* WHAT...Seas 9 to 11 feet.
* WHERE...Marianas Coastal Waters.
* WHEN...Until 5 AM ChST Monday.
* IMPACTS...Conditions will be hazardous to small craft.
* ADDITIONAL DETAILS...Gentle to moderate westerlies will prevail across the Marianas tonight, as a westerly monsoon surge slows. Combined seas of 8 to 11 feet are expected through tonight, to then drop a foot briefly Friday, remaining hazardous to small craft. As such, the Small Craft Advisory has been extended. Seas will rise once again this weekend as the monsoon surge strengthens.