Tropical Cyclone Weekly Summary #107 (August 15 - 22, 1993)
JACK
National Hurricane Center
Central Pacific Hurricane Center
Naval Western Oceanography Center
Fiji Meteorological Service
Meteorological Service of New Zealand
Joint Typhoon Warning Center
Japanese Meteorological Agency
Bureau of Meteorology, Australia
Philippine Meteorological Service
Royal Observatory of Hong Kong
Indian Meteorological Department
Reunion Meteorological Service
Mauritius Meteorological Service
(others may be added as they become available)
Author's note: ja...@cloud3.met.fsu.edu is still valid, but please try to
address any comments or questions to be...@hrd-tardis.nhc.noaa.gov (assuming
the mailer stays operational!).
WEEKLY TROPICAL CYCLONE SUMMARY #107: AUGUST 15 - 22, 1993
North Atlantic Basin:
Tropical Storm Cindy: At the start of the summary period, Cindy was south
Puerto Rico moving west-northwest with 35 kt winds. Cindy continued west-
northwest and moved over the Dominican Republic on 16 August. The storm
moved into Haiti later that day and dissipated. Cindy reached a peak inten-
sity of 35 kt within a minimum central pressure of 1007 mb measured by re-
conaissance aircraft. Cindy affected the northern Windward Islands, the Lee-
ward Islands, Puerto Rico, the Dominican Republic, and Haiti. Some damage was
reported, primarily from heavy rains and mudslides. Two people were reported
killed on Martinique, while one person was reported killed in the Dominican
Republic.
Tropical Depression Five: Tropical Depression Five formed near 20N 53W on
22 August. At the end of the summary period, it was moving west with 30 kt
winds.
Special North Atlantic Update:
Tropical Storm Bret: Latest reports indicate that 200 people have died as
a result of Bret. Most of the casualties were from the flooding and mudslides
near Caracas, Venezuela.
Eastern North Pacific Basin (E of 140 Deg. W):
Hurricane Greg: At the start of the summary period, Greg was moving west-
northwest with 50 kt winds. Greg continued west-northwest the next day as it
reached hurricane intensity, and a general west-northwest to northwest track
was observed on 17 August as Greg temporarily peaked at an 85 kt intensity.
Greg turned west on 18 August and moved across Socorro Island with estimated
80 kt winds. Socorro reported 53 kt sustained winds at 1800 UTC 17 August,
but no data was reported later during the eye passage. Greg continued west
on 19 August and intensified to a peak intensity of 115 kt. Greg continued
west through the rest of the summary period while slowly weakening. At the
end of the summary period, Greg was packing 80 kt winds. There are no re-
ports of damage or casualties at this time.
Hurricane Hilary: Tropical Depression 9E formed near 13N 96W on 17 August.
Initially moving west, the system reached tropical storm intensity the next
day. Hilary reached hurricane intensity on 19 August as it turned west-north-
west, then it moved northwest on 20 August as it intensified. A peak inten-
sity of 105 kt was reached on 21 August while Hilary moved west-northwest.
Interaction with Tropical Storm Irwin caused Hilary to turn southwest and
drastically weaken on 22 August, and at the end of the summary, it was quasi-
stationary near 20N 111W with 70 kt winds.
Tropical Storm Irwin: Tropical Depression 10E formed near 15N 102W on 21
August. Moving northwest, the system reached tropical storm intensity later
that day. Irwin moved quickly northwest on 22 August near Mazanillo, Mexico.
Interaction with Hurricane Hilary caused rapid weakening, and Irwin dissi-
pated later that day near 20N 108W. The exact intensity of Irwin is spec-
ulative. Satellite intensity estimates were never higher than 45 kt. However,
there was a ship report of 64 kt near the center and two other reports of
50+ kt. In addition, Manzanillo reported 55 kt sustained winds with a minimum
pressure of 1003 mb. The peak intensity of this storm is tenatively set at
55 kt, and this may be revised later. Although Irwin affected parts of the
Mexican coast, there are no reports of damage or casualties at this time.
