Alert archive / Ohio / Winter Weather Advisories in 2020

Winter Weather Advisory 21, NWS Cleveland, OH

December 25, 2020Trumbull County, Ohio

NWS Cleveland, OH issued this winter weather advisory at Dec 25, 2020, 1:11 PM EST for Trumbull County, Ohio. It was in force for 6 hr.

The area

The counties it named.

The facts

Issued
Dec 25, 2020, 1:11 PM EST (18:11 UTC)
Expired
Dec 25, 2020, 6:50 PM EST
In force
6 hr
Issued by
NWS Cleveland, OH

County Trumbull County, OH

The radar

The Cleveland radar (KCLE), 92 km from the middle of the area, began a volume at 18:10 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

Pittsburgh, PA (KPIT), launched 12:00Z, 6.2 hours before the alert went out and 115 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, Pittsburgh, PA at 12:00Z on 2020-12-25Temperature 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, Pittsburgh, PA at 12:00Z on 2020-12-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -133 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
633 m above ground
0-6 km bulk shear
123 kt
0-1 km storm-relative helicity
-133 m²/s²
0-3 km storm-relative helicity
147 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

804 
WWUS41 KCLE 251811
WSWCLE

URGENT - WINTER WEATHER MESSAGE
National Weather Service Cleveland OH
111 PM EST Fri Dec 25 2020

...Christmas Winter Storm Will Continue for Northeast Ohio and
Northwest Pennsylvania as the Event Transitions to Lake Effect
Snow...

.Widespread moderate to heavy snow continues across Northeast
Ohio and Northwest Pennsylvania. Lake effect multiband snow will
continue through early afternoon and then the snow will
transition to a westerly fetch over Lake Erie. West-east lake
effect snow bands will develop by afternoon and intensify during
the late afternoon to evening hours along the northeast Ohio and
northwest Pennsylvania lakeshore. Westerly winds with gusts to 30-
35 mph will cause blowing and drifting snow, which could
significantly reduce visibility. The strongest winds will be
closest to Lake Erie. Temperatures in the teens and 20s are
expected this afternoon, dropping into the low-to-mid teens
tonight. Wind chills will fall into the single digits to near
zero tonight.

OHZ023-260215-
/O.EXP.KCLE.WS.W.0002.000000T0000Z-201225T1800Z/
/O.NEW.KCLE.WW.Y.0021.201225T1811Z-201226T0300Z/
Trumbull-
Including the cities of Warren and Niles
111 PM EST Fri Dec 25 2020

...WINTER WEATHER ADVISORY IN EFFECT UNTIL 10 PM EST THIS
EVENING...
...WINTER STORM WARNING HAS EXPIRED...

* WHAT...Snow occurring. Additional snow accumulations of 2 to 4
  inches, mainly across the northern half of the county.

* WHERE...Trumbull county.

* WHEN...Until 10 PM EST this evening.

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

* ADDITIONAL DETAILS...Lake effect snow bands are beginning to
  shift north to the lakeshore. During the transition, the snow
  bands will produce additional snow across the northern half of
  the county.

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.

&&

$$

OHZ010-020>022-032-033-251915-
/O.EXP.KCLE.WS.W.0002.000000T0000Z-201225T1800Z/
Lorain-Medina-Summit-Portage-Stark-Mahoning-
Including the cities of Lorain, Elyria, North Ridgeville, 
Avon Lake, Brunswick, Medina, Wadsworth, Akron, Kent, Aurora, 
Streetsboro, Ravenna, Canton, Massillon, Alliance, Youngstown, 
Boardman, and Austintown
111 PM EST Fri Dec 25 2020

...WINTER STORM WARNING HAS EXPIRED...

The snow that has fallen across the area is transitioning into a
west to east lake effect snow band and will gradually lift north
of the local area. This will allow the snow to taper off and
therefore should not produce much in the way of snow accumulations
the rest of the afternoon. Therefore, the winter storm warning 
has been allowed to expire.

$$

PAZ001-002-260215-
/O.CON.KCLE.WS.W.0002.000000T0000Z-201226T1800Z/
Northern Erie-Southern Erie-
Including the cities of Erie, Edinboro, Corry, and Union City
111 PM EST Fri Dec 25 2020

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 1 PM EST
SATURDAY...

