Alert archive / Pennsylvania / Lake Effect Snow Warnings in 2021

Lake Effect Snow Warning 2, NWS Cleveland, OH

January 19, 2021Erie County, Pennsylvania

NWS Cleveland, OH issued this lake effect snow warning at Jan 19, 2021, 2:28 PM EST for Erie County, Pennsylvania. It took effect at Jan 19, 2021, 4:00 PM EST. It was in force for 16 hr. 11 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
Jan 19, 2021, 2:28 PM EST (19:28 UTC)
In effect from
Jan 19, 2021, 4:00 PM EST
Expired
Jan 20, 2021, 7:39 AM EST
In force
16 hr
Issued by
NWS Cleveland, OH

County Erie County, PA

The radar

The Buffalo radar (KBUF), 145 km from the middle of the area, began a volume at 19:31 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
Jan 20, 4:30 AM ESTSNOW 51 Nnw Girard, PA12-HOUR SNOWFALL.
Jan 20, 5:07 AM ESTSNOW 42 Nw Edinboro, PA24-HOUR SNOWFALL.
Jan 20, 5:38 AM ESTSNOW 6Mckean, PA12-HOUR SNOWFALL.
Jan 20, 6:00 AM ESTSNOW 4.26 Sw Erie, PA24-HOUR SNOWFALL.
Jan 20, 6:02 AM ESTSNOW 64 Se Harborcreek, PA12-HOUR SNOWFALL.
Jan 20, 6:45 AM ESTSNOW 51 Nw Harborcreek, PA12-HOUR SNOWFALL.
Jan 20, 7:00 AM ESTSNOW 4.1Erie Intl Airport, PA12-HOUR SNOWFALL.
Jan 20, 7:00 AM ESTSNOW 4.32 Wsw Erie, PA12-HOUR SNOWFALL.
Jan 20, 7:06 AM ESTSNOW 51 W Mckean, PA12-HOUR SNOWFALL.
Jan 20, 7:20 AM ESTSNOW 6.33 Ene Mckean, PA12-HOUR SNOWFALL.
Jan 20, 7:26 AM ESTSNOW 5.82 Ese North East, PA12-HOUR SNOWFALL.

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

The nearest sounding before it

Buffalo Intl Airport, NY (KBUF), launched 12:00Z, 7.5 hours before the alert went out and 146 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, Buffalo Intl Airport, NY at 12:00Z on 2021-01-19Temperature 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°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Buffalo Intl Airport, NY at 12:00Z on 2021-01-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 64 square meters per square second.19395878Sfc1 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
893 m above ground
0-6 km bulk shear
24 kt
0-1 km storm-relative helicity
64 m²/s²
0-3 km storm-relative helicity
93 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

776 
WWUS41 KCLE 191928
WSWCLE

URGENT - WINTER WEATHER MESSAGE
National Weather Service Cleveland OH
228 PM EST Tue Jan 19 2021

...Lake Effect Snow Expected Tonight...

.Lake effect snow will begin falling this evening across northeast
Erie County, PA. This lake effect snow will overspread northeast 
Ohio and northwest Pennsylvania through the overnight hours
tonight, mainly for the primary snowbelt. Two to five inches are 
expected in the advisory area with up to 9 inches in Erie County, 
mainly south of I-90. Snowfall rates of up to an inch per hour and
visibilities reduced to a quarter mile are possible in the 
heaviest snow showers.

PAZ002-200330-
/O.UPG.KCLE.WW.Y.0003.210120T0000Z-210120T1800Z/
/O.NEW.KCLE.LE.W.0002.210119T2100Z-210120T2100Z/
Southern Erie-
Including the cities of Edinboro, Corry, and Union City
228 PM EST Tue Jan 19 2021

...LAKE EFFECT SNOW WARNING IN EFFECT UNTIL 4 PM EST WEDNESDAY...

* WHAT...Heavy lake effect snow expected. Total snow 
  accumulations of 5 to 9 inches.

* WHERE...Southern Erie county.

* WHEN...Until 4 PM EST Wednesday.

* IMPACTS...Travel could be very difficult. The hazardous 
  conditions could impact the morning or evening commute.

