608
FXUS01 KWBC 290759
PMDSPD
SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
358 AM EDT MON APR 29 2024
VALID 12Z MON APR 29 2024 - 12Z WED MAY 01 2024
...SEVERE WEATHER AND FLASH FLOODING CONCERNS SHIFT INTO THE LOWER
MISSISSIPPI VALLEY TODAY...
...HIGH-ELEVATION SNOW IS FORECAST TO OVERSPREAD THE PACIFIC
NORTHWEST INTO THE NORTHERN ROCKIES MONDAY AND TUESDAY...
...WARMER THAN AVERAGE TEMPERATURES SPREAD FROM MIDWEST TO
MID-ATLANTIC; COLDER WEATHER RETURNS TO THE NORTHERN PLAINS AND
THE PACIFIC NORTHWEST WITH WARMING TREND ACROSS THE
CENTRAL/SOUTHERN HIGH PLAINS...
FORTUNATELY, THE WORST OF THE HEAVY RAIN AND THUNDERSTORMS SHOULD
BE BEHIND US BY THIS EVENING. THE COMPLEX OF STORMS RESPONSIBLE
FOR FLASH FLOOD EMERGENCIES OVER PARTS OF EASTERN TEXAS OVERNIGHT,
ARE FORECAST TO MOVE THROUGH SOUTHEASTERN TEXAS AND SOUTHERN
LOUISIANA TODAY. THE STORM PREDICTION CENTER HAS A MARGINAL RISK
(LEVEL 1/5) OUT FOR PARTS OF SOUTHERN LOUISIANA DUE TO THE THREAT
OF SEVERE WIND GUSTS AND HAIL. WE ISSUED A SLIGHT RISK (AT LEAST
15%) OF EXCESSIVE RAINFALL LEADING TO FLASH FLOODING FOR MUCH OF
CENTRAL/SOUTHERN LOUISIANA FOR TODAY DUE TO THE POTENTIAL FOR HIGH
RAIN RATES IN THAT AFOREMENTIONED LINE OF STORMS. MEANWHILE, SNOW
SHOWERS ARE LIKELY TO DEVELOP OVER THE HIGHER ELEVATIONS OF THE
NORTHWEST THIS MORNING AND CONTINUE INTO EARLY THIS EVENING BEFORE
TAPERING OFF. ANOTHER ROUND OF SNOW SHOWERS ARE EXPECTED TO OCCUR
ON TUESDAY AFTERNOON/EVENING OVER THE SAME AREA BENEATH ANOTHER
UPPER-LEVEL DISTURBANCE. SNOWFALL ON THE ORDER OF 6-12 INCHES WITH
ISOLATED HIGHER AMOUNTS ARE FORECAST TO ACCUMULATE OVER PARTS OF
THE CASCADES AND NORTHERN ROCKIES BY TUESDAY MORNING.
AN ORGANIZED LOW PRESSURE SYSTEM WILL SPREAD SHOWERS AND
THUNDERSTORMS ACROSS THE GREAT PLAINS AND MISSISSIPPI VALLEY ON
TUESDAY. THE STORM PREDICTION CENTER ISSUED A SLIGHT RISK (LEVEL
2/5) OF SEVERE THUNDERSTORMS FOR PARTS OF EASTERN NEBRASKA,
WESTERN IOWA, NORTHWEST MISSOURI, EASTERN KANSAS, SOUTHEAST SOUTH
DAKOTA AND SOUTHWEST MINNESOTA ON TUESDAY WITH A RISK OF VERY
LARGE HAIL, SEVERE WIND GUSTS AND A FEW TORNADOES BEING THE
PRIMARY THREATS. DOWNSTREAM OF THIS, SCATTERED TO ISOLATED SHOWERS
AND THUNDERSTORMS WILL MOVE THROUGH THE OHIO/TENNESSEE VALLEY AND
INTO THE EAST COAST ON TUESDAY. THE EXCESSIVE RAINFALL OUTLOOK
REMAINS MARGINAL (AT LEAST 5%) FOR THOSE AREAS AT THIS TIME.
TEMPERATURE-WISE, UPPER TROUGHS PROPAGATING THROUGH THE NORTHWEST
AND NORTHERN PLAINS/UPPER MIDWEST WILL KEEP THINGS COOLER THAN
AVERAGE TODAY. THINGS WARM UP A BIT ACROSS THE CENTRAL U.S. UP
INTO THE UPPER MIDWEST ON TUESDAY. TEMPERATURES WILL BE WELL ABOVE
AVERAGE ACROSS MUCH OF THE EAST COAST THIS WEEK WITH TODAY BEING
THE WARMEST OF THE BUNCH. THERE'S A CHANCE FOR SEVERAL STATIONS IN
THE MID-ATLANTIC TO TIE OR BREAK HIGH AND LOW TEMPERATURE RECORDS
TODAY AND TOMORROW WITH HIGHS IN THE 80S TO LOW 90S AND LOWS IN
THE 50S AND 60S.
KEBEDE
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