* WHAT...Heavy snow occurring. Snow accumulations of 10 to 18 
  inches. Winds gusting as high as 35 mph.

* WHERE...Northern Erie and Southern Erie counties.

* WHEN...Until 1 PM EST Saturday.

* IMPACTS...Travel could be very difficult to impossible. The 
  hazardous conditions could impact the evening commute.

* ADDITIONAL DETAILS...Snow is transitioning to primarily lake 
  effect snow with northwest multibanded lake effect snow 
  becoming more westerly this afternoon. The lake effect snow 
  bands are expected to intensify during the late afternoon to 
  evening hours. These bands will be most intense near the Lake 
  Erie shoreline in extreme Northwest Pennsylvania, where 
  snowfall rates could reach as high as two inches per hour. 
  Westerly winds with gusts to 30- 35 mph will cause blowing and 
  drifting snow, which could significantly reduce visibility. 
  The strongest winds will be closest to Lake Erie. Temperatures 
  across the region will remain in the 20s this afternoon, 
  dropping into the low- to-mid teens tonight. Wind chills will 
  be in the single digits to near zero tonight.

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.

&&

$$

PAZ003-260215-
/O.CON.KCLE.WS.W.0002.000000T0000Z-201226T1800Z/
Crawford-
Including the cities of Meadville and Titusville
111 PM EST Fri Dec 25 2020

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 1 PM EST
SATURDAY...

* WHAT...Heavy snow occurring. Snow accumulations of 5 to 10 
  inches.

* WHERE...Crawford county.

* WHEN...Until 1 PM EST Saturday.

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

* ADDITIONAL DETAILS...Snow will transition from northwest 
  multibands to a westerly fetch over Lake Erie this afternoon. 
  Any lake effect snow for Crawford County will remain fairly 
  scattered through Saturday and the best accumulations will be 
  in the northern portion of the county. Temperatures across the 
  region will be in the teens and 20s this afternoon, dropping 
  into the low-to-mid teens tonight. Wind chills will fall into 
  the single digits to near zero tonight.

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.

&&

$$

OHZ011>014-089-260215-
/O.CON.KCLE.WS.W.0002.000000T0000Z-201226T1200Z/
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
111 PM EST Fri Dec 25 2020

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 7 AM EST
SATURDAY...

* WHAT...Heavy snow occurring. Snow accumulations of 6 to 14 
  inches with the highest values near Lake Erie. Winds gusting as 
  high as 35 MPH at times, primarily near the lakeshore.

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

* WHEN...Until 7 AM EST Saturday.

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

* ADDITIONAL DETAILS...Multibanded lake effect snow bands will 
  transition to a general westerly fetch over Lake Erie this 
  afternoon. West-east lake effect snow bands should develop 
  during the afternoon and intensify during the late afternoon 
  to evening hours. These bands will be most intense near the 
  Lake Erie shoreline in extreme Northeast Ohio, where snowfall 
  rates could reach 1 to 2 inches per hour. Westerly winds with 
  gusts to 30- 35 mph will cause blowing and drifting snow, 
  which could significantly reduce visibility. The strongest 
  winds will be closest to Lake Erie. Temperatures across the 
  region will remain in the teens and 20s this afternoon, 
  dropping into the low-to- mid teens tonight. Wind chills will 
  fall into the single digits to near zero tonight.

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.

&&

$$

For more information from the National Weather Service visit
http://www.weather.gov/cle
2 follow-up statements
082 
WWUS41 KCLE 252025
WSWCLE

URGENT - WINTER WEATHER MESSAGE
National Weather Service Cleveland OH
325 PM EST Fri Dec 25 2020

...Lake Effect Snow Will Continue in the Primary Snowbelt...

