Saipan, Northern Mariana Islands
Regional Weather Alerts
| Alert: | Rip Current Statement |
| Area(s): | Guam; Rota; Tinian; Saipan |
| Effective: | 2026-08-23 @ 1:17 pm -> 2026-08-24 @ 1:00 am |
| Onset: | 2026-08-23 @ 1:17 pm -> 2026-08-24 @ 1:00 am |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Tiyan GU on 2026-08-23 @ 1:17 pm |
| Headline: | Rip Current Statement issued August 24 at 4:17AM ChST until August 24 at 4:00PM ChST by NWS Tiyan GU |
| Description: |
* WHAT...Large breaking waves of 7 to 10 feet and dangerous rip currents. * WHERE...West-facing reefs of the Marianas. * WHEN...Until 4 PM ChST this afternoon. * IMPACTS...Dangerous swimming and surfing conditions and localized beach erosion. Rip currents can sweep even the best swimmers away from shore into deeper water. * ADDITIONAL DETAILS...Significant southwesterly swell driven by the monsoon pattern and Tropical Depression 19W, well north- northwest of Yap, is producing hazardous surf and dangerous rip currents along west-facing reefs through this afternoon. |
| Alert: | High Surf Advisory |
| Area(s): | Guam; Rota; Tinian; Saipan |
| Effective: | 2026-08-23 @ 1:17 pm -> 2026-08-24 @ 1:00 am |
| Onset: | 2026-08-23 @ 1:17 pm -> 2026-08-24 @ 1:00 am |
| Severity: | Minor |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Tiyan GU on 2026-08-23 @ 1:17 pm |
| Headline: | High Surf Advisory issued August 24 at 4:17AM ChST until August 24 at 4:00PM ChST by NWS Tiyan GU |
| Description: |
* WHAT...Large breaking waves of 7 to 10 feet and dangerous rip currents. * WHERE...West-facing reefs of the Marianas. * WHEN...Until 4 PM ChST this afternoon. * IMPACTS...Dangerous swimming and surfing conditions and localized beach erosion. Rip currents can sweep even the best swimmers away from shore into deeper water. * ADDITIONAL DETAILS...Significant southwesterly swell driven by the monsoon pattern and Tropical Depression 19W, well north- northwest of Yap, is producing hazardous surf and dangerous rip currents along west-facing reefs through this afternoon. |
| Alert: | Hydrologic Outlook |
| Area(s): | Guam, GU; Rota, MP; Saipan, MP; Tinian, MP |
| Effective: | 2026-08-23 @ 3:44 am -> 2026-08-24 @ 5:00 am |
| Onset: | 2026-08-23 @ 3:44 am |
| Severity: | Unknown |
| Certainty: | Possible |
| Urgency: | Future |
| Issued By: | NWS Tiyan GU on 2026-08-23 @ 3:44 am |
| Headline: | Hydrologic Outlook issued August 23 at 6:44PM ChST by NWS Tiyan GU |
| Description: |
ESFGUM This Hydrologic Outlook is for Guam, Rota, Tinian, and Saipan. A reinvigorated monsoon trough with a potential embedded tropical disturbance will likely develop in the area and bring periods of heavy rainfall to the Marianas starting midweek. Between Wednesday and Friday, early ensemble guidance suggests 4 to 6 inches with a low probability of up to 10 inches for Guam and Rota, and 3 to 5 inches with a low probability of up to 8 inches for Saipan and Tinian. Heavy showers will moisten soils throughout the event and increase potential for mudslides. Residents of the Marianas need to closely monitor this developing situation as flood watches, advisories and flash flood warnings could be issued later. If living near streams and rivers, prepare to move items away from stream and river banks. Make sure storm drains nearby are not clogged, especially If living at low-lying areas. |
| Alert: | Tropical Cyclone Local Statement |
| Area(s): | Tinian; Saipan |
| Effective: | 2026-08-21 @ 7:44 pm -> 2026-08-22 @ 3:45 am |
| Onset: | 2026-08-21 @ 7:44 pm -> 2026-08-24 @ 5:00 am |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Tiyan GU on 2026-08-21 @ 7:44 pm |
| Headline: | Tropical Cyclone Local Statement issued August 22 at 10:44AM ChST until August 24 at 8:00PM ChST by NWS Tiyan GU |
| Description: |
...TYPHOON SAUDEL INTENSIFYING RAPIDLY SOUTHEAST OF AGRIHAN... .NEW INFORMATION... Damaging winds are imminent or occurring in Alamagan, Pagan and Agrihan. .AREAS AFFECTED... This local statement provides important information and recommended actions for people in the Northern Marianas. .WATCHES/WARNINGS... A Typhoon Warning remains in effect for Pagan and Agrihan. Typhoon conditions, including damaging winds of 74 mph or more, are imminent or occurring. A Tropical Storm Warning and a Typhoon Watch remain in effect for Alamagan. A Tropical Storm Warning in conjunction with a Typhoon Watch means that tropical storm conditions, including damaging winds of 39 to 73 mph, are imminent or occurring, and typhoon conditions, including damaging winds of 74 mph or more, are possible in the unlikely event that Typhoon Saudel moves far enough west of its forecast track. .STORM INFORMATION... At 8 AM ChST...the center of Typhoon Saudel (17W) was located near latitude 17.5N...longitude 146.9E. This was about 70 miles east of Alamagan. Storm motion was northwest, 325 degrees, at 15 mph. Storm intensity was 90 mph. .SITUATION OVERVIEW... Tinian and Saipan should soon receive the all clear if they haven't already. Typhoon Saudel is nearly atop Alamagan, Pagan, and Agrihan. |