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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2025 [PHFO] HONOLULU Winter Storm (WS) Watch (A) Number 1
Listing of Counties/Parishes/Zones Included in Product
RADAR Composite at Issuance Time
Storm Based Warning History
464 WWHW40 PHFO 290148 WSWHFO URGENT - WINTER WEATHER MESSAGE National Weather Service Honolulu HI 348 PM HST Tue Jan 28 2025 ...WINTER WEATHER WATCH FOR THE SUMMITS OF HALEAKALA, MAUNA KEA, AND MAUNA LOA LATE WEDNESDAY NIGHT THROUGH FRIDAY MORNING... .A strong winter low pressure system will bring the potential for snow and ice to the summits of Haleakala and the Big Island. HIZ022-291500- /O.NEW.PHFO.WS.A.0001.250130T1000Z-250131T1400Z/ Haleakala Summit- 348 PM HST Tue Jan 28 2025 ...WINTER STORM WATCH IN EFFECT LATE WEDNESDAY NIGHT THROUGH LATE THURSDAY NIGHT... * WHAT...Periods of snow and mixed precipitation. Snow accumulations up to four inches possible. A light glaze of ice is also possible on wet surfaces as temperatures drop below freezing. * WHERE...Haleakala Summit. * WHEN...From late Wednesday night through late Thursday night. * IMPACTS...Travel could be very difficult to impossible. Blowing snow will significantly reduce visibility at times, with periods of zero visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Watch means there is potential for significant snow or ice accumulations that may impact the summits. Anyone planning travel to the summits, including hikers and campers, should monitor the latest forecasts and consider postponing their trip until improved weather returns. && $$ HIZ028-291500- /O.NEW.PHFO.WS.A.0001.250130T1000Z-250131T2200Z/ Big Island Summits- 348 PM HST Tue Jan 28 2025 ...WINTER STORM WATCH IN EFFECT LATE WEDNESDAY NIGHT THROUGH FRIDAY MORNING... * WHAT...Periods of snow and mixed precipitation. Snow accumulations up to ten inches possible. A light glaze of ice is also possible on wet surfaces as temperatures drop below freezing. * WHERE...Big Island Summits. * WHEN...From late Wednesday night through Friday morning. * IMPACTS...Travel could be very difficult to impossible. Blowing snow will significantly reduce visibility at times, with periods of zero visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Watch means there is potential for significant snow or ice accumulations that may impact the summits. Anyone planning travel to the summits, including hikers and campers, should monitor the latest forecasts and consider postponing their trip until improved weather returns. && $$ AHUE
896 WWHW40 PHFO 291311 WSWHFO URGENT - WINTER WEATHER MESSAGE National Weather Service Honolulu HI 311 AM HST Wed Jan 29 2025 ...WINTER WEATHER WATCH FOR THE SUMMITS OF MAUNA KEA AND MAUNA LOA LATE TONIGHT THROUGH FRIDAY MORNING... .A strong winter low pressure system will bring the potential for snow and ice to the summits of the Big Island. HIZ022-291415- /O.CAN.PHFO.WS.A.0001.250130T1000Z-250131T1400Z/ Haleakala Summit- 311 AM HST Wed Jan 29 2025 ...WINTER STORM WATCH IS CANCELLED... The temperatures are forecast to remain above freezing at the summit. $$ HIZ028-300215- /O.CON.PHFO.WS.A.0001.250130T1000Z-250131T2200Z/ Big Island Summits- 311 AM HST Wed Jan 29 2025 ...WINTER STORM WATCH REMAINS IN EFFECT FROM LATE TONIGHT THROUGH FRIDAY MORNING... * WHAT...Periods of heavy snow and ice accumulations. Snow accumulations ranging from 4 to 8 inches possible. A light glaze of ice is also possible on wet surfaces as temperatures drop below freezing. * WHERE...Big Island Summits. * WHEN...From late tonight through Friday morning. * IMPACTS...Travel could be very difficult to impossible. Blowing snow will significantly reduce visibility at times, with periods of zero visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Watch means there is potential for significant snow or ice accumulations that may impact the summits. Anyone planning travel to the summits, including hikers and campers, should monitor the latest forecasts and consider postponing their trip until improved weather returns. && $$ AG
