SST (GOES-19) Fronts
Where NOAA's detector found a temperature break in the hourly GOES-19 picture — the freshest break map we carry. Most of the map is empty by design; blank means cloud blocked the view.
Updates hourly
More detail
The newest frame is about two hours old.
The layer cannot say how sharp a break is. For the temperatures on each side of a line, switch to SST (L3 Composite). The layer covers the Gulf of America, the East Coast and Baja.
Step the time slider back an hour or two: a spot clouded this hour is often clear an hour or two earlier.
Watch for cloud edges: the edge of a cloud deck can look like a temperature break to the detector. A real break holds its place hour after hour, and a cloud edge moves with the weather.
How it relates to the other break layer. SST (ACSPO) Fronts is the daily one, about a day and a half old and a nighttime picture, with fewer cloud gaps. A break that shows on SST (ACSPO) Fronts and not on this layer may be under cloud this hour. Use this layer for today's break and SST (ACSPO) Fronts for the steadier daily picture.
Only one data layer draws at a time, so turning this on turns the temperature layer off. Lower the Opacity in Layer Settings to let the chart show through the lines.
The numbers
| How often it updates | Every hour, 24 frames a day |
| How fresh it usually is | About 2 hours after the hour it shows |
| How detailed it is | The satellite's own sample over the Gulf is about 1.5 nautical miles |
| Where it covers | Gulf of America, East Coast and Baja |
| How far back you can look | 8 days back, hour by hour |
| Goes blank under cloud? | Yes, on purpose |
| Observed or modeled | Observed. Nothing is filled in |
| What you see on screen | Lines only, with no strength value |
Source: a satellite picture from the GOES-19 satellite (NOAA front detector).