Alert archive / Pennsylvania / Winter Storm Watches in 2021
Winter Storm Watch 6, NWS State College, PA
NWS State College, PA issued this winter storm watch at Feb 14, 2021, 3:46 PM EST for 9 counties in Pennsylvania. It took effect at Feb 15, 2021, 4:00 PM EST. It was in force for .
The area
The counties it named.
The facts
- Issued
- Feb 14, 2021, 3:46 PM EST (20:46 UTC)
- In effect from
- Feb 15, 2021, 4:00 PM EST
- Expired
- Feb 15, 2021, 4:30 AM EST
- In force
- Issued by
- NWS State College, PA
Counties Bedford County, PA, Cumberland County, PA, Dauphin County, PA, Franklin County, PA, Fulton County, PA, Lebanon County, PA, Perry County, PA, Schuylkill County, PA, Somerset County, PA
The radar
The State College radar (KCCX), 91 km from the middle of the area, began a volume at 20:45 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.
The nearest sounding before it
Washington/Dulle, VA (KIAD), launched 12:00Z, 8.8 hours before the alert went out and 140 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.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 532 m above ground
- 0-6 km bulk shear
- 53 kt
- 0-1 km storm-relative helicity
- -37 m²/s²
- 0-3 km storm-relative helicity
- 122 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
112 WWUS41 KCTP 142046 WSWCTP URGENT - WINTER WEATHER MESSAGE National Weather Service State College PA 346 PM EST Sun Feb 14 2021 PAZ004>006-037-150900- /O.UPG.KCTP.WS.A.0005.210215T1200Z-210216T1800Z/ /O.NEW.KCTP.WS.W.0004.210215T1200Z-210216T1800Z/ Warren-McKean-Potter-Tioga- Including the cities of Warren, Bradford, Coudersport, Mansfield, and Wellsboro 346 PM EST Sun Feb 14 2021 ...WINTER STORM WARNING IN EFFECT FROM 7 AM MONDAY TO 1 PM EST TUESDAY... * WHAT...Heavy snow expected. Total snow accumulations of 6 to 9 inches. * WHERE...Warren, McKean, Potter, and Tioga Counties. * WHEN...From 7 AM Monday to 1 PM EST Tuesday. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the morning or evening commute. * ADDITIONAL DETAILS...A period of light snow is anticipated during the morning and early afternoon Monday, with steadier, heavier snow expected Monday night. PRECAUTIONARY/PREPAREDNESS ACTIONS... The Pennsylvania Department of Transportation and Pennsylvania Turnpike Commission strongly encourage motorists to heed all travel restrictions and delay unnecessary travel as significant winter weather conditions will make travel very hazardous. Call 5 1 1 or visit www.511pa.com for the latest travel, roadway and traffic conditions. To report snow or ice, post to the NWS State College Facebook page, use Twitter @NWSStateCollege, or visit weather.gov/ctp. && $$ PAZ010>012-017>019-041-042-045-046-150900- /O.UPG.KCTP.WS.A.0005.210215T1200Z-210216T1800Z/ /O.NEW.KCTP.WW.Y.0014.210215T1200Z-210216T1800Z/ Elk-Cameron-Northern Clinton-Clearfield-Northern Centre- Southern Centre-Northern Lycoming-Sullivan-Southern Clinton- Southern Lycoming- Including the cities of St. Marys, Ridgway, Emporium, Renovo, DuBois, Clearfield, Philipsburg, State College, Trout Run, Laporte, Lock Haven, and Williamsport 346 PM EST Sun Feb 14 2021 ...WINTER WEATHER ADVISORY IN EFFECT FROM 7 AM MONDAY TO 1 PM EST TUESDAY... * WHAT...Mixed precipitation expected. Total snow accumulations of 4 to 7 inches and ice accumulations of a light glaze. * WHERE...Portions of central Pennsylvania. * WHEN...From 7 AM Monday to 1 PM EST Tuesday. