Prognostic Meteorological Discussion
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000
FXUS01 KWBC 182000
PMDSPD

SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
259 PM EST SAT FEB 18 2017

VALID 00Z SUN FEB 19 2017 - 00Z TUE FEB 21 2017

...HEAVY SNOW POSSIBLE FOR THE CASCADES AND SIERRAS...

...HEAVY SNOW POSSIBLE FOR THE MOGOLLON RIM...

...HEAVY RAIN OVER EASTERN TEXAS...

...HEAVY RAIN A LONG THE WEST COAST...

AN UPPER-LEVEL LOW OVER THE TENNESSEE VALLEY WILL MOVE EASTWARD
OFF THE SOUTHEAST COAST AND DEVELOP A FRONT OVER PARTS OF THE
WESTERN ATLANTIC BY SUNDAY EVENING.



INTENSE RAINFALL RATES AND STRONG WIND GUSTS HAVE SIGNIFICANTLY
AFFECTED PORTIONS OF CALIFORNIA SINCE FRIDAY. VARIOUS IMPACTS
OBSERVED SO FAR WITH THIS PACIFIC STORM SYSTEM HAVE INCLUDED RAPID
RUNOFF LEADING TO RISING CREEKS/STREAMS, CARS SWEPT AWAY IN
RUSHING FLOOD WATERS, DOWNED TREES, MUDSLIDES/DEBRIS FLOWS AND
SINKHOLES. MUCH OF THE STATE HAS FLOOD WATCHES AND FLOOD WARNINGS
IN EFFECT, ESPECIALLY FOR SOUTHERN CALIFORNIA, AND WILL PERSIST
THIS WEEKEND. NEARLY CONTINUOUS ONSHORE FLOW IS FORECAST THROUGH
THE WEEKEND-- KEEPING CALIFORNIA AND PORTIONS OF THE PACIFIC
NORTHWEST IN A VERY ACTIVE, ANOMALOUSLY WET PATTERN. MOUNTAIN SNOW
IS FORECAST FOR SIERRA NEVADA RANGE AND FOR ELEVATIONS ABOVE
5500FT IN CENTRAL NEVADA-- WINTER STORM WARNINGS AND WINTER
WEATHER ADVISORIES ARE IN EFFECT FOR THESE AREAS.


ZIEGENFELDER


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