Prognostic Meteorological Discussion
Issued by NWS

Current Version | Previous Version | Graphics & Text | Print | Product List | Glossary Off
Versions: 1 2 3 4 5

000
FXUS01 KWBC 171126
PMDSPD

SHORT RANGE FORECAST DISCUSSION...AMENDED
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
725 AM EDT WED SEP 17 2014

VALID 12Z WED SEP 17 2014 - 12Z FRI SEP 19 2014

...HEAVY RAIN POSSIBLE OVER PARTS OF THE SOUTHWEST/SOUTHERN
ROCKIES...

...HEAVY RAIN POSSIBLE OVER PARTS OF THE WESTERN GULF COAST...

MOISTURE ASSOCIATED WITH TROPICAL STORM ODILE WILL LIFT NORTHWARD
INTO THE SOUTHWEST AND AID IN PRODUCING SHOWERS AND THUNDERSTORMS
WITH HEAVY RAIN OVER PARTS OF THE SOUTHWEST AND THE SOUTHERN
ROCKIES THROUGH THURSDAY EVENING.  A MODERATE RISK OF FLASH
FLOODING IS EXPECTED DURING THIS TIME FRAME, AS SEVERAL INCHES OF
RAIN ARE EXPECTED TO FALL ACROSS SOUTHEAST ARIZONA AND SOUTHERN
NEW MEXICO.  SEE WEATHER PREDICTION CENTER RAINFALL AND EXCESSIVE
RAINFALL OUTLOOKS AND DISCUSSIONS FOR MORE CONCERNING THIS HEAVY
RAIN THREAT.

MEANWHILE, UPPER-LEVEL ENERGY OVER THE SOUTHERN ROCKIES WILL MOVE
SOUTHEASTWARD TO THE CENTRAL GULF COAST BY THURSDAY.
MOISTURE-RICH AIR OVER THE WESTERN GULF COAST WILL INTERACT WITH
THE UPPER-LEVEL ENERGY TO PRODUCE SHOWERS AND THUNDERSTORMS OVER
THE WESTERN GULF COAST AND THE SOUTHERN ROCKIES THROUGH THURSDAY.
IN ADDITION, AN OLD FRONT EXTENDING FROM THE SOUTHEAST TO PARTS OF
THE CENTRAL PLAINS WILL ALSO AID IN FOCUSING SHOWERS AND
THUNDERSTORMS OVER PARTS OF THE MIDDLE/LOWER MISSISSIPPI VALLEY
THROUGH THURSDAY.

ELSEWHERE, UPPER-LEVEL ENERGY MOVING OVER THE
MID-ATLANTIC/SOUTHEAST WILL AID IN PRODUCING SHOWERS AND
THUNDERSTORMS OVER PARTS OF THE SOUTHERN MID-ATLANTIC AND THE
SOUTHEAST ON WEDNESDAY AND THURSDAY.  FURTHERMORE, A FRONT MOVING
SOUTHEASTWARD ACROSS THE GREAT LAKES INTO THE NORTHEAST
COAST/MID-ATLANTIC BY THURSDAY WILL CAUSE RAIN WILL DEVELOP OVER
PARTS OF THE UPPER GREAT LAKES AND MOVE ACROSS ONTARIO INTO PARTS
OF NORTHERN NEW ENGLAND BY THURSDAY MORNING.

A DEEP UPPER-LEVEL TROUGH OVER THE EASTERN PACIFIC WILL MOVE
ONSHORE OVER CALIFORNIA BY THURSDAY.  THE ENERGY WILL PRODUCE RAIN
OVER PARTS OF THE WEST COAST WEDNESDAY AFTERNOON INTO THURSDAY
MORNING.  AN AREA OF SHOWERS AND THUNDERSTORMS WILL DEVELOP OVER
PARTS OF THE GREAT BASIN ON THURSDAY EVENING AS THE UPPER LEVEL
SYSTEM PROGRESSES INLAND.


ZIEGENFELDER/ROTH


GRAPHICS AVAILABLE AT WWW.WPC.NCEP.NOAA.GOV
$$





USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.