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the morning or evening commute. * ADDITIONAL DETAILS...Mainly snow is expected Monday and early Monday evening, with a mixture of snow, sleet, and freezing rain late Monday night. PRECAUTIONARY/PREPAREDNESS ACTIONS... The Pennsylvania Department of Transportation and Pennsylvania Turnpike Commission remind motorists to adjust speeds based on driving conditions as winter weather impacts Pennsylvania roadways. Call 5 1 1 or visit www.511pa.com for the latest travel, roadway and traffic conditions. To report snow or ice, post to the NWS State College Facebook page, use Twitter @NWSStateCollege, or visit weather.gov/ctp. && $$ PAZ024>028-049>053-150900- /O.NEW.KCTP.WW.Y.0014.210215T1200Z-210216T1800Z/ Cambria-Blair-Huntingdon-Mifflin-Juniata-Union-Snyder-Montour- Northumberland-Columbia- Including the cities of Johnstown, Altoona, Huntingdon, Mount Union, Lewistown, Mifflintown, Lewisburg, Selinsgrove, Danville, Sunbury, Shamokin, Bloomsburg, and Berwick 346 PM EST Sun Feb 14 2021 ...WINTER WEATHER ADVISORY IN EFFECT FROM 7 AM MONDAY TO 1 PM EST TUESDAY... * WHAT...Mixed precipitation expected. Total snow accumulations of 2 to 4 inches and ice accumulations of up to one tenth of an inch. * WHERE...Portions of central Pennsylvania. * WHEN...From 7 AM Monday to 1 PM EST Tuesday. * IMPACTS...Plan on slippery road conditions. The hazardous conditions could impact the morning or evening commute. * ADDITIONAL DETAILS...Mainly snow is expected on Monday into early Monday evening, with a mixture of sleet and freezing rain for most of Monday night. PRECAUTIONARY/PREPAREDNESS ACTIONS... The Pennsylvania Department of Transportation and Pennsylvania Turnpike Commission remind motorists to adjust speeds based on driving conditions as winter weather impacts Pennsylvania roadways. Call 5 1 1 or visit www.511pa.com for the latest travel, roadway and traffic conditions. To report snow or ice, post to the NWS State College Facebook page, use Twitter @NWSStateCollege, or visit weather.gov/ctp. && $$ PAZ064>066-150900- /O.NEW.KCTP.WW.Y.0014.210215T2100Z-210216T1800Z/ Adams-York-Lancaster- Including the cities of Gettysburg, York, and Lancaster 346 PM EST Sun Feb 14 2021 ...WINTER WEATHER ADVISORY IN EFFECT FROM 4 PM MONDAY TO 1 PM EST TUESDAY... * WHAT...Mixed precipitation expected. Total snow accumulations of up to one inch and ice accumulations of one tenth to two tenths of an inch. * WHERE...Adams, York, and Lancaster Counties. * WHEN...From 4 PM Monday to 1 PM EST Tuesday. * IMPACTS...Plan on slippery road conditions. The hazardous conditions could impact the morning or evening commute. * ADDITIONAL DETAILS...A mixture of snow, sleet, and freezing rain will develop late in the day Monday. Mixed sleet and freezing rain Monday night, may even change over to plain rain for a time during the pre-dawn hours. PRECAUTIONARY/PREPAREDNESS ACTIONS... The Pennsylvania Department of Transportation and Pennsylvania Turnpike Commission remind motorists to adjust speeds based on driving conditions as winter weather impacts Pennsylvania roadways. Call 5 1 1 or visit www.511pa.com for the latest travel, roadway and traffic conditions. To report snow or ice, post to the NWS State College Facebook page, use Twitter @NWSStateCollege, or visit weather.gov/ctp. && $$ PAZ033>036-056>059-063-150900- /O.NEW.KCTP.WS.A.0006.210215T2100Z-210216T1800Z/ Somerset-Bedford-Fulton-Franklin-Perry-Dauphin-Schuylkill-Lebanon- Cumberland- Including the cities of Somerset, Bedford, McConnellsburg, Chambersburg, Newport, Harrisburg, Hershey, Pottsville, Lebanon, and Carlisle 346 PM EST Sun Feb 14 2021 ...WINTER STORM WATCH IN EFFECT FROM MONDAY AFTERNOON THROUGH TUESDAY AFTERNOON... * WHAT...Heavy mixed precipitation possible. Total snow accumulations of up to two inches and ice accumulations of one tenth to two tenths of an inch, with locally greater than a quarter of an inch, mainly over the higher terrain. * WHERE...Portions of central Pennsylvania. * WHEN...From Monday afternoon through Tuesday afternoon. * IMPACTS...Plan on slippery road conditions. The hazardous conditions could impact the morning or evening commute. * ADDITIONAL DETAILS...The best potential for sustained freezing rain is Monday night. PRECAUTIONARY/PREPAREDNESS ACTIONS... There is the potential for significant winter weather that may impact travel. Review winter weather safety and preparedness information at weather.gov/winter. The latest forecast information can be found on the NWS State College Facebook page and Twitter @NWSStateCollege, or on the web at weather.gov/ctp. && $$ Jurewicz/Wagner
