676
FXUS01 KWBC 282005
PMDSPD
SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
400 PM EDT FRI AUG 28 2026
VALID 00Z SAT AUG 29 2026 - 00Z MON AUG 31 2026
...SLIGHT RISK OF SEVERE THUNDERSTORMS OVER PARTS OF THE NORTHERN
PLAINS AND THE GREAT BASIN ON SATURDAY...
...SLIGHT RISK OF EXCESSIVE RAINFALL ACROSS PORTIONS OF ARIZONA
THIS WEEKEND...
A FRONTAL SYSTEM IS FORECAST TO GRADUALLY SLIDE OFF NEW ENGLAND
AND THE MID-ATLANTIC COAST THROUGH THE WEEKEND, BRINGING FINE AND
COOLER THAN NORMAL TEMPERATURES FOR LATE AUGUST FOR THE ENTIRE
NORTHEASTERN QUARTER OF THE COUNTRY. MEANWHILE, THE TRAILING
PORTION OF THE FRONT WILL REMAIN NEARLY STATIONARY ACROSS THE
SOUTHEAST, WHERE SHOWERS AND THUNDERSTORMS ARE EXPECTED TO BE MOST
ACTIVE DURING THE LATE-DAY HOURS. A WEAK LOW PRESSURE AREA JUST
OFF THE CENTRAL TO EASTERN GULF COAST WILL ALSO KEEP A GOOD CHANCE
OF SHOWERS AND THUNDERSTORMS IN THE VICINITY FOR THE NEXT COUPLE
OF DAYS. ANY HEAVY DOWNPOURS ASSOCIATED WITH THESE STORMS SHOULD
BRING MAINLY LOCALIZED AREAS OF FLASH FLOODING, WITH URBAN AREAS,
ROADS, SMALL STREAMS, AND LOW-LYING AREAS BEING THE MOST
VULNERABLE.
MEANWHILE, MONSOONAL SHOWERS AND THUNDERSTORMS WILL BE MOST ACTIVE
DURING THE LATE-DAY HOURS ACROSS THE FOUR CORNERS TO THE GREAT
BASIN WHERE A SLIGHT RISK OF EXCESSIVE RAINFALL IS ANTICIPATED
THROUGH THIS WEEKEND. MEANWHILE, AN UPPER-LEVEL TROUGH EDGING
INTO THE PACIFIC NORTHWEST WILL INTERACT WITH A WEAK FRONT AND THE
PRE-FRONTAL MONSOONAL MOISTURE TO KEEP A GOOD CHANCE OF SHOWERS
AND SOME EMBEDDED THUNDERSTORMS FROM THE GREAT BASIN TO THE
NORTHERN ROCKIES WHERE A MARGINAL RISK OF EXCESSIVE RAINFALL IS
FORECAST THROUGH THE WEEKEND. LOCALLY HEAVY RAIN MAY LEAD TO
LOCALIZED RAPID RUNOFF FROM STREAMS, RESULTING IN FLASH FLOODING.
THE TROUGH PUSHING THROUGH THE PACIFIC NORTHWEST WILL FIRST BRING
RAIN SHOWERS FROM WEST TO EAST CLOSER TO THE CANADIAN BORDER THIS
WEEKEND. A LOW PRESSURE SYSTEM WILL THEN GRADUALLY DEVELOP OVER
THE NORTHERN HIGH PLAINS. A SLIGHT RISK OF SEVERE THUNDERSTORMS
IS ANTICIPATED OVER PARTS OF THE NORTHERN PLAINS AND THE GREAT
BASIN ON SATURDAY INTO EARLY SUNDAY AS THE UPPER TROUGH EDGES
CLOSER AND THE LOW PRESSURE SYSTEM DEVELOPS AND EXPANDS IN SIZE.
OTHERWISE, SOME SHOWERS AND A FEW EMBEDDED THUNDERSTORMS CAN BE
EXPECTED ACROSS THE GREAT LAKES TO NORTHERN NEW ENGLAND AS A COLD
FRONT DIPS INTO THE REGION THROUGH THIS WEEKEND.
KONG
GRAPHICS AVAILABLE AT
HTTPS://WWW.WPC.NCEP.NOAA.GOV/BASICWX/BASICWX_NDFD.PHP
EXTREME HEAT KEY MESSAGES AVAILABLE AT:
HTTPS://WWW.WPC.NCEP.NOAA.GOV/KEY_MESSAGES/LATESTKEYMESSAGE_1.PNG
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