* ADDITIONAL DETAILS...Lake effect snow will begin across the
  northeast part of the county this evening, becoming more
  widespread late tonight. The heaviest snow is expected to occur
  between 9 PM and 3 AM. Snowfall rates of up to an inch per hour
  and visibilities reduced to a quarter mile are possible in the
  heaviest snow showers. Snow showers will diminish during the 
  day Wednesday.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

The Pennsylvania Department of Transportation and Pennsylvania
Turnpike Commission strongly encourage motorists to heed all
travel restrictions and delay unnecessary travel. Visit
www.511pa.com for the latest travel, roadway, and traffic
conditions.

&&

Experimental content below...do not use operationally
Please see below links for more information on this experiment
http://www.weather.gov/buf/polygon_pdd
http://www.nws.noaa.gov/os/notification/
pns15lake_effect_snowaaa.htm
To view the experimental polygons please see:
http://www.weather.gov/buf/lespolygon
COORD...4212 7978 4227 7975 4215 8013 4209 8022 
        4200 8020 4195 8009 4196 7989 4198 7989 4200 7962 
        4206 7976 
TIME Y21M01D18T1500Z-Y21M01D19T0600Z

$$

PAZ003-200330-
/O.EXB.KCLE.WW.Y.0003.210119T2100Z-210120T2100Z/
Crawford-
Including the cities of Meadville and Titusville
228 PM EST Tue Jan 19 2021

...WINTER WEATHER ADVISORY IN EFFECT UNTIL 4 PM EST WEDNESDAY...

* WHAT...Snow expected. Total snow accumulations of 2 to 4 inches.

* WHERE...Crawford county.

* WHEN...Until 4 PM EST Wednesday.

* IMPACTS...Plan on slippery road conditions. The hazardous 
  conditions could impact the morning or evening commute.

* ADDITIONAL DETAILS...Greatest snow accumulations are expected to
  occur across far northern Crawford County. Heaviest snow is
  expected to be between 12 AM and 5 AM. Snow showers will diminish
  during the day Wednesday.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

The Pennsylvania Department of Transportation and Pennsylvania
Turnpike Commission remind motorists to adjust speeds based on
driving conditions as winter weather impacts Pennsylvania
roadways. Visit www.511pa.com for the latest travel, roadway, and
traffic conditions.

&&

$$

OHZ011>014-089-200330-
/O.EXB.KCLE.WW.Y.0003.210120T0000Z-210120T1500Z/
Cuyahoga-Lake-Geauga-Ashtabula Inland-Ashtabula Lakeshore-
Including the cities of Cleveland, Mentor, Willoughby, Eastlake, 
Painesville, Willowick, Wickliffe, Chardon, South Russell, 
Bainbridge, Chesterland, Middlefield, Burton, Jefferson, Orwell, 
Andover, Roaming Shores, Ashtabula, Conneaut, and Geneva
228 PM EST Tue Jan 19 2021

...WINTER WEATHER ADVISORY IN EFFECT FROM 7 PM THIS EVENING TO
10 AM EST WEDNESDAY...

* WHAT...Snow expected. Total snow accumulations of 2 to 5 inches.

* WHERE...Cuyahoga, Lake, Geauga, Ashtabula Inland and Ashtabula 
  Lakeshore counties.

* WHEN...From 7 PM this evening to 10 AM EST Wednesday.

* IMPACTS...Plan on slippery road conditions. The hazardous 
  conditions could impact the morning commute.

* ADDITIONAL DETAILS...Lower amounts of around two inches expected
  in western Cuyahoga and southern Ashtabula. The heaviest snow 
  is expected to occur between 10 PM and 4 AM. Snowfall rates of 
  up to an inch per hour and visibilities reduced to a quarter 
  mile are possible in the heaviest snow showers. Snow showers 
  will diminish during the day Wednesday.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

PAZ001-200330-
/O.EXT.KCLE.WW.Y.0003.210119T2100Z-210120T2100Z/
Northern Erie-
Including the city of Erie
228 PM EST Tue Jan 19 2021

...WINTER WEATHER ADVISORY NOW IN EFFECT UNTIL 4 PM EST
WEDNESDAY...

* WHAT...Snow expected. Total snow accumulations of 4 to 7 
  inches.

* WHERE...Northern Erie county.

* WHEN...Until 4 PM EST Wednesday.

* IMPACTS...Travel could be very difficult. The hazardous 
  conditions could impact the morning or evening commute.

