440
FXUS01 KWBC 150818
PMDSPD
SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
400 AM EDT WED APR 15 2026
VALID 12Z WED APR 15 2026 - 12Z FRI APR 17 2026
...LATE SEASON SNOW FOR THE CASCADES AND NORTHERN ROCKIES BUT
APRIL HEAT FOR THE MID-ATLANTIC...
...A SLIGHT RISK OF SEVERE THUNDERSTORMS INTO TONIGHT OVER FROM
THE SOUTHERN PLAINS THROUGH THE MIDWEST AND INTO THE LOWER GREAT
LAKES...
...A SLIGHT RISK OF SEVERE THUNDERSTORMS ON THURSDAY ACROSS THE
INTERIOR NORTHEAST...
A WAVY FRONT CONTINUES TO UNDULATE ACROSS THE GREAT LAKES THROUGH
NEW ENGLAND. STRONG TO SEVERE THUNDERSTORMS ARE PERIODICALLY
TRIGGERED AS LOW PRESSURE WAVES FORM NEAR THE FRONT AND THEN TRACK
EASTWARD. MEANWHILE, A STRONG RIDGE OF HIGH PRESSURE EXTENDING
WEST FROM BERMUDA WILL ONLY ALLOW THE TRAILING PORTION OF THE
FRONT TO SLOWLY NUDGE EASTWARD OVER THE NEXT COUPLE OF DAYS.
UNDER THIS PATTERN, MORE STRONG TO SEVERE THUNDERSTORMS WILL
REDEVELOP TODAY AND INTO TONIGHT ACROSS THE CENTRAL AND SOUTHERN
PLAINS MAINLY TO THE EAST OF A DRYLINE. THE HAZARDS ASSOCIATED
WITH THESE THUNDERSTORMS ARE FREQUENT LIGHTNING, DAMAGING WIND
GUSTS, HAIL, AND A FEW TORNADOES. BY THURSDAY, THIS WEATHER
PATTERN WILL BEGIN TO BREAK DOWN WITH LESS WIDESPREAD COVERAGE OF
THUNDERSTORMS AS THEY MOVE ACROSS THE MID-MISSISSIPPI VALLEY. THE
WAVY FRONT ACROSS THE GREAT LAKES AND NEW ENGLAND WILL TAKE ONE
MORE DAY TO BREAK DOWN. THEREFORE, STRONG TO SEVERE THUNDERSTORMS
ARE EXPECTED TO BE MOST ACTIVE ON THURSDAY ACROSS UPSTATE NEW YORK
WHILE ROUNDS OF SHOWERS AND EMBEDDED THUNDERSTORMS WILL CONTINUE
TO EXTEND ACROSS THE LOWER GREAT LAKES THROUGH INTERIOR NEW
ENGLAND THROUGH THURSDAY. THESE THUNDERSTORM ACTIVITIES SHOULD
FINALLY BE TAPERING OFF ACROSS THE LOWER GREAT LAKES THURSDAY
NIGHT BUT THEY WILL CONTINUE FOR NEW ENGLAND INTO FRIDAY MORNING.
OVER THE PACIFIC NORTHWEST, THE ARRIVAL OF A COLD FRONT EARLY THIS
MORNING IS SIGNALING THE BEGINNING OF A COLD SNAP THAT WILL SWEEP
THROUGH A GOOD PORTION OF WESTERN U.S. REACHING INTO THE NORTHERN
PLAINS BY FRIDAY MORNING. TEMPERATURES WILL BE DRASTICALLY COLDER
BEHIND THIS POTENT FRONT ALONG WITH A GOOD DOSE OF MOUNTAIN SNOW
AND WINDY CONDITIONS. A ROUND OF COASTAL RAIN WILL DEVELOP ALONG
THE NORTHWEST COAST THROUGH TODAY AS WELL. MEANWHILE, A FOOT OF
NEW SNOW CAN BE EXPECTED ALONG THE CASCADES AND THROUGH THE
NORTHERN ROCKIES BEGINNING LATER TODAY, REACHING INTO THE CENTRAL
ROCKIES BY FRIDAY MORNING. RAIN IS EXPECTED TO CHANGE OVER TO
SNOW ACROSS THE NORTHERN PLAINS BEHIND THE COLD FRONT EARLY ON
FRIDAY AS A LOW PRESSURE SYSTEM DEVELOPS OVER THE CENTRAL HIGH
PLAINS.
THE BERMUDA HIGH THAT HELPS FEEDING THE MOISTURE INTO THE SOUTHERN
PLAINS TO FUEL THE THUNDERSTORMS WILL ALSO BRING ANOMALOUS WARMTH
INTO THE EASTERN U.S. WIDESPREAD RECORD HIGH TEMPERATURES ARE
FORECAST THIS AFTERNOON ACROSS THE EAST-CENTRAL U.S. MAXIMIZING
WITH 90-DEGREE-PLUS HEAT OVER THE MID-ATLANTIC. THE HEAT IS
FORECAST TO CONTINUE INTO THURSDAY BEFORE A SLIGHT MODERATION IN
TEMPERATURES ARRIVES ON FRIDAY AS THE BERMUDA HIGH BEGINS TO BREAK
DOWN.
KONG
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