Might check this out.
TROPICAL WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
2205 UTC MON MAY 29 2006 (edited~danielw)

...SPECIAL FEATURE...

TROPICAL STORM ALETTA IS ESTIMATED NEAR 15.9N 102.1W AT 2100 UTC. THIS POSITION IS ABOUT 120 MILES...195 KM...SOUTH OF
ZIHUATANEJO MEXICO. ALETTA IS MOVING W AT 5 KT. ESTIMATED MINIMUM CENTRAL PRESSURE IS 1004 MB. MAXIMUM SUSTAINED WIND SPEED IS 35 KT WITH GUSTS TO 45 KT.
SCATTERED MODERATE TO STRONG CONVECTION WITHIN 150 NM ONLY OVER SE QUADRANT.
SHEAR IS EXPECTED TO BRIEFLY WEAKEN AND STRENGTHEN AGAIN IN ABOUT 36 HOURS SO THE ADVISORY MENTIONS A SLIGHT INCREASE FOR A DAY OR SO...WITHIN A WEAKENING TREND THEREAFTER.
SEE LATEST NHC FORECAST/ADVISORY UNDER AWIPS/WMO HEADERS MIATCMEP1/WTPZ21 KNHC FOR MORE DETAILS.

http://www.srh.noaa.gov/data/NHC/TWDEP