* ADDITIONAL DETAILS...Lake effect snow will begin across the
  northeast part of the county this evening, becoming more
  widespread late tonight. The heaviest snow is expected to occur
  between 9 PM and 3 AM. Snowfall rates of up to an inch per hour
  and visibilities reduced to a quarter mile are possible in the
  heaviest snow showers. Snow showers will diminish during the 
  day Wednesday.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

The Pennsylvania Department of Transportation and Pennsylvania
Turnpike Commission remind motorists to adjust speeds based on
driving conditions as winter weather impacts Pennsylvania
roadways. Visit www.511pa.com for the latest travel, roadway, and
traffic conditions.

&&

$$

For more information from the National Weather Service visit
http://www.weather.gov/cle
4 follow-up statements
092 
WWUS41 KCLE 191950 CCA
WSWCLE

URGENT - WINTER WEATHER MESSAGE...CORRECTED
National Weather Service Cleveland OH
250 PM EST Tue Jan 19 2021

...Lake Effect Snow Expected Tonight...

.Lake effect snow will begin falling this evening across northeast
Erie County, PA. This lake effect snow will overspread northeast 
Ohio and northwest Pennsylvania through the overnight hours
tonight, mainly for the primary snowbelt. Two to five inches are 
expected in the advisory area with up to 9 inches in Erie County, 
mainly south of I-90. Snowfall rates of up to an inch per hour and
visibilities reduced to a quarter mile are possible in the 
heaviest snow showers.

PAZ002-200330-
/O.UPG.KCLE.WW.Y.0003.210120T0000Z-210120T1800Z/
/O.COR.KCLE.LE.W.0002.210119T2100Z-210120T2100Z/
Southern Erie-
Including the cities of Edinboro, Corry, and Union City
250 PM EST Tue Jan 19 2021

...LAKE EFFECT SNOW WARNING IN EFFECT UNTIL 4 PM EST WEDNESDAY...

* WHAT...Heavy lake effect snow expected. Total snow 
  accumulations of 5 to 9 inches.

* WHERE...Southern Erie county.

* WHEN...Until 4 PM EST Wednesday.

* IMPACTS...Travel could be very difficult. The hazardous 
  conditions could impact the morning or evening commute.

* ADDITIONAL DETAILS...Lake effect snow will begin across the
  northeast part of the county this evening, becoming more
  widespread late tonight. The heaviest snow is expected to occur
  between 9 PM and 3 AM. Snowfall rates of up to an inch per hour
  and visibilities reduced to a quarter mile are possible in the
  heaviest snow showers. Snow showers will diminish during the 
  day Wednesday.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

The Pennsylvania Department of Transportation and Pennsylvania
Turnpike Commission strongly encourage motorists to heed all
travel restrictions and delay unnecessary travel. Visit
www.511pa.com for the latest travel, roadway, and traffic
conditions.

&&

Experimental content below...do not use operationally
Please see below links for more information on this experiment
http://www.weather.gov/buf/polygon_pdd
http://www.nws.noaa.gov/os/notification/
pns15lake_effect_snowaaa.htm
To view the experimental polygons please see:
http://www.weather.gov/buf/lespolygon
COORD...4212 7975 4212 7978 4221 7976 4221 7979 
        4215 7989 4216 7995 4212 8001 4199 8006 4198 7986 
        4199 7977 
TIME Y21M01D19T2100Z-Y21M01D20T2100Z

$$

PAZ003-200330-
/O.EXB.KCLE.WW.Y.0003.210119T2100Z-210120T2100Z/
Crawford-
Including the cities of Meadville and Titusville
250 PM EST Tue Jan 19 2021

...WINTER WEATHER ADVISORY IN EFFECT UNTIL 4 PM EST WEDNESDAY...

* WHAT...Snow expected. Total snow accumulations of 2 to 4 inches.

* WHERE...Crawford county.

* WHEN...Until 4 PM EST Wednesday.

* IMPACTS...Plan on slippery road conditions. The hazardous 
  conditions could impact the morning or evening commute.

* ADDITIONAL DETAILS...Greatest snow accumulations are expected to
  occur across far northern Crawford County. Heaviest snow is
  expected to be between 12 AM and 5 AM. Snow showers will diminish
  during the day Wednesday.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

The Pennsylvania Department of Transportation and Pennsylvania
Turnpike Commission remind motorists to adjust speeds based on
driving conditions as winter weather impacts Pennsylvania
roadways. Visit www.511pa.com for the latest travel, roadway, and
traffic conditions.

