ALBUQUERQUE, NEW MEXICO — A look at the week ahead shows multiple regions facing elevated heavy rain and flash flooding risks, according to a Forecast Precipitation outlook from NOAA and the National Weather Service, valid Monday morning, September 21, through Saturday morning, September 26, 2026, and issued at 0955Z Monday. Multiple rounds of moderate to locally heavy rain will impact portions of the Appalachians and Mid-Atlantic, while a separate multi-day heavy rain event will pose a genuine flash flood threat in New Mexico beginning Tuesday.
Albuquerque and Santa Fe Face a Multi-Day Flash Flood Threat Starting Tuesday
If you’re in Albuquerque or Santa Fe, the week’s most concerning setup targets your area directly, with a multi-day heavy rain event beginning Tuesday and continuing through much of the outlook period. The precipitation map shows a concentrated pocket of the deepest shading anywhere in the country centered right over north-central New Mexico, reflecting totals that could run well beyond what this typically arid region sees in an entire month, all compressed into just a few days.
Roswell and Las Cruces Also Sit Within This Week’s Heaviest New Mexico Rain
Farther south, Roswell and Las Cruces remain within the broader corridor of elevated rainfall tracking across southern New Mexico this week. If you’re anywhere across this stretch, the same repeated rounds of heavy rain responsible for the Albuquerque threat are expected to continue targeting your communities as well, keeping the flash flood danger active across multiple days rather than a single afternoon.
Nashville, Knoxville and Atlanta Face Isolated Severe Wind Gusts This Afternoon
Separate from the multi-day New Mexico threat, thunderstorms with isolated severe wind gusts will be possible this afternoon from parts of the Southeast into the southern and central Appalachians. If you’re in Nashville, Knoxville or Atlanta, keep an eye on the sky through the afternoon hours, since any storm that manages to intensify within this corridor carries the potential for a sudden, damaging wind gust.
Birmingham and Charlotte Sit Along the Southern Edge of Today’s Wind Threat
The same corridor extends to include Birmingham, Alabama, and Charlotte, North Carolina, both positioned within today’s zone for isolated severe thunderstorms. Residents across this stretch of the Southeast and Carolinas should treat today’s afternoon and evening as an active weather window, even though the overall setup remains scattered rather than a widespread severe outbreak.
Washington, Philadelphia and New York Face Multiple Rounds of Heavy Rain This Week
Across the Mid-Atlantic, Washington, D.C., Philadelphia and New York City are all forecast to see multiple rounds of moderate to locally heavy rain through the week. The precipitation map shows some of the deepest shading in the entire country stretching along this coastal corridor, with totals building through repeated rounds of rain rather than a single storm, tied in part to the powerful offshore system expected to intensify near the coast later in the week.
Long Island and Coastal New England See Some of the Highest Totals Nationwide
Along the immediate coast, Long Island and communities up through coastal New England, including areas near Boston, show some of the most intense shading anywhere on this week’s map, reflecting the heaviest rainfall potential in the country outside of New Mexico. If you’re anywhere along this stretch of coastline, this week’s combination of repeated rain and a strengthening offshore storm makes for a genuinely wet, potentially disruptive stretch of days.
Roanoke and Asheville Watch Multiple Rounds Move Through the Appalachians
Inland across the mountains, Roanoke, Virginia, and Asheville, North Carolina, both fall within the corridor forecasters flagged for multiple rounds of rain through the Appalachians. Because mountainous terrain can enhance rainfall totals and accelerate runoff, residents across this stretch should watch for the potential of localized flooding in low-lying valleys and near streams even where individual rounds of rain don’t seem especially dramatic on their own.
Miami and South Florida See Their Own Pocket of Heavy Rain
Separate from the main Appalachian and Mid-Atlantic corridor, the map shows another concentrated area of heavy rainfall potential over South Florida, including Miami and Fort Lauderdale. If you’re in this part of the state, expect this week’s pattern to bring meaningfully more rain than the moderate totals forecast across much of the rest of the Southeast.
Chicago, Minneapolis and the Great Lakes Stay Largely Dry This Week
Not every part of the country shares in this week’s active pattern. The map shows a broad stretch of white, indicating minimal rainfall, across the Great Lakes and Upper Midwest, including Chicago, Detroit and Minneapolis. If you’re anywhere across this region, this week should stay comparatively quiet and dry, standing in sharp contrast to the multiple flood-threat zones unfolding elsewhere in the country.
Denver and the Interior West Also See Limited Rainfall This Week
Similarly, much of the interior West, including Denver and the surrounding Front Range, along with large stretches of Wyoming, Idaho and the Great Basin, shows minimal shading on this week’s map. Residents across this region should expect a relatively dry stretch, even as the neighboring New Mexico flash flood threat unfolds just to the south.
What Residents Across These Active Zones Should Do This Week
If you’re anywhere within this week’s highlighted threats, from Albuquerque and Las Cruces facing a multi-day flash flood danger, to Nashville, Knoxville and Atlanta watching for isolated severe wind gusts today, to Washington, Philadelphia and New York bracing for repeated rounds of heavy rain, stay weather aware through the coming days. Avoid driving through flooded roadways, secure loose outdoor items ahead of any thunderstorm activity, and keep a close eye on updated forecasts as this active, multi-region pattern continues playing out through the week.
