Alert archive / Pennsylvania / Winter Storm Warnings in 2017

Winter Storm Warning 3, NWS State College, PA

March 12, 201733 counties in Pennsylvania

NWS State College, PA issued this winter storm warning at Mar 12, 2017, 3:24 PM EDT for 33 counties in Pennsylvania. It took effect at Mar 13, 2017, 8:00 PM EDT. It was in force for 19 hr. 60 reports came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued
Mar 12, 2017, 3:24 PM EDT (19:24 UTC)
In effect from
Mar 13, 2017, 8:00 PM EDT
Expired
Mar 14, 2017, 2:56 PM EDT
In force
19 hr
Issued by
NWS State College, PA
All 33 counties

Adams County, PA, Bedford County, PA, Blair County, PA, Cambria County, PA, Cameron County, PA, Centre County, PA, Clearfield County, PA, Clinton County, PA, Columbia County, PA, Cumberland County, PA, Dauphin County, PA, Elk County, PA, Franklin County, PA, Fulton County, PA, Huntingdon County, PA, Juniata County, PA, Lancaster County, PA, Lebanon County, PA, Lycoming County, PA, McKean County, PA, Mifflin County, PA, Montour County, PA, Northumberland County, PA, Perry County, PA, Potter County, PA, Schuylkill County, PA, Snyder County, PA, Somerset County, PA, Sullivan County, PA, Tioga County, PA, Union County, PA, Warren County, PA, York County, PA

The radar

The State College radar (KCCX), 43 km from the middle of the area, began a volume at 19:26 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

What was reported inside it

TimeReportWhereRemark
Mar 14, 12:00 AM EDTSNOW 1Auburn, PA
Mar 14, 12:00 AM EDTSNOW 2.2Grantville, PA
Mar 14, 12:02 AM EDTSNOW 1.22 Nw Harrisburg, PA
Mar 14, 12:06 AM EDTSNOW 1Abbottstown, PA
Mar 14, 12:07 AM EDTSNOW 1.5Lancaster, PA
Mar 14, 12:09 AM EDTSNOW 2Colonial Park, PA
Mar 14, 12:11 AM EDTSNOW 1.5Waynesboro, PA
Mar 14, 12:20 AM EDTSNOW 1Harrisburg Internationa, PAONE INCH IN THE LAST HOUR
Mar 14, 12:28 AM EDTSNOW 1.3Mount Joy, PA
Mar 14, 12:36 AM EDTSNOW 21 N Enola, PA
Mar 14, 12:37 AM EDTSNOW 1.6Stewartstown, PA
Mar 14, 12:40 AM EDTSNOW 2Middletown, PA
Mar 14, 12:45 AM EDTSNOW 2Lemoyne, PA
Mar 14, 12:58 AM EDTSNOW 2Mastersonville, PA
Mar 14, 1:00 AM EDTSNOW 1Mifflinburg, PA
Mar 14, 1:00 AM EDTSNOW 2.5Middlesex, PA
Mar 14, 1:05 AM EDTSNOW 3.5Littlestown, PA
Mar 14, 1:14 AM EDTSNOW 3.5Colonial Park, PA
Mar 14, 1:28 AM EDTSNOW 2Millersville, PA
Mar 14, 1:44 AM EDTSNOW 3.5Summerdale, PA
Mar 14, 1:45 AM EDTSNOW 2.6Upper Strasburg, PA
Mar 14, 1:49 AM EDTSNOW 2Montgomery, PA
Mar 14, 1:54 AM EDTSNOW 6.5Colonial Park, PA
Mar 14, 2:00 AM EDTSNOW 23 Ne Benton, PA
Mar 14, 2:00 AM EDTSNOW 2Shrewsbury, PA
Mar 14, 2:00 AM EDTSNOW 2.5East York, PA
Mar 14, 2:00 AM EDTSNOW 3Ashland, PA
Mar 14, 2:00 AM EDTSNOW 4Fredericksburg, PA
Mar 14, 2:15 AM EDTSNOW 3.8Pine Grove, PA
Mar 14, 2:27 AM EDTSNOW 4.1Grantville, PA
Mar 14, 2:28 AM EDTSNOW 3Mount Carmel, PA
Mar 14, 2:35 AM EDTSNOW 2Aaronsburg, PA
Mar 14, 2:45 AM EDTSNOW 2Danville, PA
Mar 14, 2:45 AM EDTSNOW 3.2Stewartstown, PA
Mar 14, 3:00 AM EDTSNOW 1.5Nws State College, PA
Mar 14, 3:00 AM EDTSNOW 4Claysburg, PA
Mar 14, 3:00 AM EDTSNOW 4.5Summerdale, PA
Mar 14, 3:00 AM EDTSNOW 5Harrisburg Internationa, PASNOWFALL RATE OF 1-2 INCHES PER HOUR
Mar 14, 3:05 AM EDTSNOW 5.2Colonial Park, PA
Mar 14, 3:11 AM EDTSNOW 2Altoona, PA
Mar 14, 3:13 AM EDTSNOW 2Central City, PABALD KNOB SUMMIT
Mar 14, 3:15 AM EDTSNOW 4.51 N Milton, PA
Mar 14, 3:24 AM EDTSNOW 5.3Enola, PA
Mar 14, 3:25 AM EDTSNOW 5Middlesex, PA
Mar 14, 3:29 AM EDTSNOW 4.2Aaronsburg, PA2 INCHES IN THE LAST HOUR
Mar 14, 3:30 AM EDTSNOW 4.3Millersville, PA
Mar 14, 3:40 AM EDTSNOW 3Palmyra, PA
Mar 14, 3:46 AM EDTSNOW 4.5Cashtown, PA
Mar 14, 4:00 AM EDTSNOW 1Shinglehouse, PA
Mar 14, 4:00 AM EDTSNOW 6Akron, PA
Mar 14, 4:00 AM EDTSNOW 6Harrisburg Internationa, PAFROM METAR RMK
Mar 14, 4:00 AM EDTSNOW 6Harrisburg Internationa, PASNOWFALL ONE INCH IN LAST HOUR FROM ASOS RMK
Mar 14, 4:15 AM EDTSNOW 5Shippensburg, PA
Mar 14, 4:24 AM EDTSNOW 6Bedford, PA
Mar 14, 4:30 AM EDTSNOW 2.8Stormstown, PA
Mar 14, 4:30 AM EDTSNOW 5.1Williamsport, PA
Mar 14, 4:30 AM EDTSNOW 7Middlesex, PA
Mar 14, 4:35 AM EDTSNOW 6New Bloomfield, PA
Mar 14, 4:46 AM EDTSNOW 5Montandon, PA
Mar 14, 4:48 AM EDTSNOW 4Claysburg, PA

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Washington/Dulle, VA (KIAD), launched 12:00Z, 7.4 hours before the alert went out and 201 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, Washington/Dulle, VA at 12:00Z on 2017-03-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Washington/Dulle, VA at 12:00Z on 2017-03-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -128 square meters per square second.1939587897117136156175Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1574 m above ground
0-6 km bulk shear
88 kt
0-1 km storm-relative helicity
-128 m²/s²
0-3 km storm-relative helicity
-31 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

203 
WWUS41 KCTP 121924
WSWCTP

URGENT - WINTER WEATHER MESSAGE
National Weather Service State College PA
324 PM EDT Sun Mar 12 2017

PAZ006-011-012-018-019-025>028-034>037-041-042-045-046-049>053-
056>059-063>066-130730-
/O.UPG.KCTP.WS.A.0004.170314T0000Z-170315T0200Z/
/O.NEW.KCTP.WS.W.0003.170314T0000Z-170315T0200Z/
Potter-Cameron-Northern Clinton-Northern Centre-Southern Centre-
Blair-Huntingdon-Mifflin-Juniata-Bedford-Fulton-Franklin-Tioga-
Northern Lycoming-Sullivan-Southern Clinton-Southern Lycoming-
Union-Snyder-Montour-Northumberland-Columbia-Perry-Dauphin-
Schuylkill-Lebanon-Cumberland-Adams-York-Lancaster-
Including the cities of Coudersport, Emporium, Renovo, 
Philipsburg, State College, Altoona, Huntingdon, Mount Union, 
Lewistown, Mifflintown, Bedford, McConnellsburg, Chambersburg, 
Mansfield, Wellsboro, Trout Run, Laporte, Lock Haven, 
Williamsport, Lewisburg, Selinsgrove, Danville, Sunbury, 
Shamokin, Bloomsburg, Berwick, Newport, Harrisburg, Hershey, 
Pottsville, Lebanon, Carlisle, Gettysburg, York, and Lancaster
324 PM EDT Sun Mar 12 2017

...WINTER STORM WARNING IN EFFECT FROM 8 PM MONDAY TO 10 PM EDT
TUESDAY...

