MODERATE SEISMICITY CONTINUES OFF COAST OF NORTHERN CALIFORNIA

SUMMARY

Happy Thanksgiving to all our U.S. readers!!!

The swarm of light to moderate earthquakes off the coast of
Northern California/So. Oregon continued unabated today with a
Ml 3.8 in the same general vicinity as earthquakes of Ml 4.0, 3.8
and 3.7 over the past 4 days. This report had expected a minor
swarm ot occur in this area at this time.

GLOBAL

The strongest earthquake in the past 24 hours was a Mw 6.2 in the Banda
Sea last night. No other earthquakes of Mb>=5 have been reported
in the world today. A number of unusual events did occur today, however
in Poland (mb 4.2); South Australia; Loyalty Islands (Mb 4.7);
D'Entrecasteaux Islands, south of New Britain (Mb 4.8) and in the Balleny
Islands south of New Zealand (Mb 4.8).

U.S./CANADA

Seismicity in the U.S./Canada region returned to relatively modest
levels today except for the region off the coast of No. California
where moderate events continued (see Summary section above). The
largest events of the day again occurred in the Gulf of Alaska near
Kodiak Island (Mb 4.4 and 3.6). No earthquakes of Ml>=3 were
recorded in Hawaii today.
In the California/Nevada region the largest event occurred in
the Hector Mine aftershock zone (Ml 3.0). The only other events
of Ml>=2 occurred in the Arvin region (Ml 2.9, 2.5) and the Geysers
(Ml 2.0).
A minor swarm of earthquake continued in the Yellowstone Park
area from it's start yesterday. No new earthquakes were located
in the eastern or Central U.S. or Canada today.
Two events (Ml 2.8, 1.6) occurred west of Vancouver Island, these
were the largest recorded in Canada today.

NEW ZEALAND/AUSTRALIA

A second earthquake in as many days was reported off the coast
of Hokitika, New Zealand, South Island by IGNS (Ml 3.7). NEIS
also reported a Mb 3.9 in the Kermadec Islands on Nov. 19 and
a small event in southern Australia today. A Mb 4.8 earthquake
was also located south of New Zealand in the Balleny Islands
on Nov. 20. This area has seen several events in the past three
days including a Mb 5.6 in the Macquarie Islands on Nov. 19.
The IGNS on-line seismogram continued to show moderate, but
diminishing activity today.

The IGNS on-line Seismometer can be found at:
http://www.gns.cri.nz/news/earthquakes/latest_drum.html

GEOMAGNETIC/SOLAR FIELDS

The geomagnetic field remained at very quiet conditions today. There
were no M- or X- class solar flares recorded.

Flare # START MAX END CLASS

For general space weather conditions see:
http://sec.noaa.gov/today.html
For Solar flare data see:
http://sec.noaa.gov/ftpdir/indices/events/20011121events.txt

TROPICAL STORMS

BANDA SEA

Tropical Cyclone 03s formed over the Banda Sea at the same time
and position (7S 128W) as the Mw 6.2 earthquake last night. Additional
seismicity in the region associated with this storm is expected over
the next two to three days with maximum event size increasing to
0.5 units over previous estimates. This storm is expected to move
into the Flores sea in the next 72 hours. For a public advisory see:

http://www.wunderground.com/auto/HurricaneSite/tropical/sp200101.public.html

SO. INDIAN OCEAN

Tropical Cyclone 04s is currently near Diego Garcia in the South
Indian Ocean. It is expect to move to the SE over then next 72 hours.
Accompanying seismicity may occur in the Carlsberg Ridge are or
south of India. For a public advisory see:

http://www.wunderground.com/auto/HurricaneSite/tropical/sp200102.public.html

WEST PACIFIC

Tropical depression 29W continued over the South China sea today
and is headed NNE about 9 knots. Little seismicity is
expected to be associated with this storm at this time. For a
public advisory see:

http://www.wunderground.com/auto/HurricaneSite/tropical/wp200102.public.html

Tropical depression 28W is currently located about 330 miles East
of Luzon and moving WSW at about 16 knots. It now appears that
28W may make landfall in the Philippines. If this occurs local
seismic enhancement is expected throughout the Philippine Islands
and south to the Northern Indonesia region. Maximum event may increase
by up to 0.5 units magnitude during the period 24 - 27 November.

