NWS 2pm Friday UPDATE: Tropical Depression 23W Moving West Toward Anatahan; No Watches or Warnings


Guam – A tropical disturbance east of the Marianas was upgraded overnight to Tropical Depression 23W.

As of  2pm Friday update placed the system about 205 miles north-east of Guam.

Tropical Depression 23W is expected to pass over Anatahan  and its not expected to become a Tropical Storm until after it passes the Mariana islands.

There are no watches or warnings for this system at this time.

READ the 2pm Friday NWS Update on Tropical Depression 23W HERE


READ the 2pm Friday NWS Special Weather Statement for the Marianas below:

Bulletin – Ttropical Depression 23W Advisory number 3  – National Weather Service Tiyan Guam 2pm ChST Friday Oct 4 2013

…Tropical Depression 23W moving west toward Anatahan…

Watches and Warnings: – none. 

Summary of 1pm ChST information:

Location…16.2n 146.0e

about  75 miles north-northeast of Saipan
about 105 miles south of Alamagan
about 130 miles south of Pagan 
about 205 miles north-northeast of Guam

* maximum sustained winds…35 mph
* present movement…wnw or 285 degrees at 10 mph

Discussion and Outlook:

At 1pm ChST  the center of Tropical Depression 23W was located by satellite near latitude 16.2 north and longitude  146.0 east.

Tropical Depression 23W is moving west at 10 mph…and is expected to maintain this motion over the next 24 hours with a slight increase in forward speed. this track will take tropical depression 23W just south of anatahan this afternoon.

Maximum sustained winds are 35 mph. Tropical Depression 23w is expected to slowly intensify…and could become a tropical storm a Tropical Stormtonight after passing the northern mariana islands.

The next scheduled advisory will be issued by the National Weather Service at 8 pm this evening.


801 am chst fri oct 4 2013  guz003>005-pmz153-154-040800- tinian-saipan-northern marianas-tinian coastal waters-saipan  coastal waters- 801 am chst fri oct 4 2013  ...tropical depression 23w heading for the northern marianas...  tropical depression 23w is centered northeast of saipan near 16.0n  147.4e.  this is about 100 miles northeast of saipan         about 135 miles south-southeast of alamagan and         about 160 miles south-southeast of pagan.  tropical depression 23w is moving west at 9 mph toward the northern  marianas.  for the islands of alamagan and pagan...numerous showers with  locally heavy downpours and isolated thunderstorms are expected near  daybreak and will last into the evening. sustained winds of 20 to 30  mph with gusts to 40 mph in showers are likely. rainfall amounts of  3 to 5 inches are possible over these islands.  for the islands of tinian...saipan and agrihan...scattered showers  and isolated thunderstorms are expected by mid morning and will  persist through the afternoon. sustained winds of 15 to 20 mph with  gusts to 30 mph in showers are likely. rainfall amounts of 2 to 4  inches are possible over these islands.  inter-island travel in small boats is not recommended north of rota  for the next couple of days. 23w is expected to intensify slowly  during its passage across the cnmi. stay informed on this developing  weather situation. keep abreast of the latest forecasts and listen  for any further statements and tropical cyclone public advisories  issued by the national weather service or your local emergency  management office.  $$  chan/middlebrooke