&&

$$

OHZ011>014-089-200330-
/O.EXB.KCLE.WW.Y.0003.210120T0000Z-210120T1500Z/
Cuyahoga-Lake-Geauga-Ashtabula Inland-Ashtabula Lakeshore-
Including the cities of Cleveland, Mentor, Willoughby, Eastlake, 
Painesville, Willowick, Wickliffe, Chardon, South Russell, 
Bainbridge, Chesterland, Middlefield, Burton, Jefferson, Orwell, 
Andover, Roaming Shores, Ashtabula, Conneaut, and Geneva
250 PM EST Tue Jan 19 2021

...WINTER WEATHER ADVISORY IN EFFECT FROM 7 PM THIS EVENING TO
10 AM EST WEDNESDAY...

* WHAT...Snow expected. Total snow accumulations of 2 to 5 inches.

* WHERE...Cuyahoga, Lake, Geauga, Ashtabula Inland and Ashtabula 
  Lakeshore counties.

* WHEN...From 7 PM this evening to 10 AM EST Wednesday.

* IMPACTS...Plan on slippery road conditions. The hazardous 
  conditions could impact the morning commute.

* ADDITIONAL DETAILS...Lower amounts of around two inches expected
  in western Cuyahoga and southern Ashtabula. The heaviest snow 
  is expected to occur between 10 PM and 4 AM. Snowfall rates of 
  up to an inch per hour and visibilities reduced to a quarter 
  mile are possible in the heaviest snow showers. Snow showers 
  will diminish during the day Wednesday.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

PAZ001-200330-
/O.EXT.KCLE.WW.Y.0003.210119T2100Z-210120T2100Z/
Northern Erie-
Including the city of Erie
250 PM EST Tue Jan 19 2021

...WINTER WEATHER ADVISORY NOW IN EFFECT UNTIL 4 PM EST
WEDNESDAY...

* WHAT...Snow expected. Total snow accumulations of 4 to 7 
  inches.

* WHERE...Northern Erie county.

* WHEN...Until 4 PM EST Wednesday.

* IMPACTS...Travel could be very difficult. The hazardous 
  conditions could impact the morning or evening commute.

* ADDITIONAL DETAILS...Lake effect snow will begin across the
  northeast part of the county this evening, becoming more
  widespread late tonight. The heaviest snow is expected to occur
  between 9 PM and 3 AM. Snowfall rates of up to an inch per hour
  and visibilities reduced to a quarter mile are possible in the
  heaviest snow showers. Snow showers will diminish during the 
  day Wednesday.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

The Pennsylvania Department of Transportation and Pennsylvania
Turnpike Commission remind motorists to adjust speeds based on
driving conditions as winter weather impacts Pennsylvania
roadways. Visit www.511pa.com for the latest travel, roadway, and
traffic conditions.

&&

$$

For more information from the National Weather Service visit
http://www.weather.gov/cle
905 
WWUS41 KCLE 200234
WSWCLE

URGENT - WINTER WEATHER MESSAGE
National Weather Service Cleveland OH
934 PM EST Tue Jan 19 2021

...Lake Effect Snow Expected Tonight...

.Lake effect snow will continue across Erie County, Pennsylvania.
This lake effect snow will also affect northeast Ohio and 
northwest Pennsylvania through the overnight hours. Two to five 
inches of snow are expected in the advisory area with up to 9 
inches in Erie County in Pennsylvania, mainly south of I-90. 
Snowfall rates of up to an inch per hour and visibilities reduced 
to a quarter mile are possible in the heaviest snow showers.

PAZ002-201045-
/O.CON.KCLE.LE.W.0002.000000T0000Z-210120T2100Z/
Southern Erie-
Including the cities of Edinboro, Corry, and Union City
934 PM EST Tue Jan 19 2021

...LAKE EFFECT SNOW WARNING REMAINS IN EFFECT UNTIL 4 PM EST
WEDNESDAY...

* WHAT...Heavy lake effect snow occurring. Additional snow 
  accumulations of 4 to 6 inches.

* WHERE...Southern Erie county.

* WHEN...Until 4 PM EST Wednesday.

