Northern Mariana Islands Recent Status Report, Updates, and Information Releases
Friday, September 5, 2008 08:04 MPT (Thursday, September 4, 2008 22:04 UTC)
ANATAHAN VOLCANO (CAVW#0804-20=)
16.35°N 145.67°E, Summit Elevation 2592 ft (790 m)
Volcano Alert Level: ADVISORY
Aviation Color Code: YELLOW
Report prepared by the U.S. Geological Survey.
Seismicity remains low with periodic low-amplitude tremor bursts lasting 30 seconds to 30 minutes occurring this week. No plumes have been reported.
During times of northerly winds, the Anatahan plume, if present, could be directed towards the CNMI and Guam. If this happens, residents may notice hazy air conditions and smell sulfur. The Emergency Management Office (EMO) of the CNMI government will issue volcanic haze and sulfur advisories if appropriate.
Access to the island may be restricted by the CNMI government. Contact the EMO to get the latest information.
USGS contact information: duty scientist (808) 967-8815 http://volcano.wr.usgs.gov/cnmistatus.php
Friday, August 29, 2008 10:07 MPT (Friday, August 29, 2008 00:07 UTC)
ANATAHAN VOLCANO (CAVW#0804-20=)
16.35°N 145.67°E, Summit Elevation 2592 ft (790 m)
Volcano Alert Level: ADVISORY
Aviation Color Code: YELLOW
Report prepared by the U.S. Geological Survey.
Seismicity remains low with periodic low-amplitude tremor bursts lasting 30 seconds to 60 minutes occurring this week. No plumes have been reported.
During times of northerly winds, the Anatahan plume, if present, could be directed towards the CNMI and Guam. If this happens, residents may notice hazy air conditions and smell sulfur. The Emergency Management Office (EMO) of the CNMI government will issue volcanic haze and sulfur advisories if appropriate.
Access to the island may be restricted by the CNMI government. Contact the EMO to get the latest information.
USGS contact information: duty scientist (808) 967-8815 http://volcano.wr.usgs.gov/cnmistatus.php
Friday, August 22, 2008 09:08 MPT (Thursday, August 21, 2008 23:08 UTC)
ANATAHAN VOLCANO (CAVW#0804-20=)
16.35°N 145.67°E, Summit Elevation 2592 ft (790 m)
Volcano Alert Level: ADVISORY
Aviation Color Code: YELLOW
Report prepared by the U.S. Geological Survey.
Seismicity remains low though occasional low-amplitude tremor bursts lasting minutes occasionally occur. No plumes have been reported.
On Aug. 20 there were a few low-amplitude tremor bursts lasting ~2 minutes.
On Aug. 21 there were two episodes of volcanic tremor - ~5 minutes of tremor starting at 16:15 UTC and ~50 minutes of tremor starting at 16:50 UTC. Subsequent seismicity returned to background levels.
During times of northerly winds, the Anatahan plume, if present, could be directed towards the CNMI and Guam. If this happens, residents may notice hazy air conditions and smell sulfur. The Emergency Management Office (EMO) of the CNMI government will issue volcanic haze and sulfur advisories if appropriate.
Access to the island may be restricted by the CNMI government. Contact the EMO to get the latest information.
USGS contact information: duty scientist (808) 967-8815 http://volcano.wr.usgs.gov/cnmistatus.php
Sunday, August 17, 2008 04:53 MPT (Saturday, August 16, 2008 18:53 UTC)
ANATAHAN VOLCANO (CAVW#0804-20=)
16.35°N 145.67°E, Summit Elevation 2592 ft (790 m)
Volcano Alert Level: ADVISORY
Aviation Color Code: YELLOW
Report prepared by the U.S. Geological Survey.
On Aug. 12, the Aviation color code was lowered from Orange to Yellow and the Alert level from Watch to Advisory at Anatahan volcano. Seismicity remains low though occasional low-amplitude tremor bursts lasting minutes occasionally occur. No plumes have been reported.
On Aug. 13, the CNMI Emergency Management Office released a statement concerning haze in the area. The haze, however, was not a result of Anatahan activity.
During times of northerly winds, the Anatahan plume, if present, could be directed towards the CNMI and Guam. If this happens, residents may notice hazy air conditions and smell sulfur. The Emergency Management Office (EMO) of the CNMI government will issue volcanic haze and sulfur advisories if appropriate.
Access to the island may be restricted by the CNMI government. Contact the EMO to get the latest information.
USGS contact information: duty scientist (808) 967-8815 http://volcano.wr.usgs.gov/cnmistatus.php
Tuesday, August 12, 2008 09:43 MPT (Monday, August 11, 2008 23:43 UTC)
ANATAHAN VOLCANO (CAVW#0804-20=)
16.35°N 145.67°E, Summit Elevation 2592 ft (790 m)
Volcano Alert Level: ADVISORY
Aviation Color Code: YELLOW
Report prepared by the U.S. Geological Survey.
