25 KT. 
WINDS 10 TO 15 KT OVER GULF AND CARIB. 
 
WARNINGS...
ATLANTIC...
NONE..BUT TROPICAL STORM CONDITIONS EXPECTED TO MOVE INTO AMZ080 
SUN 16 SEP.

CARIBBEAN...
NONE.

GULF OF MEXICO... 
HURRICANE WARNING...GMZ080.

FORECASTER RRG