Winter Weather in Pennsylvania, November 28, 2021

Name: Winter Weather in Pennsylvania, November 28, 2021
Start: 2021-11-28T20:37
End: 2021-11-28T20:40
Location: Pennsylvania

November 28, 2021 · NWS CTP · 2 events in 2 counties and zones

A secondary cold front behind a departing Alberta Clipper produced scattered snow showers across portions of central Pennsylvania during the evening of November 28, 2021. A quick dusting of snow was enough to slicken roads in some areas, causing accidents that led to the closure of Route 322 through Seven Mountains in Centre and Mifflin counties and Route 30 over Laurel Mountain in Somerset…

Where it happened

Every event with a place to put it; 2 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.

Tornadoes
Tropical storms and surge
Floods
Wind
Hail
Winter weather
Heat and drought
Cold
Fire, smoke and dust
Marine and coastal
Other

Open the live radar over this ground

The toll

Deaths: 0
Injuries: 0
Property damage: None recorded
Crop damage: None recorded
Events: 2

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.

What happened

The episode as NWS CTP wrote it up.

What forecasters said that day

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.

In the hours before

Special weather statement, Nov 28, 7:32 PM EST, 1 hour 5 minutes before

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Special weather statement, Nov 28, 8:15 PM EST, 22 minutes before

Special Weather Statement
National Weather Service State College PA
815 PM EST Sun Nov 28 2021

PAZ026>028-050-056-290145-
Perry PA-Juniata PA-Huntingdon PA-Mifflin PA-Snyder PA-
815 PM EST Sun Nov 28 2021

...A BAND OF SNOW SHOWERS WILL AFFECT PARTS OF PERRY...JUNIATA...
HUNTINGDON...MIFFLIN...AND SNYDER COUNTIES...

HAZARDS...A band of snow showers which can rapidly reduce visibility
to less than one mile and slicken roads.

LOCATION AND MOVEMENT...At 813 PM EST, a band of snow showers was
along a line extending from Richfield to near Spruce Hill to near
Mount Union and moving east at 30 MPH.

LOCATIONS IMPACTED INCLUDE...
Lewistown, Mount Union, Burnham, Newport, Highland Park, Honey
Grove, New Bloomfield, Yeagertown, Mcalisterville, McClure, Spruce
Hill, Port Trevorton, Strodes Mills, Beaver Springs, Richfield,
Juniata Terrace, Allensville and Mexico.

SAFETY INFO...
Use extra caution if you must travel into or through this band of
heavy snow. Rapid changes in visibility and potentially slick roads
may lead to accidents.

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

&&

LAT...LON 4027 7766 4029 7767 4027 7770 4038 7795
      4059 7780 4076 7732 4074 7686 4069 7687
      4064 7694 4059 7696 4057 7699 4052 7698
      4047 7695 4035 7713 4032 7736 4024 7750
TIME...MOT...LOC 0113Z 270DEG 27KT 4069 7710 4044 7749 4034 7784

Evanego

The radar

The national radar mosaic for the moment the first event began.

Open the radar archive at this moment

Event by event

2 winter weather. Local standard time, as filed.

Winter Weather, Southern Centre

When: November 28, 8:37 PM EST
Where: Southern Centre forecast zone
Reported by: State Official
Coordinates: 40.919, -77.820 (the zone’s center; the record gives no point)

A secondary cold front produced scattered snow showers that coated the ground on Seven Mountains with around an inch of snow. Resultant slick roads caused a tractor trailer accident that closed the eastbound lanes between Mountain Back Road in Potter Township, Centre County and Stone Creek Road in Armagh Township, Mifflin County for a little under two hours during the evening of November 28, 2021.

Winter Weather, Somerset

When: November 28, 8:40 PM EST
Where: Somerset forecast zone
Reported by: State Official
Coordinates: 39.972, -79.028 (the zone’s center; the record gives no point)

A secondary cold front generated snow showers that produced 2 to 3 inches of snow on the ridges of western Somerset County. Resultant slick roads caused a tractor trailer to jackknife on Route 30 near the Somerset/Westmoreland County line and close the road between the base of the mountain in each county for a little under two hours during the evening of November 28, 2021.

What these are

Winter Weather: Snow, sleet or freezing rain below warning levels that still caused disruption, damage or casualties.

After NWS Directive 10-1605, the rules offices file Storm Data by.

The same day elsewhere

Every storm in Pennsylvania in 2021 Every state in 2021 This day in weather history Warnings in Pennsylvania, November 2021

Sources

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 2026-10-01. Each event’s entry at NCEI: 988248, 988249.