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.
Tab Functionality:
Above this section, you will notice six selectable tabs. Click on
the tab to show the information.
- Help: This page!
- Event Info: Details of the selected event.
- Text Data: The raw text product for this event.
- Interactive Map: An interactive map showing the event and RADAR.
- Storm Reports: Local Storm Reports.
- List Events: List all events of the given phenomena, significance, year, and issuing office.
Web Services Used:
This application is fully driven by IEM web services.
2025 [KSEW] SEATTLE Winter Weather (WW) Advisory (Y) Number 14
Listing of Counties/Parishes/Zones Included in Product
RADAR Composite at Issuance Time
Storm Based Warning History
902 WWUS46 KSEW 221822 WSWSEW URGENT - WINTER WEATHER MESSAGE National Weather Service Seattle WA 1122 AM PDT Sat Mar 22 2025 WAZ301-302-230400- /O.NEW.KSEW.WW.Y.0014.250323T0600Z-250323T1800Z/ Cascades of Whatcom and Skagit Counties-Cascades of Snohomish and Northern King Counties- Including Stevens Pass and Mount Baker 1122 AM PDT Sat Mar 22 2025 ...WINTER WEATHER ADVISORY IN EFFECT FROM 11 PM THIS EVENING TO 11 AM PDT SUNDAY... * WHAT...Snow expected. Total snow accumulations between 5 to 10 inches. * WHERE...Cascades of Snohomish and Northern King Counties and Cascades of Whatcom and Skagit Counties. * WHEN...From 11 PM this evening to 11 AM PDT Sunday. * IMPACTS...Travel could be very difficult. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. Prepare for possible power outages. && $$ JD
662 WWUS46 KSEW 230313 WSWSEW URGENT - WINTER WEATHER MESSAGE National Weather Service Seattle WA 813 PM PDT Sat Mar 22 2025 WAZ301-302-231200- /O.CON.KSEW.WW.Y.0014.250323T0600Z-250323T1800Z/ Cascades of Whatcom and Skagit Counties-Cascades of Snohomish and Northern King Counties- Including Stevens Pass and Mount Baker 813 PM PDT Sat Mar 22 2025 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 AM PDT SUNDAY... * WHAT...Snow expected. Total snow accumulations between 5 to 10 inches. * WHERE...Cascades of Snohomish and Northern King Counties and Cascades of Whatcom and Skagit Counties. * WHEN...Until 11 AM PDT Sunday. * IMPACTS...Travel could be very difficult to impossible. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. Prepare for possible power outages. && $$ 41
442 WWUS46 KSEW 231118 WSWSEW URGENT - WINTER WEATHER MESSAGE National Weather Service Seattle WA 418 AM PDT Sun Mar 23 2025 WAZ301-302-231800- /O.CON.KSEW.WW.Y.0014.000000T0000Z-250323T1800Z/ Cascades of Whatcom and Skagit Counties-Cascades of Snohomish and Northern King Counties- Including Mount Baker and Stevens Pass 418 AM PDT Sun Mar 23 2025 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 AM PDT THIS MORNING... * WHAT...Snow. Additional snow accumulations up to 5 inches. * WHERE...Cascades of Snohomish and Northern King Counties and Cascades of Whatcom and Skagit Counties. * WHEN...Until 11 AM PDT this morning. * IMPACTS...Travel could be very difficult. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. Prepare for possible power outages. && $$ 44
144 WWUS46 KSEW 231753 WSWSEW URGENT - WINTER WEATHER MESSAGE National Weather Service Seattle WA 1053 AM PDT Sun Mar 23 2025 WAZ301-302-231900- /O.EXP.KSEW.WW.Y.0014.000000T0000Z-250323T1800Z/ Cascades of Whatcom and Skagit Counties-Cascades of Snohomish and Northern King Counties- Including Mount Baker and Stevens Pass 1053 AM PDT Sun Mar 23 2025 ...WINTER WEATHER ADVISORY WILL EXPIRE AT 11 AM PDT THIS MORNING... Temperatures will continue to warm through this afternoon, as snow levels peak between 6000 to 7500 feet later today. This will allow for a transition from snow to rain. $$ JD