* IMPACTS...Travel could be very difficult. The hazardous 
  conditions could impact the morning commute.

* ADDITIONAL DETAILS...Lake effect snow will continue across the
  area and become more widespread overnight. The heaviest snow is
  expected to occur between 9 PM and 3 AM. Snowfall rates of up to
  one inch per hour and visibilities reduced to a quarter mile 
  are possible in the heaviest snow showers. Snow showers will 
  diminish during the day Wednesday.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

The Pennsylvania Department of Transportation and Pennsylvania
Turnpike Commission strongly encourage motorists to heed all
travel restrictions and delay unnecessary travel. Visit
www.511pa.com for the latest travel, roadway, and traffic
conditions.

&&

Experimental content below...do not use operationally
Please see below links for more information on this experiment
http://www.weather.gov/buf/polygon_pdd
http://www.nws.noaa.gov/os/notification/
pns15lake_effect_snowaaa.htm
To view the experimental polygons please see:
http://www.weather.gov/buf/lespolygon
COORD...4212 7975 4212 7978 4221 7976 4221 7979 
        4215 7989 4216 7995 4212 8001 4199 8006 4198 7986 
        4199 7977 
TIME Y21M01D19T2100Z-Y21M01D20T2100Z

$$

PAZ001-003-201045-
/O.CON.KCLE.WW.Y.0003.000000T0000Z-210120T2100Z/
Northern Erie-Crawford-
Including the cities of Erie, Meadville, and Titusville
934 PM EST Tue Jan 19 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 4 PM EST
WEDNESDAY...

* WHAT...Lake effect snow occurring. Additional snow 
  accumulations of 2 to 4 inches.

* WHERE...Northern Erie and Crawford counties.

* WHEN...Until 4 PM EST Wednesday.

* IMPACTS...Plan on slippery road conditions. The hazardous 
  conditions could impact the morning commute.

* ADDITIONAL DETAILS...Greatest snow accumulations are expected to
  occur across far northern Crawford County. Heaviest snow is
  expected to be between 12 AM and 5 AM. Snow showers will
  diminish during the day Wednesday.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

The Pennsylvania Department of Transportation and Pennsylvania
Turnpike Commission remind motorists to adjust speeds based on
driving conditions as winter weather impacts Pennsylvania
roadways. Visit www.511pa.com for the latest travel, roadway, and
traffic conditions.

&&

$$

OHZ011>014-089-201045-
/O.CON.KCLE.WW.Y.0003.000000T0000Z-210120T1500Z/
Cuyahoga-Lake-Geauga-Ashtabula Inland-Ashtabula Lakeshore-
Including the cities of Cleveland, Mentor, Willoughby, Eastlake, 
Painesville, Willowick, Wickliffe, Chardon, South Russell, 
Bainbridge, Chesterland, Middlefield, Burton, Jefferson, Orwell, 
Andover, Roaming Shores, Ashtabula, Conneaut, and Geneva
934 PM EST Tue Jan 19 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 10 AM EST
WEDNESDAY...

* WHAT...Lake effect snow occurring. Additional snow 
  accumulations of 1 to 3 inches.

* WHERE...Lake, Geauga, Cuyahoga, Ashtabula Inland and Ashtabula 
  Lakeshore counties.

* WHEN...Until 10 AM EST Wednesday.

* IMPACTS...Plan on slippery road conditions. The hazardous 
  conditions could impact the morning commute.

* ADDITIONAL DETAILS...The heaviest snow is expected to occur
  between 10 PM and 4 AM. Snowfall rates of up to one inch per 
  hour and visibilities reduced to a quarter mile are possible in 
  the heaviest snow showers. Snow showers will diminish during the
  day Wednesday.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

For more information from the National Weather Service visit
http://www.weather.gov/cle
757 
WWUS41 KCLE 201045
WSWCLE

URGENT - WINTER WEATHER MESSAGE
National Weather Service Cleveland OH
545 AM EST Wed Jan 20 2021

OHZ011>014-089-201145-
/O.CAN.KCLE.WW.Y.0003.000000T0000Z-210120T1500Z/
Cuyahoga-Lake-Geauga-Ashtabula Inland-Ashtabula Lakeshore-
Including the cities of Cleveland, Mentor, Willoughby, Eastlake, 
Painesville, Willowick, Wickliffe, Chardon, South Russell, 
Bainbridge, Chesterland, Middlefield, Burton, Jefferson, Orwell, 
Andover, Roaming Shores, Ashtabula, Conneaut, and Geneva
545 AM EST Wed Jan 20 2021

...WINTER WEATHER ADVISORY IS CANCELLED...

