Lead: Seattle could get a brief window for skywatching Tuesday night as rain is forecast to ease, offering a chance to see the Leonids meteor shower. The stream of debris from comet 55P/Tempel-Tuttle is near the Sun this season, producing Leonid activity that peaked Nov. 16–17 but remains active through Nov. 30, according to the American Meteor Society. National Weather Service forecasts expect showers to taper off during Tuesday, followed by a dry evening and a sunny Wednesday, though incoming fog may limit visibility. Observers should plan for variable conditions and local differences in cloud and mist cover.
Key Takeaways
- The Leonids originate from comet 55P/Tempel-Tuttle and are active through Nov. 30, per the American Meteor Society.
- The shower’s primary peak occurred Nov. 16–17, but residual activity may still be visible Tuesday night in Seattle.
- Rain showers are expected to wind down Tuesday daytime; forecasts indicate a dry window during the evening for potential viewing.
- Fog replacing rain could reduce visibility in many locations; successful observation will depend on local conditions and light pollution.
- A major Leonid outburst was last best observed in 2002; a similarly dense debris encounter is not predicted until about 2099.
- Comet 55P/Tempel-Tuttle returns in 2031 and 2064, but those passages may not produce strong storms.
Background
The Leonids are an annual meteor shower tied to comet 55P/Tempel-Tuttle, named for the constellation Leo where their radiant appears. When Earth crosses the comet’s debris trail, small particles enter the atmosphere at high speed and burn up as meteors. The shower has a long history of producing dramatic storms, notably in 1833 and 1966, but such intense displays are rare and depend on colliding with dense knots of debris left by the comet.
The American Meteor Society tracks active showers and recent peaks; this year the Leonids’ strongest activity centered on Nov. 16–17, though the stream remains active through Nov. 30. Meteorological factors—cloud cover, rain, and fog—are the primary local constraints on visibility in Seattle, where autumn overcast and precipitation are common. National Weather Service briefings highlight a short-term improvement in conditions late Tuesday as a system moves through the region.
Main Event
Forecast models and local briefings indicate rain showers will start early Tuesday but are expected to diminish through the afternoon and evening, creating a potential clear window after dark. That timing aligns with the post-peak tail of Leonid activity, offering a chance to catch sporadic meteors even though the shower’s main peak has passed. Observers should aim for darker sites away from streetlights, with northerly horizons where Leo stands higher after sunset.
National Weather Service meteorologist Matthew Cullen said the daytime rain should taper and that Wednesday will likely be sunny, although the period of interest is Tuesday night. Cullen also warned that fog forming after the rain could quickly degrade transparency: localized patches of mist may persist in low-lying or sheltered spots. Those planning to watch should monitor updated forecasts and consider moving to higher ground or wind-exposed sites where fog thins earlier.
American Meteor Society notes that Leonid rates in the post-peak phase are unpredictable and vary by location; urban observers can expect lower counts per hour than dark-site viewers. Because the shower’s peak just passed, skywatchers should temper expectations for a storm-like display and instead hope for intermittent bright meteors and occasional fireballs. Binoculars are generally unnecessary; naked-eye scanning of a broad patch of sky remains the best strategy.
Analysis & Implications
The immediate implication is primarily recreational: a dry evening could permit public interest in backyard astronomy and impromptu viewing events. Local astronomy clubs and planetariums often field inquiries after forecast windows like this one, and short clearings can boost outreach and membership interest. However, the scientific value of these brief post-peak sightings is limited compared with targeted campaigns during predicted outbursts when particle densities are much higher.
From a longer-term perspective, the Leonids illustrate how cometary debris streams evolve over centuries. Historical storms occurred when Earth intersected denser filaments of particles; current orbital models suggest the next comparable encounter is centuries away (circa 2099), so most future Leonid returns, including comet passages in 2031 and 2064, are unlikely to produce storm-level rates. That highlights the rarity of intense Leonid displays and sets realistic expectations for contemporary observers.
For meteor-science monitoring, even low to moderate meteor counts contribute to understanding stream structure and particle distribution. Amateur observations reported to networks such as the American Meteor Society and radar detections feed scientific analyses of meteoroid flux and atmospheric entry behavior. Yet local weather remains the gating factor for observational data gathered from ground-based visual counts in Seattle.
Comparison & Data
| Year | Event |
|---|---|
| 1833 | Historic Leonid storm, very high rates |
| 1966 | Major storm observed over North America |
| 2002 | Noted strong outburst; last widely observed burst |
| 2031 / 2064 | Next returns of 55P/Tempel-Tuttle (no storm guaranteed) |
| ~2099 | Projected possible dense debris encounter |
The table summarizes major historical Leonid events and future orbital dates for comet 55P/Tempel-Tuttle. While past storm years are well documented, predictive models for dense debris encounters carry uncertainty and depend on the comet’s dust ejection history and gravitational perturbations over time. For Seattle observers in 2025, the key takeaway is that Tuesday offers only a post-peak opportunity rather than a predicted storm.
Reactions & Quotes
Local forecasters stress the conditional nature of any viewing opportunity and urge checking updated forecasts shortly before nightfall.
“Rain showers will wind down during the day, and a dry window looks possible Tuesday evening,”
Matthew Cullen, National Weather Service meteorologist
Navigating residual fog and cloud variability will determine how many meteors are visible to observers across the metro area.
“The Leonids remain active through Nov. 30 though their primary peak was Nov. 16–17; post-peak rates are often sporadic,”
American Meteor Society (meteor shower brief)
Unconfirmed
- Local meteor rates for Tuesday night in Seattle are unconfirmed and will depend on actual cloud and fog cover at viewing locations.
- Predictions about the exact density of debris for comet returns in 2031 and 2064 are model-based and not certain.
Bottom Line
This Tuesday offers a modest opportunity for Seattle-area skywatchers to observe the tail end of Leonid activity if the forecasted break in rain materializes. Expect sporadic meteors rather than a storm; clear, dark sites away from lights and fog will yield the best chance of sightings.
Because the Leonids’ most intense displays are rare—last widely seen in 2002 and not anticipated again until much later—observers should treat this as a low-impact, high-interest event: simple to attempt with potentially rewarding results, but weather-dependent and unlikely to deliver a dramatic shower in most urban locations.