637
FXUS01 KWBC 020851
PMDSPD
SHORT RANGE FORECAST DISCUSSION
NWS HYDROMETEOROLOGICAL PREDICTION CENTER CAMP SPRINGS MD
451 AM EDT WED MAY 02 2012
VALID 12Z WED MAY 02 2012 - 12Z FRI MAY 04 2012
...THE STORM PREDICTION CENTER HAS ISSUED A SLIGHT RISK OF SEVERE
THUNDERSTORMS FROM PARTS OF THE CENTRAL PLAINS ARCING ACROSS THE
GREAT LAKES/OHIO VALLEY TO THE MID-ATLANTIC WITH A REGION OF
MODERATE RISK OF SEVERE WEATHER OVER THE MIDDLE MISSOURI VALLEY
...
...HEAVY RAIN IS POSSIBLE FROM THE MIDDLE MISSOURI VALLEY TO THE
UPPER GREAT LAKES AND PARTS OF THE NORTHWEST COAST AS WELL AS THE
CENTRAL GULF COAST...
A WAVE OF LOW PRESSURE OVER WESTERN ONTARIO WILL MOVE
NORTHEASTWARD DEEPER INTO CANADA THROUGH THURSDAY. THE ONE OF THE
ASSOCIATED FRONT WILL BECOME QUASI-STATIONARY FROM THE
MID-ATLANTIC COAST NORTHWARD ACROSS NEW YORK STATE WHILE THE OTHER
FRONT WILL BECOME QUASI-STATIONARY FROM THE UPPER GREAT LAKES TO
THE CENTRAL PLAINS. BETWEEN THESE TWO FRONTS SHOWERS AND
THUNDERSTORMS WILL DEVELOP FROM THE CENTRAL PLAINS ACROSS THE
GREAT LAKES TO THE MID-ATLANTIC/NORTHEAST THROUGH THURSDAY.
MEANWHILE ... AN UPPER-LEVEL LOW OVER THE GULF COAST AND A PLUME
OF MOISTURE WILL AID IN PRODUCING SHOWERS AND THUNDERSTORMS OVER
PARTS OF THE SOUTHERN TIP OF FLORIDA AND THE CENTRAL GULF COAST ON
WEDNESDAY AND THURSDAY.
ELSEWHERE ... UPPER-LEVEL ENERGY MOVING ACROSS THE THE NORTHERN
INTERMOUNTAIN REGION AND THE NORTHERN ROCKIES WILL TRIGGER LIGHT
SNOW OVER PARTS OF THE REGION ON WEDNESDAY MORNING. BY WEDNESDAY
AFTERNOON THE ENERGY WILL PRODUCE SHOWERS AND THUNDERSTORMS OVER
PARTS OF THE NORTHERN HIGH PLAINS. OVERNIGHT WEDNESDAY A NEW
PACIFIC STORM WILL BEGIN TO COME ONSHORE OVER THE WEST COAST. THE
SYSTEM WILL PRODUCE LIGHT TO MODERATE RAIN OVER PARTS OF THE
PACIFIC NORTHWEST ON THURSDAY MORNING. THE RAIN WILL MOVE INLAND
TO PARTS OF THE NORTHERN ROCKIES/NORTHERN HIGH PLAINS BY THURSDAY
EVENING.
ZIEGENFELDER
GRAPHICS AVAILABLE AT WWW.HPC.NCEP.NOAA.GOV
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page