.The snow has transitioned to lake effect as flow shifted to a
westerly direction. This forced the bands of snow to develop over
the lakeshore counties this afternoon. The snow bands are expected
to shift north and south as troughs of low pressure move through
the area this afternoon through Saturday. Moderate snow intensity
is expected with snowfall rates up to 1 inch per hour where
squalls persist. Westerly winds with gusts to 30 mph will cause 
blowing and drifting snow, which could significantly reduce 
visibility. The strongest winds will be closest to Lake Erie. 
Temperatures in the teens and 20s this afternoon will drop into 
the lower to middle teens tonight. Wind chills will fall into the 
single digits to near zero tonight.

PAZ001-002-260430-
/O.CON.KCLE.WS.W.0002.000000T0000Z-201226T1800Z/
Northern Erie-Southern Erie-
Including the cities of Erie, Edinboro, Corry, and Union City
325 PM EST Fri Dec 25 2020

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 1 PM EST
SATURDAY...

* WHAT...Heavy snow occurring. Additional snow accumulations of 8
  to 13 inches. Winds gusting as high as 30 mph.

* WHERE...Northern Erie and Southern Erie counties.

* WHEN...Until 1 PM EST Saturday.

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

* ADDITIONAL DETAILS...The snow band is expected to shift north
  and south through Saturday. Visibilities will be reduced and
  higher wind gusts will take place in squalls that will produce 
  blowing and drifting snow. Snowfall rates up to 1 inch an hour 
  can be expected in the heaviest snow band. Travel will be 
  difficult within the snow band and motorists should allow extra 
  time for travel.

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.

&&

$$

PAZ003-260430-
/O.CON.KCLE.WS.W.0002.000000T0000Z-201226T1800Z/
Crawford-
Including the cities of Meadville and Titusville
325 PM EST Fri Dec 25 2020

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 1 PM EST
SATURDAY...

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

* WHERE...Crawford county.

* WHEN...Until 1 PM EST Saturday.

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

* ADDITIONAL DETAILS...Periods of moderate to heavy snow can be
  expected; especially later this evening as the main snow band
  shifts north and south across the area. Visibilities will be
  reduced where squalls persist producing blowing and drifting 
  snow. Motorists should allow for extra time to travel.

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.

&&

$$

OHZ011>014-089-260430-
/O.CON.KCLE.WS.W.0002.000000T0000Z-201226T1200Z/
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
325 PM EST Fri Dec 25 2020

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 7 AM EST
SATURDAY...

* WHAT...Heavy snow occurring. Additional snow accumulations of 4
  to 8 inches. Winds gusting as high as 30 mph.

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

* WHEN...Until 7 AM EST Saturday.

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

* ADDITIONAL DETAILS...The snow band is expected to shift north
  and south through Saturday. Visibilities will be reduced and
  higher wind gusts will take place in squalls from blowing and
  drifting snow. Snowfall rates up to 1 inch an hour can be 
  expected in the heaviest snow band. Travel will be difficult 
  within the snow band and motorists should allow extra time for 
  travel.

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.

&&

$$

OHZ023-260300-
/O.CON.KCLE.WW.Y.0021.000000T0000Z-201226T0300Z/
Trumbull-
Including the cities of Warren and Niles
325 PM EST Fri Dec 25 2020

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 10 PM EST THIS
EVENING...

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

* WHERE...Trumbull county.

* WHEN...Until 10 PM EST this evening.

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

* ADDITIONAL DETAILS...Periods of snow can be expected this
  evening as the snow band shifts back south across the area.
  Snowfall rates up to 1 inch an hour are expected with the band.
  Gusty winds will cause reduced visibilities in the blowing and
  drifting of the snow. Use extra caution when traveling this
  evening. 

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
343 
WWUS41 KCLE 252350
WSWCLE

URGENT - WINTER WEATHER MESSAGE
National Weather Service Cleveland OH
650 PM EST Fri Dec 25 2020

...Lake Effect Snow To Continue Across Northeast Ohio And
Northwest Pennsylvania Tonight...

