Prognostic Meteorological Discussion
Issued by NWS

Home | Current Version | Previous Version | Text Only | Print | Product List | Glossary On
Versions: 1 2 3
000
FXUS01 KWBC 230720
PMDSPD

SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
219 AM EST THU NOV 23 2017

VALID 12Z THU NOV 23 2017 - 12Z SAT NOV 25 2017

...HEAVY RAINFALL POSSIBLE ACROSS PORTIONS OF FLORIDA THURSDAY AND
FRIDAY...

...WET WEATHER AND LOCALIZED HEAVY RAINFALL POSSIBLE THURSDAY
ACROSS THE PACIFIC NORTHWEST...

...WELL ABOVE NORMAL TEMPERATURES LIKELY ACROSS THE NORTHERN AND
CENTRAL PLAINS THURSDAY AND FRIDAY...


A SURFACE LOW CURRENTLY IN THE EASTERN GULF OF MEXICO WILL MOVE
ACROSS THE NORTHERN FLORIDA PENINSULA ON THURSDAY. EXPECT SHOWERS
AND THUNDERSTORMS, WITH HEAVY RAINFALL POSSIBLE, TO ACCOMPANY THIS
SYSTEM DURING THE THANKSGIVING HOLIDAY AND INTO FRIDAY ACROSS
NORTHERN AND CENTRAL FLORIDA. THE WEATHER SHOULD DRY OUT BY THE
WEEKEND AS THE LOW MOVES FARTHER NORTH AND EAST INTO THE WESTERN
ATLANTIC AND SURFACE HIGH PRESSURE MOVES INTO THE REGION.

IT ALSO LOOKS TO BE A WET HOLIDAY FOR THOSE ACROSS THE NORTHWEST
AS A COLD FRONT CROSSING THE REGION WILL BRING RAIN AND MOUNTAIN
SNOWS TO PLACES FROM THE PACIFIC NORTHWEST INTO THE NORTHERN
ROCKIES. LOCALIZED HEAVY RAINFALL AND FLOODING WILL BE POSSIBLE
ACROSS PORTIONS OF NORTHWEST WASHINGTON ON THURSDAY BUT FARTHER
EAST, LIMITED MOISTURE AVAILABILITY WOULD MEAN ACTIVITY SHOULD BE
MORE SCATTERED AND LIGHT TO MODERATE IN INTENSITY. SOME LIGHT
ACCUMULATING SNOWS ARE ALSO POSSIBLE IN THE HIGHER TERRAIN OF THE
WASHINGTON CASCADES, BUT SIGNIFICANT ACCUMULATIONS ARE NOT
EXPECTED. CONDITIONS ACROSS THE NORTHWEST ARE EXPECTED TO DRY OUT
AFTER THE PASSAGE OF THE FRONT, BUT THE PACIFIC NORTHWEST WHICH
SHOULD SEE ANOTHER ROUND OF SHOWERS BY THE WEEKEND AS A SECOND
COLD FRONT APPROACHES THE REGION.

ACROSS THE NORTHERN AND CENTRAL PLAINS, TEMPERATURES AHEAD OF THIS
COLD FRONT WILL BE VERY WARM, WITH AFTERNOON HIGHS ON THURSDAY AND
FRIDAY AS MUCH AS 20 TO 35 DEGREES ABOVE NORMAL. THE SAME FRONT
WILL ALSO BRING SOME LIGHT RAINFALL TO PARTS OF THE GREAT LAKES ON
FRIDAY MOVING INTO THE NORTHEAST BY SATURDAY.


SANTORELLI

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





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