  We present mid-infrared spectroscopic observations of the nucleus of the
nearby Seyfert galaxy NGC 7469 taken with the MIRI instrument on the James Webb
Space Telescope (JWST) as part of Directors Discretionary Time Early Release
Science (ERS) program 1328. The high resolution nuclear spectrum contains 19
emission lines covering a wide range of ionization. The high ionization lines
show broad, blueshifted emission reaching velocities up to 1700 km s$^{-1}$ and
FWHM ranging from $\sim500 - 1100$ km s$^{-1}$. The width of the broad emission
and the broad to narrow line flux ratios correlate with ionization potential.
The results suggest a decelerating, stratified, AGN driven outflow emerging
from the nucleus. The estimated mass outflow rate is one to two orders of
magnitude larger than the current black hole accretion rate needed to power the
AGN. Eight pure rotational H$_{2}$ emission lines are detected with intrinsic
widths ranging from FWHM $\sim 125-330$ km s$^{-1}$. We estimate a total mass
of warm H$_{2}$ gas of $\sim1.2\times10^{7}$M$_{\odot}$ in the central 100 pc.
The PAH features are extremely weak in the nuclear spectrum, but a $6.2\mu$m
PAH feature with an equivalent width $\sim0.07\mu$m and a flux of
$2.7\times10^{-17}$ W m$^{-2}$ is detected. The spectrum is steeply rising in
the mid-infrared, with a silicate strength $\sim0.02$, significantly smaller
than seen in most PG QSOs, but comparable to other Seyfert 1's. These early
MIRI mid-infrared IFU data highlight the power of JWST to probe the multi-phase
interstellar media surrounding actively accreting supermassive black holes.