.The heaviest lake effect snow across the primary snowbelt is
expected to occur late this evening and overnight. By late tonight
into tomorrow morning, the heaviest lake effect bands will
transition primarily offshore and into Buffalo's area as the
orientation becomes more southwest to northeast. Moderate snow 
intensity is expected with snowfall rates around an inch per hour
where squalls persist. Westerly winds with gusts to 35 mph will 
cause blowing and drifting snow, which could significantly reduce 
visibility. The strongest winds will be confined to the lakeshore. Temperatures
in the teens and 20s this evening will drop into the lower to 
middle teens tonight. Wind chills will fall into the single digits
to perhaps below zero this evening and overnight.

OHZ023-260100-
/O.CAN.KCLE.WW.Y.0021.000000T0000Z-201226T0300Z/
Trumbull-
Including the cities of Warren and Niles
650 PM EST Fri Dec 25 2020

...WINTER WEATHER ADVISORY IS CANCELLED...

Snow showers are expected to persist over the next several hours,
but additional accumulations should be an inch or less.

$$

PAZ001-002-260800-
/O.CON.KCLE.WS.W.0002.000000T0000Z-201226T1800Z/
Northern Erie-Southern Erie-
Including the cities of Erie, Edinboro, Corry, and Union City
650 PM EST Fri Dec 25 2020

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 1 PM EST
SATURDAY...

* WHAT...Heavy snow occurring. Additional snow accumulations of up
  to 9 inches. Winds gusting as high as 35 mph.

* WHERE...Northern Erie and Southern Erie counties.

* WHEN...Until 1 PM EST Saturday.

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

* ADDITIONAL DETAILS...Snowfall rates up to an inch per hour can 
  be expected in the heaviest snow bands. Travel will be difficult
  within the snow band and motorists should allow extra time for 
  travel.

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.

&&

$$

PAZ003-260800-
/O.CON.KCLE.WS.W.0002.000000T0000Z-201226T1800Z/
Crawford-
Including the cities of Meadville and Titusville
650 PM EST Fri Dec 25 2020

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 1 PM EST
SATURDAY...

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

* WHERE...Crawford county.

* WHEN...Until 1 PM EST Saturday.

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

* ADDITIONAL DETAILS...The highest snow accumulations will be
  confined to the northern portion of Crawford County.

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.

&&

$$

OHZ011>014-089-260800-
/O.CON.KCLE.WS.W.0002.000000T0000Z-201226T1200Z/
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
650 PM EST Fri Dec 25 2020

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 7 AM EST
SATURDAY...

* WHAT...Heavy snow occurring. Additional snow accumulations of up
  to 7 inches. Winds gusting as high as 40 mph.

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

* WHEN...Until 7 AM EST Saturday.

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

* ADDITIONAL DETAILS...Highest additional snow accumulations will
  be located across eastern Cuyahoga, Lake, northern Geauga, and
  the northern half of Ashtabula. Snowfall rates up to an inch per
  hour can be expected in the heaviest bands.

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.

&&

$$

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

What forecasters said that day

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

NWS Cleveland, OH wrote its last area forecast discussion before this winter weather advisory went out at Dec 25, 9:51 AM EST, 3 hours 20 minutes earlier.

Area forecast discussion, Dec 25, 9:51 AM EST, 3 hours 20 minutes before
Area Forecast Discussion
National Weather Service Cleveland OH
951 AM EST Fri Dec 25 2020

.SYNOPSIS...
Low pressure east of Lake Ontario will depart northeast into Canada
today, leaving behind a residual trough over the eastern Great
Lakes. High pressure will build in from the southwest on Saturday.
The next low pressure system will enter the Great Lakes region on
Sunday night and extend a cold front across the area on Monday. High
pressure will return to the region on Tuesday.

