Special Weather Statement, NWS State College, PA

Area Forecast Discussion
National Weather Service State College PA
1042 PM EST Sun Feb 12 2017

.SYNOPSIS...

Strong northwest winds will continue into Monday on the back
side of a storm system that will move off to the east of New
England. High pressure will return with fair and mild
conditions for Tuesday with a much lighter wind. Another potent
upper level disturbance and surface cold front will move
southeast from the Upper Great Lakes and bring the cold air back
to the state for Wednesday through Friday. Abnormally warm air
looks like it returns for next weekend.

&&

.NEAR TERM /UNTIL 6 AM MONDAY MORNING/...

The line of low topped thunderstorms has moved into the lower
Susq valley where foggy conditions and calm winds are giving way
rain showers accompanied by strong gusts from the northwest and
the occasional rumble of thunder.

The main surface low is now south of New England and deepening
rapidly. Cold air will continue to pour into the region on a
strong gusty NW wind. Bufkit soundings support frequent gusts
developing in the 35-50 mph range and continuing into Monday.

As the colder air pours into the region and we develop a deep
NW flow over the Gr Lakes, lake and orographically enhanced snow
showers are already on the increase into NWRN Pa and the Laurel
Highlands.

Snow accumulations over the far NW will be enough to create
hazardous travel. There will be a favorable fetch off Lake Erie and
there will also be quite a bit of speed shear and gusty winds.
Will hold the LES warning to Warren Co for now, and an advisory
McKean Co. The fetch is not favorable for heavy snow for much
of the area, but the Laurels and their upslope help will
probably tack on another 1-3" to the coating which may occur
during the push of cold air early in the night. Potter Co and
maybe even Elk Co may need an advy for snow eventually if the
bands are more persistent than currently anticipated - but
confidence is low for that at this time. The bands will be
numerous, but also fast moving and a fairly short distance away
from the lake.

&&

.SHORT TERM /6 AM MONDAY MORNING THROUGH 6 PM MONDAY/...
The wind decreases gradually in the afternoon, but will still
be quite gusty (30-35 mph) as the low pulls northeast of Cape
Cod. The snow showers also diminish/dissipate fairly quickly as
the subsidence inversion base drops steadily. Max temps Monday
will be near normal (about 40F) in the eastern valleys with the
strong downslope flow and eventual clearing. However, highs will
stay 5-10F short of normal elsewhere.

&&

.LONG TERM /MONDAY NIGHT THROUGH SUNDAY/...
The winds will gradually slacken Monday night into Tuesday as a
ridge of high pressure slides east from the Ohio Valley.

An area of low-mid level warm advection-induced light snow may
brush the NW mtns Tuesday as another nrn stream wave approaches
from the Upper Glakes. This wave of moisture and instability
will drop through Tuesday night into Wednesday, though most
precipitation should be relegated to the mountains.

SFC low has shifted further north with cold air back into the
region mid week through the end of the week. Light precipitation
possible with another shot of cold air and gusty NW winds
through the mtns. The influx of cold air will shift as a ridge
will builds in into next weekend. Currently 850mb temps are in
the +4C range so expect warmer temperatures.

&&

.AVIATION /04Z MONDAY THROUGH FRIDAY/...
A cold front will sweep through central Pa this evening,
accompanied by a round of snow showers/squalls across the NW
Mtns and rain showers elsewhere. Low CIGs still noted at LNS at
03Z, but expect rapid improvement by around 04Z, as drier air
works in behind the front. Main story across the entire region
will be the strong, gusty WNW winds following the frontal
passage. Model soundings support frequent gusts overnight of
around 40kts with peak gusts close to 50kts possible, mainly
across southern Pa.

Behind the front, model soundings support mainly VFR conditions
east of the mountains overnight. However, residual low level
moisture ascending the Allegheny Plateau will result in
lingering snow showers with occasional IFR VIS reductions at
BFD and JST.

Gradual improvement is expected Monday, as high pressure
approaches from the Midwest. However, MVFR CIGs/flurries appear
likely at BFD/JST for much of the day. Bufkit soundings support
wind gusts to around 45kts across southeast Pa during the
morning (35kts northwest Pa), then gradually diminishing winds
toward evening.

Outlook...

Tue...No sig wx expected.

Wed-Thu...Sct shsn/VIS reduction possible BFD/JST.

Fri...No sig wx expected.

&&

.EQUIPMENT...
KFIG surface observation will be off line until further notice
due to failed power feed.