Central North Pacific Basin (180 Deg. W to 140 Deg. W):
Hurricane Fernanda: At the start of the summary period, Fernanda was
moving west-northwest with 90 kt winds. This was the peak intensity during
the secondary intensification. Reconaissance aircraft measured a minimum
pressure of 972 mb as the storm reached the secondary peak. Fernanda con-
tinued west-northwest through 17 August, and it dropped below hurricane
intensity on 17 August. Fernanda moved north-northwest to north on 18 August,
and the system became extratropical the next day near 30N 155W. While Fer-
nanda missed the Hawaiian Islands, surf generated by the hurricane caused
minor damage in some of the coastal regions. There are no reports of cas-
ualties.
Hurricane Keoni: At the start of the summary period, Keoni was southeast
of Johnston Island moving west with 90 kt winds and intensifying. Keoni
turned west-northwest on 16 August as it reached a peak intensity of 115 kt.
Keoni continued west-northwest the next day, then it turned northwest on
18 August. A slow weakening occurred during this time, and when Keoni
moved northwest across the International Dateline on 19 August, it was pack-
ing 65 kt winds. Although this system affected Johnston Island, there are no
reports of damage or casualties at this time.
Western North Pacific Basin (W of 180 Deg. W):
Typhoon Tasha: Tropical Depression 16W formed near 8N 132E on 15 August.
Initially moving northwest, the system turned west-northwest the next day as
it reached tropical storm intensity. Tasha continued west-northwest through
18 August as it moved past northern Luzon Island in the Philppines. Tasha
slowly strengthened during this period, and it reached typhoon intensity on
19 August as it turned west. Tasha resumed a west-northwest course on 20
August as it reached a peak intensity of 80 kt. Tasha maintained these winds
the next day as it made landfall in the Guandong province of China. The storm
continued west-northwest and dissipated over China on 22 August. Tasha af-
fected the Philippines, Hong Kong, and the southern coast of China. Heavy
rains over Luzon caused extensive flooding and mudslides, especially on the
Mt. Pinatubo ash deposits. Three people were killed in the Philippines.
Thirty people were reported injured in Hong Kong where Tasha produced trop-
ical storm force wind gusts. Further damage was reported in China, but there
are no casualty reports at this time.
Typhoon Keoni: Keoni entered the Western North Pacific on 19 August mov-
ing northwest with 65 kt winds. Keoni turned west-northwest on 20 August
while re-intensifying, and it turned northwest again the next day as it
reached a secondary peak intensity of 95 kt. Keoni turned north-northwest
on 22 August while weakening, and at the end of the summary period it was
moving north-northwest with 75 kt winds.
Tropical Storm Vernon: Tropical Depression 17W formed near 18N 154E on 21
August. Initially moving west-northwest, the system turned north-northwest
the next day as it reached tropical storm intensity. At then end of the sum-
mary period, Vernon was moving north-northwest with 40 kt winds.
Tropical Depression 18W: Tropical Depression 18W formed near 12N 125E on
22 August. At the end of the summary period, it was moving west with 30 kt
winds.
North Indian Ocean Basin: No tropical cyclones.
South Indian Ocean Basin (W of 135 Deg. E): No tropical cyclones.
South Pacific Ocean Basin (E of 135 Deg. E): No tropical cyclones.
Disclaimer: While an effort has been made to make sure this information is
accurate as possible, it was drawn from operational warnings that may not
always agree with the best track information published after the storm is
over. Please address any questions or comments by e-mail to Jack Beven at
Internet address:
be...@hrd-tardis.nhc.noaa.gov (preferrable)
or
ja...@cloud3.met.fsu.edu (still good for now)
Past copies of the Tropical Cyclone Weekly Summary can be obtained via e-
mail. Please send an e-mail message if you are interested.