Context : Gaia DR2 offers unparalleled precision on stars ’ parallaxes and proper motions .
This allows the prediction of microlensing events for which the lens stars ( and any planets they possess ) are nearby and may be well studied and characterised .

Aims : We identify a number of potential microlensing events that will occur before the year 2035.5 , 20 years from the Gaia DR2 reference epoch .

Methods : We query Gaia DR2 for potential lenses within 100 pc , extract parallaxes and proper motions of the lenses and background sources , and identify potential lensing events .
We estimate the lens masses from Priam effective temperatures , and use these to calculate peak magnifications and the size of the Einstein radii relative to the lens stars ’ habitable zones .

Results : We identify 7 future events with a probability > 10 \% of an alignment within one Einstein radius .
Of particular interest is DR2 5918299904067162240 ( WISE J175839.20–583931.6 ) , magnitude G = 14.9 , which will lens a G = 13.9 background star in early 2030 , with a median 23 % net magnification .
Other pairs are typically fainter , hampering characterisation of the lens ( if the lens is faint ) or the ability to accurately measure the magnification ( if the source is much fainter than the lens ) .
Of timely interest is DR2 4116504399886241792 ( 2MASS J17392440–2327071 ) , which will lens a background star in July 2020 , albeit with weak net magnification ( 0.03 \% ) .
Median magnifications for the other 5 high-probability events range from 0.3 \% to 5.3 \% .
The Einstein radii for these lenses are 1–10 times the radius of the habitable zone , allowing these lensing events to pick out cold planets around the ice line , and filling a gap between transit and current microlensing detections of planets around very low-mass stars .

Conclusions : We provide a catalogue of the predicted events to aid future characterisation efforts .
Current limitations include a lack of many high-proper motion objects in Gaia DR2 and often large uncertainties on the proper motions of the background sources ( or only 2-parameter solutions ) .
Both of these deficiencies will be rectified with Gaia DR3 in 2020 .
Further characterisation of the lenses is also warranted to better constrain their masses and predict the photometric magnifications .