&&

.NEAR TERM /THROUGH SATURDAY/...
Multiple lake effect snow bands have developed from Lorain
County east along the lakeshore. The latest radar continues to
show the bands starting to shift to a more westerly direction.
As time passes during the rest of the morning, the band should
become a primary band that will extend up the lakeshore during
the afternoon into tonight. More significant snow accumulations
are expected in the warning area during this time period.
Current forecast trends are on target with the transition of the
multibands to a single band so very little if any adjustment
will be needed at this time. As the bands shift up the
lakeshore, snow should begin to taper off across the inland
counties and we anticipate allowing the southern warning to
expire on time. Areas in the western portion of the forecast
still have a shot at developing some lake effect off Lake
Michigan with light accumulations there. Temperatures should
hold steady through the afternoon in the lower 20s and upper
teens before falling into the teens tonight.

Previous Discussion...
Snow remains the top concern of the near term forecast period. A
broad area of snow remains over the region, but the snow shield
is losing a bit of its luster as the better frontogenetic
forcing pulls away from the region and the moisture begins to
become more concentrated in the lowest levels of the atmosphere.
Therefore, snowfall across the area this morning has generally settled
to half inch per hour or less rates. All eyes now turn to the
transition to a lake effect snow event. Lake effect snow bands
are beginning to organize over central Lake Erie this morning,
taking advantage of a west-northwest fetch over the lake, good
low-level moisture, and fairly good lake-induced instability
marked by sfc-850mb delta T's of 18C. However, these bands are
still struggling a bit due to the influence of the nearby low
pressure system and some shear and low inversion heights are
keeping the snow from getting too out of hand this morning.
Although some better snow is falling in northern Lorain and
Cuyahoga Counties, which

This will all change over the next 8 to 12 hours as the low
pressure system departs the region, wind shear diminishes, and
inversion heights rise in persistent westerly flow. West-east
lake effect snow bands will develop and bring heavy lake effect
snow with rates up to 2 inches per hour at times this afternoon
into tonight. Favored lake effect snow areas will be closest to
the lakeshore and have maintained highest snow amounts in Lake,
Ashtabula, and Erie PA Counties. There has been increasing
confidence in high snowfall totals in Erie County PA as a more
robust lake effect snow band is expected to form by this evening
as classic lake effect snow components align with a well
saturated DGZ, good lift in this important DGZ layer, and
inversion heights rising to 8000 ft. This is when we suspect
that snowfall rates will maximize to 2 inches per hour, if not
higher for a brief period. High pressure begins ridging in from
the southwest late tonight into Saturday, allowing for more
southwesterly winds across the region. This should push the lake
effect snow bands north, becoming more of an issue for western
New York for the end of the period.

Elsewhere, weather conditions will marginally improve through
the period with scattered snow lingering this morning before
drying out later in the period. Some snow showers and low clouds
resulting from lake effect off Lake Michigan may impact the I-75
corridor later today, resulting in minor accumulations.
Temperatures across the area have cooled significantly and will
largely remain in the teens or 20s before falling back into the
teens tonight. Wind chills across the region will be low in the
single digits or near zero.

&&

.SHORT TERM /SATURDAY NIGHT THROUGH MONDAY NIGHT/...
Surface trough shifts south again Saturday evening with light snow
showers expanding across portions of the snowbelt and especially
Erie County Pennsylvania. Favored areas may see additional
light accumulations before moisture at 850mb strips away and
snow begins to taper off. Outside of the snowbelt, clouds will tend
to clear from the south with winds becoming light. Another cold
night is expected with lows in the teens across inland NE Ohio and
NW Pennsylvania.

Low pressure will develop over the Midwest on Sunday ahead of a fast
moving trough aloft. As this low reaches Lake Michigan, southerly
flow and warm advection will occur across the area with highs
reaching the upper 30s to lower 40s. This system will track
northeast across the Central Great Lakes through Sunday night,
bringing scattered light rain showers, possibly changing over to
snow as another cold front wraps in from the west on Monday. A lack
of deep moisture will present some limitations for lake effect snow,
but the westerly fetch and return of the cold airmass should result
in snow showers near Lake Erie Monday evening.