2 follow-up statements
970 WWUS41 KCTP 150302 WSWCTP URGENT - WINTER WEATHER MESSAGE National Weather Service State College PA 1002 PM EST Sun Feb 14 2021 PAZ004>006-037-151600- /O.CON.KCTP.WS.W.0004.210215T1200Z-210216T1800Z/ Warren-McKean-Potter-Tioga- Including the cities of Warren, Bradford, Coudersport, Mansfield, and Wellsboro 1002 PM EST Sun Feb 14 2021 ...WINTER STORM WARNING REMAINS IN EFFECT FROM 7 AM MONDAY TO 1 PM EST TUESDAY... * WHAT...Heavy snow expected, possibly mixing with some sleet late Monday night. Total snow accumulations of 6 to 9 inches. * WHERE...Warren, McKean, Potter, and Tioga Counties. * WHEN...From 7 AM Monday to 1 PM EST Tuesday. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the morning or evening commute. * ADDITIONAL DETAILS...A period of light snow is anticipated during the morning and early afternoon Monday, with steadier, heavier snow expected Monday night. Sleet could mix in at times late Monday night which could reduce the storm total snowfall by around 2 inches. PRECAUTIONARY/PREPAREDNESS ACTIONS... The Pennsylvania Department of Transportation and Pennsylvania Turnpike Commission strongly encourage motorists to heed all travel restrictions and delay unnecessary travel as significant winter weather conditions will make travel very hazardous. Call 5 1 1 or visit www.511pa.com for the latest travel, roadway and traffic conditions. To report snow or ice, post to the NWS State College Facebook page, use Twitter @NWSStateCollege, or visit weather.gov/ctp. && $$ PAZ010>012-017>019-024>028-041-042-045-046-049>053-151600- /O.CON.KCTP.WW.Y.0014.210215T1200Z-210216T1800Z/ Elk-Cameron-Northern Clinton-Clearfield-Northern Centre- Southern Centre-Cambria-Blair-Huntingdon-Mifflin-Juniata- Northern Lycoming-Sullivan-Southern Clinton-Southern Lycoming- Union-Snyder-Montour-Northumberland-Columbia- Including the cities of St. Marys, Ridgway, Emporium, Renovo, DuBois, Clearfield, Philipsburg, State College, Johnstown, Altoona, Huntingdon, Mount Union, Lewistown, Mifflintown, Trout Run, Laporte, Lock Haven, Williamsport, Lewisburg, Selinsgrove, Danville, Sunbury, Shamokin, Bloomsburg, and Berwick 1002 PM EST Sun Feb 14 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 7 AM MONDAY TO 1 PM EST TUESDAY... * WHAT...Snow then mixed precipitation expected. Total snow accumulations of 2 to 5 inches and ice accumulations of up to one tenth of an inch. Locally around 6 inches of snow is possible near and to the north of Interstate 80. * WHERE...Portions of central Pennsylvania. * WHEN...From 7 AM Monday to 1 PM EST Tuesday. * IMPACTS...Plan on slippery road conditions. The hazardous conditions could impact the morning or evening commute. * ADDITIONAL DETAILS...Mainly snow is expected on Monday into Monday evening, with a mixture of sleet and freezing rain for the latter half of Monday night. A 2 to 3 hour period of heavy snow, with rates of 1 to 2 inches per hour, is possible Monday evening when the bulk of the snow is expected. PRECAUTIONARY/PREPAREDNESS ACTIONS... The Pennsylvania Department of Transportation and Pennsylvania Turnpike Commission remind motorists to adjust speeds based on driving conditions as winter weather impacts Pennsylvania roadways. Call 5 1 1 or visit www.511pa.com for the latest travel, roadway and traffic conditions. To report snow or ice, post to the NWS State College Facebook page, use Twitter @NWSStateCollege, or visit weather.gov/ctp. && $$ PAZ064>066-151600- /O.CON.KCTP.WW.Y.0014.210215T2100Z-210216T1800Z/ Adams-York-Lancaster- Including the cities of Gettysburg, York, and Lancaster 1002 PM EST Sun Feb 14 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 4 PM MONDAY TO 1 PM EST TUESDAY... * WHAT...Mixed precipitation expected. Total snow accumulations of up to one inch and ice accumulations of one tenth to two tenths of an inch. * WHERE...Adams, York, and Lancaster Counties. * WHEN...From 4 PM Monday to 1 PM EST Tuesday. * IMPACTS...Plan on slippery road conditions. The hazardous conditions could impact the morning or evening commute. * ADDITIONAL DETAILS...A mixture of snow, sleet, and freezing rain will develop late in the day Monday. Mixed sleet and freezing rain Monday night will fall heavy at times, and may even change over to plain rain for a time during the pre-dawn hours with temperatures steady or slowly rising to 32 or 33 degrees. PRECAUTIONARY/PREPAREDNESS ACTIONS... The Pennsylvania Department of Transportation and Pennsylvania Turnpike Commission remind motorists to adjust speeds based on driving conditions as winter weather impacts Pennsylvania roadways. Call 5 1 1 or visit www.511pa.com for the latest travel, roadway and traffic conditions. To report snow or ice, post to the NWS State College Facebook page, use Twitter @NWSStateCollege, or visit weather.gov/ctp. && $$ PAZ033>036-056>059-063-151600- /O.CON.KCTP.WS.A.0006.210215T2100Z-210216T1800Z/ Somerset-Bedford-Fulton-Franklin-Perry-Dauphin-Schuylkill-Lebanon- Cumberland- Including the cities of Somerset, Bedford, McConnellsburg, Chambersburg, Newport, Harrisburg, Hershey, Pottsville, Lebanon, and Carlisle 1002 PM EST Sun Feb 14 2021 ...WINTER STORM WATCH REMAINS IN EFFECT FROM MONDAY AFTERNOON THROUGH TUESDAY AFTERNOON... * WHAT...Heavy mixed precipitation possible. Total snow accumulations of up to two inches and ice accumulations of one tenth to two tenths of an inch, with locally greater than a quarter of an inch, mainly on the ridge tops. * WHERE...Portions of central Pennsylvania. * WHEN...From Monday afternoon through Tuesday afternoon. * IMPACTS...Plan on slippery road conditions. The hazardous conditions could impact the morning or evening commute. * ADDITIONAL DETAILS...The best potential for sustained, heavier freezing rain is Monday night. PRECAUTIONARY/PREPAREDNESS ACTIONS... There is the potential for significant winter weather that may impact travel. Review winter weather safety and preparedness information at weather.gov/winter. The latest forecast information can be found on the NWS State College Facebook page and Twitter @NWSStateCollege, or on the web at weather.gov/ctp. && $$ Lambert
007 WWUS41 KCTP 150930 WSWCTP URGENT - WINTER WEATHER MESSAGE National Weather Service State College PA 430 AM EST Mon Feb 15 2021 PAZ010-011-160000- /O.UPG.KCTP.WW.Y.0014.210215T1200Z-210216T1800Z/ /O.EXA.KCTP.WS.W.0004.210215T1200Z-210216T1800Z/ Elk-Cameron- Including the cities of St. Marys, Ridgway, and Emporium 430 AM EST Mon Feb 15 2021 ...WINTER STORM WARNING IN EFFECT FROM 7 AM THIS MORNING TO 1 PM EST TUESDAY... * WHAT...Heavy mixed precipitation expected. Total snow accumulations of 5 to 7 inches and ice accumulations of less than one tenth of an inch. * WHERE...Elk and Cameron Counties. * WHEN...From 7 AM this morning to 1 PM EST Tuesday. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact parts of the Monday evening and Tuesday morning commute. * ADDITIONAL DETAILS...An initial period of snow will start this morning and taper off this afternoon. Another period of snow is expected this evening and early tonight and may be heavy at times with rates greater than 1 inch per hour possible before changing to a wintry mix into early Tuesday morning. PRECAUTIONARY/PREPAREDNESS ACTIONS... The Pennsylvania Department of Transportation and Pennsylvania Turnpike Commission strongly encourage motorists to heed all travel