105
FXUS01 KWBC 171928
PMDSPD
SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
327 PM EDT MON APR 17 2023
VALID 00Z TUE APR 18 2023 - 00Z THU APR 20 2023
...LATE SEASON HEAVY SNOW EVENT TO DIMINISH MONDAY NIGHT ACROSS
THE UPPER LAKES REGION...
...HEAVY SNOWS POSSIBLE ACROSS THE PACIFIC NORTHWEST AND NORTHERN
ROCKIES MONDAY NIGHT AND TUESDAY AND INTO PORTIONS OF THE NORTHERN
HIGH PLAINS ON WEDNESDAY...
...BELOW AVERAGE TEMPERATURES EXPECTED ACROSS MOST AREAS TO THE
WEST OF THE ROCKIES, ALONG THE NORTHERN TIER FROM THE NORTHERN
PLAINS, UPPER LAKES TO NORTHERN NEW ENGLAND, WHILE ABOVE AVERAGE
TEMPERATURES STRETCH FROM THE PLAINS TO MUCH OF THE EAST COAST...
...ELEVATED TO CRITICAL FIRE WEATHER THREAT FOR THE SOUTHERN HIGH
PLAINS...
THE LATE SEASON SNOWSTORM THAT HAS BROUGHT HEAVY SNOWFALL TOTALS
OF BETWEEN 6 AND 18 INCHES TO PORTIONS OF MINNESOTA, WISCONSIN AND
THE UPPER PENINSULA OF MICHIGAN WILL CONTINUE TO DIMINISH MONDAY
NIGHT AS THE STORM LIFTS SLOWLY NORTHEASTWARD INTO SOUTHEASTERN
CANADA. WHILE SNOWFALL RATES AND TOTALS WILL BE DECREASING MONDAY
NIGHT, WIDESPREAD SNOW SHOWERS WILL DEVELOP DOWNWIND OF THE GREAT
LAKES AS COLD NORTHWESTERLY TO WESTERLY WINDS FLOW ACROSS THE
GREAT LAKES, THIS WILL SUPPORT LIGHT TO MODERATE SNOWFALL TOTALS
OF 2 TO 4 INCHES ACROSS THE UPPER PENINSULA OF MICHIGAN, THE
NORTHERN LOWER PENINSULA OF MICHIGAN AND ACROSS NORTHEAST OHIO,
NORTHWEST PENNSYLVANIA AND FAR WESTERN NEW YORK STATE.
ACCUMULATING SPRINGS SNOWS ARE ALSO POSSIBLE OVER THE NEXT TWO
DAYS AS A COLD FRONT PUSHES INLAND FROM THE PACIFIC NORTHWEST INTO
THE NORTHERN ROCKIES MONDAY NIGHT INTO TUESDAY. SNOWFALL TOTALS
IN EXCESS OF A FOOT LIKELY OVER THE NEXT TWO DAYS THROUGH MUCH OF
THE WASHINGTON AND OREGON CASCADES AND OLYMPIC RANGE, WHILE TOTALS
OVER 6 INCHES ARE POSSIBLE THROUGH THE NORTHERN SIERRA AND
NORTHERN ROCKIES. THIS SYSTEM WILL THEN PUSH EASTWARD INTO THE
NORTHERN HIGH PLAINS ON WEDNESDAY WHERE IT WILL HELP TO DEEPEN A
STORM SYSTEM ACROSS WESTERN SOUTH DAKOTA AND WESTERN NORTH DAKOTA.
WHILE PRECIPITATION WITH THIS LOW MAY BEGIN AS RAIN ACROSS MUCH
OF THE NORTHERN PLAINS, IT SHOULD CHANGE TO SNOW ON THE WESTERN
SIDE OF THE STORM WITH HEAVY SNOWS POSSIBLE ACROSS FAR NORTHEAST
MONTANA INTO NORTHWESTERN NORTH DAKOTA. IT ADDITION TO THE HEAVY
SNOWS, INCREASING WINDS MAY PRODUCE NEAR BLIZZARD OR BLIZZARD
CONDITIONS WEDNESDAY AFTERNOON INTO WEDNESDAY EVENING ACROSS FAR
NORTHEAST MONTANA INTO NORTHWEST NORTH DAKOTA, RESULTING IN VERY
HAZARDOUS TRAVEL CONDITIONS.
IN THE WAKE OF THE ABOVE MENTIONED COLD FRONT MOVING INLAND FROM
THE PACIFIC NORTHWEST, TEMPERATURES ARE EXPECTED TO REMAIN BELOW
AVERAGE OVER THE NEXT TWO DAYS ACROSS MOST AREAS TO THE WEST OF
THE ROCKIES. BELOW AVERAGE TEMPERATURES ALSO LIKELY ACROSS THE
NORTHERN TIER FROM THE NORTHERN PLAINS, ACROSS THE UPPER LAKES,
NORTHERN NEW YORK STATE AND INTO NORTHERN NEW ENGLAND. IN
CONTRAST, ABOVE AVERAGE TEMPERATURES ARE EXPECTED ACROSS THE
CENTRAL TO SOUTHERN PLAINS, EAST THROUGH THE MIDDLE TO LOWER
MISSISSIPPI VALLEY AND INTO MUCH OF THE EAST COAST. IN ADDITION
TO THE WARM CONDITIONS ACROSS THE SOUTHERN PLAINS, DRY WEATHER AND
GUSTY WINDS WILL KEEP THE FIRE WEATHER THREAT ELEVATED TO CRITICAL
OVER THE NEXT FEW DAYS ACROSS THE SOUTHERN HIGH PLAINS FROM NEW
MEXICO, WEST TEXAS, THE TEXAS/OKLAHOMA PANHANDLE, WESTERN KANSAS
AND SOUTHEASTERN COLORADO.
ORAVEC
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