The National Weather Service in State College has issued a Winter
Storm Warning for Heavy Snow, which is in effect from 8 PM Monday
to 10 PM EDT Tuesday. The Winter Storm Watch is no longer in 
effect.

* LOCATIONS...The Central and Northeastern Mountains and the 
Susquehanna Valley.

* HAZARD TYPES...Heavy snow.

* SNOW ACCUMULATIONS...10 to 18 inches.

* TIMING...Snow will move into southern PA Monday evening. The
  snow will rapidly cover the entire area before midnight. The
  heaviest snow will occur Monday night through noon on Tuesday.
  Additional light snow is expected Tuesday afternoon and evening. 

* IMPACTS...The heavy snow will make many roads impassable and 
  may produce widespread power outages due to the weight of the 
  snow on tree limbs and power lines. 

* WINDS...Southeast at 5 to 10 mph turning to the east and then
  north on Tuesday. Gusts may get into the 20s on Tuesday in the
  Susquehanna Valley.

* TEMPERATURES...Mid 20s to lower 30s.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

The Pennsylvania Department of Transportation reminds motorists
to adjust speeds based on driving conditions and to take it slow
in ice and snow.

&&

$$

PAZ004-005-010-017-024-033-130730-
/O.UPG.KCTP.WS.A.0004.170314T0000Z-170315T0200Z/
/O.NEW.KCTP.WS.W.0003.170314T0000Z-170315T1200Z/
Warren-McKean-Elk-Clearfield-Cambria-Somerset-
Including the cities of Warren, Bradford, St. Marys, Ridgway, 
DuBois, Clearfield, Johnstown, and Somerset
324 PM EDT Sun Mar 12 2017

...WINTER STORM WARNING IN EFFECT FROM 8 PM MONDAY TO 8 AM EDT
WEDNESDAY...

The National Weather Service in State College has issued a Winter
Storm Warning for Heavy Snow, which is in effect from 8 PM Monday
to 8 AM EDT Wednesday. The Winter Storm Watch is no longer in 
effect.

* SNOW ACCUMULATIONS...8 to 14 inches.

* LOCATIONS...The Laurel and Allegheny Mountains.

* HAZARD TYPES...Heavy snow.

* TIMING...Snow will move into northwestern PA late Monday
  afternoon and into the Laurels after sunset Monday. The snow
  will rapidly cover the entire area before midnight. The snow
  will be rather constant, but the heaviest amounts may occur late
  Monday night.

* IMPACTS...The heavy snow will make many roads impassable and may
  produce power outages due to the weight of the snow on tree
  limbs and power lines. 

* WINDS...Southeast at 5 to 10 mph turning to the east and then
  north on Tuesday. Gusts may be into the 20s Monday night.

* TEMPERATURES...In the 20s.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

The Pennsylvania Department of Transportation reminds motorists
to adjust speeds based on driving conditions and to take it slow
in ice and snow.

&&

$$
8 follow-up statements
725 
WWUS41 KCTP 130139
WSWCTP

URGENT - WINTER WEATHER MESSAGE
National Weather Service State College PA
939 PM EDT Sun Mar 12 2017

PAZ006-011-012-018-019-025>028-034>037-041-042-045-046-049>053-
056>059-063>066-131345-
/O.CON.KCTP.WS.W.0003.170314T0000Z-170315T0200Z/
Potter-Cameron-Northern Clinton-Northern Centre-Southern Centre-
Blair-Huntingdon-Mifflin-Juniata-Bedford-Fulton-Franklin-Tioga-
Northern Lycoming-Sullivan-Southern Clinton-Southern Lycoming-
Union-Snyder-Montour-Northumberland-Columbia-Perry-Dauphin-
Schuylkill-Lebanon-Cumberland-Adams-York-Lancaster-
Including the cities of Coudersport, Emporium, Renovo, 
Philipsburg, State College, Altoona, Huntingdon, Mount Union, 
Lewistown, Mifflintown, Bedford, McConnellsburg, Chambersburg, 
Mansfield, Wellsboro, Trout Run, Laporte, Lock Haven, 
Williamsport, Lewisburg, Selinsgrove, Danville, Sunbury, 
Shamokin, Bloomsburg, Berwick, Newport, Harrisburg, Hershey, 
Pottsville, Lebanon, Carlisle, Gettysburg, York, and Lancaster
939 PM EDT Sun Mar 12 2017

...WINTER STORM WARNING REMAINS IN EFFECT FROM 8 PM MONDAY TO
10 PM EDT TUESDAY...

* LOCATIONS...The Central and Northeastern Mountains and the 
  Susquehanna Valley.

* HAZARD TYPES...Heavy snow.

* SNOW ACCUMULATIONS...9 to 15 inches, with the greatest amounts
  across the Lower Susquehanna Valley northeast into the Poconos.

* TIMING...Snow will move into southern Pennsylvania Monday
  evening. The snow will rapidly cover the entire area before
  midnight. The heaviest snow will occur Monday night through noon
  on Tuesday. Additional light snow is expected Tuesday afternoon
  and evening.

* IMPACTS...Travel will become quite difficult, with snow covered,
  slippery roads, and poor visibilities. The worst conditions will
  likely be early Tuesday morning.

* WINDS...Northeast 5 to 10 mph with gusts up to 25 mph.

* TEMPERATURES...In the upper 20s.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

The Pennsylvania Department of Transportation reminds motorists
to adjust speeds based on driving conditions and to take it slow
in ice and snow.

&&

$$

PAZ004-005-010-017-024-033-131345-
/O.CON.KCTP.WS.W.0003.170314T0000Z-170315T1200Z/
Warren-McKean-Elk-Clearfield-Cambria-Somerset-
Including the cities of Warren, Bradford, St. Marys, Ridgway, 
DuBois, Clearfield, Johnstown, and Somerset
939 PM EDT Sun Mar 12 2017

...WINTER STORM WARNING REMAINS IN EFFECT FROM 8 PM MONDAY TO
8 AM EDT WEDNESDAY...

* SNOW ACCUMULATIONS...7 to 11 inches.

* LOCATIONS...The Laurel and Allegheny Mountains.

* HAZARD TYPES...Heavy snow.

* TIMING...Snow will move into northwest Pennsylvania late Monday
  afternoon and into the Laurels after sunset Monday. The heaviest
  snow will likely fall late Monday night, but lighter snow will
  last through Tuesday night.

* IMPACTS...Travel will become quite difficult, with snow covered,
  slippery roads, and poor visibilities. The worst conditions will
  likely be early Tuesday morning. 

* WINDS...Northeast 5 to 15 mph with gusts up to 25 mph.