restrictions and delay unnecessary travel as significant winter weather conditions will make travel very hazardous. Call 5 1 1 or visit www.511pa.com for the latest travel, roadway and traffic conditions. To report snow or ice, post to the NWS State College Facebook page, use Twitter @NWSStateCollege, or visit weather.gov/ctp. && $$ PAZ004>006-037-160000- /O.CON.KCTP.WS.W.0004.210215T1200Z-210216T1800Z/ Warren-McKean-Potter-Tioga- Including the cities of Warren, Bradford, Coudersport, Mansfield, and Wellsboro 430 AM EST Mon Feb 15 2021 ...WINTER STORM WARNING REMAINS IN EFFECT FROM 7 AM THIS MORNING TO 1 PM EST TUESDAY... * WHAT...Heavy snow expected. Total snow accumulations of 6 to 8 inches. * WHERE...McKean, Tioga, Warren and Potter Counties. * WHEN...From 7 AM this morning to 1 PM EST Tuesday. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact parts of the Monday evening and Tuesday morning commute. * ADDITIONAL DETAILS...An initial period of snow will start this morning and taper off this afternoon. Another period of snow is expected this evening and early tonight and may be heavy at times with rates greater than 1 inch per hour possible. Snow may change to a wintry mix into early Tuesday morning with a light glaze of ice possible mainly to the south of Route 6. PRECAUTIONARY/PREPAREDNESS ACTIONS... The Pennsylvania Department of Transportation and Pennsylvania Turnpike Commission strongly encourage motorists to heed all travel restrictions and delay unnecessary travel as significant winter weather conditions will make travel very hazardous. Call 5 1 1 or visit www.511pa.com for the latest travel, roadway and traffic conditions. To report snow or ice, post to the NWS State College Facebook page, use Twitter @NWSStateCollege, or visit weather.gov/ctp. && $$ PAZ033>036-056>059-063-160000- /O.UPG.KCTP.WS.A.0006.210215T2100Z-210216T1800Z/ /O.EXA.KCTP.WW.Y.0014.210215T1200Z-210216T1800Z/ Somerset-Bedford-Fulton-Franklin-Perry-Dauphin-Schuylkill-Lebanon- Cumberland- Including the cities of Somerset, Bedford, McConnellsburg, Chambersburg, Newport, Harrisburg, Hershey, Pottsville, Lebanon, and Carlisle 430 AM EST Mon Feb 15 2021 ...WINTER WEATHER ADVISORY IN EFFECT FROM 7 AM THIS MORNING TO 1 PM EST TUESDAY... * WHAT...Mixed precipitation expected. Total snow and sleet accumulations of up to one inch and ice accumulations of one tenth to two tenths of an inch. * WHERE...Portions of south central Pennsylvania. * WHEN...From 7 AM this morning to 1 PM EST Tuesday. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact parts of the Monday evening and Tuesday morning commute. * ADDITIONAL DETAILS...Occasional light sleet or freezing rain is expected today. The heaviest ice is expected later this evening through tonight. Precipitation may change to rain southeast of I-81 and I-78 early Tuesday morning. PRECAUTIONARY/PREPAREDNESS ACTIONS... The Pennsylvania Department of Transportation and Pennsylvania Turnpike Commission remind motorists to adjust speeds based on driving conditions as winter weather impacts Pennsylvania roadways. Call 5 1 1 or visit www.511pa.com for the latest travel, roadway and traffic conditions. To report snow or ice, post to the NWS State College Facebook page, use Twitter @NWSStateCollege, or visit weather.gov/ctp. && $$ PAZ064>066-160000- /O.EXT.KCTP.WW.Y.0014.210215T1200Z-210216T1800Z/ Adams-York-Lancaster- Including the cities of Gettysburg, York, and Lancaster 430 AM EST Mon Feb 15 2021 ...WINTER WEATHER ADVISORY NOW IN EFFECT FROM 7 AM THIS MORNING TO 1 PM EST TUESDAY... * WHAT...Mixed precipitation expected. Total sleet accumulations of less than one-half inch and ice accumulations of up to two tenths of an inch. * WHERE...Lancaster, York and Adams Counties. * WHEN...From 7 AM this morning to 1 PM EST Tuesday. * IMPACTS...Plan on slippery road conditions. The hazardous