&&

.LONG TERM /TUESDAY THROUGH THURSDAY/...
High pressure will be overhead by Tuesday. The long range pattern
remains active as another deep upper level trough develops over
the western United States. Strong southwesterly flow sets up ahead
of the approaching trough with 500mb heights of 560+ dm. Above
normal temperatures are likely Wednesday into Thursday, accompanied
by a plume of deep moisture. Left pops at chance level due to
uncertainty in timing but a period of widespread rain is expected.
This will result in significant melting of the snowpack and will
need to keep an eye on the amount of run-off from rain and melting
snow.

&&

.AVIATION /12Z Friday THROUGH Tuesday/...
Snow lingers across the region this morning, resulting in a mix
of MVFR to LIFR conditions at the terminals this morning.
Conditions will improve in Northwest and Central Ohio today as
snow exits and turns into a predominant lake effect event and
have TAFs improving to VFR at KTOL, KFDY, and KMFD by this
afternoon. Elsewhere, snow is going to linger for a majority of
the day and will keep fairly pessimistic conditions. KCLE and
KERI will be most impacted with heavier snow bands in those
terminals bringing extremely low vsbys and snow rates in excess
of one inch per hour. Eventually KCLE, KCAK, and KYNG improve by
Saturday morning but KERI will still be dealing with IFR/LIFR
snow through the end of the period. Winds will settle on a
westerly direction today and briefly increase this afternoon
with gusts to 30 knots possible. Winds at KERI could get to 35
kt gusts depending on lake effect snow band formation.

Outlook...Non-VFR expected from periods of lake effect snow
across Northeast Ohio and Northwest Pennsylvania through
Saturday. Additional non-VFR possible in rain and/or snow
showers Sunday night into Monday.

&&

.MARINE...
A Small Craft Advisory remains in effect for Lake Erie through
this evening. We are seeing water levels approach the critical
mark on the western basin again and will monitor the need for a Low
Water Advisory. Winds on Lake Erie will increase tonight as a
secondary trough crosses the lake while high pressure expands north
into the Ohio Valley. Have issued a Gale Warning for the east half
of Lake Erie from 10 PM to 10 AM from Lake County eastward although
the entire lake can expect winds to 30 knots. Small Craft Advisories
will be needed again behind the Gale for the remainder of Saturday.

Winds will decrease Saturday night then develop out of the south on
Sunday and increase to 15 to 25 knots as a warm front lifts north
ahead of the next low pressure system. This system will pull another
cold front east across Lake Erie on Monday with winds reaching 30
knots again. Small Craft Advisories will likely be needed again
Sunday night through Monday night.

&&

.CLE WATCHES/WARNINGS/ADVISORIES...
OH...Winter Storm Warning until 7 AM EST Saturday for OHZ011>014-
     089.
     Winter Storm Warning until 1 PM EST this afternoon for OHZ010-
     020>023-032-033.
PA...Winter Storm Warning until 1 PM EST Saturday for PAZ001>003.
MARINE...Small Craft Advisory until 10 PM EST this evening for
     LEZ147>149.
     Gale Warning from 10 PM this evening to 10 AM EST Saturday for
     LEZ147>149-167>169.
     Small Craft Advisory until 7 PM EST Saturday for LEZ142>146.

&&

SYNOPSIS...Sefcovic
NEAR TERM...Lombardy/Sefcovic
SHORT TERM...KEC
LONG TERM...KEC
AVIATION...Sefcovic
MARINE...KEC
Hazardous weather outlook, Dec 25, 5:55 AM EST, 7 hours 16 minutes before
Hazardous Weather Outlook
National Weather Service Cleveland OH
555 AM EST Fri Dec 25 2020

OHZ011>014-089-261100-
Cuyahoga-Lake-Geauga-Ashtabula Inland-Ashtabula Lakeshore-
555 AM EST Fri Dec 25 2020

...WINTER STORM WARNING IN EFFECT UNTIL 7 AM EST SATURDAY...

This Hazardous Weather Outlook is for northeast Ohio.

.DAY ONE...Today and tonight.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Winter Storm Warning.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Winter Storm Warning.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

PAZ001>003-261100-
Northern Erie-Southern Erie-Crawford-
555 AM EST Fri Dec 25 2020

...WINTER STORM WARNING IN EFFECT UNTIL 1 PM EST SATURDAY...