* TEMPERATURES...In the lower 20s.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

The Pennsylvania Department of Transportation reminds motorists
to adjust speeds based on driving conditions and to take it slow
in ice and snow.

&&

$$
595 
WWUS41 KCTP 130905
WSWCTP

URGENT - WINTER WEATHER MESSAGE
National Weather Service State College PA
505 AM EDT Mon Mar 13 2017

PAZ006-011-012-018-019-025>028-034>037-041-042-045-046-049>053-
056>059-063>066-140100-
/O.CON.KCTP.WS.W.0003.170314T0000Z-170315T0200Z/
Potter-Cameron-Northern Clinton-Northern Centre-Southern Centre-
Blair-Huntingdon-Mifflin-Juniata-Bedford-Fulton-Franklin-Tioga-
Northern Lycoming-Sullivan-Southern Clinton-Southern Lycoming-
Union-Snyder-Montour-Northumberland-Columbia-Perry-Dauphin-
Schuylkill-Lebanon-Cumberland-Adams-York-Lancaster-
Including the cities of Coudersport, Emporium, Renovo, 
Philipsburg, State College, Altoona, Huntingdon, Mount Union, 
Lewistown, Mifflintown, Bedford, McConnellsburg, Chambersburg, 
Mansfield, Wellsboro, Trout Run, Laporte, Lock Haven, 
Williamsport, Lewisburg, Selinsgrove, Danville, Sunbury, 
Shamokin, Bloomsburg, Berwick, Newport, Harrisburg, Hershey, 
Pottsville, Lebanon, Carlisle, Gettysburg, York, and Lancaster
505 AM EDT Mon Mar 13 2017

...WINTER STORM WARNING REMAINS IN EFFECT FROM 8 PM THIS EVENING
TO 10 PM EDT TUESDAY...

* LOCATIONS...The Central and Northeastern Mountains and the 
  Susquehanna Valley.

* HAZARD TYPES...Heavy snow.

* SNOW ACCUMULATIONS...9 to 15 inches, with portions of the Middle
  to Lower Susquehanna River Valley to the Poconos receiving 18 
  inches or more.

* TIMING...Snow will move into southern Pennsylvania this evening.
  The snow will rapidly overspread all of central Pennsylvania by
  midnight. The heaviest snow will fall from midnight through mid
  morning Tuesday. Additional light snow is expected Tuesday 
  afternoon and evening.

* IMPACTS...Travel will become difficult late tonight through
  Tuesday afternoon, with snow covered, slippery roads, and poor
  visibilities. 

* WINDS...Northeast 5 to 10 mph with gusts up to 25 mph.

* TEMPERATURES...In the upper 20s.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

The Pennsylvania Department of Transportation reminds motorists
to adjust speeds based on driving conditions and to take it slow
in ice and snow.

&&

$$

PAZ004-005-010-017-024-033-140100-
/O.CON.KCTP.WS.W.0003.170314T0000Z-170315T1200Z/
Warren-McKean-Elk-Clearfield-Cambria-Somerset-
Including the cities of Warren, Bradford, St. Marys, Ridgway, 
DuBois, Clearfield, Johnstown, and Somerset
505 AM EDT Mon Mar 13 2017

...WINTER STORM WARNING REMAINS IN EFFECT FROM 8 PM THIS EVENING
TO 8 AM EDT WEDNESDAY...

* SNOW ACCUMULATIONS...7 to 11 inches.

* LOCATIONS...The Laurel and Allegheny Mountains.

* HAZARD TYPES...Heavy snow.

* TIMING...Snow will move into northwest Pennsylvania late this
  afternoon and into the Laurels after sunset this evening. The
  heaviest snow will fall late this evening through Tuesday
  morning, but lighter snow will last through Tuesday night.

* IMPACTS...Travel will become quite difficult, with snow 
  covered, slippery roads, and poor visibilities. The worst 
  conditions will likely be early Tuesday morning.

* WINDS...Northeast 5 to 15 mph with gusts up to 25 mph.

* TEMPERATURES...In the lower 20s.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

The Pennsylvania Department of Transportation reminds motorists
to adjust speeds based on driving conditions and to take it slow
in ice and snow.

&&

$$

DeVoir
055 
WWUS41 KCTP 131536
WSWCTP

URGENT - WINTER WEATHER MESSAGE
National Weather Service State College PA
1136 AM EDT Mon Mar 13 2017

PAZ006-011-012-018-019-025-026-034>036-140345-
/O.CON.KCTP.WS.W.0003.170314T0000Z-170315T0200Z/
Potter-Cameron-Northern Clinton-Northern Centre-Southern Centre-
Blair-Huntingdon-Bedford-Fulton-Franklin-
Including the cities of Coudersport, Emporium, Renovo, 
Philipsburg, State College, Altoona, Huntingdon, Mount Union, 
Bedford, McConnellsburg, and Chambersburg
1136 AM EDT Mon Mar 13 2017

...WINTER STORM WARNING REMAINS IN EFFECT FROM 8 PM THIS EVENING
TO 10 PM EDT TUESDAY...

* LOCATIONS...The Central Mountains.

* HAZARD TYPES...Heavy snow.

* SNOW ACCUMULATIONS...10 to 15 inches. Higher amounts are
  possible on the tops and windward side of ridges.

* TIMING...Snow will move into far southern and far northern
  Pennsylvania around or after sunset. The snow will rapidly
  overspread all of central Pennsylvania by midnight. The heaviest
  snow will fall from midnight through mid morning Tuesday. The
  morning commute on Tuesday will be extremely difficult.
  Additional, lighter snow is expected Tuesday afternoon and evening.

* IMPACTS...Travel will become very difficult late tonight through
  Tuesday afternoon, with snow covered, slippery roads, and poor
  visibilities. Avoid travel, if at all possible, late tonight and
  Tuesday morning.

* WINDS...Southeast turning to the northeast overnight and then to
  the north on Tuesday. Speed generally 5 to 10 mph with gusts up
  to 20 mph.

* TEMPERATURES...25 to 30 degrees.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

The Pennsylvania Department of Transportation reminds motorists
to adjust speeds based on driving conditions and to take it slow
in ice and snow.

&&

$$

PAZ004-005-010-017-024-033-140345-
/O.CON.KCTP.WS.W.0003.170314T0000Z-170315T1200Z/
Warren-McKean-Elk-Clearfield-Cambria-Somerset-
Including the cities of Warren, Bradford, St. Marys, Ridgway, 
DuBois, Clearfield, Johnstown, and Somerset
1136 AM EDT Mon Mar 13 2017

...WINTER STORM WARNING REMAINS IN EFFECT FROM 8 PM THIS EVENING
TO 8 AM EDT WEDNESDAY...

* SNOW ACCUMULATIONS...7 to 12 inches. Locally higher amounts are
  possible on the ridge tops. 

* LOCATIONS...The Laurel and Allegheny Mountains.

* HAZARD TYPES...Heavy snow.

* TIMING...Snow will move into northwest Pennsylvania early this
  evening and into the Laurels late this evening. The heaviest
  snow will fall late this evening through mid-day Tuesday.
  Lighter snow will last through Tuesday night and perhaps
  Wednesday morning as the wind turns to the northwest and the
  steady snow turns to lake effect snow showers. 

* IMPACTS...Travel will become quite difficult, with snow covered,
  slippery roads, and poor visibilities. The worst conditions will
  likely be early Tuesday morning. 

* WINDS...Northeast 5 to 15 mph with gusts up to 25 mph.

* TEMPERATURES...In the lower 20s.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

The Pennsylvania Department of Transportation reminds motorists
to adjust speeds based on driving conditions and to take it slow
in ice and snow.

