Low pressure traveled up the Ohio Valley and across Pennsylvania, bringing snow and a wintry mix to the area. Snowfall ranged from less than an inch across the southern tier of counties to as much as 8 inches in parts of the northern tier.
Every event with a place to put it; 7 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.
Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS CTP wrote it up.
Low pressure traveled up the Ohio Valley and across Pennsylvania, bringing snow and a wintry mix to the area. Snowfall ranged from less than an inch across the southern tier of counties to as much as 8 inches in parts of the northern tier. Southern counties received 0.10 to 0.40 inches of freezing rain.
The local office's own words before the first event, 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 the first event at Feb 6, 11:04 PM EST, 56 minutes earlier.
Area Forecast Discussion National Weather Service State College PA 1104 PM EST Tue Feb 6 2018 .SYNOPSIS... A winter storm will move through the region late tonight and Wednesday. After a brief visit from high pressure Thursday, several weak systems will keep us unsettled from Friday through the weekend. && .NEAR TERM /THROUGH WEDNESDAY/... No changes to current Winter Storm Warnings for heavy snow (north) and snow to ice (south), as well as the Winter Weather Advisories for up to several inches of snow, followed by a change to sleet and freezing rain for several hours Wed afternoon across much of the Central Mountains and Susquehanna River Valley. A wavy frontal system to our south will spawn a storm system over the lower Miss Valley this evening that will race NEWD overnight and Wednesday. Latest timing of precipitation via the RAP and SPC High Res Ensemble shows snow reaching my SWRN counties between 2 and 4 AM Wed, then overspreading much of the rest of the region between 4 and 7 AM. The SPC HREF shows a wedge of warm air also be moving rapidly NE promising to complicate the precip type forecast rather early in the event. It looks like by dawn Wednesday snow will have overspread most if not all of the forecast area with the warm air already having turned things over to sleet/freezing rain over my SWRN counties. Lows will drop back into the mid teens north to mid 20s south. && .SHORT TERM /WEDNESDAY NIGHT THROUGH 6 PM WEDNESDAY/... The bulk of the precip from this upcoming high impact Winter Storm will fall between about 12Z-21Z/7am- 4pm Wed. Models are in good agreement with the low moving to around JST by early afternoon before pressure falls along the coast lead to a rapid center jump to a new storm over or near the NJ coast by nightfall. The storm will then race up through the Bay of Fundy overnight. Continue to lean heavily twd the SPC HREF to time the changeover line of the precip northward into the central mountains and even through the Middle Susq Valley throughout the morning and into the afternoon. The biggest issues will likely arise with the morning commute coinciding with the period of heaviest snow over much of the region from Altoona-State College eastward. Snowfall rates during this period will likely be 1-1.5 inches per hour with vsbys averaging 1/4-1/2 mile. A changeover to sleet/freezing rain will also be advancing north so early travel will certainly be adversely impacted. As it stands now the changeover line will likely surge well into central PA to the north of RT 22 by around lunchtime, and maybe as far north as I-80 by mid afternoon. The storm will wind down rapidly during the second half of the day with the new low expected to be forming rapidly somewhere in the vicinity of Philadelphia by mid/late afternoon. Precipitation will likely just end over eastern areas and taper off to scattered snow showers over the west. Daytime highs will vary from the mid 20s over the NW to around 40 in the SE. && .LONG TERM /WEDNESDAY NIGHT THROUGH TUESDAY/... The storm winds down by Wednesday evening, and behind it a modified arctic airmass will enter the region under broad upper cyclonic flow. Below normal temperatures will return while we become vulnerable to weak shortwaves rippling through the pattern aloft into next weekend. && .AVIATION /04Z WEDNESDAY THROUGH SUNDAY/... MVFR ceilings ongoing over western and central terminals with VFR over the Susq Valley. This will persist into the overnight hours as westerly flow shifts to the S/SE ahead of an approaching winter storm. Expect snow and mixed precipitation to quickly overspread the airspace from southwest to northeast Wednesday morning (around 08z at JST / 10-12z elsewhere) with high confidence in widespread MVFR to IFR conditions quickly developing, along with LLWS as 850mb winds increase to 40-50 mph. Precipitation will start out as snow, but transition to a wintry mix/freezing rain over the south during the morning hours, while northern areas along and north of I-80 remain primarily snow. Precipitation tapers off late Wed afternoon into Wed evening, with westerly winds generating lighter snow showers/continued primarily ceiling restrictions over western/northern areas. Outlook... Wed...Widespread MVFR/IFR in snow and mixed precipitation. LLWS. Thu...Gusty winds/snow showers. MVFR west/north. VFR elsewhere. Fri...Reduced conditions and snow likely over northern 1/3. Sat-Sun...Snow/mixed precipitation likely late Saturday into Sunday. && .CTP WATCHES/WARNINGS/ADVISORIES... Winter Storm Warning from 4 AM to 10 PM EST Wednesday for PAZ004>006-010>012-037-041-042-046-051-053. Winter Weather Advisory until 7 PM EST Wednesday for PAZ017>019-024>028-045-049-050-052-056>059-063. Winter Storm Warning until 4 PM EST Wednesday for PAZ033>036. Winter Weather Advisory from 3 AM to 4 PM EST Wednesday for PAZ064>066. && SYNOPSIS...La Corte/Lambert NEAR TERM...La Corte/Lambert SHORT TERM...La Corte LONG TERM...Lambert AVIATION...RXR