The Aviation color code is being lowered from Orange to Yellow and the Alert level from Watch to Advisory at Anatahan volcano. Seismicity remains low. Photographs from a visit to the volcano Aug. 8 show a low-level (6,000-7,000 ft above sea level) relatively passive steam plume rising above the island. Occasional SO2 plumes have been seen over the past few weeks by satellite, but no ash has been identified.
During times of northerly winds, the Anatahan plume, if present, could be directed towards the CNMI and Guam. If this happens, residents may notice hazy air conditions and smell sulfur. The Emergency Management Office (EMO) of the CNMI government will issue volcanic haze and sulfur advisories if appropriate.
Access to the island may be restricted by the CNMI government. Contact the EMO to get the latest information.
USGS contact information: duty scientist (808) 967-8815 http://volcano.wr.usgs.gov/cnmistatus.php
Monday, August 11, 2008 08:08 MPT (Sunday, August 10, 2008 22:08 UTC)
ANATAHAN VOLCANO (CAVW#0804-20=)
16.35°N 145.67°E, Summit Elevation 2592 ft (790 m)
Volcano Alert Level: WATCH
Aviation Color Code: ORANGE
Report prepared by the U.S. Geological Survey.
Seismicity at Anatahan Volcano continues at low levels similar to the past few days. A burst of tremor lasting 30 minutes occurred at ~12:00 UTC. No plume was observed in clear satellite views this morning.
During times of northerly winds, the Anatahan plume, if present, could be directed towards the CNMI and Guam. If this happens, residents may notice hazy air conditions and smell sulfur. The Emergency Management Office (EMO) of the CNMI government will issue volcanic haze and sulfur advisories if appropriate.
Access to the island may be restricted by the CNMI government. Contact the EMO to get the latest information.
USGS contact information: duty scientist (808) 967-8815 http://volcano.wr.usgs.gov/cnmistatus.php
Sunday, August 10, 2008 08:11 MPT (Saturday, August 9, 2008 22:11 UTC)
ANATAHAN VOLCANO (CAVW#0804-20=)
16.35°N 145.67°E, Summit Elevation 2592 ft (790 m)
Volcano Alert Level: WATCH
Aviation Color Code: ORANGE
Report prepared by the U.S. Geological Survey.
Seismicity at Anatahan Volcano continues at low levels similar to the past two days. No plumes have been observed in satellite views today. Low-level steam and minor ash emissions observed yesterday, are likely occurring.
During times of northerly winds, the Anatahan plume, if present, could be directed towards the CNMI and Guam. If this happens, residents may notice hazy air conditions and smell sulfur. The Emergency Management Office (EMO) of the CNMI government will issue volcanic haze and sulfur advisories if appropriate.
Access to the island may be restricted by the CNMI government. Contact the EMO to get the latest information.
USGS contact information: duty scientist (808) 967-8815 http://volcano.wr.usgs.gov/cnmistatus.php
Saturday, August 9, 2008 08:16 MPT (Friday, August 8, 2008 22:16 UTC)
ANATAHAN VOLCANO (CAVW#0804-20=)
16.35°N 145.67°E, Summit Elevation 2592 ft (790 m)
Volcano Alert Level: WATCH
Aviation Color Code: ORANGE
Report prepared by the U.S. Geological Survey.
Seismicity at Anatahan volcano continues at low levels similar to yesterday. A field crew on the island yesterday reported observing a steam and dilute ash plume rising to 6,000 feet above sea level. No SO2 cloud was observed in satellite views over the island today.
During times of northerly winds, the Anatahan plume, if present, could be directed towards the CNMI and Guam. If this happens, residents may notice hazy air conditions and smell sulfur. The Emergency Management Office (EMO) of the CNMI government will issue volcanic haze and sulfur advisories if appropriate.
Access to the island may be restricted by the CNMI government. Contact the EMO to get the latest information.
USGS contact information: duty scientist (808) 967-8815 http://volcano.wr.usgs.gov/cnmistatus.php
Friday, August 8, 2008 07:18 MPT (Thursday, August 7, 2008 21:18 UTC)
ANATAHAN VOLCANO (CAVW#0804-20=)
16.35°N 145.67°E, Summit Elevation 2592 ft (790 m)
Volcano Alert Level: WATCH
Aviation Color Code: ORANGE
Report prepared by the U.S. Geological Survey.
Seismicity at Anatahan volcano has decreased significantly over the past 24 hours. A small SO2 plume was observed in satellite views this morning. No steam or ash plumes have been observed in satellite over the past few days. A field crew is on the island and their observations will be included in later reports.
During times of northerly winds, the Anatahan plume, if present, could be directed towards the CNMI and Guam. If this happens, residents may notice hazy air conditions and smell sulfur. The Emergency Management Office (EMO) of the CNMI government will issue volcanic haze and sulfur advisories if appropriate.
Access to the island may be restricted by the CNMI government. Contact the EMO to get the latest information.