&&

$$

PAZ027-028-037-041-042-045-046-049>053-056>059-063>066-140345-
/O.CON.KCTP.WS.W.0003.170314T0000Z-170315T0200Z/
Mifflin-Juniata-Tioga-Northern Lycoming-Sullivan-Southern Clinton-
Southern Lycoming-Union-Snyder-Montour-Northumberland-Columbia-
Perry-Dauphin-Schuylkill-Lebanon-Cumberland-Adams-York-Lancaster-
Including the cities of Lewistown, Mifflintown, Mansfield, 
Wellsboro, Trout Run, Laporte, Lock Haven, Williamsport, 
Lewisburg, Selinsgrove, Danville, Sunbury, Shamokin, Bloomsburg, 
Berwick, Newport, Harrisburg, Hershey, Pottsville, Lebanon, 
Carlisle, Gettysburg, York, and Lancaster
1136 AM EDT Mon Mar 13 2017

...WINTER STORM WARNING REMAINS IN EFFECT FROM 8 PM THIS EVENING
TO 10 PM EDT TUESDAY...

* LOCATIONS...The Central and Northeastern Mountains and the 
  Susquehanna Valley.

* HAZARD TYPES...Heavy snow.

* SNOW ACCUMULATIONS...12 to 18 inches. Higher amounts of 18 to 24
  inches are possible on the ridges of the Poconos and in the
  Middle Susquehanna Valley. 

* TIMING...Snow will move into far southern and far northern
  Pennsylvania around or after sunset. The snow will rapidly
  overspread all of central Pennsylvania by midnight. The heaviest
  snow will fall from midnight through Tuesday afternoon,
  especially right during the morning commute. The morning commute
  on Tuesday will be extremely difficult. Additional, lighter snow
  is expected to linger into Tuesday evening.

* IMPACTS...Travel will become difficult to nearly impossible late
  tonight through Tuesday afternoon, with snow covered, slippery
  roads, and poor visibilities. Avoid travel, if at all possible.


* WINDS...Southeast at 5 to 10 mph turning quickly to the
  northeast and increasing to 10 to 15 mph. The wind will be
  faster in the lower Susquehanna Valley, where speeds will be
  more like 10 to 20 mph with gusts of 25 to 30 mph at times.

* TEMPERATURES...In the upper 20s to lower 30s.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

The Pennsylvania Department of Transportation reminds motorists
to adjust speeds based on driving conditions and to take it slow
in ice and snow.

&&

$$
659 
WWUS41 KCTP 131906
WSWCTP

URGENT - WINTER WEATHER MESSAGE
National Weather Service State College PA
306 PM EDT Mon Mar 13 2017

PAZ006-011-012-018-019-025-026-034>036-140715-
/O.CON.KCTP.WS.W.0003.170314T0000Z-170315T0200Z/
Potter-Cameron-Northern Clinton-Northern Centre-Southern Centre-
Blair-Huntingdon-Bedford-Fulton-Franklin-
Including the cities of Coudersport, Emporium, Renovo, 
Philipsburg, State College, Altoona, Huntingdon, Mount Union, 
Bedford, McConnellsburg, and Chambersburg
306 PM EDT Mon Mar 13 2017

...WINTER STORM WARNING REMAINS IN EFFECT FROM 8 PM THIS EVENING
TO 10 PM EDT TUESDAY...

* LOCATIONS...The Central Mountains.

* HAZARD TYPES...Heavy snow.

* SNOW ACCUMULATIONS...10 to 16 inches. Higher amounts are
  possible on the tops and windward side of ridges.

* TIMING...Snow will move into far southern and far northern
  Pennsylvania around or after sunset. The snow will rapidly
  overspread all of central Pennsylvania by midnight. The heaviest
  snow will fall from midnight through mid morning Tuesday.
  Additional, lighter snow is expected Tuesday afternoon and
  evening.

* IMPACTS...Travel will become very difficult late tonight through
  Tuesday afternoon, with snow covered, slippery roads, and poor
  visibilities. The morning commute on Tuesday will be extremely
  difficult if not impossible. Avoid travel, if at all possible.
  Avoid travel, if at all possible, late tonight and Tuesday morning.

* WINDS...Southeast turning to the northeast overnight and then 
  to the north on Tuesday. Speed generally 5 to 10 mph with 
  gusts up to 20 mph.

* TEMPERATURES...25 to 30 degrees.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

The Pennsylvania Department of Transportation reminds motorists
to adjust speeds based on driving conditions and to take it slow
in ice and snow.

&&

$$

PAZ004-005-010-017-024-033-140715-
/O.CON.KCTP.WS.W.0003.170314T0000Z-170315T1200Z/
Warren-McKean-Elk-Clearfield-Cambria-Somerset-
Including the cities of Warren, Bradford, St. Marys, Ridgway, 
DuBois, Clearfield, Johnstown, and Somerset
306 PM EDT Mon Mar 13 2017

...WINTER STORM WARNING REMAINS IN EFFECT FROM 8 PM THIS EVENING
TO 8 AM EDT WEDNESDAY...

* SNOW ACCUMULATIONS...8 to 12 inches. Locally higher amounts are
  possible on the ridge tops.

* LOCATIONS...The Laurel and Allegheny Mountains.

* HAZARD TYPES...Heavy snow.

* TIMING...Snow will move into northwest Pennsylvania early this
  evening and into the Laurels by Midnight. The heaviest snow will
  fall late tonight through mid-day Tuesday. Lighter snow will
  last through Tuesday night and perhaps Wednesday morning as the
  wind turns to the northwest and the steady snow turns to lake
  effect snow showers.

* IMPACTS...Travel will become extremely difficult, with snow
  covered, slippery roads, and poor visibilities. The worst
  conditions will likely be early Tuesday morning.

* WINDS...East turning steadily to the north and northwest through
  the storm. Speeds will be less than 10 mph during the night, but
  10 to 20 mph with gusts near 30 mph later in the day on Tuesday.

* TEMPERATURES...In the lower 20s.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

The Pennsylvania Department of Transportation reminds motorists
to adjust speeds based on driving conditions and to take it slow
in ice and snow.

&&

$$

PAZ027-028-037-041-042-045-046-049>053-056>059-063>066-140715-
/O.CON.KCTP.WS.W.0003.170314T0000Z-170315T0200Z/
Mifflin-Juniata-Tioga-Northern Lycoming-Sullivan-Southern Clinton-
Southern Lycoming-Union-Snyder-Montour-Northumberland-Columbia-
Perry-Dauphin-Schuylkill-Lebanon-Cumberland-Adams-York-Lancaster-
Including the cities of Lewistown, Mifflintown, Mansfield, 
Wellsboro, Trout Run, Laporte, Lock Haven, Williamsport, 
Lewisburg, Selinsgrove, Danville, Sunbury, Shamokin, Bloomsburg, 
Berwick, Newport, Harrisburg, Hershey, Pottsville, Lebanon, 
Carlisle, Gettysburg, York, and Lancaster
306 PM EDT Mon Mar 13 2017

...WINTER STORM WARNING REMAINS IN EFFECT FROM 8 PM THIS EVENING
TO 10 PM EDT TUESDAY...

* LOCATIONS...The Poconos and the Susquehanna Valley.

* HAZARD TYPES...Heavy snow.

* SNOW ACCUMULATIONS...16 to 20 inches. Higher amounts of 20 to 24
  inches are possible, mainly on the ridges of the Poconos and in
  the Middle Susquehanna Valley.

* TIMING...Snow will move into far southern and far northern
  Pennsylvania shortly after sunset. The snow will rapidly
  overspread all of central Pennsylvania by midnight. The heaviest
  snow will fall from just after midnight through Tuesday
  afternoon, especially right during the morning commute.
  Additional, lighter snow is expected to linger into Tuesday
  evening.

