770
FXUS01 KWBC 141848
PMDSPD
SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
246 PM EDT MON SEP 14 2026
VALID 00Z TUE SEP 15 2026 - 00Z THU SEP 17 2026
...A STRENGTHENING FRONTAL SYSTEM WILL BRING WIDESPREAD SHOWERS
AND THUNDERSTORMS FROM THE INTERMOUNTAIN WEST AND ROCKIES TO THE
PLAINS AND UPPER MIDWEST OVER THE NEXT FEW DAYS...
...DANGEROUS LATE-SUMMER HEAT CONTINUES ACROSS THE SOUTH-CENTRAL
U.S. THROUGH MIDWEEK...
AS A SPRAWLING AREA OF HIGH PRESSURE BRINGS A COOLER AND DRIER AIR
MASS TO MUCH OF THE EASTERN U.S. THE NEXT COUPLE OF DAYS, THE
WEATHER PATTERN TURNS MORE ACTIVE ACROSS THE WESTERN AND CENTRAL
U.S. THROUGH MIDWEEK. STRENGTHENING SOUTHERLY FLOW AHEAD OF A
DEEPENING LOW PRESSURE SYSTEM TRACKING INTO THE NORTHERN PLAINS
WILL DRAW RICH GULF MOISTURE NORTHWARD INTO THE HEARTLAND, SETTING
THE STAGE FOR SEVERAL ROUNDS OF SHOWERS AND THUNDERSTORMS ACROSS
THE NORTH-CENTRAL U.S. SCATTERED TO NUMEROUS INSTANCES OF FLASH
FLOODING ALONG WITH POSSIBLE SEVERE WEATHER WILL BE CONCERNS
WITHIN THIS VERY MOIST AND UNSTABLE ENVIRONMENT. WHILE THE COLD
FRONT IS FORECAST TO SLOWLY SINK SOUTHWARD, PERSISTENT SOUTHERLY
INFLOW INTO THE BOUNDARY WILL KEEP UNSETTLED WEATHER LINGERING
ACROSS THE PLAINS, ENHANCING THE FLASH FLOOD THREAT THROUGH
MIDWEEK. ADDITIONALLY, INCREASING MONSOONAL MOISTURE WILL LEAD TO
MORE WIDESPREAD COVERAGE OF AFTERNOON SHOWERS AND THUNDERSTORMS
ACROSS THE SOUTHERN ROCKIES AND FOUR CORNERS THIS WEEK, SUPPORTING
DAILY CHANCES OF SCATTERED FLASH FLOODING.
MEANWHILE, AN UPPER-LEVEL RIDGE MOVING ACROSS THE MID/LOWER
MISSISSIPPI VALLEY WILL MAINTAIN DANGEROUSLY HOT WEATHER WITH
HIGHS WELL INTO THE 90S AND LOW 100S THIS WEEK, WHICH COULD SET
SEVERAL DAILY HIGH TEMPERATURE RECORDS. COMBINED WITH LITTLE
RELIEF AT NIGHT, SEVERAL DAYS OF MAJOR TO EXTREME HEATRISK ARE
LIKELY, WHICH WOULD INCREASE THE LIKELIHOOD OF HEAT-RELATED
ILLNESSES.
MILLER/ASHERMAN
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