This Hazardous Weather Outlook is for northwest Pennsylvania.

.DAY ONE...Today and tonight.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Winter Storm Warning.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Winter Storm Warning.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

OHZ029>031-038-047-261100-
Richland-Ashland-Wayne-Holmes-Knox-
555 AM EST Fri Dec 25 2020

...WINTER WEATHER ADVISORY IN EFFECT UNTIL 7 AM EST THIS MORNING...

This Hazardous Weather Outlook is for north central Ohio and
northeast Ohio.

.DAY ONE...Today and tonight.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Winter Weather Advisory.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday.

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

OHZ010-020>023-032-033-261100-
Lorain-Medina-Summit-Portage-Trumbull-Stark-Mahoning-
555 AM EST Fri Dec 25 2020

...WINTER STORM WARNING IN EFFECT UNTIL 1 PM EST THIS AFTERNOON...

This Hazardous Weather Outlook is for north central Ohio and
northeast Ohio.

.DAY ONE...Today and tonight.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Winter Storm Warning.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday.

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

OHZ003-006>009-017>019-027-028-036-037-261100-
Lucas-Wood-Ottawa-Sandusky-Erie-Hancock-Seneca-Huron-Wyandot-
Crawford-Marion-Morrow-
555 AM EST Fri Dec 25 2020

This Hazardous Weather Outlook is for north central Ohio and
northwest Ohio.

.DAY ONE...Today and tonight.

Much colder air has entered the region and will persist through
tonight. Gusty westerly winds will cause wind chill temperatures to
dip into the single digits tonight - the coldest air of this winter
season thus far.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday.

Hazardous weather is not expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

LEZ142>146-162>166-261100-
Maumee Bay to Reno Beach OH-Reno Beach to The Islands OH-
The Islands to Vermilion OH-Vermilion to Avon Point OH-
Avon Point to Willowick OH-
Detroit River Lt. to Maumee Bay OH to Reno Beach OH beyond 5NM
offshoreline to US-Canadian border-
Reno Beach to The Islands OH beyond 5NM off shoreline to US-
Canadian border-
The Islands to Vermilion OH beyond 5 nm off shoreline to US-
Canadian border-
Vermilion to Avon Point OH beyond 5 nm off shoreline to US-
Canadian border-
Avon Point to Willowick OH beyond 5 nm off shoreline to US-
Canadian border-
555 AM EST Fri Dec 25 2020

This Hazardous Weather Outlook is for Lake Erie.

.DAY ONE...Today and tonight.

No hazardous weather is expected at this time.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday.

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

LEZ061-147>149-167>169-261100-
Ripley to Buffalo NY extending from 5NM off shoreline to US-
Canadian border-Willowick to Geneva-on-the Lake OH-Geneva-on-the-
Lake to Conneaut OH-Conneaut OH to Ripley NY-Willowick to Geneva-on-
the-Lake OH beyond 5NM off shoreline to US-Canadian border-Geneva-on-
the-Lake to Conneaut OH beyond 5 nm off shoreline to US-
Canadian border-
Conneaut OH to Ripley NY beyond 5 nm off shoreline to US-
Canadian border-
555 AM EST Fri Dec 25 2020

...GALE WARNING IN EFFECT FROM 10 PM THIS EVENING TO 10 AM EST
SATURDAY...

This Hazardous Weather Outlook is for Lake Erie.

.DAY ONE...Today and tonight.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Gale Warning.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Gale Warning.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

In the hours before

Local storm report, Dec 25, 12:00 PM EST, 1 hour 11 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CLEVELAND OH
1200 PM EST FRI DEC 25 2020

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1159 AM     SNOW             CLEVELAND-WESTPARK      41.47N  81.81W
12/25/2020  M2.0 INCH        CUYAHOGA           OH   NWS EMPLOYEE

            SNOWFALL FROM 830AM-1130AM.