* IMPACTS...Travel will become extremely difficult late tonight
  through Tuesday afternoon, with snow covered, slippery roads,
  and poor visibilities. The morning commute on Tuesday will be
  extremely difficult if not impossible. Avoid travel, if at all
  possible.

* WINDS...Southeast at 5 to 10 mph turning quickly to the
  northeast and increasing to 10 to 15 mph. The wind will be
  faster in the lower Susquehanna Valley, where speeds will be
  more like 10 to 20 mph with gusts of 25 to 30 mph at times.

* TEMPERATURES...In the upper 20s to lower 30s.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

The Pennsylvania Department of Transportation reminds motorists
to adjust speeds based on driving conditions and to take it slow
in ice and snow.

&&

$$
479 
WWUS41 KCTP 140237
WSWCTP

URGENT - WINTER WEATHER MESSAGE
National Weather Service State College PA
1037 PM EDT Mon Mar 13 2017

PAZ006-011-012-018-019-025-026-034>036-141445-
/O.CON.KCTP.WS.W.0003.000000T0000Z-170315T0200Z/
Potter-Cameron-Northern Clinton-Northern Centre-Southern Centre-
Blair-Huntingdon-Bedford-Fulton-Franklin-
Including the cities of Coudersport, Emporium, Renovo, 
Philipsburg, State College, Altoona, Huntingdon, Mount Union, 
Bedford, McConnellsburg, and Chambersburg
1037 PM EDT Mon Mar 13 2017

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 10 PM EDT
TUESDAY...

* LOCATIONS...The Central Mountains.

* HAZARD TYPES...Heavy snow.

* SNOW ACCUMULATIONS...10 to 16 inches. Higher amounts are 
  possible on the tops and windward side of ridges.

* TIMING...Snow will develop across all of central Pennsylvania by
  shortly after midnight. The heaviest snow will fall between 3 AM
  and 10 AM Tuesday when snowfall rates of up to 2 inches per hour
  are likely. Additional, lighter snow is expected to continue 
  Tuesday afternoon and evening.

* IMPACTS...Travel will become very difficult late tonight 
  through Tuesday afternoon, with snow covered, slippery roads, 
  and poor visibilities. The morning commute on Tuesday will be 
  extremely difficult if not impossible. Avoid travel, if at all 
  possible. Avoid travel, if at all possible, late tonight and 
  Tuesday morning.

* WINDS...Southeast turning to the northeast overnight and then 
  to the north on Tuesday. Speed generally 5 to 10 mph with 
  gusts up to 20 mph.

* TEMPERATURES...25 to 30 degrees.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

The Pennsylvania Department of Transportation reminds motorists
to adjust speeds based on driving conditions and to take it slow
in ice and snow.

&&

$$

PAZ004-005-010-017-024-033-141445-
/O.CON.KCTP.WS.W.0003.000000T0000Z-170315T1200Z/
Warren-McKean-Elk-Clearfield-Cambria-Somerset-
Including the cities of Warren, Bradford, St. Marys, Ridgway, 
DuBois, Clearfield, Johnstown, and Somerset
1037 PM EDT Mon Mar 13 2017

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 8 AM EDT
WEDNESDAY...

* SNOW ACCUMULATIONS...8 to 12 inches. Locally higher amounts 
  are possible on the ridge tops.

* LOCATIONS...The Laurel and Allegheny Mountains.

* HAZARD TYPES...Heavy snow.

* TIMING...Snow will become steadier and fall heavy at times 
  late tonight through the mid-day hours Tuesday. Lighter snow 
  will last through Tuesday night and perhaps Wednesday morning 
  as the wind turns to the northwest and the steady snow turns 
  to lake effect snow showers.

* IMPACTS...Travel will become extremely difficult, with snow 
  covered, slippery roads, and poor visibilities. The worst 
  conditions will likely be early Tuesday morning.

* WINDS...East turning steadily to the north and northwest 
  through the storm. Speeds will be less than 10 mph during the 
  night, but 10 to 20 mph with gusts near 30 mph later in the 
  day on Tuesday.

* TEMPERATURES...In the lower 20s.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

The Pennsylvania Department of Transportation reminds motorists
to adjust speeds based on driving conditions and to take it slow
in ice and snow.

&&

$$

PAZ027-028-037-041-042-045-046-049>053-056>059-063>066-141445-
/O.CON.KCTP.WS.W.0003.000000T0000Z-170315T0200Z/
Mifflin-Juniata-Tioga-Northern Lycoming-Sullivan-Southern Clinton-
Southern Lycoming-Union-Snyder-Montour-Northumberland-Columbia-
Perry-Dauphin-Schuylkill-Lebanon-Cumberland-Adams-York-Lancaster-
Including the cities of Lewistown, Mifflintown, Mansfield, 
Wellsboro, Trout Run, Laporte, Lock Haven, Williamsport, 
Lewisburg, Selinsgrove, Danville, Sunbury, Shamokin, Bloomsburg, 
Berwick, Newport, Harrisburg, Hershey, Pottsville, Lebanon, 
Carlisle, Gettysburg, York, and Lancaster
1037 PM EDT Mon Mar 13 2017

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 10 PM EDT
TUESDAY...

* LOCATIONS...The Poconos and the Susquehanna Valley.

* HAZARD TYPES...Heavy snow.

* SNOW ACCUMULATIONS...16 to 20 inches. Higher amounts of 20 to 
  24 inches are possible, mainly on the ridges of the Western 
  Poconos and across the Middle and Lower Susquehanna Valley.

* TIMING...Snow falling along and to the southeast of Interstate
  81 late this evening will spread quickly to the north across 
  the rest of East-Central Pennsylvania by shortly after
  midnight. The heaviest snow will fall from just after midnight
  through Tuesday afternoon, especially right during the morning 
  commute. Additional, lighter snow is expected to linger into 
  Tuesday evening. A nearly stationary band of very heavy snow 
  falling at the rate of 2-4 inches per hour could set up near 
  the Interstate 81 and 83 corridors from York...to 
  Harrisburg...Lebanon and Pottsville for several hours between 
  2 AM and 9 AM Tuesday.   

* IMPACTS...Travel will become extremely difficult late tonight 
  through Tuesday afternoon, with snow covered, slippery roads, 
  and poor visibilities. The morning commute on Tuesday will be 
  extremely difficult if not impossible. Avoid travel, if at all 
  possible.

* WINDS...Southeast at 5 to 10 mph turning quickly to the 
  northeast and increasing to 10 to 15 mph. The wind will be 
  faster in the lower Susquehanna Valley, where speeds will be 
  more like 10 to 20 mph with gusts of 25 to 30 mph at times.

* TEMPERATURES...In the upper 20s to lower 30s.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

The Pennsylvania Department of Transportation reminds motorists
to adjust speeds based on driving conditions and to take it slow
in ice and snow.

&&

$$

Lambert
832 
WWUS41 KCTP 140826
WSWCTP

URGENT - WINTER WEATHER MESSAGE
National Weather Service State College PA
426 AM EDT Tue Mar 14 2017

PAZ010-017-150000-
/O.CAN.KCTP.WS.W.0003.000000T0000Z-170315T1200Z/
/O.NEW.KCTP.WW.Y.0011.170314T0826Z-170316T0000Z/
Elk-Clearfield-
Including the cities of St. Marys, Ridgway, DuBois, 
and Clearfield
426 AM EDT Tue Mar 14 2017

...WINTER WEATHER ADVISORY IN EFFECT UNTIL 8 PM EDT WEDNESDAY...
...WINTER STORM WARNING IS CANCELLED...

The National Weather Service in State College has issued a Winter
Weather Advisory which is in effect until 8 PM EDT Wednesday. The
Winter Storm Warning has been cancelled.

Hazardous Weather...