Permalink to 202503221822-KSEW-WWUS46-WSWSEW
902 WWUS46 KSEW 221822 WSWSEW URGENT - WINTER WEATHER MESSAGE National Weather Service Seattle WA 1122 AM PDT Sat Mar 22 2025 WAZ301-302-230400- /O.NEW.KSEW.WW.Y.0014.250323T0600Z-250323T1800Z/ Cascades of Whatcom and Skagit Counties-Cascades of Snohomish and Northern King Counties- Including Stevens Pass and Mount Baker 1122 AM PDT Sat Mar 22 2025 ...WINTER WEATHER ADVISORY IN EFFECT FROM 11 PM THIS EVENING TO 11 AM PDT SUNDAY... * WHAT...Snow expected. Total snow accumulations between 5 to 10 inches. * WHERE...Cascades of Snohomish and Northern King Counties and Cascades of Whatcom and Skagit Counties. * WHEN...From 11 PM this evening to 11 AM PDT Sunday. * IMPACTS...Travel could be very difficult. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. Prepare for possible power outages. && $$ JD
Permalink to 202503230313-KSEW-WWUS46-WSWSEW
662 WWUS46 KSEW 230313 WSWSEW URGENT - WINTER WEATHER MESSAGE National Weather Service Seattle WA 813 PM PDT Sat Mar 22 2025 WAZ301-302-231200- /O.CON.KSEW.WW.Y.0014.250323T0600Z-250323T1800Z/ Cascades of Whatcom and Skagit Counties-Cascades of Snohomish and Northern King Counties- Including Stevens Pass and Mount Baker 813 PM PDT Sat Mar 22 2025 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 AM PDT SUNDAY... * WHAT...Snow expected. Total snow accumulations between 5 to 10 inches. * WHERE...Cascades of Snohomish and Northern King Counties and Cascades of Whatcom and Skagit Counties. * WHEN...Until 11 AM PDT Sunday. * IMPACTS...Travel could be very difficult to impossible. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. Prepare for possible power outages. && $$ 41
Permalink to 202503231118-KSEW-WWUS46-WSWSEW
442 WWUS46 KSEW 231118 WSWSEW URGENT - WINTER WEATHER MESSAGE National Weather Service Seattle WA 418 AM PDT Sun Mar 23 2025 WAZ301-302-231800- /O.CON.KSEW.WW.Y.0014.000000T0000Z-250323T1800Z/ Cascades of Whatcom and Skagit Counties-Cascades of Snohomish and Northern King Counties- Including Mount Baker and Stevens Pass 418 AM PDT Sun Mar 23 2025 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 AM PDT THIS MORNING... * WHAT...Snow. Additional snow accumulations up to 5 inches. * WHERE...Cascades of Snohomish and Northern King Counties and Cascades of Whatcom and Skagit Counties. * WHEN...Until 11 AM PDT this morning. * IMPACTS...Travel could be very difficult. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. Prepare for possible power outages. && $$ 44
Permalink to 202503231753-KSEW-WWUS46-WSWSEW
144 WWUS46 KSEW 231753 WSWSEW URGENT - WINTER WEATHER MESSAGE National Weather Service Seattle WA 1053 AM PDT Sun Mar 23 2025 WAZ301-302-231900- /O.EXP.KSEW.WW.Y.0014.000000T0000Z-250323T1800Z/ Cascades of Whatcom and Skagit Counties-Cascades of Snohomish and Northern King Counties- Including Mount Baker and Stevens Pass 1053 AM PDT Sun Mar 23 2025 ...WINTER WEATHER ADVISORY WILL EXPIRE AT 11 AM PDT THIS MORNING... Temperatures will continue to warm through this afternoon, as snow levels peak between 6000 to 7500 feet later today. This will allow for a transition from snow to rain. $$ JD
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.