Prognostic Meteorological Discussion
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FXUS01 KWBC 250712
PMDSPD

SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
311 AM EDT SUN JUN 25 2017

VALID 12Z SUN JUN 25 2017 - 12Z TUE JUN 27 2017

...SEVERE THUNDERSTORMS AND HEAVY RAIN POSSIBLE TODAY ACROSS
PORTIONS OF THE SOUTHWEST AND THE SOUTHERN HIGH PLAINS...

...DANGEROUSLY HOT TEMPERATURES EXPECTED AGAIN TODAY FOR MUCH OF
THE PACIFIC NORTHWEST AND PORTIONS OF THE SOUTHWEST...

A STATIONARY FRONTAL BOUNDARY IS FORECAST TO LINGER FROM SOUTHERN
TEXAS TO PORTIONS OF THE SOUTHWEST THROUGH THE NEXT COUPLE DAYS AS
IT GRADUALLY WEAKENS. THE FRONT WILL PROVIDE A FOCUS FOR SCATTERED
SHOWERS AND THUNDERSTORMS, ESPECIALLY DURING THE AFTERNOON AND
EVENING. SEVERE THUNDERSTORMS AS WELL AS HEAVY RAINFALL WILL BE
POSSIBLE WITH THESE STORMS FROM THE SOUTHERN ROCKIES OF NEW MEXICO
AND PORTIONS OF THE ADJACENT HIGH PLAINS. FARTHER EAST, THE SAME
FRONTAL BOUNDARY WILL ALSO PRODUCE SCATTERED TO NUMEROUS SHOWERS
AND THUNDERSTORMS ALONG THE GULF COAST AND ACROSS EASTERN PORTIONS
OF THE CAROLINAS TODAY; LOCALLY HEAVY RAINFALL IS POSSIBLE.
FARTHER NORTH, SCATTERED SHOWERS AND STORMS WILL BE POSSIBLE TODAY
FROM THE UPPER GREAT LAKES TO NEW ENGLAND AS AN UPPER-LEVEL
DISTURBANCE PASSES OVERHEAD. TEMPERATURES ARE FORECAST TO
GENERALLY BE BELOW AVERAGE TODAY AND MONDAY, ESPECIALLY ACROSS THE
GREAT LAKES WHERE HIGHS MAY REMAIN IN THE 60S FOR MANY LOCATIONS.

HIGH PRESSURE AT THE MID AND UPPER-LEVELS WILL PERSIST FOR ANOTHER
DAY ALONG THE WEST COAST, RESULTING IN ANOTHER DAY OF EXTREME HEAT
FOR THE PACFIC NORTHWEST AS WELL AS PORTIONS OF THE SOUTHWEST.
HIGHS TODAY ARE FORECAST TO BE 15 TO 25 DEGREES ABOVE AVERAGE
ACROSS MUCH OF THE NORTHWEST, WITH MANY LOCATIONS REACHING WELL
INTO THE 90S TO EVEN NEAR 100 DEGREES. ACROSS THE SOUTHWEST, THE
HEAT WILL NOT BE AS EXTREME AS IN RECENT DAYS, BUT HIGH
TEMPERATURES ARE NONETHELESS FORECAST TO BE 5 TO 15 DEGREES ABOVE
AVERAGE, WITH MANY AREAS REACHING WELL INTO THE 100S OR 110S. ON
MONDAY, THE UPPER RIDGE WILL MOVE A BIT EAST, RESULTING IN RISING
TEMPERATURES FOR THE NORTHERN ROCKIES, WHILE THE NORTHWEST BEGINS
A GRADUAL COOLING TREND THAT WILL CONTINUE THROUGH THE EARLY
WORKWEEK.

RYAN


GRAPHICS AVAILABLE AT
WWW.WPC.NCEP.NOAA.GOV/BASICWX/BASICWX_NDFD.PHP

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