* Total snow accumulation 4 to 6 inches. 

* Light snow will continue this morning with more persistent and 
  heavier snow showers expected later this afternoon through 
  Wednesday. 

* Wind gusts 30 to 40 mph tonight and Wednesday will produce
  blowing and drifting snow with wind chills around zero.

Impacts...

* Hazardous travel on snow covered roads and reduced visibility.

* Isolated power outages. 

* Cancellations and delays. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

The Pennsylvania Department of Transportation reminds motorists
to adjust speeds based on driving conditions and to take it slow
in ice and snow.

&&

$$

PAZ011-150000-
/O.CAN.KCTP.WS.W.0003.000000T0000Z-170315T0200Z/
/O.NEW.KCTP.WW.Y.0011.170314T0826Z-170316T0000Z/
Cameron-
Including the city of Emporium
426 AM EDT Tue Mar 14 2017

...WINTER WEATHER ADVISORY IN EFFECT UNTIL 8 PM EDT WEDNESDAY...
...WINTER STORM WARNING IS CANCELLED...

The National Weather Service in State College has issued a Winter
Weather Advisory which is in effect until 8 PM EDT Wednesday. The
Winter Storm Warning has been cancelled.

Hazardous Weather...

* Total snow accumulation 4 to 6 inches. 

* Light snow will continue this morning with more persistent and 
  heavier snow showers expected later this afternoon through 
  Wednesday. 

* Wind gusts 30 to 40 mph tonight and Wednesday will produce
  blowing and drifting snow with wind chills around zero.

Impacts...

* Hazardous travel on snow covered roads and reduced visibility.

* Isolated power outages. 

* Cancellations and delays. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

The Pennsylvania Department of Transportation reminds motorists
to adjust speeds based on driving conditions and to take it slow
in ice and snow.

&&

$$

PAZ004-005-024-033-150000-
/O.EXT.KCTP.WS.W.0003.000000T0000Z-170316T0000Z/
Warren-McKean-Cambria-Somerset-
Including the cities of Warren, Bradford, Johnstown, and Somerset
426 AM EDT Tue Mar 14 2017

...WINTER STORM WARNING NOW IN EFFECT UNTIL 8 PM EDT WEDNESDAY...

Hazardous Weather...

* Total snow accumulation 8 to 12 inches. 

* Light snow will continue this morning with more persistent and 
  heavier snow showers expected later this afternoon through 
  Wednesday. 

* Wind gusts 30 to 40 mph tonight and Wednesday will produce
  blowing and drifting snow with wind chills around zero.

Impacts...

* Dangerous travel on snow covered roads with low visibility.

* Isolated power outages. 

* Cancellations and delays. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

The Pennsylvania Department of Transportation reminds motorists
to adjust speeds based on driving conditions and to take it slow
in ice and snow.

&&

$$

PAZ006-012-018-019-025>027-034>037-041-045-046-150000-
/O.CON.KCTP.WS.W.0003.000000T0000Z-170315T0200Z/
Potter-Northern Clinton-Northern Centre-Southern Centre-Blair-
Huntingdon-Mifflin-Bedford-Fulton-Franklin-Tioga-
Northern Lycoming-Southern Clinton-Southern Lycoming-
Including the cities of Coudersport, Renovo, Philipsburg, 
State College, Altoona, Huntingdon, Mount Union, Lewistown, 
Bedford, McConnellsburg, Chambersburg, Mansfield, Wellsboro, 
Trout Run, Lock Haven, and Williamsport
426 AM EDT Tue Mar 14 2017

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 10 PM EDT THIS
EVENING...

Hazardous Weather...

* Total snow accumulation 8 to 15 inches. 

* Snow will continue heavy at times this morning before gradually
  tapering off this afternoon. Snowfall rates of 1 to 2 inches per
  hour are likely especially east of I-99. 

* Wind gusts 25 to 35 mph into tonight will produce blowing and
  drifting snow with wind chills falling into the single digits.

Impacts...

* Dangerous travel on snow covered roads with very low visibility. 

* Power outages. 

* Cancellations and delays. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

The Pennsylvania Department of Transportation reminds motorists
to adjust speeds based on driving conditions and to take it slow
in ice and snow.

&&

$$

PAZ028-042-049>053-056>059-063>066-150000-
/O.CON.KCTP.WS.W.0003.000000T0000Z-170315T0200Z/
Juniata-Sullivan-Union-Snyder-Montour-Northumberland-Columbia-
Perry-Dauphin-Schuylkill-Lebanon-Cumberland-Adams-York-Lancaster-
Including the cities of Mifflintown, Laporte, Lewisburg, 
Selinsgrove, Danville, Sunbury, Shamokin, Bloomsburg, Berwick, 
Newport, Harrisburg, Hershey, Pottsville, Lebanon, Carlisle, 
Gettysburg, York, and Lancaster
426 AM EDT Tue Mar 14 2017

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 10 PM EDT THIS
EVENING...

Hazardous Weather...

* Total snow accumulation 15 to 25 inches. 

* Snow will continue heavy at times this morning before gradually
  tapering off this afternoon. Snowfall rates of 1 to 2 inches per
  hour are likely with max rates up to 4 inches per hour and
  localized thundersnow possible.

* The heavy snow combined with increasing wind gusts from the
  north-northwest at 25 to 35 mph will produce near-blizzard
  conditions with significant blowing and drifting snow.

Impacts...

* Extremely dangerous travel on snow covered roads with very low
  visibility. Roads may be impassable. 

* Power outages. 

* Cancellations and delays. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

The Pennsylvania Department of Transportation reminds motorists
to adjust speeds based on driving conditions and to take it slow
in ice and snow.

&&

$$
MS
593 
WWUS41 KCTP 141429
WSWCTP

URGENT - WINTER WEATHER MESSAGE
National Weather Service State College PA
1029 AM EDT Tue Mar 14 2017

PAZ006-012-018-019-025>027-034>036-045-150200-
/O.CON.KCTP.WS.W.0003.000000T0000Z-170315T0200Z/
Potter-Northern Clinton-Northern Centre-Southern Centre-Blair-
Huntingdon-Mifflin-Bedford-Fulton-Franklin-Southern Clinton-
Including the cities of Coudersport, Renovo, Philipsburg, 
State College, Altoona, Huntingdon, Mount Union, Lewistown, 
Bedford, McConnellsburg, Chambersburg, and Lock Haven
1029 AM EDT Tue Mar 14 2017

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 10 PM EDT THIS
EVENING...

* LOCATIONS...The Central Mountains. 

* HAZARD...Heavy snow and blowing snow.

* SNOW ACCUMULATIONS...Total snow accumulation 8 to 15 inches with
  the greatest amounts east of State College and Huntingdon.

* TIMING...Snow will continue heavy at times through noon, but
  taper off rather quickly this afternoon from south to north. 

* WIND...Wind north at 10 to 15 mph with gusts 25 to 30 mph. This
  will lead to blowing and drifting snow. 

* IMPACTS...Dangerous, slowed travel due to snow covered roads and
  low visibility. Road closures possible. Isolated power outages
  possible. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

The Pennsylvania Department of Transportation reminds motorists
to adjust speeds based on driving conditions and to take it slow
in ice and snow.

&&

$$

PAZ004-005-024-033-150230-
/O.CON.KCTP.WS.W.0003.000000T0000Z-170316T0000Z/
Warren-McKean-Cambria-Somerset-
Including the cities of Warren, Bradford, Johnstown, and Somerset
1029 AM EDT Tue Mar 14 2017

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 8 PM EDT
WEDNESDAY...

* LOCATIONS...The Laurel Highlands and Northwest Mountains.

* HAZARD...Heavy snow and blowing snow.

* SNOW ACCUMULATIONS...Total snow accumulation 6 to 10 inches.