USGS contact information: duty scientist (808) 967-8815 http://volcano.wr.usgs.gov/cnmistatus.php
Thursday, August 7, 2008 07:19 MPT (Wednesday, August 6, 2008 21:19 UTC)
ANATAHAN VOLCANO (CAVW#0804-20=)
16.35°N 145.67°E, Summit Elevation 2592 ft (790 m)
Volcano Alert Level: WATCH
Aviation Color Code: ORANGE
Report prepared by the U.S. Geological Survey.
Seismic unrest at Anatahan volcano continues and is similar to levels observed yesterday. A small SO2 plume traveling to the northeast of the volcano was observed in satellite views this morning.
During times of northerly winds, the Anatahan plume, if present, could be directed towards the CNMI and Guam. If this happens, residents may notice hazy air conditions and smell sulfur. The Emergency Management Office (EMO) of the CNMI government will issue volcanic haze and sulfur advisories if appropriate.
Access to the island may be restricted by the CNMI government. Contact the EMO to get the latest information.
USGS contact information: duty scientist (808) 967-8815 http://volcano.wr.usgs.gov/cnmistatus.php
Wednesday, August 6, 2008 05:55 MPT (Tuesday, August 5, 2008 19:55 UTC)
ANATAHAN VOLCANO (CAVW#0804-20=)
16.35°N 145.67°E, Summit Elevation 2592 ft (790 m)
Volcano Alert Level: WATCH
Aviation Color Code: ORANGE
Report prepared by the U.S. Geological Survey.
Seismic tremor at Anatahan volcano continues and is similar to levels observed yesterday. Satellite views show no unusual activity.
During times of northerly winds, the Anatahan plume, if present, could be directed towards the CNMI and Guam. If this happens, residents may notice hazy air conditions and smell sulfur. The Emergency Management Office (EMO) of the CNMI government will issue volcanic haze and sulfur advisories if appropriate.
Access to the island may be restricted by the CNMI government. Contact the EMO to get the latest information.
USGS contact information: duty scientist (808) 967-8815 http://volcano.wr.usgs.gov/cnmistatus.php
Tuesday, August 5, 2008 07:20 MPT (Monday, August 4, 2008 21:20 UTC)
ANATAHAN VOLCANO (CAVW#0804-20=)
16.35°N 145.67°E, Summit Elevation 2592 ft (790 m)
Volcano Alert Level: WATCH
Aviation Color Code: ORANGE
Report prepared by the U.S. Geological Survey.
Seismic tremor at Anatahan volcano continues at slightly lower levels than yesterday. Satellite views have been obscured by cloud cover since yesterday.
During times of northerly winds, the Anatahan plume, if present, could be directed towards the CNMI and Guam. If this happens, residents may notice hazy air conditions and smell sulfur. The Emergency Management Office (EMO) of the CNMI government will issue volcanic haze and sulfur advisories if appropriate.
Access to the island may be restricted by the CNMI government. Contact the EMO to get the latest information.
USGS contact information: duty scientist (808) 967-8815 http://volcano.wr.usgs.gov/cnmistatus.php
Monday, August 4, 2008 05:52 MPT (Sunday, August 3, 2008 19:52 UTC)
ANATAHAN VOLCANO (CAVW#0804-20=)
16.35°N 145.67°E, Summit Elevation 2592 ft (790 m)
Volcano Alert Level: WATCH
Aviation Color Code: ORANGE
Report prepared by the U.S. Geological Survey.
Seismic tremor continues at Anatahan at about the same levels as yesterday. Satellite data shows a small plume -- most likely steam -- drifting to the northwest.
During times of northerly winds, the Anatahan plume, if present, could be directed towards the CNMI and Guam. If this happens, residents may notice hazy air conditions and smell sulfur. The Emergency Management Office (EMO) of the CNMI government will issue volcanic haze and sulfur advisories if appropriate.
Access to the island may be restricted by the CNMI government. Contact the EMO to get the latest information.
USGS contact information: duty scientist (808) 967-8815 http://volcano.wr.usgs.gov/cnmistatus.php
Sunday, August 3, 2008 07:54 MPT (Saturday, August 2, 2008 21:54 UTC)
ANATAHAN VOLCANO (CAVW#0804-20=)
16.35°N 145.67°E, Summit Elevation 2592 ft (790 m)
Volcano Alert Level: WATCH
Aviation Color Code: ORANGE
Report prepared by the U.S. Geological Survey.
Seismic tremor persists at Anatahan. Occasional plumes perhaps as high as 5,000 ft - mainly steam but possibly with some ash - are seen in satellite data.
During times of northerly winds, the Anatahan plume, if present, could be directed towards the CNMI and Guam. If this happens, residents may notice hazy air conditions and smell sulfur. The Emergency Management Office (EMO) of the CNMI government will issue volcanic haze and sulfur advisories if appropriate.
Access to the island may be restricted by the CNMI government. Contact the EMO to get the latest information.
USGS contact information: duty scientist (808) 967-8815 http://volcano.wr.usgs.gov/cnmistatus.php
