187
FXUS01 KWBC 191908
PMDSPD
SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
307 PM EDT WED MAR 19 2025
VALID 00Z THU MAR 20 2025 - 00Z SAT MAR 22 2025
...MAJOR LATE WINTER/EARLY SPRING SNOWSTORM TO PUSH INTO THE UPPER
MISSISSIPPI VALLEY AND GREAT LAKES...
...SEVERE WEATHER POSSIBLE THIS EVENING ACROSS MUCH OF ILLINOIS
AND INDIANA...
...WINDY CONDITIONS ACROSS THE SOUTHERN PLAINS WILL CONTINUE TO
SUPPORT A FIRE WEATHER THREAT...
...THE FIRST DAY OF SPRING WILL SEE MUCH ABOVE AVERAGE
TEMPERATURES ALONG THE EAST COAST AND ACROSS THE NORTHERN PLAINS,
WHILE BELOW AVERAGE TEMPERATURES ARE EXPECTED ACROSS THE WEST,
SOUTH, MISSISSIPPI, TENNESSEE AND OHIO VALLEYS...
..HEAVY PRECIP ON TAP FOR THE PACIFIC NORTHWEST AND NEW ENGLAND
WHILE SPRING WILL BEGIN EARLY THURSDAY MORNING, IMPACTFUL WINTER
WEATHER WILL CONTINUE ASSOCIATED WITH THE STRONG LOW MOVING FROM
THE UPPER MISSISSIPPI VALLEY INTO THE GREAT LAKES THIS
EVENING/TONIGHT AND INTO SOUTHEAST CANADA BY EARLY THURSDAY. THIS
STORM HAS BEEN RESPONSIBLE FOR HEAVY SNOWS AND BLIZZARD CONDITIONS
ACROSS PORTIONS OF THE PLAINS OVER THE PAST 24 HOURS AND WILL
CONTINUE TO PRODUCE HEAVY SNOWS THIS EVENING/TONIGHT FROM EASTERN
WISCONSIN, ACROSS THE FAR NORTHWESTERN PORTION OF THE LOWER
PENINSULA OF MICHIGAN AND THE EASTERN PORTION OF THE UPPER
PENINSULA OF MICHIGAN. SNOWFALL TOTALS ACROSS THESE AREAS EXPECTED
TO BE IN THE 4 TO 8"+ RANGE. BLIZZARD CONDITIONS WILL BE
DIMINISHING LATE THIS AFTERNOON INTO THIS EVENING FROM WEST TO
EAST ACROSS PORTIONS OF THE CENTRAL PLAINS INTO THE UPPER
MISSISSIPPI VALLEY AS THE STORM MOVES NORTHEAST AND BEGINS TO
WEAKEN. TRAVEL WILL REMAIN HAZARDOUS WITH THIS SYSTEM ALONG WITH
THE RISK OF POWER OUTAGES.
TO THE SOUTHEAST OF THE STRONG LOW MOVING TOWARD THE GREAT LAKES,
THUNDERSTORMS ARE LIKELY THIS EVENING ALONG THE ASSOCIATED COLD
FRONT THAT WILL BE PUSHING FROM ILLINOIS INTO INDIANA AND OHIO.
THESE STORMS WILL HAVE THE POTENTIAL TO PRODUCE SEVERE WEATHER,
WITH TORNADOES, HIGH WINDS AND LARGE HAIL ALL A POSSIBILITY ACROSS
MUCH OF ILLINOIS, INDIANA INTO FAR WESTERN OHIO. OVERALL,
PRECIPITATION IS NOT EXPECTED TO BE HEAVY ALONG AND AHEAD OF THE
COLD FRONT AS IT PUSHES EASTWARD FROM THE MID-WEST/OH VALLEY AND
INTO THE MID-ATLANTIC. HOWEVER, A NEW LOW FORMING ALONG THIS COLD
FRONT ACROSS SOUTHERN NEW ENGLAND EARLY FRIDAY MORNING WILL
PRODUCE INCREASING CHANCES OF HEAVIER RAINS/HIGHER ELEVATION
SNOWS, FROM EASTERN NEW YORK STATE INTO SOUTHERN AND CENTRAL NEW
ENGLAND DURING FRIDAY.
IN THE WAKE OF THE STRONG STORM MOVING INTO THE GREAT LAKES, WINDY
CONDITIONS EXPECTED ACROSS THE SOUTHERN PLAINS INTO THE LOWER TO
MID MISSISSIPPI VALLEY. THIS WILL SUPPORT THE CONTINUATION OF A
FIRE WEATHER THREAT FROM THE COMBINATION OF DRY CONDITIONS, LOW
RELATIVE HUMIDITIES AND HIGH WINDS. RED FLAG WARNINGS ARE
CURRENTLY IN EFFECT ACROSS MUCH OF THESE REGIONS.
IN CONTRAST, A SERIES OF FRONTAL BOUNDARIES MOVING FROM THE
NORTHEAST PACIFIC INTO THE PACIFIC NORTHWEST WILL SUPPORT TWO DAYS
OF HEAVY PRECIPITATION, LOWER ELEVATION RAINS AND HEAVY MOUNTAIN
SNOWS, FROM THE WASHINGTON/OREGON CASCADES, WEST TO THE
WASHINGTON/OREGON COASTS AND ACROSS THE FAR NORTHERN ROCKIES OF
IDAHO.
TEMPERATURES WISE, THE FIRST DAY OF SPRING WILL SEE MUCH ABOVE
AVERAGE TEMPERATURES ALONG THE EAST COAST AHEAD OF THE EASTWARD
MOVING COLD FRONT, AND MUCH ABOVE AVERAGE TEMPERATURES OVER THE
NORTHERN PLAINS. BELOW AVERAGE TEMPERATURES EXPECTED FOR THE
FIRST DAY OF SPRING ACROSS MUCH OF THE WEST, SOUTH, MISSISSIPPI,
TENNESSEE AND OHIO VALLEYS.
ORAVEC
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