&&

.CTP WATCHES/WARNINGS/ADVISORIES...
Wind Advisory until 1 PM EST Monday for PAZ006-010>012-017>019-
024>028-033>035-037-041-042-045-046-049>053.
Wind Advisory until 5 PM EST Monday for PAZ036-056>059-063>066.
Winter Weather Advisory until 1 PM EST Monday for PAZ024-033.
Lake Effect Snow Advisory until 1 PM EST Monday for PAZ005.
Wind Advisory until 4 AM EST Monday for PAZ004-005.
Lake Effect Snow Warning until 1 PM EST Monday for PAZ004.

&&

SYNOPSIS...La Corte
NEAR TERM...La Corte
SHORT TERM...Lambert
LONG TERM...Lambert/Ceru
AVIATION...Fitzgerald
EQUIPMENT...

Hazardous Weather Outlook
National Weather Service State College PA
926 PM EST Sun Feb 12 2017

PAZ036-056-057-059-063>066-140230-
Franklin-Perry-Dauphin-Lebanon-Cumberland-Adams-York-Lancaster-
926 PM EST Sun Feb 12 2017

...WIND ADVISORY IN EFFECT UNTIL 5 PM EST MONDAY...

This Hazardous Weather Outlook is for central Pennsylvania.

.DAY ONE...Tonight.

Please listen to NOAA Weather Radio or go to
weather.gov/StateCollege on the internet for more
information about the following hazards.

   Wind Advisory.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

Please listen to NOAA Weather Radio or go to
weather.gov/StateCollege on the internet for more
information about the following hazards.

   Wind Advisory.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

PAZ019-025>028-034-035-140230-
Southern Centre-Blair-Huntingdon-Mifflin-Juniata-Bedford-Fulton-
926 PM EST Sun Feb 12 2017

...WIND ADVISORY IN EFFECT UNTIL 1 PM EST MONDAY...

This Hazardous Weather Outlook is for central Pennsylvania.

.DAY ONE...Tonight.

Please listen to NOAA Weather Radio or go to
weather.gov/StateCollege on the internet for more
information about the following hazards.

   Wind Advisory.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

Please listen to NOAA Weather Radio or go to
weather.gov/StateCollege on the internet for more
information about the following hazards.

   Wind Advisory.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

PAZ012-018-037-041-042-140230-
Northern Clinton-Northern Centre-Tioga-Northern Lycoming-Sullivan-
926 PM EST Sun Feb 12 2017

...WIND ADVISORY IN EFFECT UNTIL 1 PM EST MONDAY...

This Hazardous Weather Outlook is for central Pennsylvania.

.DAY ONE...Tonight.

Please listen to NOAA Weather Radio or go to
weather.gov/StateCollege on the internet for more
information about the following hazards.

   Wind Advisory.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

Please listen to NOAA Weather Radio or go to
weather.gov/StateCollege on the internet for more
information about the following hazards.

   Wind Advisory.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

PAZ004-140230-
Warren-
926 PM EST Sun Feb 12 2017

...LAKE EFFECT SNOW WARNING IN EFFECT UNTIL 1 PM EST MONDAY...
...WIND ADVISORY IN EFFECT UNTIL 4 AM EST MONDAY...

This Hazardous Weather Outlook is for central Pennsylvania.

.DAY ONE...Tonight.

Please listen to NOAA Weather Radio or go to
weather.gov/StateCollege on the internet for more
information about the following hazards.

   Wind Advisory.
   Lake Effect Snow Warning.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

Please listen to NOAA Weather Radio or go to
weather.gov/StateCollege on the internet for more
information about the following hazards.

   Lake Effect Snow Warning.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

PAZ024-033-140230-
Cambria-Somerset-
926 PM EST Sun Feb 12 2017

...WIND ADVISORY IN EFFECT UNTIL 1 PM EST MONDAY...
...WINTER WEATHER ADVISORY IN EFFECT UNTIL 1 PM EST MONDAY...

This Hazardous Weather Outlook is for central Pennsylvania.

.DAY ONE...Tonight.

Please listen to NOAA Weather Radio or go to
weather.gov/StateCollege on the internet for more
information about the following hazards.

   Winter Weather Advisory.
   Wind Advisory.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

Please listen to NOAA Weather Radio or go to
weather.gov/StateCollege on the internet for more
information about the following hazards.

   Winter Weather Advisory.
   Wind Advisory.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

PAZ017-140230-
Clearfield-
926 PM EST Sun Feb 12 2017

...WIND ADVISORY IN EFFECT UNTIL 1 PM EST MONDAY...

