Prognostic Meteorological Discussion
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FXUS01 KWBC 031931
PMDSPD

SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
331 PM EDT FRI JUL 03 2015

VALID 00Z SAT JUL 04 2015 - 00Z MON JUL 06 2015

...SLOW MOVING FRONTAL SYSTEM WILL BRING SHOWERS/THUNDERSTORMS TO
APPALACHIANS/MIDDLE ATLANTIC STATES...

...SCATTERED THUNDERSHOWERS ACROSS THE INTERIOR WEST WITH POSSIBLE
HEAVY STORMS IN THE ROCKIES AS HEAT SLOWLY EASES...

...SIGNIFICANT COOLING ACROSS THE NORTHERN ROCKIES/PLAINS LATER
WITH RAIN IN THE COOL AIR OVER THE WEEKEND...WITH POTENTIAL FOR
SEVERE THUNDERSTORMS AHEAD OF THE COLD FRONT OVER THE MISSISSIPPI
VALLEY ESPECIALLY ON MONDAY...

A WEAK AREA OF LOW PRESSURE WILL MAKE ITS WAY EASTWARD ALONG A
NEARLY STATIONARY FRONT THAT SHOULD BEGIN TO DROP SLOWLY SOUTHWARD
AS A COLD FRONT WITH SHOWERS AND THUNDERSTORMS COMMON ACROSS THE
NORTHERN TIER OF THE SOUTHEAST ACROSS THE APPALACHIANS ACROSS THE
REST OF THE SOUTHEAST INTO THE MID ATLANTIC STATES BEFORE HIGH
PRESSURE BUILDS ACROSS THE NORTHERN MID ATLANTIC STATES ON SUNDAY
AS THE WAVE OF LOW PRESSURE MOVES OFFSHORE.  HEAVIEST RAINS OF 1
TO 2 INCHES ARE EXPECTED FROM SOUTHERN ARKANSAS ACROSS THE
SOUTHERN BORDER OF TENNESSEE ACROSS THE SPINE OF THE APPALACHIANS
INTO THE MID ATLANTIC STATES WITH HEAVIEST AMOUNTS LIKELY ACROSS
THE UPPER SOUTH.  A FEW SEVERE THUNDERSTORMS ARE ALSO POSSIBLE.

WHILE HEAT ADVISORIES WILL CONTINUE ACROSS THE HOLIDAY WEEKEND
ACROSS THE NORTHWEST, A SHARP COLD FRONT IS EXPECTED TO DROP SOUTH
SOUTHEASTWARD ACROSS THE NORTHERN ROCKIES ON SATURDAY NIGHT INTO
SUNDAY WITH A COLD RAIN DEVELOPING ACROSS MONTANA AND PARTS OF
NORTH DAKOTA ON SUNDAY INTO SUNDAY NIGHT.  MUCH COOLER
TEMPERATURES WILL SURGE SOUTHWARD ESPECIALLY ACROSS MONTANA AND
WESTERN NORTH DAKOTA ON SUNDAY NIGHT INTO MONDAY WITH COOLER AIR
DROPPING SOUTHWARD AS FAR AS COLORADO BY MONDAY.  THUNDERSTORMS
WILL DEVELOP AHEAD OF THE STRONG COLD FRONT BUT THE BEST CHANCE
FOR SEVERE WEATHER IS LIKELY BE ON MONDAY AHEAD OF THE FRONT
ACROSS THE MISSISSIPPI VALLEY

FOR THE WESTERN U.S., DIURNALLY DRIVEN SHOWERS AND STORMS WILL
CONTINUE TO BE PRESENT EACH AFTERNOON AND EVENING ACROSS THE
FOUR-CORNERS REGION AND EXTENDING SOUTHWARD INTO MEXICO IN
RESPONSE TO MONSOONAL MOISTURE IN PLACE.  ISOLATED THUNDERSTORMS
ARE ALSO POSSIBLE ACROSS THE HIGHER ELEVATIONS OF NORTHERN
CALIFORNIA, OREGON, AND WASHINGTON.

KOCIN


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