Flood Watch issued September 22 at 11:57AM MDT until September 24 at

* WHAT...Flash flooding caused by excessive rainfall continues to be
possible.

* WHERE...Portions of central, east central, north central,
northeast, northwest, southeast, and west central New Mexico,
including the following areas, in central New Mexico, Central
Highlands, Eastern Lincoln County, Estancia Valley, Lower Rio
Grande Valley, Middle Rio Grande Valley including the Albuquerque
Metro Area, San Agustin Plains and Adjacent Lowlands, Sandia and
Manzano Mountains including Edgewood, South Central Highlands,
South Central Mountains and Upper Tularosa Valley. In east central
New Mexico, De Baca County, Guadalupe County and Quay County. In
north central New Mexico, East Slopes Sangre de Cristo Mountains,
Espanola Valley, Far Northwest Highlands, Glorieta Mesa Including
Glorieta Pass, Jemez Mountains, Northern Sangre de Cristo
Mountains, Northwest Highlands, Santa Fe Metro Area, Southern
Sangre de Cristo Mountains, Tusas Mountains Including Chama and
Upper Rio Grande Valley. In northeast New Mexico, Eastern San
Miguel County, Far Northeast Highlands, Harding County, Johnson and
Bartlett Mesas Including Raton Pass, Northeast Highlands and Union
County. In northwest New Mexico, Chuska Mountains and Northwest
Plateau. In southeast New Mexico, Chaves County Plains and
Southwest Chaves County. In west central New Mexico, San Francisco
River Valley, Southwest Mountains, West Central Highlands, West
Central Mountains and West Central Plateau.

* WHEN...Through late Wednesday night.

* IMPACTS...Excessive runoff may result in flooding of rivers,
creeks, streams, and other low-lying and flood-prone locations.
Creeks and streams may rise out of their banks. Flooding may occur
in poor drainage and urban areas. Low-water crossings may be
flooded. Storm drains and ditches may become clogged with debris.
Extensive street flooding and flooding of creeks and rivers are
possible.

* ADDITIONAL DETAILS...
- A dangerous surge of monsoon moisture will arrive today and
Wednesday with widespread heavy rain.  Scattered occurrences of
flash flooding are likely, and there will probably be some main
stem river and tributary flooding later in the week, as the most
likely rain amount by Wednesday afternoon exceeds 1.5 inches many
locations along and east of the central mountain chain, and 1
inch in many locations westward to around Dulce, Gallup, and
Glenwood. Stronger storms will produce torrential rainfall at
rates over 2 inches per hour, and storms will train repeatedly in
succession over some locations, with locally heavier rain amounts
reaching over 4 inches over portions of southern, central, and
eastern New Mexico.  Heavy rain will likely continue Wednesday
night over north-central and eastern New Mexico, then showers and
storms with locally heavy rainfall are forecast to return to much
of the state again on Thursday.
- Rapid runoff and flash flooding will be most likely in complex
terrain, below recent burn scars, low-lying areas, urban areas,
normally dry arroyos, and near rivers and streams.  As the event
unfolds, locations with saturated ground will also become prone
to rapid runoff and flash flooding from additional rounds of
storms.
- http://www.weather.gov/safety/flood