IEM VTEC Product Browser
This application allows easy navigation of National Weather Service issued products with Valid Time Event Coding (VTEC).
13 Nov 2024 Update: The tool was updated to use non-hash link style URLs. A shim is in place to translate the old URLs to the new ones, so nothing should be broken (famous last words). This was done to allow the HTML5 History API to provide a better user experience.
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- Event Info: Details of the selected event.
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2025 [PGUM] GUAM Small Craft (SC) Advisory (Y) Number 29
Listing of Counties/Parishes/Zones Included in Product
RADAR Composite at Issuance Time
Storm Based Warning History
472 WHGM70 PGUM 300618 MWWGUM URGENT - MARINE WEATHER MESSAGE National Weather Service Tiyan GU 418 PM ChST Sun Mar 30 2025 PMZ151>154-302000- /O.NEW.PGUM.SC.Y.0029.250330T0800Z-250330T2000Z/ Guam Coastal Waters-Rota Coastal Waters-Tinian Coastal Waters- Saipan Coastal Waters- 418 PM ChST Sun Mar 30 2025 ...SMALL CRAFT ADVISORY IN EFFECT FROM 6 PM THIS EVENING TO 6 AM CHST MONDAY... * WHAT...East winds 20 kt with frequent gusts around 25 kt. * WHERE...Marianas Coastal Waters. * WHEN...From 6 PM this evening to 6 AM ChST Monday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid boating in hazardous conditions. && $$ IC
548 WHGM70 PGUM 301811 MWWGUM URGENT - MARINE WEATHER MESSAGE National Weather Service Tiyan GU 411 AM ChST Mon Mar 31 2025 PMZ151>154-310700- /O.EXT.PGUM.SC.Y.0029.000000T0000Z-250331T0700Z/ Guam Coastal Waters-Rota Coastal Waters-Tinian Coastal Waters- Saipan Coastal Waters- 411 AM ChST Mon Mar 31 2025 ...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 5 PM CHST THIS AFTERNOON... * WHAT...East winds 15 to 20 kt with frequent gusts up to 30 kt. * WHERE...Marianas Coastal Waters. * WHEN...Until 5 PM ChST this afternoon. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid boating in hazardous conditions. && $$ Slagle
030 WHGM70 PGUM 310601 MWWGUM URGENT - MARINE WEATHER MESSAGE National Weather Service Tiyan GU 401 PM ChST Mon Mar 31 2025 PMZ151>154-311900- /O.EXT.PGUM.SC.Y.0029.000000T0000Z-250331T1900Z/ Guam Coastal Waters-Rota Coastal Waters-Tinian Coastal Waters- Saipan Coastal Waters- 401 PM ChST Mon Mar 31 2025 ...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 5 AM CHST TUESDAY... * WHAT...East winds 15 to 20 kt with frequent gusts to 30 kt. * WHERE...Marianas Coastal Waters. * WHEN...Until 5 AM ChST Tuesday. * IMPACTS...Conditions will be hazardous to small craft. * ADDITIONAL DETAILS...The Small Craft Advisory was extended based on surface observations continuing to show frequent gusts in the 25 to 30 knot range, as well as latest scatterometry data indicating an area of fresh to strong trade winds just east of Marianas coastal waters, which will continue to generate choppy sea conditions hazardous to small craft. Model guidance points to a gradual decrease in wind speeds late overnight through Tuesday, which should allow seas to relax below hazardous levels. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid boating in hazardous conditions. && $$ DeCou
812 WHGM70 PGUM 311749 MWWGUM URGENT - MARINE WEATHER MESSAGE National Weather Service Tiyan GU 349 AM ChST Tue Apr 1 2025 PMZ151>154-311900- /O.CAN.PGUM.SC.Y.0029.000000T0000Z-250331T1900Z/ Guam Coastal Waters-Rota Coastal Waters-Tinian Coastal Waters- Saipan Coastal Waters- 349 AM ChST Tue Apr 1 2025 ...SMALL CRAFT ADVISORY IS CANCELLED... Winds have diminished and are no longer hazardous to small craft. $$ Slagle