This Hazardous Weather Outlook is for central Pennsylvania.

.DAY ONE...Tonight.

Please listen to NOAA Weather Radio or go to
weather.gov/StateCollege on the internet for more
information about the following hazards.

   Wind Advisory.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

Please listen to NOAA Weather Radio or go to
weather.gov/StateCollege on the internet for more
information about the following hazards.

   Wind Advisory.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

PAZ006-010-011-140230-
Potter-Elk-Cameron-
926 PM EST Sun Feb 12 2017

...WIND ADVISORY IN EFFECT UNTIL 1 PM EST MONDAY...

This Hazardous Weather Outlook is for central Pennsylvania.

.DAY ONE...Tonight.

Please listen to NOAA Weather Radio or go to
weather.gov/StateCollege on the internet for more
information about the following hazards.

   Wind Advisory.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

Please listen to NOAA Weather Radio or go to
weather.gov/StateCollege on the internet for more
information about the following hazards.

   Wind Advisory.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

PAZ005-140230-
McKean-
926 PM EST Sun Feb 12 2017

...LAKE EFFECT SNOW ADVISORY IN EFFECT UNTIL 1 PM EST MONDAY...
...WIND ADVISORY IN EFFECT UNTIL 4 AM EST MONDAY...

This Hazardous Weather Outlook is for central Pennsylvania.

.DAY ONE...Tonight.

Please listen to NOAA Weather Radio or go to
weather.gov/StateCollege on the internet for more
information about the following hazards.

   Lake Effect Snow Advisory.
   Wind Advisory.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

Please listen to NOAA Weather Radio or go to
weather.gov/StateCollege on the internet for more
information about the following hazards.

   Lake Effect Snow Advisory.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

PAZ045-046-049>053-140230-
Southern Clinton-Southern Lycoming-Union-Snyder-Montour-
Northumberland-Columbia-
926 PM EST Sun Feb 12 2017

...WIND ADVISORY IN EFFECT UNTIL 1 PM EST MONDAY...

This Hazardous Weather Outlook is for central Pennsylvania.

.DAY ONE...Tonight.

Please listen to NOAA Weather Radio or go to
weather.gov/StateCollege on the internet for more
information about the following hazards.

   Wind Advisory.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

Please listen to NOAA Weather Radio or go to
weather.gov/StateCollege on the internet for more
information about the following hazards.

   Wind Advisory.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

PAZ058-140230-
Schuylkill-
926 PM EST Sun Feb 12 2017

...WIND ADVISORY IN EFFECT UNTIL 5 PM EST MONDAY...

This Hazardous Weather Outlook is for central Pennsylvania.

.DAY ONE...Tonight.

Please listen to NOAA Weather Radio or go to
weather.gov/StateCollege on the internet for more
information about the following hazards.

   Wind Advisory.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

Please listen to NOAA Weather Radio or go to
weather.gov/StateCollege on the internet for more
information about the following hazards.

   Wind Advisory.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

Special Weather Statement
National Weather Service State College PA
1035 PM EST SUN FEB 12 2017

PAZ024-130400-
Cambria PA-
1035 PM EST SUN FEB 12 2017

...A SNOW SQUALL WILL AFFECT PARTS OF CAMBRIA COUNTY...

HAZARDS...A snow squall which can rapidly reduce visibility to less
than a quarter of a mile.

LOCATION AND MOVEMENT...At 1032 PM EST, a snow squall was moving
into northern Cambria county. This squall will remain over mainly
rural areas of northern Cambria County through 11 pm.

SAFETY INFO...
Use extra caution if you must travel into or through this squall.
Rapid changes in visibility and potentially slick roads are likely to
lead to accidents. Consider delaying travel until this squall passes
your location.

A rapid drop in temperature will lead to the rapid formation of black
ice on area roadways. Black ice is nearly impossible to see and
roadways may appear wet. Please use extreme caution, especially on
bridges, overpasses and around curves. Allow plenty of stopping
distance and avoid braking suddenly.

&&

LAT...LON 4072 7880 4073 7851 4070 7837 4065 7841
      4064 7844 4062 7845 4060 7844 4054 7848
      4052 7853 4047 7854 4053 7890
TIME...MOT...LOC 0332Z 317DEG 30KT 4086 7942 4059 7802

KF

Special Weather Statement
National Weather Service State College PA
1058 PM EST SUN FEB 12 2017

PAZ025-026-130430-
Blair PA-Huntingdon PA-
1058 PM EST SUN FEB 12 2017

...A SNOW SQUALL WILL AFFECT PARTS OF BLAIR AND HUNTINGDON
COUNTIES...

