Noise Levels in Thrasher's Corner-Red Hawk, Bothell, WA | Find Quiet Neighborhoods With Our Sound Map
49 dBA
Average noise across Thrasher's Corner-Red Hawk
Quiet office
800
Residents above the EPA 55 dBA threshold
11% of Thrasher's Corner-Red Hawk residents
61 dBA
Loudest residential point
Normal conversation an arm’s length away
This map shows modeled outdoor noise across Thrasher's Corner-Red Hawk at 100-meter resolution, combining road, aviation, and rail sources. Green areas measure below 45 dBA. Orange and red exceed the EPA's 55 dBA outdoor threshold linked to long-term health effects. Use the layer toggles to view each source on its own or all together.
Overall
Road
Rail
Aviation
Click the map to explore
35 dBa55 dBa (EPA limit)90+ dBa
3545557090
Quietest (dBA)Loudest
Colorblind friendlyoff
What the numbers sound like
30 dBAWhisper
40 dBASoft rainfall
45 dBAQuiet suburban street at night
50 dBAQuiet office
55 dBAEPA outdoor threshold: light traffic 100 ft away
60 dBANormal conversation an arm's length away
65 dBABusy restaurant
70 dBAHighway traffic 50 ft away
80 dBACity bus interior
Population Above the EPA Outdoor Threshold
The EPA's 55 dBA outdoor reference level is a common benchmark for residential noise exposure, especially for activity interference, annoyance, and long-term community noise concerns. About 800 Thrasher's Corner-Red Hawk residents, or 11.3%, live above that level. By land area, 20.8% of Thrasher's Corner-Red Hawk is above 55 dBA.
Average noise levels for Thrasher's Corner-Red Hawk residents, grouped by direction from the center of Thrasher's Corner-Red Hawk. Eastern Thrasher's Corner-Red Hawk carries the highest population-weighted average; Central Thrasher's Corner-Red Hawk carries the lowest. Just 10% of residents in Central Thrasher's Corner-Red Hawk live in blocks above the EPA's 55 dBA threshold, about half the share in Eastern Thrasher's Corner-Red Hawk.
Central Thrasher's Corner-Red Hawk
48.9 dBA · Mostly quiet
Quiet office
10% of people above 55 dBA
QuietLoud
Eastern Thrasher's Corner-Red Hawk
51.0 dBA · Moderate
Quiet office
20% of people above 55 dBA
QuietLoud
Western Thrasher's Corner-Red Hawk
49.0 dBA · Mostly quiet
Quiet office
10% of people above 55 dBA
QuietLoud
Eastern Thrasher's Corner-Red Hawk sounds about 16% louder than Central Thrasher's Corner-Red Hawk to the human ear, a 2.1 dBA gap. Every 10 dBA roughly doubles perceived loudness. Within any of these directions, two homes a quarter mile apart can still differ by 10 or more dBA depending on how close they sit to a major highway.
How far back from do you need to be?
produces an estimated 61 dBA at its loudest centerline points. Noise drops logarithmically with distance, with the exact rate depending on what's between you and the road. Tree cover, walls, terrain, and pavement type all matter. At roughly a quarter mile back, traffic fades into the noise level of a soft rainfall.
At source
61 dBA
Normal conversation an arm’s length away
165 ft
49 dBA
Quiet office
330 ft
43 dBA
Quiet suburban street at night
660 ft
36 dBA
Soft rainfall
¼ mile
35 dBA
Soft rainfall
½ mile
35 dBA
Soft rainfall
Calculated from the model's calibrated attenuation formula. About 41% of Thrasher's Corner-Red Hawk sits under tree canopy (much heavier than most neighborhoods) and roughly 41% is impervious surface like pavement and rooftops. Both are folded into the per-place decay rate above. Heavier canopy pulls noise down faster with distance; impervious surfaces slow the drop.
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Airport Noise
Seattle-Tacoma International (SEA) sits south of Thrasher's Corner-Red Hawk. The U.S. Department of Transportation measures aviation noise around this airport directly, and the model uses those federal measurements rather than synthetic predictions.
Blocks under the approach and departure paths carry combined road-plus-aviation noise, with some exceeding 75 dBA on the map's Overall layer. Blocks on the opposite side of Thrasher's Corner-Red Hawk, particularly to the north, show no measurable aviation contribution. Use the Aviation toggle on the map above to isolate the airport's footprint.
How Noise Is Distributed Across Thrasher's Corner-Red Hawk
The bar chart below shows the share of Thrasher's Corner-Red Hawk residents in each noise band. About 99% of residents live below the EPA's 55 dBA threshold, and roughly 0% live in blocks above 60 dBA. Long-term exposure in that range is linked to elevated stress hormones and cardiovascular risk.
How Thrasher's Corner-Red Hawk Compares
Thrasher's Corner-Red Hawk sits the lowest among the peer group. Below: how Thrasher's Corner-Red Hawk's average outdoor noise and share of residents above the EPA threshold compare with Meadowdale, Meridian Park, Totem Lake, and Cascade View.
Average noise level (dBA)
Thrasher's Corner-Red Hawk's 49.2 dBA pop-weighted average is the lowest among the peer group. Washington as a whole averages 51.3 dBA and the U.S. averages 52.0 dBA. Both are lower than Thrasher's Corner-Red Hawk because most of either area is rural land away from major roads.
Share of residents above 55 dBA
About 11.3% of Thrasher's Corner-Red Hawk residents live in blocks where outdoor levels exceed the EPA's 55 dBA threshold. That's fewer than any of its peer group. Measured by land area instead, 20.8% of Thrasher's Corner-Red Hawk's footprint sits above 55 dBA, against a Washington average of 27.7% and a national average of 28.1%.
What This Means if You're Moving to Thrasher's Corner-Red Hawk
Distance from highways matters more than the neighborhood name. Two homes in the same zip code can differ by 20 dBA if one sits 100 meters from and the other 500 meters away. The model captures this at 100-meter resolution, so noise exposure changes block by block.
Tree canopy can help reduce modeled noise exposure. Roughly 41% of Thrasher's Corner-Red Hawk is under tree cover (much heavier than most neighborhoods), and the dominant land cover is medium-intensity developed land. Both are measured from federal USDA Forest Service and USGS satellite imagery at 30-meter resolution. Streets with 60% or higher canopy show 3 to 5 dBA lower noise than comparable streets with bare ground or pavement, which is why the per-place decay rate above already accounts for it.
Airport noise is directional. Seattle-Tacoma International's approach paths concentrate aviation noise to the south. Neighborhoods to the north of downtown show no measurable contribution from the airport.
Sources & Methodology
The BestNeighborhood noise model is calibrated against nearly one million federal ground-truth measurements across four states. Road noise is computed from segment-level federal traffic data and propagated outward using physics-based acoustic decay, with attenuation rates that depend on the surrounding land cover.
All inputs are published federal datasets. Block-level noise is computed by combining road, rail, and aviation sound sources in the energy domain, the same physics used in professional environmental noise assessments. Read the full methodology.
