132
FXUS01 KWBC 180648
PMDSPD
SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
248 AM EDT WED JUN 18 2025
VALID 12Z WED JUN 18 2025 - 12Z FRI JUN 20 2025
...SEVERE THUNDERSTORM RISKS FOR THE MIDWEST & LOWER GREAT LAKES
ON WEDNESDAY, & THE MID-ATLANTIC STATES THURSDAY...
...FIRE WEATHER CONCERNS AND/OR SIGNIFICANT HEAT FOR PORTIONS OF
THE WEST, ROCKIES, & CENTRAL HIGH PLAINS THROUGH FRIDAY...
..HEAT BUILDS IN THE EAST THROUGH THURSDAY
THE WEATHER MAKER FOR THE EASTERN HALF OF THE COUNTRY THROUGH
FRIDAY WILL BE A PROGRESSIVE UPPER LEVEL DISTURBANCE AND COLD
FRONT PUSHING ACROSS THE PLAINS AND THE EAST. A WAVE OF LOW
PRESSURE WAVE IN THE PLAINS IS FORECAST TO INTENSIFY AND TRACK
NORTHEAST THROUGH THE MIDWEST ON WEDNESDAY, WHICH BRINGS A THREAT
OF SEVERE THUNDERSTORMS AND FLASH FLOODING FROM THE SOUTHERN
PLAINS ACROSS THE MIDWEST/OHIO VALLEY AND INTO THE GREAT LAKES.
THE APPALACHIANS, MID-ATLANTIC STATES, AND NEW ENGLAND STATES WILL
SEE INCREASING HEAT THROUGH THURSDAY AS A RIDGE OF HIGH PRESSURE
BRIEFLY BUILDS ACROSS THE REGION AND A WARM FRONT LIFTS NORTH OF
THE AREA. RECORD HIGH TEMPERATURES...IN THE MID 90S...ARE
POSSIBLE IN SOUTHERN NEW ENGLAND ON THURSDAY. ONCE THE COLD FRONT
NEARS THE EAST ON THURSDAY, MORE WIDESPREAD SEVERE WEATHER WOULD
BE POSSIBLE WITHIN THE INCREASINGLY HOT AND HUMID AIR MASS ACROSS
THE MID-ATLANTIC STATES AND NEW ENGLAND. A WANING AREA OF
THUNDERSTORMS IS EXPECTED WITH TIME AS A COLD FRONT LEADS TO
COOLING AND DRIES THINGS OUT, CLEARING THE MIDWEST BY THURSDAY AND
THE MID-ATLANTIC AND NEW ENGLAND STATES BY FRIDAY. THE GULF COAST
AND SOUTHEAST MAINTAIN SCATTERED SHOWERS AND THUNDERSTORMS FOR THE
REMAINDER OF THE WORK WEEK.
A DEEP LAYER CYCLONE MOVES SOUTHEAST WITH TIME OUT OF THE
NORTHEAST PACIFIC, WITH THE CENTER MOVING INTO THE PACIFIC
NORTHWEST ON FRIDAY. IT WILL DRIVE A COLD FRONT EAST AND SOUTH
THROUGH THE PACIFIC NORTHWEST AND MONTANA BY FRIDAY MORNING. THE
COMBINATION OF WINDY AND DRY CONDITIONS BRINGS AN ELEVATED FIRE
WEATHER THREAT ACROSS INTERIOR PORTIONS OF THE NORTHWEST ON
WEDNESDAY (WHERE RED FLAG WARNINGS ARE IN EFFECT), WHICH SHIFTS
INTO THE GREAT BASIN ON THURSDAY AND FRIDAY (RED FLAG WARNINGS ARE
IN EFFECT FOR MUCH OF UTAH). SIGNIFICANT HEAT EXPANDS ACROSS THE
WEST INTO THE CENTRAL HIGH PLAINS ON WEDNESDAY THROUGH FRIDAY
AHEAD OF THE COLD FRONT AS THE RIDGE REBUILDS AHEAD OF THE DEEP
LAYER CYCLONE, THREATENING DAILY RECORD HIGH TEMPERATURES ACROSS
PORTIONS OF THE GREAT BASIN AND WESTERN SOUTH DAKOTA ON THURSDAY
AND FROM COLORADO NORTH AND EAST INTO NEBRASKA AND SOUTH DAKOTA ON
FRIDAY. HIGH TEMPERATURES WILL REMAIN 100F+ FOR THE DESERT
SOUTHWEST THROUGH THE REMAINDER OF THE WORK WEEK (DEATH VALLEY
COULD EXCEED 120F) WHERE EXTREME HEAT WARNINGS REMAIN IN EFFECT.
HEAT ADVISORIES REMAIN IN EFFECT FOR SOUTHERN AND WESTERN FRINGES
OF THE BIG BEND OF WESTERN TEXAS ON WEDNESDAY WHERE HIGH
TEMPERATURES OF 100-110F ARE FORECAST.
ROTH/MILLER
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