799 WWHW40 PHFO 300036 WSWHFO URGENT - WINTER WEATHER MESSAGE National Weather Service Honolulu HI 236 PM HST Wed Jan 29 2025 ...WINTER WEATHER WATCH FOR THE SUMMITS OF MAUNA KEA AND MAUNA LOA THURSDAY MORNING THROUGH FRIDAY MORNING... .A strong winter low pressure system will bring the potential for snow and ice to the summits of the Big Island. HIZ028-301600- /O.EXT.PHFO.WS.A.0001.250130T1600Z-250131T2200Z/ Big Island Summits- 236 PM HST Wed Jan 29 2025 ...WINTER STORM WATCH NOW IN EFFECT FROM THURSDAY MORNING THROUGH FRIDAY MORNING... * WHAT...Periods of heavy snow and ice accumulations. Snow accumulations ranging from 4 to 8 inches possible. A light glaze of ice is also possible on wet surfaces as temperatures drop below freezing. * WHERE...Big Island Summits. * WHEN...From Thursday morning through Friday morning. * IMPACTS...Travel could be very difficult to impossible. Blowing snow will significantly reduce visibility at times, with periods of zero visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Watch means there is potential for significant snow or ice accumulations that may impact the summits. Anyone planning travel to the summits, including hikers and campers, should monitor the latest forecasts and consider postponing their trip until improved weather returns. && $$ AHUE
263 WWHW40 PHFO 301315 WSWHFO URGENT - WINTER WEATHER MESSAGE National Weather Service Honolulu HI 315 AM HST Thu Jan 30 2025 ...WINTER STORM WARNING FOR THE SUMMITS OF MAUNA KEA AND MAUNA LOA FROM NOON TODAY THROUGH 6 AM SATURDAY... .A strong winter low pressure system will bring periods of heavy snow to the summits of the Big Island later today through Friday night. HIZ028-310400- /O.UPG.PHFO.WS.A.0001.250130T1600Z-250131T2200Z/ /O.NEW.PHFO.WS.W.0001.250130T2200Z-250201T1600Z/ Big Island Summits- 315 AM HST Thu Jan 30 2025 ...WINTER STORM WARNING IN EFFECT FROM NOON TODAY TO 6 AM HST SATURDAY... * WHAT...Heavy snow expected. Total snow accumulations of 12 to 24 inches. Winds gusting as high as 85 mph will result in considerable blowing and drifting of the snow. * WHERE...Big Island Summits. * WHEN...From noon today to 6 AM HST Saturday. * IMPACTS...Travel could be very difficult to impossible. Blowing snow will significantly reduce visibility at times, with periods of zero visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning means significant amounts of snow, sleet, and ice are expected or occurring. Strong winds are also possible. This will make travel very hazardous or impossible. Any travel plans to the summits should be postponed until the threat diminishes. && $$ JELSEMA
Permalink to 202501290148-PHFO-WWHW40-WSWHFO
464 WWHW40 PHFO 290148 WSWHFO URGENT - WINTER WEATHER MESSAGE National Weather Service Honolulu HI 348 PM HST Tue Jan 28 2025 ...WINTER WEATHER WATCH FOR THE SUMMITS OF HALEAKALA, MAUNA KEA, AND MAUNA LOA LATE WEDNESDAY NIGHT THROUGH FRIDAY MORNING... .A strong winter low pressure system will bring the potential for snow and ice to the summits of Haleakala and the Big Island. HIZ022-291500- /O.NEW.PHFO.WS.A.0001.250130T1000Z-250131T1400Z/ Haleakala Summit- 348 PM HST Tue Jan 28 2025 ...WINTER STORM WATCH IN EFFECT LATE WEDNESDAY NIGHT THROUGH LATE THURSDAY NIGHT... * WHAT...Periods of snow and mixed precipitation. Snow accumulations up to four inches possible. A light glaze of ice is also possible on wet surfaces as temperatures drop below freezing. * WHERE...Haleakala Summit. * WHEN...From late Wednesday night through late Thursday night. * IMPACTS...Travel could be very difficult to impossible. Blowing snow will significantly reduce visibility at times, with periods of zero visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Watch means there is potential for significant snow or ice accumulations that may impact the summits. Anyone planning travel to the summits, including hikers and campers, should monitor the latest forecasts and consider postponing their trip until improved weather returns. && $$ HIZ028-291500- /O.NEW.PHFO.WS.A.0001.250130T1000Z-250131T2200Z/ Big Island Summits- 348 PM HST Tue Jan 28 2025 ...WINTER STORM WATCH IN EFFECT LATE WEDNESDAY NIGHT THROUGH FRIDAY MORNING... * WHAT...Periods of snow and mixed precipitation. Snow accumulations up to ten inches possible. A light glaze of ice is also possible on wet surfaces as temperatures drop below freezing. * WHERE...Big Island Summits. * WHEN...From late Wednesday night through Friday morning. * IMPACTS...Travel could be very difficult to impossible. Blowing snow will significantly reduce visibility at times, with periods of zero visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Watch means there is potential for significant snow or ice accumulations that may impact the summits. Anyone planning travel to the summits, including hikers and campers, should monitor the latest forecasts and consider postponing their trip until improved weather returns. && $$ AHUE
