Grid GR99 Band Conditions
Localized HF conditions for Maidenhead locator GR99. Coordinating at 89.50°, -41.00°. Updated with real-time telemetry from NOAA and DX cluster reports.
GR99 currently has elevated aurora risk (Kp: 5). High-latitude paths may be degraded.
From the GR99 operating area, work the no sunrise — polar day and no sunset — polar day grayline windows: probe 20m, 30m, and 40m in the 15 minutes either side while the terminator crosses GR99.
10m is the headline band right now, with 20m as the dependable fallback if conditions soften.
This square sits in a mixed-region footprint and is best used as a planning center for portable, field-day, and home-station band decisions.
- Latitude zone
- high-latitude
- Local phase
- Daylight
- Aurora exposure
- elevated — auroral absorption likely (Kp 5)
- Grayline
- no sunrise — polar day / no sunset — polar day
- Best high band
- 10m
- Nearest city
- the GR99 operating area
● Local Band Quality Scorings
Use this local score for GR99, then compare the global live ranking oncurrent ham band conditionsbefore changing bands.
● Best DX Windows from GR99 — the GR99 operating area
Great-circle distance, short-path beam heading, the bands most likely open right now from GR99 to each DX region at SFI 150 / Kp 5, 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 |
|---|---|---|---|---|
| Europe | 2,742 mi | 129° | 10m, 15m, 20m | Open now |
| North America | 3,505 mi | 237° | 10m, 15m, 20m | Open now |
| East Asia / Japan | 3,766 mi | 1° | 40m, 20m | Marginal now |
| South Asia | 4,715 mi | 61° | 40m, 20m | Marginal now |
| South America | 7,222 mi | 197° | 10m, 15m, 20m | Open now |
| Southern Africa | 8,001 mi | 113° | 40m, 20m | Marginal now |
| Oceania | 8,325 mi | 349° | 10m, 15m, 20m | Open now |
● Band-by-Time Plan for GR99
A planning heuristic for the local day at GR99, built from sunrise no sunrise — polar day, sunset no sunset — polar day, SFI 150, and Kp 5. Not a measurement — a starting point for where to listen as the day turns.
Grayline enhancement — low bands reach long distances as the terminator passes. Geomagnetic storm in progress (Kp 5) — expect absorption and weak high-latitude paths.
High bands rising with the sun; check 10m for DX.
Peak high-band window — 10m and 15m open widest.
Second grayline peak — 20m holds, then hands off to 40m. Geomagnetic storm in progress (Kp 5) — expect absorption and weak high-latitude paths.
Low bands own the darkness — 40m for DX, 80m regional. Geomagnetic storm in progress (Kp 5) — expect absorption and weak high-latitude paths.
Recent local activity
Spots touching GR99 and the adjacent squares
These are the newest 10m, 15m, and 20m reports where one side of the path sits in GR99, GR99, GR98, HR09, GR89. This gives the page unique, local context instead of a generic solar snapshot.
Top DX targets
Where this grid is reaching right now
Contest preview
Next major contest outlook
No contest event is currently loaded. For planning from GR99, start with 10m FAIR, 15m FAIR, 20m POOR and keep 20m available as the safest all-around fallback.
Open contest calendarNearby grids
Four adjacent squares for internal path checking
Regional hub links