Tropical Storm Ernesto was just upgraded at the 5pm report. As of this time there are
Tropical Storm Warnings up for the PORTIONS OF THE LESSER ANTILLES.
5:00 PM AST Thu Aug 2 Location: 12.8°N 56.6°W Moving: W at 22 mph Min pressure: 1006 mb Max sustained: 50 mph
AT 500 PM AST...2100 UTC...THE CENTER OF TROPICAL STORM ERNESTO WAS
LOCATED NEAR LATITUDE 12.8 NORTH...LONGITUDE 56.6 WEST. ERNESTO IS
MOVING TOWARD THE WEST NEAR 22 MPH...35 KM/H. THIS GENERAL MOTION
IS EXPECTED TO CONTINUE FOR THE NEXT 48 HOURS. ON THE FORECAST
TRACK...THE CENTER OF THE STORM SHOULD BE NEAR THE WINDWARD
ISLANDS BY LATE TONIGHT OR EARLY FRIDAY.
REPORTS FROM AN AIR FORCE RESERVE HURRICANE HUNTER PLANE INDICATE
THAT THE MAXIMUM SUSTAINED WINDS ARE NEAR 50 MPH...85 KM/H...WITH
HIGHER GUSTS. SOME SLIGHT STRENGTHENING IS FORECAST DURING THE
NEXT 48 HOURS.
TROPICAL-STORM-FORCE WINDS EXTEND OUTWARD UP TO 115 MILES...185 KM
FROM THE CENTER...MAINLY TO THE NORTH AND NORTHEAST.
ESTIMATED MINIMUM CENTRAL PRESSURE IS 1006 MB...29.71 INCHES.
Pressures for tropical cyclones that are in the formative stages - especially when located closer to the Equator - are not a good way to guage the overall structure of the storm and wind speeds. With dry air entrainment in the NW - W quadrant of the storm, combined with westerly shears - winds are ddriven downward at higher speeds in the convective band that is forming closer to the core of the system. If you back away from thinking of this as a tropical storm or hurricane, and think of it as a cluster (albeit one trying to get organized) of T-storms - what we have is the equivalent of 'downburst' winds typical of MCS systems - NOT a pressure gradient dependent wind.