Wind Chill Watch 1, NWS Pittsburgh, PA

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PITTSBURGH PA
118 AM EST FRI FEB 12 2016

.SYNOPSIS...
HIGH PRESSURE WILL BUILD IN OVERNIGHT...BUT A COLD FRONT WILL
BRING MORE SNOW CHANCES FRIDAY AND SATURDAY...WITH MUCH COLDER
TEMPERATURES FOR THE WEEKEND.

&&

.NEAR TERM /UNTIL 6 AM THIS MORNING/...
SKIES HAVE CLEARED BASICALLY WALL-TO-WALL AND TEMPERATURES HAVE
GONE INTO FREE FALL IN MOST AREAS. HIGH CLOUDS IN THE MID-
MISSISSIPPI VALLEY ARE POISED TO GENERALLY REMAIN TO THE SOUTH OF
THE AREA AS THEY TRANSIT TO THE SOUTHEASTERN PORTIONS OF THE
COUNTRY. THAT PLACES OUR AREA IN A WAITING PATTERN FOR THE MID-
CLOUD DECK AHEAD OF THE SYSTEM THAT WILL START TO AFFECT US ON
FRIDAY. AS A RESULT...CLEARING WILL REMAIN FOR MUCH OF THE
NIGHT...MEANING VERY COLD TEMPERATURES. SOME AREAS ARE ALREADY
BELOW ZERO...AND EVERYONE LOOKS TO AT THE VERY LEAST DROP INTO THE
SINGLE DIGITS BY THE TIME ANY CLOUDS MAKE IT INTO THE AREA. FRIES

&&

.SHORT TERM /6 AM THIS MORNING THROUGH SUNDAY/...
THE NEXT SHORTWAVE IS PROGGED TO CROSS THE LWR OH VLY/MID ATLANTIC
RGN FRI BRINGING INCRG LGT SNOW CHCS. ANOTHER SHORTWAVE...AND
ASSOCIATED COLD FRONT...IS EXPD TO CROSS THE RGN FRI EVE WITH
BETTER CHCS FOR SNOW SHOWERS. THE SNOW SHOWERS SHOULD CONTINUE
UNDER UPR TROFG AND LAKE/TERRAIN ENHANCEMENT LATER FRI NGT AND
SAT...THOUGH ACCUMULATIONS ARE EXPD TO REMAIN BELOW ADVISORY
CRITERIA AS DRY ARCTIC AIR RESULTS IN UNFAVORABLE MOISTURE CONTENT
IN THE SNOW GROWTH RGN. BLDG HIGH PRESSURE SAT NGT/SUN SHOULD
BRING DRY WEATHER.

WIND WITH SUFFICIENT PRES GRADIENT AND COLD TEMPS FRIDAY NIGHT
THRU SOMETIME SAT WILL LIKELY RESULT IN ADVISORY LVL WIND CHILLS
ACRS MUCH OF THE AREA. DIMINISHING WINDS MAY PROVIDE FOR LESSER
CHCS OF WIND CHILL ADVISORIES SAT NGT/ERLY SUN...THOUGH TEMPS NR
OR BELOW ZERO ARE EXPD. TEMPS WERE MODIFIED SLIGHTLY FROM
SUPERBLENDED GUIDANCE.

&&

.LONG TERM /SUNDAY NIGHT THROUGH THURSDAY/...
FAST MOVING SHORTWAVE WILL BRING A CHANCE FOR SNOW LATER SUNDAY
NIGHT INTO MONDAY AS TEMPERATURES MOVE TOWARD SEASONAL AVERAGES
TO START THE WEEK. MODELS HAVE DIFFERING SOLUTIONS FOR SOUTHERN
STREAM STORM SYSTEM INTENSIFYING AND MOVING NORTHEAST LATER
MONDAY INTO TUESDAY. SPLIT THE DIFFERENCE BETWEEN WPC PROGS AND
THE SUPERBLEND...WITH HIGHEST POPS INTO THE SOUTHEAST RIDGES.
THIS WILL BE FOLLOWED BY A CLIPPER TYPE SYSTEM WEDNESDAY WITH
CHANCE POPS. TEMPERATURES WILL BE NEAR THE SEASONAL NORM. HIGH
PRESSURE LOOKS TO GIVE A DRY DAY THURSDAY.

&&

.AVIATION /06Z FRIDAY THROUGH TUESDAY/...
VFR CONDITIONS EXPECTED OVERNIGHT AND INTO FRIDAY MORNING BEFORE
THE NEXT SYSTEM BRINGS ANOTHER ROUND OF SNOW AND FLIGHT
RESTRICTIONS FRIDAY AFTERNOON/EVENING. GUSTY NORTHWEST WINDS WILL
COMMENCE BY FRIDAY EVENING AS A COLD FRONT MOVES THROUGH THE AREA
WITH A BURST OF SNOW SHOWERS ALONG IT.

.OUTLOOK.../FRIDAY NIGHT THROUGH TUESDAY/...
RESTRICTIONS WILL BE POSSIBLE IN SNOW SHOWERS LATER FRIDAY INTO
SATURDAY. THE NEXT CHANCE FOR WIDESPREAD IFR WILL BE WITH LOW
PRESSURE MONDAY AND TUESDAY.

&&

.PBZ WATCHES/WARNINGS/ADVISORIES...
MD...NONE.
OH...NONE.
PA...NONE.
WV...NONE.

&&

HAZARDOUS WEATHER OUTLOOK...UPDATED
NATIONAL WEATHER SERVICE PITTSBURGH PA
245 PM EST THU FEB 11 2016

MDZ001-OHZ039>041-048>050-057>059-068-069-PAZ007>009-013>016-020>023-
029-031-073>076-WVZ001>004-012-021-509>514-121945-
GARRETT-TUSCARAWAS-CARROLL-COLUMBIANA-COSHOCTON-HARRISON-
JEFFERSON OH-MUSKINGUM-GUERNSEY-BELMONT-NOBLE-MONROE-MERCER-VENANGO-
FOREST-LAWRENCE-BUTLER-CLARION-JEFFERSON PA-BEAVER-ALLEGHENY-
ARMSTRONG-INDIANA-WASHINGTON-GREENE-WESTMORELAND-WESTMORELAND RIDGES-
FAYETTE-FAYETTE RIDGES-HANCOCK-BROOKE-OHIO-MARSHALL-WETZEL-MARION-
MONONGALIA-RIDGES OF EASTERN MONONGALIA AND NORTHWESTERN PRESTON-
PRESTON-EASTERN PRESTON-WESTERN TUCKER-EASTERN TUCKER-
245 PM EST THU FEB 11 2016

THIS HAZARDOUS WEATHER OUTLOOK IS FOR WESTERN MARYLAND...EAST
CENTRAL OHIO...NORTHWEST PENNSYLVANIA...SOUTHWEST
PENNSYLVANIA...WEST CENTRAL PENNSYLVANIA...NORTHERN WEST
VIRGINIA...NORTHERN PANHANDLE OF WEST VIRGINIA AND NORTHERN WEST
VIRGINIA.

.DAY ONE...THIS AFTERNOON AND TONIGHT.

HAZARDOUS WEATHER IS NOT EXPECTED AT THIS TIME.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY.

WIND CHILLS OF 10 TO 20 BELOW ZERO ARE LIKELY FRIDAY NIGHT INTO
SATURDAY. A WIND CHILL ADVISORY MAY BE NEEDED. LOW WIND CHILLS ARE
POSSIBLE AGAIN SATURDAY NIGHT.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.

07