conditions could impact parts of the Monday evening and Tuesday morning commute. * ADDITIONAL DETAILS...Occasional light sleet or freezing rain is expected today. The heaviest ice is expected later this evening through tonight. Precipitation may change to rain early Tuesday morning. PRECAUTIONARY/PREPAREDNESS ACTIONS... The Pennsylvania Department of Transportation and Pennsylvania Turnpike Commission remind motorists to adjust speeds based on driving conditions as winter weather impacts Pennsylvania roadways. Call 5 1 1 or visit www.511pa.com for the latest travel, roadway and traffic conditions. To report snow or ice, post to the NWS State College Facebook page, use Twitter @NWSStateCollege, or visit weather.gov/ctp. && $$ PAZ012-017>019-041-042-045-046-160000- /O.CON.KCTP.WW.Y.0014.210215T1200Z-210216T1800Z/ Northern Clinton-Clearfield-Northern Centre-Southern Centre- Northern Lycoming-Sullivan-Southern Clinton-Southern Lycoming- Including the cities of Renovo, DuBois, Clearfield, Philipsburg, State College, Trout Run, Laporte, Lock Haven, and Williamsport 430 AM EST Mon Feb 15 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 7 AM THIS MORNING TO 1 PM EST TUESDAY... * WHAT...Mixed precipitation expected. Total snow and sleet accumulations of 2 to 5 inches and ice accumulations of up to one tenth of an inch. * WHERE...Portions of central Pennsylvania. * WHEN...From 7 AM this morning to 1 PM EST Tuesday. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact parts of the Monday evening and Tuesday morning commute. * ADDITIONAL DETAILS....A period of snow will start around mid to late morning and taper off this afternoon. Moderate sleet and freezing rain are expected tonight into early Tuesday morning. PRECAUTIONARY/PREPAREDNESS ACTIONS... The Pennsylvania Department of Transportation and Pennsylvania Turnpike Commission remind motorists to adjust speeds based on driving conditions as winter weather impacts Pennsylvania roadways. Call 5 1 1 or visit www.511pa.com for the latest travel, roadway and traffic conditions. To report snow or ice, post to the NWS State College Facebook page, use Twitter @NWSStateCollege, or visit weather.gov/ctp. && $$ PAZ024>028-049>053-160000- /O.CON.KCTP.WW.Y.0014.210215T1200Z-210216T1800Z/ Cambria-Blair-Huntingdon-Mifflin-Juniata-Union-Snyder-Montour- Northumberland-Columbia- Including the cities of Johnstown, Altoona, Huntingdon, Mount Union, Lewistown, Mifflintown, Lewisburg, Selinsgrove, Danville, Sunbury, Shamokin, Bloomsburg, and Berwick 430 AM EST Mon Feb 15 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 7 AM THIS MORNING TO 1 PM EST TUESDAY... * WHAT...Mixed precipitation expected. Total snow and sleet accumulations of up to two inches and ice accumulations of one tenth to two tenths of an inch. * WHERE...Portions of central Pennsylvania. * WHEN...From 7 AM this morning to 1 PM EST Tuesday. * IMPACTS...Plan on slippery road conditions. The hazardous conditions could impact parts of the Monday evening and Tuesday morning commute. * ADDITIONAL DETAILS...A period of snow this morning will taper off this afternoon. Moderate sleet and freezing rain are expected tonight into early Tuesday morning. PRECAUTIONARY/PREPAREDNESS ACTIONS... The Pennsylvania Department of Transportation and Pennsylvania Turnpike Commission remind motorists to adjust speeds based on driving conditions as winter weather impacts Pennsylvania roadways. Call 5 1 1 or visit www.511pa.com for the latest travel, roadway and traffic conditions. To report snow or ice, post to the NWS State College Facebook page, use Twitter @NWSStateCollege, or visit weather.gov/ctp. && $$ MS/MC
What forecasters said that day
The local office's own words before this winter storm watch 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 watch went out at Feb 14, 3:06 PM EST, 40 minutes earlier.
