I missed seeig the ISS tonight by abotu 10 minutes, and a short time later when te Huble went overhead I was stuck in the drive through lane at the local McDonalds! I tried sticking my head out the window and looking upwards but to no avail.
Both ISS and HST will be brighter and higher from our local viewpoint here tonight (Friday) night, though clouds seem to be the forecast at present. Fingers crossed.
Saturday night could be even more interesting - according to Heavens Above the ISS loses about 3 magnitudes brightness as compared to tonight (drops form -0.7 to 2.5), but the ISS and HST should both be visible in the sky at the same time!
ISS 18:24:39 to 18:27:59 - max alt at 18:26:19 (only 14 deg alt though)
HST 18:21:59 to 18:27:37 - max alt at 18:26:17 (80 deg alt)
Sounding a little like a photo opportunity