333
FXUS61 KPBZ 210000 AAA
AFDPBZ
AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE PITTSBURGH PA
700 PM EST THU FEB 20 2020
SYNOPSIS
HIGH PRESSURE WILL MAINTAIN DRY CONDITIONS, WITH MODERATING
TEMPERATURE THROUGH THE WEEKEND.
NEAR TERM /THROUGH FRIDAY/
ONLY MINOR CHANGES FOR THE EVENING UPDATE. AREA OF SCATTERED SNOW
SHOWERS/FLURRIES, SOUTH AND EAST OF PIT, CONTINUES TO DRIFT
SOUTHEASTWARD WITH AN EXITING SHORTWAVE. FURTHER NORTH, LINGERING
LAKE ENHANCED SNOW FLURRIES CONTINUE TO FALL NEAR THE I-80 CORRIDOR.
WILL HOLD ON TO THE FLURRIES FOR A SMALL PERIOD THIS EVENING, BEFORE
BRINGING EVERYTHING TO AN END. CLOUDS WERE MODIFIED BASED ON LATEST
SATELLITE IMAGES AND MODEL DATA.
PREVIOUS DISCUSSION...
OVERNIGHT LOWS WILL AVERAGE 10 DEGREES BELOW NORMAL ACROSS THE
REGION WITH DECREASING CLOUD COVERAGE AND LESSENING WINDS.
SHORT TERM /FRIDAY NIGHT THROUGH SUNDAY/
BROAD HIGH PRESSURE WILL MAINTAIN DRY WEATHER THROUGH SUNDAY WITH
GRADUAL TEMPERATURE MODERATION. NO REAL CHANGE WAS MADE TO THE
WEEKEND FORECAST.
LONG TERM /SUNDAY NIGHT THROUGH THURSDAY/
PRECIPITATION CHANCE IS FORECAST TO INCREASE AGAIN BY MONDAY AS
SOUTHERN STREAM LOW PRESSURE EMERGES FROM THE PLAINS AND DIGS UP THE
OHIO VALLEY AS IT WEAKENS. WITH COLDER AIR LOCKED NORTHWARD VIA THE
NORTHERN STREAM OF THE JET, AND WITH WARM ADVECTION ON THE VAN OF THE
LOW, PRECIPITATION WITH THAT EVENT SHOULD PRIMARILY BE RAIN.
MODELS AGREE THAT AN AMPLIFYING, AND ENCROACHING UPPER TROUGH IS
LIKELY TO CONTINUE PRECIPITATION CHANCES INTO MIDWEEK AND THEN BRING
COLDER WEATHER TO THE REGION.
AVIATION /23Z THURSDAY THROUGH TUESDAY/
VFR IS EXPECTED THROUGH THE PERIOD WITH HIGH PRESSURE.
OUTLOOK
RESTRICTIONS WILL BE POSSIBLE LATE SUNDAY WITH THE APPROACH OF LOW
PRESSURE.
PBZ WATCHES/WARNINGS/ADVISORIES
MD...NONE.
OH...NONE.
PA...NONE.
WV...NONE.
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page