Tropical Cyclone Weekly Summary #109 (August 29 - September 5, 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 #109: AUGUST 29 - SEPTEMBER 5, 1993
North Atlantic Basin:
Hurricane Emily: At the start of the summary period, Emily was moving
north-northwest with 70 kt winds. The storm made a west-northwest turn on
30 August, then it turned north on 31 August passing just east of Cape
Hatteras, North Carolina. Emily reached a peak intensity of 100 kt with a
minimum central pressure of 960 mb measured by reconaissance aircraft just
as it passed Cape Hatteras. The storm turned east-northeast on 1 September and
east on 2 September while slowly weakening. Emily stalled near 37N 58W on 3
September, then it resumed a northeastward track the next day as it rapidly
weakened to a tropical depression. At the end of the summary period, Emily
was moving northeast with 30 kt winds.
Emily affected the Outer Banks of North Carolina. The automated station at
Diamond Shoals reported a minimum pressure of 964.5 mb while in the eye at
2100 UTC 31 August. It also reported a 10-minute average sustained wind of
103 kt from 2220-2230 UTC after the eye passed. Peak gust was 128 kt at 2227
UTC. (The anemometer is 40 m above sea level. The wind record from this station
is being studied to determine how strong the surface winds were.) A 101 kt gust
was reported at Cape Hatteras, possibly from the Coast Guard Station. The exact
time is unknown. The Hatteras National Weather Service Office reported 52 kt
sustained winds with gusts to 85 kt at 2100 UTC. However, the wind recording
system was damaged at that time and higher winds may have occurred later. Min-
imum pressure at the office was 982.2 mb at 1925 UTC. The rainfall total for
the storm was 7.51 in (191 mm). Unofficial reports indicate that storm surge
in the area was as high as 8 ft, however, official measurements have not been
recieved yet. After Emily moved away from the Outer Banks, it ran over buoy
44004 located at 38.5N 70.7W. The buoy was in the eye at 1900 UTC 1 September
when it reported a minimum pressure of 969.9 mb. It also reported a 10-minute
average sustained wind of 65 kt between 1900-2000 UTC with a peak gust of 80 kt.
Emily caused moderate to locally severe damage in the Cape Hatteras from
wind and storm surge. Monetary damage figures are not complete, but early
press reports indicate that Emily caused at least 10 million dollars of damage.
There are no reports of casualties due directly to Emily, but press reports
indicate two surfers may have died in the strong surf the storm produced.
Eastern North Pacific Basin (E of 140 Deg. W):
Hurricane Jova: Tropical Depression 11E formed near 14N 97W on 29 August.
Moving west-northwest, the system reached tropical storm intensity later that
day. Jova continued west-northwest through 2 September. It reached hurricane
intensity on 31 August and a peak intensity of 115 kt the next day. Jova
turned west on 3 September. Maximum winds had decreased to 75 kt on 2 Sept-
ember, but re-intensification occured during 3 Septemebr to a secondary peak
intensity of 90 kt. Rapid weakening followed the next day as Jova moved west,
and by the end of the day the system had weakened to a tropical depression.
At the end of the summary period, Jova was continuing west with 25 kt winds.
Tropical Depression 12E: Tropical Depression 12E formed near 12N 108W on
5 September. At the end of the summary period, it was moving west with 30 kt
winds.
Central North Pacific Basin (180 Deg. W to 140 Deg. W): No tropical cyclones.
Western North Pacific Basin (W of 180 Deg. W):
Typhoon Yancy: Tropical Depression 19W formed near 20N 137E on 29 August.
Moving generally west, the system reached tropical storm intensity the next
day. Yancy reached typhoon intensity on 31 August as it turned northwest, and
rapid intensification occurred the next day while Yancy turned north. The
storm recurved northeast on 2 September as it reached a peak intensity of 130
kt about 50 miles northwest of Okinawa. Naha reported a minimum pressure of 982
mb at 0930 UTC with sustained winds of 57 kt and gusts to 79 kt. Yancy made
landfall on the Japanese island of Kyushu on 3 September with maximum sustained
winds estimated at 115-120 kt by the Joint Typhoon Warning Center. Kanoya re-
ported sustained winds of 78 kt with gusts to 129 kt at 0700 UTC and a mini-
mum pressure of 942 mb at 0800 UTC. Several other stations reported wind gusts
above typhoon force and pressures below 960 mb. Yancy continued across western
Japan later on 3 September while weakening rapidly. It dropped below typhoon
intensity early on 4 September and became extratropical later that day over
the southern Sea of Japan near 41N 137E.
Preliminary estimates are that Yancy ranks among the top five strongest
typhoons of record to hit Japan (This is still under review.). The storm
tracked across a region that had been previously hit by Typhoon Nathan, Trop-
ical Storm Ofelia, Typhoon Percy, and Typhoon Robyn. In addition, other heavy
rains had plagued the region for several weeks. Press reports indicate that 10
people were killed and heavy damage occurred, especially from flooding and
mudlsides.
Tropical Depression 20W: Tropical Depression 20W formed near 19N 130E on 5
September. At the end of the summary period, it was moving west-northwest 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.