HAZARDS...A snow squall which can rapidly reduce visibility to less
than a quarter of a mile.

LOCATION AND MOVEMENT...At 1058 PM EST, a snow squall was along a
line extending from near Northern Cambria to Canoe Creek State Park
and moving southeast at 65 MPH.

THIS SQUALL WILL BE NEAR...
  Williamsburg and Canoe Creek State Park around 1105 PM EST.
  Trough Creek State Park and Raystown Dam around 1110 PM EST.
  Horseshoe Curve around 1115 PM EST.
  Duncansville, Hollidaysburg and Lakemont around 1120 PM EST.
  Royer, Rockhill Furnace and Roaring Spring around 1125 PM EST.
  Entriken and Shy Beaver around 1130 PM EST.

This includes Interstate 99 from mile markers 20 to 38.

SAFETY INFO...
Use extra caution if you must travel into or through this squall.
Rapid changes in visibility and potentially slick roads are likely to
lead to accidents. Consider delaying travel until this squall passes
your location.

A rapid drop in temperature will lead to the rapid formation of black
ice on area roadways. Black ice is nearly impossible to see and
roadways may appear wet. Please use extreme caution, especially on
bridges, overpasses and around curves. Allow plenty of stopping
distance and avoid braking suddenly.

&&

LAT...LON 4028 7825 4030 7826 4029 7826 4035 7857
      4036 7858 4037 7856 4051 7854 4053 7852
      4054 7848 4058 7846 4052 7813 4026 7771
      4024 7774 4018 7779
TIME...MOT...LOC 0358Z 299DEG 56KT 4059 7881 4047 7830

KF

Special Weather Statement
National Weather Service State College PA
1109 PM EST SUN FEB 12 2017

PAZ024-130445-
Cambria PA-
1109 PM EST SUN FEB 12 2017

...A SNOW SQUALL WILL AFFECT PARTS OF CAMBRIA COUNTY...

HAZARDS...A snow squall which can rapidly reduce visibility to less
than a quarter of a mile.

LOCATION AND MOVEMENT...At 1109 PM EST, a snow squall was along a
line extending from near Indiana to near Lakemont and moving
southeast at 45 MPH.

THIS SQUALL WILL BE NEAR...
  Belsano around 1130 PM EST.
  Vinco and Nanty-Glo around 1135 PM EST.
  East Conemaugh and Ebensburg around 1140 PM EST.
  Ehrenfeld, South Fork and Portage around 1145 PM EST.

SAFETY INFO...
Use extra caution if you must travel into or through this squall.
Rapid changes in visibility and potentially slick roads are likely to
lead to accidents. Consider delaying travel until this squall passes
your location.

A rapid drop in temperature will lead to the rapid formation of black
ice on area roadways. Black ice is nearly impossible to see and
roadways may appear wet. Please use extreme caution, especially on
bridges, overpasses and around curves. Allow plenty of stopping
distance and avoid braking suddenly.

&&

LAT...LON 4062 7885 4057 7847 4054 7849 4052 7853
      4044 7856 4037 7856 4035 7860 4031 7863
      4036 7899
TIME...MOT...LOC 0409Z 301DEG 39KT 4060 7919 4046 7835

KF

Special Weather Statement
National Weather Service State College PA
1130 PM EST SUN FEB 12 2017

PAZ025-026-034-130530-
Bedford PA-Blair PA-Huntingdon PA-
1130 PM EST SUN FEB 12 2017

...A SNOW SQUALL WILL AFFECT PARTS OF BEDFORD...BLAIR...AND
HUNTINGDON COUNTIES...

HAZARDS...A snow squall which can rapidly reduce visibility to less
than a quarter of a mile.

LOCATION AND MOVEMENT...At 1129 PM EST, a snow squall was along a
line extending from Vinco to near Rockhill Furnace and moving
southeast at 60 MPH.

THIS SQUALL WILL BE NEAR...
  Rockhill Furnace around 1135 PM EST.
  Blue Knob State Park and Ski Gap around 1145 PM EST.
  Queen, Claysburg and Roaring Spring around 1150 PM EST.
  Martinsburg around 1155 PM EST.
  Coaldale and Dudley around 1205 AM EST.
  Waterfall around 1215 AM EST.

This includes the following Interstates...
 The Pennsylvania Turnpike from mile markers 185 to 186.
 Interstate 99 from mile markers 11 to 28.