For a public advisory see:

http://www.wunderground.com/auto/HurricaneSite/tropical/wp200101.public.html

TIDAL TRIGGERING (LUNAR)

Statistics have been done on many regions of the world in terms of
relationship of significant regional earthquakes with respect to lunar cycle.
Each report will summarize the most likely areas for tidal triggering
for the next day based on these statistics. It is expected
that tidal triggering will add an additional 0.5 - 1.0 units of
magnitude to events which are about to occur or will move these
events forward in time by up to seven days in the regions where
there is a statistical correlation between lunar phase and
earthquakes.

November 22 is the eighth day after the beginning of the lunar month.
Regions most likely to experience tidal triggering
on this day (With associated magnitude ranges; the percent change in
seismicity rate over background seismicity rate on this
day of the lunar month; statistical z-value and
significance level) are:

Region Magnitude range %change z-value Significance level

Pacific-Antarctic Ridge MB>=4.0 58 2.0 0.05
Central So America MB>=4.0 23 2.3 0.04
Mt ST. Helens MB>=0.0 40 3.0 0.01

Regions expected to experience reverse triggering (i.e. they are
unlikely to experience a significant event at this period of the
lunar cycle) are:

Region Magnitude range %change z-value Significance level

Siberia MB>=4.0 -37 -2.0 0.05

EARTHQUAKE LISTINGS

GLOBAL

NEW ZEALAND

O: 21Nov2001 20:37 42.8S 171.1E ML=3.7 IGNS SE of Hokitika, N.Z.
Note: (IGNS) Likely to have been felt in the Hokitika area.

O: 19Nov2001 15:22:08 30.3S 178.0W MB=3.9 NEIS KERMADEC ISL, NEW ZEALAND

O: 20Nov2001 19:29:04 62.2S 165.5E MB=4.8 NEIS BALLENY ISLANDS REGION

O: 21Nov2001 11:21:14 28.0S 135.0E ML>3.0 NEIS SOUTH AUSTRALIA

SOUTH PACIFIC ISLANDS

O: 21Nov2001 02:12:59 22.8S 169.6E MB=4.7 NEIS SE OF LOYALTY ISLANDS

O: 21Nov2001 02:06:14 9.8S 155.3E MB=4.8 NEIS D'ENTRECASTEAUX ISL REGION

O: 20Nov2001 06:06:37 10.5S 166.0E MB=4.9 NEIS SANTA CRUZ ISLANDS

ASIA

O: 20NOV2001 21:08:18 6.8S 128.9E MB=6.2 NEIS BANDA SEA
O: 21Nov2001 11:19:23 7.2S 128.0E mb=5.2 GSR BANDA SEA
Note: This event occurred simultaneous with the formation of Tropical
Cyclone 03 above the epicenter (see tropical Storms section above).

O: 20NOV2001 21:09:30 7.3S 124.0E SR=5.8 AEIC1 BANDA SEA, INDONESIA

O: 20NOV2001 14:07:50 11.1S 111.7E SR=5.0 AEIC1 S OF JAVA, INDONESIA

O: 20NOV2001 10:32:20 7.4S 129.0E SR=5.3 AEIC1 BANDA SEA, INDONESIA

O: 19Nov2001 20:29:11 32.9N 80.6E ML>3.5 NEIS XIZANG

O: 19Nov2001 19:02:43 41.2N 76.5E ML>3.5 NEIS KYRGYZ-XINJIANG BDR REG.