Permalink to 202503300618-PGUM-WHGM70-MWWGUM
472 WHGM70 PGUM 300618 MWWGUM URGENT - MARINE WEATHER MESSAGE National Weather Service Tiyan GU 418 PM ChST Sun Mar 30 2025 PMZ151>154-302000- /O.NEW.PGUM.SC.Y.0029.250330T0800Z-250330T2000Z/ Guam Coastal Waters-Rota Coastal Waters-Tinian Coastal Waters- Saipan Coastal Waters- 418 PM ChST Sun Mar 30 2025 ...SMALL CRAFT ADVISORY IN EFFECT FROM 6 PM THIS EVENING TO 6 AM CHST MONDAY... * WHAT...East winds 20 kt with frequent gusts around 25 kt. * WHERE...Marianas Coastal Waters. * WHEN...From 6 PM this evening to 6 AM ChST Monday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid boating in hazardous conditions. && $$ IC
Permalink to 202503301811-PGUM-WHGM70-MWWGUM
548 WHGM70 PGUM 301811 MWWGUM URGENT - MARINE WEATHER MESSAGE National Weather Service Tiyan GU 411 AM ChST Mon Mar 31 2025 PMZ151>154-310700- /O.EXT.PGUM.SC.Y.0029.000000T0000Z-250331T0700Z/ Guam Coastal Waters-Rota Coastal Waters-Tinian Coastal Waters- Saipan Coastal Waters- 411 AM ChST Mon Mar 31 2025 ...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 5 PM CHST THIS AFTERNOON... * WHAT...East winds 15 to 20 kt with frequent gusts up to 30 kt. * WHERE...Marianas Coastal Waters. * WHEN...Until 5 PM ChST this afternoon. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid boating in hazardous conditions. && $$ Slagle
Permalink to 202503310601-PGUM-WHGM70-MWWGUM
030 WHGM70 PGUM 310601 MWWGUM URGENT - MARINE WEATHER MESSAGE National Weather Service Tiyan GU 401 PM ChST Mon Mar 31 2025 PMZ151>154-311900- /O.EXT.PGUM.SC.Y.0029.000000T0000Z-250331T1900Z/ Guam Coastal Waters-Rota Coastal Waters-Tinian Coastal Waters- Saipan Coastal Waters- 401 PM ChST Mon Mar 31 2025 ...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 5 AM CHST TUESDAY... * WHAT...East winds 15 to 20 kt with frequent gusts to 30 kt. * WHERE...Marianas Coastal Waters. * WHEN...Until 5 AM ChST Tuesday. * IMPACTS...Conditions will be hazardous to small craft. * ADDITIONAL DETAILS...The Small Craft Advisory was extended based on surface observations continuing to show frequent gusts in the 25 to 30 knot range, as well as latest scatterometry data indicating an area of fresh to strong trade winds just east of Marianas coastal waters, which will continue to generate choppy sea conditions hazardous to small craft. Model guidance points to a gradual decrease in wind speeds late overnight through Tuesday, which should allow seas to relax below hazardous levels. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid boating in hazardous conditions. && $$ DeCou
Permalink to 202503311749-PGUM-WHGM70-MWWGUM
812 WHGM70 PGUM 311749 MWWGUM URGENT - MARINE WEATHER MESSAGE National Weather Service Tiyan GU 349 AM ChST Tue Apr 1 2025 PMZ151>154-311900- /O.CAN.PGUM.SC.Y.0029.000000T0000Z-250331T1900Z/ Guam Coastal Waters-Rota Coastal Waters-Tinian Coastal Waters- Saipan Coastal Waters- 349 AM ChST Tue Apr 1 2025 ...SMALL CRAFT ADVISORY IS CANCELLED... Winds have diminished and are no longer hazardous to small craft. $$ Slagle
All Storm Reports within Event Political Coverage
Storm Reports within Product Polygon
This table lists other events issued by the selected office for the selected year. Click on the row to select that event.