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Northern Mariana Islands alert stream

8 active alerts right now, 2 severe or extreme. Weather, flood, heat, fire, wind, marine, air and quakes from NWS, USGS and Open-Meteo, refreshed every 10 minutes.

Air quality (state centre)16Good
Severe or extreme2
Counties affected0
FeedsJSON · RSS
A striking view of lightning illuminating dark clouds above a tropical ocean landscape.
Photo: Balazs Simon / Pexels

Active alerts

Newest and most severe first. Source on every card.

SevereFloodingends 2026-10-04

Flood Watch · Tinian; Saipan

Flood Watch issued October 1 at 11:11PM ChST until October 5 at 4:00AM ChST by NWS Tiyan GU

What to do

You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued.

MissionSandbag, check a drain, or clear a storm grate near youBlocked street drains are the top cause of nuisance street flooding. One cleared grate protects a block. · on ClimateChallenge.com
NWS Tiyan GUSource →
SevereTropicalends in 5 h

Tropical Storm Warning · Tinian; Saipan

Tropical Storm Warning issued October 1 at 9:22PM ChST by NWS Tiyan GU

What to do

Stay indoors during heavy rain and tropical storm-force wind conditions associated with Tropical Storm Choi-wan (26W). Heed the advice of your local emergency managers and officials, and continue to monitor forecasts by the National Weather Service office in Tiyan, Guam. Remain in sturdy shelter until the all- clear is given. Preparations for Tropical Storm Choi-wan should be complete, or rapidly rushed to completion. Take small loose object indoors. Remain in suitable shelter. If no concrete s

MissionBuild or restock a 72-hour kit and post the listFEMA's standard is three days of water, food and medicine per person. · on ClimateChallenge.com
NWS Tiyan GUSource →
ModerateFloodingends 2026-10-05

Coastal Flood Watch · Tinian; Saipan

Coastal Flood Watch issued October 1 at 8:43PM ChST until October 5 at 10:00PM ChST by NWS Tiyan GU

What to do

Rip currents will be life threatening. Inexperienced swimmers should remain out of the water due to dangerous surf conditions. If caught in a rip current, relax and float. Don't swim against the current. If able, swim in a direction following the shoreline. If unable to escape, face the shore and call or wave for help.

MissionSandbag, check a drain, or clear a storm grate near youBlocked street drains are the top cause of nuisance street flooding. One cleared grate protects a block. · on ClimateChallenge.com
NWS Tiyan GUSource →
ModerateMarine & coastends 2026-10-04

Rip Current Statement · Tinian; Saipan

Rip Current Statement issued October 1 at 8:43PM ChST until October 5 at 4:00AM ChST by NWS Tiyan GU

What to do

Rip currents will be life threatening. Inexperienced swimmers should remain out of the water due to dangerous surf conditions. If caught in a rip current, relax and float. Don't swim against the current. If able, swim in a direction following the shoreline. If unable to escape, face the shore and call or wave for help.

MissionShoreline cleanup before the next high tideA standard bag of litter is ~4 kg kept out of the water (Ocean Conservancy). · on ClimateChallenge.com
NWS Tiyan GUSource →
ModerateMarine & coastends 2026-10-04

Rip Current Statement · Guam; Rota

Rip Current Statement issued October 1 at 8:43PM ChST until October 5 at 4:00AM ChST by NWS Tiyan GU

What to do

Rip currents will be life threatening. Inexperienced swimmers should remain out of the water due to dangerous surf conditions. If caught in a rip current, relax and float. Don't swim against the current. If able, swim in a direction following the shoreline. If unable to escape, face the shore and call or wave for help.

MissionShoreline cleanup before the next high tideA standard bag of litter is ~4 kg kept out of the water (Ocean Conservancy). · on ClimateChallenge.com
NWS Tiyan GUSource →
ModerateHigh windends 2026-10-03

Wind Advisory · Guam; Rota

Wind Advisory issued October 1 at 2:52PM ChST until October 4 at 4:00AM ChST by NWS Tiyan GU

What to do

Winds this strong can make driving difficult, especially for high profile vehicles. Use extra caution when driving on roads with no center barriers, as well as when passing high profile vehicles. Secure loose objects outdoors, as well as canopies. These winds may move light objects.

MissionSecure loose yard items and photograph what you tied downFlying debris causes most wind-event property damage. · on ClimateChallenge.com
NWS Tiyan GUSource →
MinorMarine & coastends 2026-10-04

High Surf Advisory · Tinian; Saipan

High Surf Advisory issued October 1 at 8:43PM ChST until October 5 at 4:00AM ChST by NWS Tiyan GU

What to do

Rip currents will be life threatening. Inexperienced swimmers should remain out of the water due to dangerous surf conditions. If caught in a rip current, relax and float. Don't swim against the current. If able, swim in a direction following the shoreline. If unable to escape, face the shore and call or wave for help.

MissionShoreline cleanup before the next high tideA standard bag of litter is ~4 kg kept out of the water (Ocean Conservancy). · on ClimateChallenge.com
NWS Tiyan GUSource →
MinorMarine & coastends 2026-10-04

High Surf Advisory · Guam; Rota

High Surf Advisory issued October 1 at 8:43PM ChST until October 5 at 4:00AM ChST by NWS Tiyan GU

What to do

Rip currents will be life threatening. Inexperienced swimmers should remain out of the water due to dangerous surf conditions. If caught in a rip current, relax and float. Don't swim against the current. If able, swim in a direction following the shoreline. If unable to escape, face the shore and call or wave for help.

MissionShoreline cleanup before the next high tideA standard bag of litter is ~4 kg kept out of the water (Ocean Conservancy). · on ClimateChallenge.com
NWS Tiyan GUSource →

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