Hazardous Weather Outlook National Weather Service State College PA 242 PM EST Tue Feb 6 2018 PAZ004>006-010>012-037-041-042-046-051-053-071945- Warren-McKean-Potter-Elk-Cameron-Northern Clinton-Tioga- Northern Lycoming-Sullivan-Southern Lycoming-Montour-Columbia- 242 PM EST Tue Feb 6 2018 ...WINTER STORM WARNING IN EFFECT FROM 4 AM TO 10 PM EST WEDNESDAY... This Hazardous Weather Outlook is for central Pennsylvania. .DAY ONE...This Afternoon and Tonight. Please listen to NOAA Weather Radio or go to weather.gov/StateCollege on the internet for more information about the following hazards. Winter Storm Warning. .DAYS TWO THROUGH SEVEN...Wednesday through Monday. Please listen to NOAA Weather Radio or go to weather.gov/StateCollege on the internet for more information about the following hazards. Winter Storm Warning. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. PAZ017>019-024>028-045-049-050-052-058-071945- Clearfield-Northern Centre-Southern Centre-Cambria-Blair-Huntingdon- Mifflin-Juniata-Southern Clinton-Union-Snyder-Northumberland- Schuylkill- 242 PM EST Tue Feb 6 2018 ...WINTER WEATHER ADVISORY IN EFFECT FROM 1 AM TO 7 PM EST WEDNESDAY... This Hazardous Weather Outlook is for central Pennsylvania. .DAY ONE...This Afternoon and 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. .DAYS TWO THROUGH SEVEN...Wednesday through Monday. 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. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. PAZ033>035-071945- Somerset-Bedford-Fulton- 242 PM EST Tue Feb 6 2018 ...WINTER STORM WARNING IN EFFECT FROM 1 AM TO 4 PM EST WEDNESDAY... This Hazardous Weather Outlook is for central Pennsylvania. .DAY ONE...This Afternoon and Tonight. Please listen to NOAA Weather Radio or go to weather.gov/StateCollege on the internet for more information about the following hazards. Winter Storm Warning. .DAYS TWO THROUGH SEVEN...Wednesday through Monday. Please listen to NOAA Weather Radio or go to weather.gov/StateCollege on the internet for more information about the following hazards. Winter Storm Warning. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. PAZ064>066-071945- Adams-York-Lancaster- 242 PM EST Tue Feb 6 2018 ...WINTER WEATHER ADVISORY IN EFFECT FROM 3 AM TO 4 PM EST WEDNESDAY... This Hazardous Weather Outlook is for central Pennsylvania. .DAY ONE...This Afternoon and 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. .DAYS TWO THROUGH SEVEN...Wednesday through Monday. 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. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. PAZ056-057-059-063-071945- Perry-Dauphin-Lebanon-Cumberland- 242 PM EST Tue Feb 6 2018 ...WINTER WEATHER ADVISORY IN EFFECT FROM 1 AM TO 7 PM EST WEDNESDAY... This Hazardous Weather Outlook is for central Pennsylvania. .DAY ONE...This Afternoon and 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. .DAYS TWO THROUGH SEVEN...Wednesday through Monday. 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. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. PAZ036-071945- Franklin- 242 PM EST Tue Feb 6 2018 ...WINTER STORM WARNING IN EFFECT FROM 1 AM TO 4 PM EST WEDNESDAY... This Hazardous Weather Outlook is for central Pennsylvania. .DAY ONE...This Afternoon and Tonight. Please listen to NOAA Weather Radio or go to weather.gov/StateCollege on the internet for more information about the following hazards. Winter Storm Warning. .DAYS TWO THROUGH SEVEN...Wednesday through Monday. Please listen to NOAA Weather Radio or go to weather.gov/StateCollege on the internet for more information about the following hazards. Winter Storm Warning. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time.
The national radar mosaic for the moment the first event began.
7 winter storm. Local standard time, as filed.
A winter storm produced snow, sleet and 0.25 to 0.40 inches of freezing rain across Adams County.
A winter storm produced snow, sleet and 0.25 to 0.40 inches of freezing rain across Franklin County.
A winter storm produced snow, sleet and 0.25 to 0.40 inches of freezing rain across Fulton County.
A winter storm produced snow, sleet and 0.25 to 0.40 inches of freezing rain across Bedford County.
A winter storm produced snow, sleet and 0.25 to 0.40 inches of freezing rain across Somerset County.
A Winter Storm produced 6 to 8 inches of snow across Tioga County within a 12 hour period on February 7th.
A Winter Storm produced 6 inches of snow across Potter County within a 12 hour period on February 7th.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Pennsylvania in 2018Every state in 2018This day in weather historyWarnings in Pennsylvania, February 2018
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 734635, 734636, 734637, 734638, 734639, 734632, 734633.