* TIMING...Light constant snow will transition to lake effect snow
  showers this afternoon and evening. Some of the lake effect snow
  showers will produce heavy snow at times. 

* WIND...Wind of 10 to 15 mph will increase to 15 to 20 mph
  tonight and become very gusty with gusts of 30 to 40 mph tonight
  and Wednesday. The wind will lead to blowing and drifting snow.

* IMPACTS...Dangerous, slowed travel due to snow covered roads and
  low visibility. Road closures possible. Isolated power outages
  possible.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

The Pennsylvania Department of Transportation reminds motorists
to adjust speeds based on driving conditions and to take it slow
in ice and snow.

&&

$$

PAZ028-037-041-042-046-049>053-056>059-063>066-150200-
/O.CON.KCTP.WS.W.0003.000000T0000Z-170315T0200Z/
Juniata-Tioga-Northern Lycoming-Sullivan-Southern Lycoming-Union-
Snyder-Montour-Northumberland-Columbia-Perry-Dauphin-Schuylkill-
Lebanon-Cumberland-Adams-York-Lancaster-
Including the cities of Mifflintown, Mansfield, Wellsboro, 
Trout Run, Laporte, Williamsport, Lewisburg, Selinsgrove, 
Danville, Sunbury, Shamokin, Bloomsburg, Berwick, Newport, 
Harrisburg, Hershey, Pottsville, Lebanon, Carlisle, Gettysburg, 
York, and Lancaster
1029 AM EDT Tue Mar 14 2017

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 10 PM EDT THIS
EVENING...

* LOCATIONS...The Central Mountains. 

* HAZARD...Heavy snow and blowing snow.

* SNOW ACCUMULATIONS...Total snow accumulation 18 to 24 inches in
  general. Some lighter amounts in far southern Lancaster and York
  Counties where the snow has mixed with or turned to sleet. 

* TIMING...The precipitation will continue heavy at times into the
  early afternoon, but will be tapering off from south to north
  through the late afternoon. The sleet should turn back to very
  light snow before ending.

* WIND...Wind north at 15 to 20 mph with gusts 25 to 35 mph. This
  may lead to blowing and drifting snow where the sleet has not
  mixed in.

* IMPACTS...Dangerous, slowed travel due to snow covered roads and
  low visibility. Road closures possible. Scattered power outages
  possible. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

The Pennsylvania Department of Transportation reminds motorists
to adjust speeds based on driving conditions and to take it slow
in ice and snow.

&&

$$

PAZ010-011-017-150230-
/O.CON.KCTP.WW.Y.0011.000000T0000Z-170316T0000Z/
Elk-Cameron-Clearfield-
Including the cities of St. Marys, Ridgway, Emporium, DuBois, 
and Clearfield
1029 AM EDT Tue Mar 14 2017

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT
WEDNESDAY...

* Total snow accumulation 4 to 6 inches.

* Light snow will continue this morning with more persistent and 
  heavier snow showers expected later this afternoon through 
  Wednesday.

* Wind gusts 30 to 40 mph tonight and Wednesday will produce 
  blowing and drifting snow with wind chills around zero.

* Hazardous travel on snow covered roads and reduced visibility.

* Isolated power outages.

* Cancellations and delays.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

The Pennsylvania Department of Transportation reminds motorists
to adjust speeds based on driving conditions and to take it slow
in ice and snow.

&&

$$
822 
WWUS41 KCTP 141856
WSWCTP

URGENT - WINTER WEATHER MESSAGE
National Weather Service State College PA
256 PM EDT Tue Mar 14 2017

PAZ004-005-024-033-150700-
/O.CAN.KCTP.WS.W.0003.000000T0000Z-170316T0000Z/
/O.NEW.KCTP.WW.Y.0012.170314T1856Z-170316T0000Z/
Warren-McKean-Cambria-Somerset-
Including the cities of Warren, Bradford, Johnstown, and Somerset
256 PM EDT Tue Mar 14 2017

...WINTER WEATHER ADVISORY IN EFFECT UNTIL 8 PM EDT WEDNESDAY...
...WINTER STORM WARNING IS CANCELLED...

The National Weather Service in State College has issued a Winter
Weather Advisory for Heavy Snow and Blowing Snow, which is in 
effect until 8 PM EDT Wednesday. The Winter Storm Warning has been
cancelled.

* LOCATIONS...The Laurel Highlands and Northwest Mountains.

* HAZARDS...Heavy snow and blowing snow.

* SNOW ACCUMULATIONS...3 to 6 inches by the end of the day
  Wednesday.

* TIMING...Light constant snow will transition to lake effect snow
  showers this evening. Some of the lake effect snow showers will
  produce heavy snow at times.

* WIND...The northwest wind of 10 to 20 mph will increase to 15 to
  25 mph on Wednesday and become very gusty with gusts up to 50
  mph on Wednesday. 

* IMPACTS...The snow will lead to snow covered roads. Strong winds
  will create blowing snow, reduced visibility, and significant
  snow drifts.

* TEMPERATURES...Lows around 10 above and highs on Wednesday in
  the lower to mid 20s. 

* WIND CHILLS...Zero to 10 below overnight and Wednesday.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

The Pennsylvania Department of Transportation reminds motorists
to adjust speeds based on driving conditions and to take it slow
in ice and snow.

&&

$$

PAZ006-012-037-041-042-045-046-049>053-058-150000-
/O.CAN.KCTP.WS.W.0003.000000T0000Z-170315T0200Z/
/O.NEW.KCTP.WW.Y.0012.170314T1856Z-170315T0000Z/
Potter-Northern Clinton-Tioga-Northern Lycoming-Sullivan-
Southern Clinton-Southern Lycoming-Union-Snyder-Montour-
Northumberland-Columbia-Schuylkill-
Including the cities of Coudersport, Renovo, Mansfield, 
Wellsboro, Trout Run, Laporte, Lock Haven, Williamsport, 
Lewisburg, Selinsgrove, Danville, Sunbury, Shamokin, Bloomsburg, 
Berwick, and Pottsville
256 PM EDT Tue Mar 14 2017

...WINTER WEATHER ADVISORY IN EFFECT UNTIL 8 PM EDT THIS
EVENING...
...WINTER STORM WARNING IS CANCELLED...

The National Weather Service in State College has issued a Winter
Weather Advisory for Snow, which is in effect until 8 PM EDT this
evening. The Winter Storm Warning has been cancelled.

* HAZARDS...Snow.

* SNOW ACCUMULATIONS...Additional accumulations will only be 3
  inches or less through the rest of the day. 

* TIMING...Light constant snow will taper off to mainly flurries
  late this afternoon and early this evening.

* WIND...The northwest wind of 10 to 15 mph will gust into the 20s
  at times. 

* IMPACTS...The snow will lead to snow covered roads. Strong winds
  will create blowing snow, reduced visibility, and snow drifts.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

The Pennsylvania Department of Transportation reminds motorists
to adjust speeds based on driving conditions and to take it slow
in ice and snow.

&&

$$

PAZ018-019-025>028-034>036-056-057-059-063>066-142000-
/O.CAN.KCTP.WS.W.0003.000000T0000Z-170315T0200Z/
Northern Centre-Southern Centre-Blair-Huntingdon-Mifflin-Juniata-
Bedford-Fulton-Franklin-Perry-Dauphin-Lebanon-Cumberland-Adams-
York-Lancaster-
Including the cities of Philipsburg, State College, Altoona, 
Huntingdon, Mount Union, Lewistown, Mifflintown, Bedford, 
McConnellsburg, Chambersburg, Newport, Harrisburg, Hershey, 
Lebanon, Carlisle, Gettysburg, York, and Lancaster
256 PM EDT Tue Mar 14 2017

...WINTER STORM WARNING IS CANCELLED...

