Bug report: Models run outside domain but return NaN

**Expected behavior**
Tide modelling outside of domain fails with error

**Describe the problem**
These coords apparently run, but produce NaNs:
```
tenby: -4.69849,51.67553
mumbles:  -3.9776775, 51.569605
off mumbles head: -3.97477,51.55402
way of uk coast: -4.92609,51.22572
ilfracombe: -4.1124861, 51.210566
```

**To reproduce**
Run against files on default DEA Sandbox