486 
FXUS01 KWBC 250850
PMDSPD
 
SHORT RANGE FORECAST DISCUSSION
NWS HYDROMETEOROLOGICAL PREDICTION CENTER CAMP SPRINGS MD
450 AM EDT FRI JUL 25 2008
 
VALID 12Z FRI JUL 25 2008 - 00Z SUN JUL 27 2008
 
AS THE UPPER LEVEL PATTERN CONTINUES TO AMPLIFY...A VORTEX OF COLD
AIR OVER EASTERN CANADA WILL ESTABLISH...BRINGING UNSEASONABLY
COOL AND UNSETTLED CONDITIONS TO THIS REGION. ALL THE WHILE...A
WARM MOISTURE LADEN AIRMASS WILL CONTINUE TO PUSH NORTHWARD INTO
THE GREAT PLAINS. OVERRUNNING OF THE FRONTAL BOUNDARY WHICH WILL
RESULT IN A WELL DEFINED ARE OF PRECIPITATION ACROSS PORTIONS OF
THE MIDWEST...INCLUDING IOWA AND MISSOURI.  HEADING
SOUTHWEST...THE REMNANTS OF DOLLY WILL AMBLE NORTHWESTWARD ALONG
THE U.S./MEXICAN BORDER...BRINGING CONVECTION INTO WEST TEXAS AND
NEW MEXICO...AS WELL AS NORTHERN OLD MEXICO. THE UPPER LEVEL RIDGE
WILL CONTINUE TO HOLD STEADY OVER THE FOUR CORNERS
REGION...RESULTING IN TOASTY TEMPERATURES. WITH THE EXTRA MOISTURE
FROM DOLLY...ANTICIPATE A SURGE IN DIURNALLY DRIVEN CONVECTION
OVER THE NEXT TWO DAYS. PACIFIC NORTHWEST...ANOTHER ALEUTIAN LOW
WILL CARVE ITS WAY INTO BRITISH COLUMBIA. WHILE SIGNIFICANT
PRECIPITATION IS NOT EXPECTED SOUTH OF THE U.S./CANADIAN BORDER
WITH THIS SYSTEM...ONSHORE FLOW AND A COLD POOL  ALOFT WILL KEEP
THE EASTERN PORTIONS OF WASHINGTON AND OREGON CONSIDERABLY COOLER.

SZATANEK


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