412
FXUS01 KWBC 182012
PMDSPD
SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
412 PM EDT THU JUL 18 2024
VALID 00Z FRI JUL 19 2024 - 00Z SUN JUL 21 2024
..DANGEROUS HEAT TO EXPAND ACROSS THE WESTERN U.S THIS WEEKEND
...MULTIPLE AREAS OF UNSETTLED WEATHER FROM THE FOUR CORNERS TO
UPPER MIDWEST; SOUTHEAST TO MID-ATLANTIC...
THE MAIN HEADLINE FOR THE NATION'S WEATHER STORY THIS AFTERNOON
REMAINS DANGEROUS HEAT EXPECTED TO BUILD ACROSS THE WESTERN U.S
THIS WEEKEND, WHERE 38 MILLION PEOPLE ARE UNDER HEAT ALERTS FROM
THE INTERIOR PACIFIC NORTHWEST TO THE DESERT SOUTHWEST AND
CALIFORNIA. AS AN UPPER-LEVEL RIDGE AMPLIFIES TOMORROW, DAILY HIGH
TEMPERATURES WILL BEGIN THE CLIMB IN THE 90S AND TRIPLE-DIGITS,
WITH LITTLE OVERNIGHT RELIEF EXPECTED. THESE BRUTAL TEMPERATURES
COULD CHALLENGE NUMEROUS RECORDS ACROSS THE REGION BEGINNING THIS
WEEKEND, ULTIMATELY LEADING TO DANGEROUS CONDITIONS AS THE HEAT
LOOKS TO STICK AROUND BEYOND THIS WEEKEND.
MEANWHILE, MONSOONAL SHOWERS AND THUNDERSTORMS WILL CONTINUE
THROUGH THIS WEEKEND EAST OF THE FOUR CORNERS REGION, WHICH WILL
BLEED INTO THE HIGH PLAINS AND UPPER-MIDWEST AS SOME MONSOONAL
MOISTURE AND DISTURBANCES DRIVE ADDITIONAL THUNDERSTORMS ALONG AND
AHEAD OF A LEE-SIDE TROUGH. NOT TO BE OUTDONE, A LINGERING FRONTAL
BOUNDARY FORECAST TO MEANDER NORTHWARD WILL ALSO FORCE DAILY
THUNDERSTORMS ACROSS THE SOUTHEAST AND MID-ATLANTIC. AS IS USUALLY
THE CASE THIS TIME OF YEAR, ISOLATED TO SCATTERED FLASH FLOODING
AND SEVERE WEATHER MAY RESULT FROM THE STRONGEST STORMS OWING TO
THE COPIOUS MOISTURE AND INSTABILITY AVAILABLE.
ASHERMAN
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