The National Weather Service in State College has cancelled the
Winter Storm Warning.

The constant light snow will taper off to mainly flurries late
this afternoon and early this evening. Additional accumulations
should be an inch or less through the end of the day.

$$

PAZ010-011-017-142000-
/O.CAN.KCTP.WW.Y.0011.000000T0000Z-170316T0000Z/
Elk-Cameron-Clearfield-
Including the cities of St. Marys, Ridgway, Emporium, DuBois, 
and Clearfield
256 PM EDT Tue Mar 14 2017

...WINTER WEATHER ADVISORY IS CANCELLED...

The National Weather Service in State College has cancelled the
Winter Weather Advisory.

The constant light snow will transition to lake effect snow
showers through the evening. Additional accumulations through 
Wednesday evening will be between 2 and 4 inches.

$$

What forecasters said that day

The local office's own words before this winter storm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS State College, PA wrote its last area forecast discussion before this winter storm warning went out at Mar 12, 3:01 PM EDT, 23 minutes earlier.

Area forecast discussion, Mar 12, 3:01 PM EDT, 23 minutes before
Area Forecast Discussion
National Weather Service State College PA
301 PM EDT Sun Mar 12 2017

.SYNOPSIS...
Unusually cold air will remain in place through Monday. A major
winter storm is expected to bring a moderate to major snowfall
for much of Central Pennsylvania Monday night through Tuesday
night. After a period of lake effect snow during mid-week and
brief high pressure at the end of the week, a very active and
unsettled pattern will begin.

&&

.NEAR TERM /UNTIL 11 PM THIS EVENING/...
Adjusted grids some for flurries across the north, and cloud
cover.

Prev...
High pressure will provide another mostly dry and cold day today
across the Commonwealth. Diminishing, cold northwest flow
across the unfrozen lakes of Huron, Michigan and Erie will still
keep a few flurries going over the Northwest Mountains with
little if any additional accumulation there.

High temps will be just a few degrees higher than Saturday.
Late morning and afternoon stratocu development from the lakes
will clear out by Sunday evening over all but the northwest

Highs will range from near 20F north to the lower to middle 30s
southeast.

&&

.SHORT TERM /11 PM THIS EVENING THROUGH 6 PM MONDAY/...
Did lower low temperatures and dewpoints tonight, as skies
clear.

Some high and mid clouds late, but did slow things down.

For Monday, not a lot of change, mainly a degree here and
there.

Earlier discussion below.

With clearing skies temps will again drop into the single digits
and teens...as 1034 MB sfc ridge axis traverses the region. The
high passes off the coast early Monday as coastal front and
secondary low pressure start to organize along the Mid atlantic
coast.

No significant changes overnight to overall thinking.
High pressure to north gives a quiet day on Monday ahead of a
significant late- winter storm (Miller-B type) system. Track
will determine where the highest totals will fall. Expect an
area of 6+ inches over the CWA with higher amounts possible
mostly likely over eastern portion of CWA. GEFS shows a fairly
robust snow across the CWA...and the latest ECMWF has increased
QPF back to previous totals across the central mountains with
0.8" water equivalent forecast from 00z Sun run...after having
previously backed off with a farther offshore track. Bottom
line...we are still 36 hours before the first flakes fall, and
the parent upper trof is now crossing the northern Rockies...so
fine tuning will be in order through Monday.

&&

.LONG TERM /MONDAY NIGHT THROUGH SATURDAY/...
*Late-winter heavy snow risk Monday night-Tuesday

Collaboration with PBZ and CLE resulted in westward expansion
of previously issued Winter Storm Watches, which now cover all
of my counties. some portions of the West Central and Northwest
Mountains may struggle to reach 8 inches in 24 hours, or 6
inches in 12, but a high end Advisory at the least appears quite
likely. With confidence approaching 50 percent for heavy snow
criteria to be met, expanded Watches in collaboration with PBZ
and CLE. The heaviest snowfall should occur between 08z Tue and
15z Tue...when 1-2" per hour rates are expected for several
hours from the pre dawn to 900 AM Tuesday. Overall amounts
expected: 6-8" west...7-9" central and 8-12" east and southeast.
As always with Miller-B systems, dry slot from parent sfc low
will need to be watched as accumulating snow could shut off
quickly from the southwest with an earlier intrusion early
Tuesday. Deformation will keep at least light snow going across
central PA into Tuesday afternoon with the potential for a few
to several more inches where that deformation establishes
itself...most likely along the Highway 11/15 corridor and points
east.

A reinforcing surge of cold air will follow behind the storm
with snow showers Wed-Thu. Temperatures well below average Wed
behind the system with a slow moderation through the extended
but still below average.

&&

.AVIATION /19Z SUNDAY THROUGH FRIDAY/...
Mid deck was here earlier, but heating of the deep cold air
has resulted in more low clouds, wind, and even some flurries.

18Z TAFS sent.

For 18Z TAFS, slowed down high and mid level clds from the
storm moving eastward from the plains.

Monday looks VFR until very late in the afternoon in the NW,
and after sunset in the SE. A widespread winter storm will then
begin. Heavy snow and LIFR cigs and visbys in +SN are expected
Mon night and Tuesday.

Outlook...

Mon Night-Tue AM...Widespread LIFR in +SN.

Tues PM...SN ending S-N in the east, but continuing in the W.
Generally improving to IFR W and MVFR E.

Wed...Mainly VFR, with residual MVFR conditions in snow
showers, especially in the west and north. Windy.

Thu...Mainly VFR, with residual MVFR conditions in snow
showers in the west and north. Winds slowly diminishing.

Fri...Mainly VFR.

&&

.CTP WATCHES/WARNINGS/ADVISORIES...
Winter Storm Warning from 8 PM Monday to 10 PM EDT Tuesday for
PAZ006-011-012-018-019-025>028-034>037-041-042-045-046-049>053-
056>059-063>066.
Winter Storm Warning from 8 PM Monday to 8 AM EDT Wednesday
for PAZ004-005-010-017-024-033.

&&

SYNOPSIS...DeVoir
NEAR TERM...Dangelo/DeVoir
SHORT TERM...DeVoir/Martin
LONG TERM...Ross/DeVoir
AVIATION...Martin
Hazardous weather outlook, Mar 12, 4:30 AM EDT, 10 hours 54 minutes before
Hazardous Weather Outlook
National Weather Service State College PA
430 AM EDT Sun Mar 12 2017

PAZ004>006-010>012-017>019-024>028-033>037-041-042-045-046-049>053-
056>059-063>066-130830-
Warren-McKean-Potter-Elk-Cameron-Northern Clinton-Clearfield-
Northern Centre-Southern Centre-Cambria-Blair-Huntingdon-Mifflin-
Juniata-Somerset-Bedford-Fulton-Franklin-Tioga-Northern Lycoming-
Sullivan-Southern Clinton-Southern Lycoming-Union-Snyder-Montour-
Northumberland-Columbia-Perry-Dauphin-Schuylkill-Lebanon-Cumberland-
Adams-York-Lancaster-
430 AM EDT Sun Mar 12 2017

...WINTER STORM WATCH IN EFFECT FROM MONDAY EVENING THROUGH TUESDAY
EVENING...

This Hazardous Weather Outlook is for central Pennsylvania.

.DAY ONE...Today and Tonight.

The probability for widespread hazardous weather is low.

.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 Storm Watch.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

The office that day

Everything else NWS State College, PA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Mar 11, 8:54 PM ESTWinter Storm WatchCTPAdams, Bedford, Blair, Cambria, Cameron, Centre and 27 more18 hr

Nearby

Winter Storm Warnings in Pennsylvania, 2017Every winter storm warning in 2017

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.