O: 20NOV2001 10:42:37 37.2N 135.2E MB=4.5 NEIS SEA OF JAPAN

O: 21Nov2001 10:25:40 42.3N 142.4E mb=5.0 GSR HOKKAIDO, JAPAN REGION

O: 21NOV2001 20:25:15 43.1N 143.9E Ms=4.5 GSSC HOKKAIDO, JAPAN, REGION

O: 20Nov2001 22:04:59 33.2N 143.4E MB=4.5 NEIS OFF E COAST HONSHU, JAPAN

O: 20Nov2001 20:53:52 7.0S 106.9E MB=4.7 NEIS JAWA, INDONESIA

O: 20Nov2001 19:04:39 53.7N 159.0E MB=4.3 NEIS NEAR E COAST OF KAMCHATKA

O: 20Nov2001 12:59:04 38.6N 72.6E ML>3.5 NEIS TAJIKISTAN

O: 20Nov2001 10:42:37 37.2N 135.3E MB=4.5 NEIS SEA OF JAPAN

O: 20Nov2001 21:08:18 6.9S 128.9E MW=6.2 NEIS BANDA SEA
O: 20Nov2001 10:32:26 6.4S 129.1E MB=5.0 NEIS BANDA SEA

O: 20Nov2001 08:32:45 6.1N 127.0E MB=5.2 NEIS PHILIPPINE ISLANDS REGION

CENTRAL/SOUTH AMERICA

O: 21NOV2001 05:48:01 17.0N 100.1W ML=3.7 SSN GUERRERO, MEXICO
O: 21NOV2001 05:46:46 17.0N 100.2W ML=3.4 SSN COSTA DE GUERRERO, MEXICO
O: 20NOV2001 12:17:14 16.9N 100.2W ML=3.8 SSN COSTA DE GUERRERO, MEXICO

O: 20NOV2001 21:22:24 15.6N 94.0W ML=4.2 SSN GOLFO DE TEHUANTEPEC, MEXICO

O: 21NOV2001 05:19:36 16.1N 98.1W ML=4.0 SSN COSTA GUERRERO-OAXACA, MEXICO
O: 20NOV2001 13:23:54 16.0N 97.5W ML=3.8 SSN COSTA DE OAXACA, MEXICO
O: 20NOV2001 06:56:51 16.1N 97.6W ML=3.7 SSN OAXACA, MEXICO

O: 20NOV2001 00:53:51 10.4N 71.0W Mc=3.0 ULA Miranda, Venezuela
O: 20NOV2001 05:53:30 8.8N 70.9W Mc=1.9 ULA Rangel, Venezuela

O: 20NOV2001 08:15:05 7.0N 73.3W Mc=3.5 ULA Santander, Colombia.
O: 20NOV2001 10:52:54 6.8N 73.2W Mc=3.6 ULA Santander, Colombia.

O: 21NOV2001 08:50:57 10.5N 69.6W Mc=3.7 ULA Urdaneta, Venezuela

CARIBBEAN

O: 18NOV2001 12:53:49 18.2N 67.3W ML=3.3 PRSN Western Puerto Ric
O: 19NOV2001 09:15:59 18.0N 67.1W ML=2.1 PRSN Western Puerto Rico
O: 19NOV2001 06:57:36 18.3N 67.5W ML=3.0 PRSN Mona Passage

O: 19NOV2001 05:29:17 19.7N 68.4W ML=3.6 PRSN Puerto Rico Trench

EUROPE

O: 21Nov2001 02:04:24 51.4N 16.1E MB=4.2 NEIS POLAND

O: 21NOV2001 10:45:51 40.8N 27.7E ML=3.1 KAN MARMARA SEA, TURKEY

O: 20NOV2001 16:07:45 37.5N 21.4E ML=3.7 NOA GREECE

O: 20NOV2001 20:55:23 35.2N 23.6E ML=4.0 NOA GREECE

O: 20Nov2001 16:07:52 38.4N 21.5E ML>3.5 NEIS GREECE

O: 20NOV2001 11:36:11 47.0N 0.2W ML=2.5 STR SSW SAUMUR, FRANCE

O: 20NOV2001 21:30:08 49.4N 6.8E ML=2.3 STR N MERLEBACH, FRANCE

O: 21NOV2001 03:42:11 47.3N 10.3E ML=2.5 STR AUTRICHE (OUEST D'INNSBRUCK)

O: 21NOV2001 11:35:40 36.2N 7.6W Ml=2.1 IMP STRAIT OF GIBRALTAR

O: 21NOV2001 17:10:14 48.7N 17.1E Ml=3.9 SED CZECH AND SLOVAK REPUBLIC

OCEANIA

O: 20Nov2001 19:29:04 62.2S 165.5E MB=4.8 NEIS BALLENY ISLANDS REGION

O: 19Nov2001 18:45:06 56.1S 27.4W MB=4.8 NEIS SOUTH SANDWICH ISL REGION

U.S/CANADA

CALIFORNIA/NEVADA

O: 20Nov2001 16:58:11 41.9N 125.9W MB=3.5 NEIS OFF COAST OF N CALIFORNIA
O: 21Nov2001 02:01:28 41.8N 125.9W MB=3.9 NEIS OFF COAST OF N CALIFORNIA
O: 21NOV2001 2:01:28 41.8N 125.9W ML=3.9 PNSN Off Coast of No. California
O: 21NOV2001 02:01:28 41.8N 125.8W MB=3.9 NEIS OFF COAST OF N CALIFORNIA