Snow has mostly ended across the area, with any additional
snowfall resulting in little or no accumulation. Therefore, the
advisory has been cancelled. 

$$

PAZ002-201845-
/O.CON.KCLE.LE.W.0002.000000T0000Z-210120T2100Z/
Southern Erie-
Including the cities of Edinboro, Corry, and Union City
545 AM EST Wed Jan 20 2021

...LAKE EFFECT SNOW WARNING REMAINS IN EFFECT UNTIL 4 PM EST THIS
AFTERNOON...

* WHAT...Heavy lake effect snow occurring. Additional snow
  accumulations of 1 to 3 inches, bringing storm total snow
  accumulations of 4 to 8 inches. 

* WHERE...Southern Erie county.

* WHEN...Until 4 PM EST this afternoon.

* IMPACTS...Plan on slippery road conditions. The hazardous 
  conditions could impact the morning commute.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

The Pennsylvania Department of Transportation and Pennsylvania
Turnpike Commission strongly encourage motorists to heed all
travel restrictions and delay unnecessary travel. Visit
www.511pa.com for the latest travel, roadway, and traffic
conditions.

&&

Experimental content below...do not use operationally
Please see below links for more information on this experiment
http://www.weather.gov/buf/polygon_pdd
http://www.nws.noaa.gov/os/notification/
pns15lake_effect_snowaaa.htm
To view the experimental polygons please see:
http://www.weather.gov/buf/lespolygon
COORD...4212 7975 4212 7978 4221 7976 4221 7979 
        4215 7989 4216 7995 4212 8001 4199 8006 4198 7986 
        4199 7977 
TIME Y21M01D19T2100Z-Y21M01D20T2100Z

$$

PAZ001-003-201845-
/O.CON.KCLE.WW.Y.0003.000000T0000Z-210120T2100Z/
Northern Erie-Crawford-
Including the cities of Erie, Meadville, and Titusville
545 AM EST Wed Jan 20 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 4 PM EST THIS
AFTERNOON...

* WHAT...Lake effect snow occurring. Additional snow 
  accumulations of up to two inches.

* WHERE...Northern Erie and Crawford counties.

* WHEN...Until 4 PM EST this afternoon.

* IMPACTS...Plan on slippery road conditions. The hazardous
  conditions could impact the morning commute.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

The Pennsylvania Department of Transportation and Pennsylvania
Turnpike Commission remind motorists to adjust speeds based on
driving conditions as winter weather impacts Pennsylvania
roadways. Visit www.511pa.com for the latest travel, roadway, and
traffic conditions.

&&

$$

For more information from the National Weather Service visit
http://www.weather.gov/cle
018 
WWUS41 KCLE 201239
WSWCLE

URGENT - WINTER WEATHER MESSAGE
National Weather Service Cleveland OH
739 AM EST Wed Jan 20 2021

PAZ002-201345-
/O.CAN.KCLE.LE.W.0002.000000T0000Z-210120T2100Z/
Southern Erie-
Including the cities of Edinboro, Corry, and Union City
739 AM EST Wed Jan 20 2021

...LAKE EFFECT SNOW WARNING IS CANCELLED...

The threat of heavy lake effect snow has ended.

$$

PAZ001-003-201345-
/O.CAN.KCLE.WW.Y.0003.000000T0000Z-210120T2100Z/
Northern Erie-Crawford-
Including the cities of Erie, Meadville, and Titusville
739 AM EST Wed Jan 20 2021

...WINTER WEATHER ADVISORY IS CANCELLED...

The threat of steady lake effect snow has ended.

$$

For more information from the National Weather Service visit
http://www.weather.gov/cle

The office that day

Everything else NWS Cleveland, OH issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jan 19, 4:06 AM ESTWinter Weather AdvisoryCLECrawford, Erie28 hr
Jan 19, 9:21 AM ESTSpecial Weather StatementCLEErie84 min

Nearby

Lake Effect Snow Warnings in Pennsylvania, 2021Every lake effect snow warning 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.