  Accreting low mass X-ray binaries (LMXBs) are capable of launching powerful
outflows such as accretion disc winds. In disc winds, vast amounts of material
can be carried away, potentially greatly impacting the binary and its
environment. Previous studies have uncovered signatures of disc winds in the
X-ray, optical, near-infrared, and recently even the UV band, predominantly in
LMXBs with large discs ($P_{orb}{\geq}20$ hrs). Here, we present the discovery
of transient UV outflow features in UW CrB, a high-inclination
($i{\geq}77$\deg) neutron star LMXB with an orbital period of only
$P_{orb}{\approx}111$ min. We present P-Cygni profiles detected for Si iv
1400\r{A} and tentatively for N v 1240\r{A} in one 15 min exposure, which is
the only exposure covering orbital phase $\phi{\approx}0.7{-}0.8$, with a
velocity of ${\approx}1500$ km/s. We show that due to the presence of black
body emission from the neutron star surface and/or boundary layer, a thermal
disc wind can be driven despite the short $P_{orb}$, but explore alternative
scenarios as well. The discovery that thermal disc winds may occur in NS-LMXBs
with $P_{orb}$ as small as ${\approx}111$ min, and can potentially be transient
on time scales as short as ${\approx}15$ min, warrants further observational
and theoretical work.
