Weeks of persistent flooding managed to reverse severe drought conditions across parts of New Mexico.
But that saturated ground now leaves the region vulnerable to increased runoff and flood risks when spring snowmelt arrives, kob.com reported.
NOAA’s latest seasonal outlook points toward a wetter-than-average winter across the Southwest. A strong to very strong El Niño is expected to persist into early next year, steering the primary storm track directly toward the southern United States.
That atmospheric setup increases the chance of moisture. However, it falls short of guaranteeing a heavy mountain snowpack. Fall rains have already replenished vital soil moisture levels across the state.
If that moisture persists through the winter months, a larger percentage of future snowmelt will translate directly into surface runoff.
Families in the area do not necessarily need to prepare for catastrophic flooding next spring. Even so, the conditions give New Mexico officials heightened reason for concern compared to a typical year, according to kob.com.
Historical precedent shows why planners are watching the weather patterns closely. Major Rio Grande flooding struck during the El Niño winter of 1941. Heavy snowmelt following the El Niño pattern of 1973 severely strained Albuquerque’s existing levee system.
Modern flood-control infrastructure changes that equation significantly today. Even with upgraded systems in place, the ultimate outcome will depend heavily on the total size of the snowpack and the speed at which it eventually melts.
A gradual, steady thaw could provide months of valuable water resources for the state. Conversely, rapid temperature spikes or heavy rain falling directly on top of existing snow could substantially increase local flood dangers.
