RAIM world map

Minutes without RAIM worldwide, yesterday, today and tomorrow (UTC). Public, updated at 00, 06, 12 and 18 UTC, no account needed.

Day (UTC) Yesterday 13 Oct Today 14 Oct Tomorrow 15 Oct
Alert limit 0.1 NM 0.3 NM
RAIM unavailability, worldwide 13 Oct · HAL 0.1 NM

580 cells lose RAIM

FAA plot settings · fault detection · 5° mask · one-minute step · HAL 0.1 NM · updated 14 Oct 18:00Z

RAIM world map, 13 Oct · HAL 0.1 NM: 580 cells lose RAIM
Minutes without RAIM up to 5 min 5 to 15 15 to 30 30 to 60 over 60 min
Cells losing RAIM
580
of 16,380 cells, 3.54%
Longest in one cell
30 min
at 2°N 50°W
Satellite outages
1
PRN 31 (NANUs)
GPS almanac
32/32
satellites healthy · almanac toa 16 Oct 19:56Z

Each 2 degree cell shows how many minutes of the UTC day RAIM fault detection is not available at the chosen alert limit. It is computed with the settings of the FAA's daily RAIM unavailability plot (fault detection, 5 degree mask, one-minute step) from the GPS almanac and that day's satellite outage notices (NANUs). A blank map is the good outcome.

Yesterday's map is computed again at every update, from what is known by then, including outage notices published after the day.

0.3 NM is the alert limit for a non-precision (LNAV) approach. 0.1 NM is stricter, so its map shows more cells.

Built with
POST /v1/raim/map

It takes any day, alert limit, grid and settings with an API key; the console draws the same map and exports it as PNG. The maps on this page are also at /raim-map/maps.json.