Tropical Cyclone Weekly Summary #13 (October 27 - November 3, 1991)
JACK
This report is compiled from warnings issued by:
National Hurricane Center
Central Pacific Hurricane Center
Joint Typhoon Warning Center
Japanese Meteorological Agency
Royal Observatory of Hong Kong
Indian Meteorological Service
Reunion Meteorological Service
Mauritius Meteorological Service
(others may be added as they become available)
WEEKLY TROPICAL CYCLONE SUMMARY #13: OCTOBER 27 - NOVEMBER 3, 1991
North Atlantic Basin:
Hurricane Grace: At the start of the summary period, Grace was moving
north between the United States and Bermuda with 65 kt winds. Grace turned
east and east-southeast on 28 October, and it passed south of Bermuda early
on 29 October. Grace turned northeast on 29 October and became extratrop-
ical later that day near 34N 57W as it was absorbed into a large non-
tropical low forming to the north. Maximum winds during the storm were 65
kt. While strong winds affected Bermuda when Grace passed to the south,
these were primarily associated with the cold front from the large non-
tropical low. There are no reports of damage or casualties at this time.
Possible Unnamed Hurricane: The large non-tropical low that formed north
of Hurricane Grace moved southwest and west toward the U.S. East Coast.
Although this storm produced strong winds and high waves along parts of
the coast, the storm had no tropical characteristics at the time the damage
was being done. The storm turned southward while weakening, and by 31 Oc-
tober it had moved over the Gulf Stream. On 1 November, centralized con-
vection started to form, and a hurricane-type eye developed later that day
near 37N 67W. A reconaissance aircraft reached the system early on 2 No-
vember and measured hurricane-force winds and a pressure of 981 mb. It also
found an apparent warm core and an eyewall. The storm moved north-northeast
and weakened below hurricane intensity before passing over Nova Scotia on
2 November. It became extratropical later that day near 45N 63W. The
National Hurricane Center is currently reviewing the data to determine if
this system should be classified as an unnamed hurricane. It should be
emphasized that this storm was *not* the remnants of Grace, and that it had
*no* tropical characteristics when it most seriously affected the U.S.
East Coast.
Eastern North Pacific Basin (E of 140 Deg. W): No tropical cyclones.
Central North Pacific Basin (180 Deg. W to 140 Deg. W): No tropical cyclones.
Western North Pacific Basin (W of 180 Deg. W):
Typhoon Ruth: At the start of the summary period, Typhoon Ruth was over
Luzon moving west with 85 kt winds. Ruth weakened below typhoon intensity
as it moved northwest into the South China Sea on 28 October. Ruth re-
curved northeast on 29 October with further weakening, and it fell below
tropical storm intensity on 30 October. Ruth became extratropical near 24N
126E on 31 October. There have been no further reports of damage or cas-
ualities since the unconfirmed report of three people killed.
Typhoon Seth: Tropical Depression 26W formed near 8N 159E on 1 November.
It intensified into Tropical Storm Seth later that day as it moved west-
northwest. Further rapid strengthening ensued, and Seth reached typhoon
intensity on 2 November and 130 kt intensity on 3 November. At the end of
the summary period, Seth was moving west-northwest with 130 kt near the
island of Saipan in the Marianas.
Tropical Depression 27W: Tropical Depression 27W developed on 1 No-
vember near 11N 136E. Moving first northwest and then west, the system
maintained 30 kt winds for the rest of the summary period.
North Indian Ocean Basin:
Tropical Depression: A tropical depression formed near 11N 83E on 28 Oc-
tober. Moving northwest, the system moved over southern India the next day.
The depression maintained its identity over land until it dissipated on 31
October. Maximum winds were 25 kt.
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:
Past copies of the Tropical Cyclone Weekly Summary can be obtained via e-
mail. Please send an e-mail message if you are interested.