O: 21NOV2001 14:13:58 33.6N 118.2W ML=1.9 SCSN SE Pt. Fermin, San Pedro, CA

O: 21NOV2001 12:35:56 35.3N 118.7W ML=2.5 SCSN NE of Arvin, CA
O: 21NOV2001 9:09:25 35.3N 118.7W ML=2.9 SCSN NE of Arvin, CA
O: 21Nov2001 09:09:28 35.3N 118.7W ML=2.9 NEIS CENTRAL CALIFORNIA

O: 21NOV2001 20:00:20 38.9N 122.8W ML=2.0 NCSN N of The Geysers, CA

O: 21NOV2001 19:53:47 34.4N 118.6W ML=1.7 SCSN WNW of Valencia, CA
O: 21NOV2001 18:54:02 34.4N 118.6W ML=1.4 SCSN NW of Valencia, CA

O: 21Nov2001 18:34:02 34.7N 116.3W ML=3.0 NEIS SOUTHERN CALIFORNIA
O: 21NOV2001 18:34:02 34.7N 116.3W ML=3.0 SCSN WSW of Ludlow, CA

PACIFIC NORTHWEST/CANADA

O: 21NOV2001 18:31:07 52.8N 132.3W ML=1.7 PGC SW Sandspit BC
O: 21NOV2001 18:28:16 52.9N 132.3W ML=2.8 PGC SW Sandspit BC

ROCKY MOUNTAIN AREA

O: 21NOV2001 17:50:17 46.2N 111.8W MD=1.5 MBMG MONTANA
O: 21NOV2001 09:22:35 46.2N 111.8W MD=1.5 MBMG MONTANA

O: 20NOV2001 17:53:05 40.0N 111.9W ML=1.5 UUSN WNW of Goshen, UT

O: 20NOV2001 15:52:42 44.8N 110.9W ML=1.0 UUSN N of Madison Junc., WY
O: 20NOV2001 15:51:33 44.8N 110.9W ML=1.3 UUSN N of Madison Junc., WY
O: 20NOV2001 15:43:15 44.7N 110.9W ML=1.1 UUSN N of Madison Junc., WY
O: 20NOV2001 15:43:15 44.7N 110.9W ML=1.1 UUSN N of Madison Junc., WY
O: 20NOV2001 15:40:33 44.8N 110.9W ML=1.3 UUSN N of Madison Junc., WY
O: 20NOV2001 15:38:01 44.8N 110.9W ML=1.1 UUSN N of Madison Junc., WY
O: 20NOV2001 15:24:02 44.8N 110.9W ML=1.0 UUSN N of Madison Junc., WY
O: 20NOV2001 15:20:02 44.8N 110.8W ML=1.6 UUSN WNW of Norris Junc., WY
O: 20NOV2001 15:04:20 44.8N 110.9W ML=1.7 UUSN N of Madison Junc., WY
O: 20NOV2001 15:04:20 44.8N 110.9W ML=1.7 UUSN N of Madison Junc., WY
O: 20NOV2001 15:03:37 44.8N 110.9W ML=0.5 UUSN N of Madison Junc., WY
O: 20NOV2001 15:03:37 44.8N 110.9W ML=0.5 UUSN N of Madison Junc., WY

ALASKA

O: 21Nov2001 17:01:16 56.9N 153.3W MB=4.3 NEIS KODIAK ISL REGION, ALASKA
O: 21NOV2001 17:01:14 56.6N 153.0W ML=4.4 AEIC SSW of Kodiak, Alaska

O: 21NOV2001 19:34:53 60.8N 154.4W ML=3.4 AEIC W of Anchorage, Alaska

O: 20Nov2001 18:46:05 57.4N 156.1W ML=3.2 NEIS ALASKA PENINSULA