SAFETY INFO...
Use extra caution if you must travel into or through this squall.
Rapid changes in visibility and potentially slick roads are likely to
lead to accidents. Consider delaying travel until this squall passes
your location.

A rapid drop in temperature will lead to the rapid formation of black
ice on some roadways. Black ice is nearly impossible to see and
roadways may appear wet. Please use extreme caution, especially on
bridges, overpasses and around curves. Allow plenty of stopping
distance and avoid braking suddenly.

&&

LAT...LON 4010 7793 4013 7808 4016 7813 4012 7816
      4024 7866 4035 7860 4037 7856 4044 7856
      4047 7854 4035 7780 4031 7772 4027 7770
      4020 7777 4006 7786
TIME...MOT...LOC 0429Z 299DEG 53KT 4041 7885 4030 7791

KF

Special Weather Statement
National Weather Service State College PA
1138 PM EST SUN FEB 12 2017

PAZ017-018-130500-
Northern Centre PA-Clearfield PA-
1138 PM EST SUN FEB 12 2017

...A NUMBER OF SNOW SQUALLS WILL AFFECT PARTS OF NORTHERN CENTRE AND
CLEARFIELD COUNTIES...

HAZARDS...A number of separate snow squalls accompanied by wind
gusts greater than 40 MPH are moving across I-80. These squalls can
each rapidly reduce visibility to less than a quarter of a mile.

LOCATION AND MOVEMENT...At 1135 PM EST, multiple snow squalls were
lined up north to south between DuBois and Snow Shoe and moving
southeast at 50 MPH.

LOCATIONS IMPACTED INCLUDE...
Clearfield, Curwensville, Jeffries, North Philipsburg, Osceola Mills,
Clarence, Woodland, Hyde, South Philipsburg, Lecontes Mills, Pine
Glen, Snow Shoe, Houtzdale, Chester Hill, Black Moshannon State Park,
Plymptonville, Moshannon, Philipsburg, Sandy Ridge and West Decatur.

For those driving on Interstate 80, this includes areas between the
Penfield and Milesburg exits, specifically from mile markers 114 to
153.

SAFETY INFO...

A rapid drop in temperature will lead to the rapid formation of
black ice on area roadways. Black ice is nearly impossible to see
and roadways may appear wet. Please use extreme caution, especially
on bridges, overpasses and around curves. Allow plenty of stopping
distance and avoid braking suddenly.

Conditions can deteriorate rapidly in winter weather situations. Be
prepared for snow or ice covered roads. Slow down and allow extra
time to reach your destination.

&&

LAT...LON 4092 7880 4107 7853 4111 7805 4109 7764
      4091 7797 4073 7835 4082 7881 4090 7881
TIME...MOT...LOC 0435Z 290DEG 45KT 4108 7806 4105 7845 4087 7878

Dangelo

Special Weather Statement
National Weather Service State College PA
1216 AM EST MON FEB 13 2017

PAZ034>036-063-130545-
Bedford PA-Fulton PA-Franklin PA-Cumberland PA-
1216 AM EST MON FEB 13 2017

...A SNOW SQUALL WILL AFFECT PARTS OF BEDFORD...FULTON...FRANKLIN...
AND CUMBERLAND COUNTIES...

HAZARDS...A snow squall accompanied by wind gusts greater than 40
MPH which can rapidly reduce visibility to less than a quarter of a
mile.

LOCATION AND MOVEMENT...At 1215 AM EST, a snow squall was along a
line extending from near Upper Strasburg to near McConnellsburg to
Bedford and moving south at 35 MPH.

This includes the following Interstates... Interstate 70 from mile
markers 147 to 170.
 The Pennsylvania Turnpike between mile markers 136 and 171...between
mile markers 174 and 175...and from mile markers 177 to 178.
 Interstate 81 from mile markers 0 to 29.
 Interstate 99 from mile markers 0 to 3.

SAFETY INFO...
Use extra caution if you must travel into or through this squall.
Rapid changes in visibility and potentially slick roads are likely to
lead to accidents. Consider delaying travel until this squall passes
your location.

Conditions can deteriorate rapidly in winter weather situations. Be
prepared for snow or ice covered roads. Slow down and allow extra
time to reach your destination.

&&

LAT...LON 3972 7873 4011 7864 4004 7798 4013 7761
      4010 7747 3972 7746
TIME...MOT...LOC 0515Z 331DEG 25KT 4005 7766 3999 7795 4004 7850

Dangelo