Area forecast discussion, Feb 14, 3:06 PM EST, 40 minutes before
Area Forecast Discussion National Weather Service State College PA 306 PM EST Sun Feb 14 2021 .SYNOPSIS... Winter storms will impact Central Pennsylvania and bring snow and mixed precipitation Monday into Tuesday and Thursday into Friday. Temperatures are forecast to remain below average into the second half of February. && .NEAR TERM /UNTIL 6 AM MONDAY MORNING/... Some brightening of the sky locally as the clouds are getting very thin over much of the CWA this aftn. Some further clearing is possible into the evening. However, low clouds return and also develop overhead overnight. Complexity with tonight's forecast is just how thick the lower clouds get. If they get thick enough over the central mtns, it might become like last night with FZDZ developing in the upslope flow just a few kft up. The higher/mid clouds don't arrive until late tonight for the west and south. So, if anything falls from the clouds early tonight, it would probably be FZDZ. CAD situation is developing with the N/NE flow at the sfc keeping the cold air in place. Temps might not drop past 30 in MDT, but should be in the teens across the north. Without much confidence in amount/coverage/duration of any FZDZ overnight, we'll opt to just call it patchy at this time. If the evening shift gets more certain of any accretions, they may follow with a very short-term advy. Snow will arrive in the wee hours over the wrn mtns. This timing has been the expectation for a few model cycles, now. By morning rush, the accums wouldn't be a half of an inch. && .SHORT TERM /6 AM MONDAY MORNING THROUGH TUESDAY/... 3 pm update... Overall, a northwestward shift in the cyclone track for the early week winter storm has continued with today's model runs. The consequences for this across Central PA are somewhat less snowfall, but a higher freezing rain risk for areas near and just south of I-78 and US-22. A shot of mostly light snow still looks to move across the Commonwealth Monday morning to early afternoon, but with the bulk of the steadier/heavier precipitation holding off until later in the day and at night. Strong low to mid-level jets will bring in much deeper moisture tomorrow night, along with significant warming above the boundary layer. Closer to the PA/NY border, thermal profiles still support mostly snow, with perhaps a brief wintry mix in the pre-dawn early Tuesday. Thus, we felt comfortable with a Winter Storm Warning for the northern tier, with generally 6-9" of snow foreseen. Farther south, initial snow will go over to a wintry mix of sleet and freezing rain, with a likely change over to rain for a time in the Lower Susquehanna Valley. The primary uncertainties involve sleet vs. freezing rain and how much ice accretion can thus take place over some of our southern counties. At this time, we felt the course of least regret was to issue a Winter Storm Watch for the potential for localized ice accretions GTE 0.25" from the Laurel Highlands, northeast to just north of Harrisburg, then over towards the southern Poconos (Lebanon and Schuylkill counties). A strong ageostrophic northerly flow and fairly cold air perched just to our north and northeast will make it difficult for surface readings to go above freezing in some locales across the Watch area. For all unmentioned locations, a Winter Weather Advisory seems in order, for a general 2-6" of snow, along with a sleet/freezing rain mix for a time Monday night. Steadier precipitation should begin to wind down from southwest to northeast, as a mid-level dry slot rotates overhead towards daybreak Tuesday. && .LONG TERM /TUESDAY NIGHT THROUGH SATURDAY/... A brief period of fair and seasonable weather for Wednesday as upper level ridging builds into the region. A shortwave trough digging across the Central US late Wednesday will spread precipitation over most of eastern US. As this trough lifts up through the Ohio River Valley, Central Pa will likely see some type of wintry precipitation. There is significant uncertainty in precip types and transitions with this system. Cold air will be in place from an Arctic High set up behind the Mon/Tues system, and model soundings have this next system starting as snow Thursday morning for the entire CWA. A strong southerly 850mb jet (50-60kt) moves overhead Thursday afternoon/evening bringing lots of warmth and moisture with it. Plus, the 12Z GFS has surface temps in the mid to upper 30s, and even in the 40s Thursday night, supporting rain as the most likely precip type. However, the Euro is colder and keeps