What grid square is Seattle?

CN87 is the live DXRadar reference square for Seattle. The exact portable or home QTH may vary within the square, but this page tracks the center of CN87 for planning propagation.

How do I find my grid square?

Use a Maidenhead grid lookup from your GPS coordinates or street address, then compare that grid with the nearby squares linked on this page. A 4-character grid is enough for most HF planning.

What bands are open in CN87 right now?

CN87 is currently rated POOR. The best bands right now are 10m, 20m, 30m, 40m, 60m, with 10m as the main band to watch first.

Grid CN87 Band Conditions — Seattle

Localized HF conditions for Maidenhead locator CN87. Coordinating at 47.50°, -123.00°. Updated with real-time telemetry from NOAA and DX cluster reports.

CN87 conditions are POOR. Best bands: 10m, 20m, 30m, 40m, 60m. SFI: 104.

Regional Radar

SFI

104

K-Index

0 Kp

Center Coords

47.5, -123.0

Local Phase

Daylight

Grayline window

Sunrise 13:58 UTC

Sunset 02:14 UTC from CN87

From Seattle, work the 13:58 UTC and 02:14 UTC grayline windows: probe 20m, 30m, and 40m in the 15 minutes either side while the terminator crosses CN87.

Best band now

10m

10m and 20m are the main daytime rate bands from this part of North America. Watch 10m first if SFI stays elevated.

Closest operating hub

Seattle

This square sits in USA footprint and is best used as a planning center for portable, field-day, and home-station band decisions.

Latitude zone: upper mid-latitude
Local phase: Daylight
Aurora exposure: low at this latitude
Grayline: 13:58 UTC / 02:14 UTC
Best high band: 10m
Nearest city: Seattle

● Local Band Quality Scorings

Use this local score for CN87, then compare the global live ranking oncurrent ham band conditionsbefore changing bands.

10m

EXCELLENT

15m

EXCELLENT

20m

GOOD

40m

POOR

80m

POOR

● Best DX Windows from CN87 — Seattle

Great-circle distance, short-path beam heading, the bands most likely open right now from CN87 to each DX region at SFI 104 / Kp 0, and a current verdict. "Open now" means a suitable band is scoring well on that path; "Try ~HH:MM" points at the next far-end grayline. Band picks and status are a planning heuristic, not a measurement.

Target	Distance	Beam	Bands to try	Status
North America	1,380 mi	106°	10m, 15m, 20m	Open now
East Asia / Japan	4,812 mi	302°	10m, 15m, 20m	Open now
Europe	5,142 mi	29°	40m, 20m, 80m	Open now
South America	5,882 mi	119°	10m, 15m, 20m	Open now
South Asia	7,460 mi	340°	10m, 15m, 20m	Open now
Oceania	7,584 mi	247°	10m, 15m, 20m	Open now
Southern Africa	10,194 mi	60°	40m, 20m, 80m	Open now

● Band-by-Time Plan for CN87

A planning heuristic for the local day at CN87, built from sunrise 13:58 UTC, sunset 02:14 UTC, SFI 104, and Kp 0. Not a measurement — a starting point for where to listen as the day turns.

Dawn grayline

around 13:58 UTC

40m · 30m · 20m

Grayline enhancement — low bands reach long distances as the terminator passes.

Morning

after 13:58 UTC

20m · 15m

Modest SFI — 20m is the daytime workhorse here.

Midday

local noon

15m · 20m

20m and 15m carry the daytime load at this SFI.

Dusk grayline

around 02:14 UTC

20m · 40m

Second grayline peak — 20m holds, then hands off to 40m.

Night

after 02:14 UTC

40m · 80m

Low bands own the darkness — 40m for DX, 80m regional.

Recent local activity

Spots touching CN87 and the adjacent squares

These are the newest 10m, 15m, and 20m reports where one side of the path sits in CN87, CN88, CN86, CN97, CN77. This gives the page unique, local context instead of a generic solar snapshot.

No fresh PSKReporter paths are cached for the immediate CN87 footprint right now. That usually means you should widen the search to the nearest regional hubs below or fall back to 20m/40m for the next operating window.

Top DX targets

Where this grid is reaching right now

No outbound targets were strong enough to rank from the current cache. Check back after the next PSKReporter refresh or switch to the regional grids below.

Contest preview

Next major contest outlook

No contest event is currently loaded. For planning from CN87, start with 10m EXCELLENT, 15m EXCELLENT, 20m GOOD and keep 20m available as the safest all-around fallback.

Open contest calendar

Nearby grids