Permalink to 202501291311-PHFO-WWHW40-WSWHFO
896 WWHW40 PHFO 291311 WSWHFO URGENT - WINTER WEATHER MESSAGE National Weather Service Honolulu HI 311 AM HST Wed Jan 29 2025 ...WINTER WEATHER WATCH FOR THE SUMMITS OF MAUNA KEA AND MAUNA LOA LATE TONIGHT THROUGH FRIDAY MORNING... .A strong winter low pressure system will bring the potential for snow and ice to the summits of the Big Island. HIZ022-291415- /O.CAN.PHFO.WS.A.0001.250130T1000Z-250131T1400Z/ Haleakala Summit- 311 AM HST Wed Jan 29 2025 ...WINTER STORM WATCH IS CANCELLED... The temperatures are forecast to remain above freezing at the summit. $$ HIZ028-300215- /O.CON.PHFO.WS.A.0001.250130T1000Z-250131T2200Z/ Big Island Summits- 311 AM HST Wed Jan 29 2025 ...WINTER STORM WATCH REMAINS IN EFFECT FROM LATE TONIGHT THROUGH FRIDAY MORNING... * WHAT...Periods of heavy snow and ice accumulations. Snow accumulations ranging from 4 to 8 inches possible. A light glaze of ice is also possible on wet surfaces as temperatures drop below freezing. * WHERE...Big Island Summits. * WHEN...From late tonight through Friday morning. * IMPACTS...Travel could be very difficult to impossible. Blowing snow will significantly reduce visibility at times, with periods of zero visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Watch means there is potential for significant snow or ice accumulations that may impact the summits. Anyone planning travel to the summits, including hikers and campers, should monitor the latest forecasts and consider postponing their trip until improved weather returns. && $$ AG
Permalink to 202501300036-PHFO-WWHW40-WSWHFO
799 WWHW40 PHFO 300036 WSWHFO URGENT - WINTER WEATHER MESSAGE National Weather Service Honolulu HI 236 PM HST Wed Jan 29 2025 ...WINTER WEATHER WATCH FOR THE SUMMITS OF MAUNA KEA AND MAUNA LOA THURSDAY MORNING THROUGH FRIDAY MORNING... .A strong winter low pressure system will bring the potential for snow and ice to the summits of the Big Island. HIZ028-301600- /O.EXT.PHFO.WS.A.0001.250130T1600Z-250131T2200Z/ Big Island Summits- 236 PM HST Wed Jan 29 2025 ...WINTER STORM WATCH NOW IN EFFECT FROM THURSDAY MORNING THROUGH FRIDAY MORNING... * WHAT...Periods of heavy snow and ice accumulations. Snow accumulations ranging from 4 to 8 inches possible. A light glaze of ice is also possible on wet surfaces as temperatures drop below freezing. * WHERE...Big Island Summits. * WHEN...From Thursday morning through Friday morning. * IMPACTS...Travel could be very difficult to impossible. Blowing snow will significantly reduce visibility at times, with periods of zero visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Watch means there is potential for significant snow or ice accumulations that may impact the summits. Anyone planning travel to the summits, including hikers and campers, should monitor the latest forecasts and consider postponing their trip until improved weather returns. && $$ AHUE
Permalink to 202501301315-PHFO-WWHW40-WSWHFO
263 WWHW40 PHFO 301315 WSWHFO URGENT - WINTER WEATHER MESSAGE National Weather Service Honolulu HI 315 AM HST Thu Jan 30 2025 ...WINTER STORM WARNING FOR THE SUMMITS OF MAUNA KEA AND MAUNA LOA FROM NOON TODAY THROUGH 6 AM SATURDAY... .A strong winter low pressure system will bring periods of heavy snow to the summits of the Big Island later today through Friday night. HIZ028-310400- /O.UPG.PHFO.WS.A.0001.250130T1600Z-250131T2200Z/ /O.NEW.PHFO.WS.W.0001.250130T2200Z-250201T1600Z/ Big Island Summits- 315 AM HST Thu Jan 30 2025 ...WINTER STORM WARNING IN EFFECT FROM NOON TODAY TO 6 AM HST SATURDAY... * WHAT...Heavy snow expected. Total snow accumulations of 12 to 24 inches. Winds gusting as high as 85 mph will result in considerable blowing and drifting of the snow. * WHERE...Big Island Summits. * WHEN...From noon today to 6 AM HST Saturday. * IMPACTS...Travel could be very difficult to impossible. Blowing snow will significantly reduce visibility at times, with periods of zero visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning means significant amounts of snow, sleet, and ice are expected or occurring. Strong winds are also possible. This will make travel very hazardous or impossible. Any travel plans to the summits should be postponed until the threat diminishes. && $$ JELSEMA
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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.