the low more towards the coast where we might see a mixed precip scenario. Regardless, it will certainly be juicy. PWATs in the SE zones are over 1" late Thursday night, and the WPC Day 5 QPF is over 1.5" for the same location. Heavy rain may be a concern for our far SE counties Thursday night so we will be watching this closely. Due to uncertainty in the track of the low, I have some sort of mixed precip extending over the entire CWA Thursday evening. The Northern Tier counties may stay snow throughout the entire event, but for now the model trend is warmer. As cold air wraps in behind the low Friday morning the mixed precip could change back to snow for areas north and west of the Allegheny Front, but surface temps will most likely be too warm in the SE for that same change over. As for amounts, it is still too early for exact numbers. Guidance is hinting that the Central Mountains (even State College) might be a hot spot for heavier snow, but I am skeptical due to the warmth and likelihood of mixed precip knocking down totals. Ice may be an issue in the SW where the cold air remains through Thursday night, but again there is a lot of uncertainty. After the low moves off the the north and east, a cold front will sweep through Friday morning. A tightening pressure gradient will allow the winds to pick up, thus I bumped up winds Friday evening into Saturday. If there is fresh snow coupled with the gusty winds, wind chills may be in the single digits and below zero. Definitely something to watch as we approach next weekend. && .AVIATION /20Z SUNDAY THROUGH FRIDAY/... Lower clouds are thinning, but more high clouds coming back in from the south. Only JST is left in IFR. The MVFR deck will continue to break up through the evening and early night. However, a surge of llvl mstr comes up from the S after 06Z, reaching I-80 by 09Z as a squeeze play happens over the western mountains. The first (light) shot at snow will come to the W by 09Z and the central terminals before 12Z. This will still drag conditions down to LIFR at many places. The SErn terminals (MDT and LNS) will be affected the least by precip on Monday, but could still have an IFR cig. Widespread IFR will last for most of Monday, but there could be a lull of several hours before the heavier precip arrives for Mon night and Tues. Outlook... Mon night-Tue morning...LIFR in snow/mixed precip. Sig icing possible anywhere S of I-80. Tues PM-Wed...IFR mainly NW, then improving to VFR/MVFR briefly. Thu-Fri...Restrictions likely. Wintry mix, may change to rain SE. && .CTP WATCHES/WARNINGS/ADVISORIES... Winter Storm Watch from Monday morning through Tuesday afternoon for PAZ004>006-010>012-017>019-037-041-042-045-046. && SYNOPSIS...Dangelo NEAR TERM...Dangelo SHORT TERM...Jurewicz/Steinbugl LONG TERM...Wagner AVIATION...Dangelo
Hazardous weather outlook, Feb 14, 8:17 AM EST, 7 hours 29 minutes before
Hazardous Weather Outlook National Weather Service State College PA 817 AM EST Sun Feb 14 2021 PAZ024>028-033>036-049>053-056>059-063>066-151330- Cambria-Blair-Huntingdon-Mifflin-Juniata-Somerset-Bedford-Fulton- Franklin-Union-Snyder-Montour-Northumberland-Columbia-Perry-Dauphin- Schuylkill-Lebanon-Cumberland-Adams-York-Lancaster- 817 AM EST Sun Feb 14 2021 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. A wintry mix will result in travel disruptions Monday into early Tuesday. Another winter storm could bring additional snow and ice accumulation Thursday into Friday. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected today or tonight. PAZ004>006-010>012-017>019-037-041-042-045-046-151330- Warren-McKean-Potter-Elk-Cameron-Northern Clinton-Clearfield- Northern Centre-Southern Centre-Tioga-Northern Lycoming-Sullivan- Southern Clinton-Southern Lycoming- 817 AM EST Sun Feb 14 2021 ...WINTER STORM WATCH IN EFFECT FROM MONDAY MORNING THROUGH TUESDAY AFTERNOON... 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. Another winter storm could bring additional snow and ice accumulation Thursday into Friday. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected today or tonight.
The office that day
Everything else NWS State College, PA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 14, 3:46 PM EST | Winter Storm Warning | CTP | Cameron, Centre, Clearfield, Clinton, Elk, Lycoming and 5 more | 38 hr |
| Feb 14, 3:46 PM EST | Winter Weather Advisory | CTP | Adams, Bedford, Blair, Cambria, Cameron, Centre and 23 more | 38 hr |
Nearby
Winter Storm Watches in Pennsylvania, 2021Every winter storm watch in 2021
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.