&&

EVENT NUMBER CLE2001726

BM
Local storm report, Dec 25, 12:46 PM EST, 25 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CLEVELAND OH
1246 PM EST FRI DEC 25 2020

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1200 PM     SNOW             2 SSE PARMA             41.36N  81.71W
12/25/2020  M3.5 INCH        CUYAHOGA           OH   TRAINED SPOTTER

            12-HOUR SNOWFALL.

&&

EVENT NUMBER CLE2001727

BM
Local storm report, Dec 25, 12:51 PM EST, 20 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CLEVELAND OH
1251 PM EST FRI DEC 25 2020

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0700 AM     SNOW             1 NE BRUNSWICK          41.25N  81.81W
12/25/2020  M7.9 INCH        MEDINA             OH   COCORAHS

            24-HOUR SNOWFALL.

0700 AM     SNOW             1 W GALION              40.73N  82.81W
12/25/2020  M6.0 INCH        CRAWFORD           OH   COCORAHS

            24-HOUR SNOWFALL.

0750 AM     SNOW             SE ELYRIA               41.38N  82.10W
12/25/2020  M7.7 INCH        LORAIN             OH   COCORAHS

            24-HOUR SNOWFALL.

0800 AM     SNOW             2 SE CENTERBURG         40.30N  82.65W
12/25/2020  M8.5 INCH        KNOX               OH   CO-OP OBSERVER

            24-HOUR SNOWFALL.

0800 AM     SNOW             N HIRAM                 41.32N  81.14W
12/25/2020  M8.5 INCH        PORTAGE            OH   COCORAHS

            24-HOUR SNOWFALL.

0800 AM     SNOW             1 NE MIDDLEFIELD        41.46N  81.07W
12/25/2020  M9.0 INCH        GEAUGA             OH   COCORAHS

            24-HOUR SNOWFALL.

0820 AM     SNOW             1 SSW LAKEWOOD          41.47N  81.81W
12/25/2020  M10.3 INCH       CUYAHOGA           OH   COCORAHS

            24-HOUR SNOWFALL.

0900 AM     SNOW             2 ESE MENTOR            41.68N  81.30W
12/25/2020  M11.4 INCH       LAKE               OH   COCORAHS

            24-HOUR SNOWFALL.

1130 AM     SNOW             1 E RAVENNA             41.16N  81.23W
12/25/2020  M8.0 INCH        PORTAGE            OH   COCORAHS

            24-HOUR SNOWFALL.

1239 PM     SNOW             2 N BRECKSVILLE         41.34N  81.61W
12/25/2020  M4.5 INCH        CUYAHOGA           OH   TRAINED SPOTTER

            12-HOUR SNOWFALL.

&&

EVENT NUMBER CLE2001728
EVENT NUMBER CLE2001729
EVENT NUMBER CLE2001730
EVENT NUMBER CLE2001731
EVENT NUMBER CLE2001732
EVENT NUMBER CLE2001733
EVENT NUMBER CLE2001734
EVENT NUMBER CLE2001735
EVENT NUMBER CLE2001736
EVENT NUMBER CLE2001737

BM
Local storm report, Dec 25, 1:01 PM EST, 10 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CLEVELAND OH
101 PM EST FRI DEC 25 2020

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1200 PM     SNOW             1 WSW MADISON           41.77N  81.07W
12/25/2020  M3.7 INCH        LAKE               OH   TRAINED SPOTTER

            6-HOUR SNOWFALL.

&&

EVENT NUMBER CLE2001738

BM
Local storm report, Dec 25, 1:04 PM EST, 7 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CLEVELAND OH
104 PM EST FRI DEC 25 2020

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1251 PM     SNOW             CLEVELAND HOPKINS AIRPO 41.40N  81.85W
12/25/2020  M2.3 INCH        CUYAHOGA           OH   TRAINED SPOTTER

            6-HOUR SNOWFALL.

&&

EVENT NUMBER CLE2001739

BM
Local storm report, Dec 25, 1:07 PM EST, 4 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CLEVELAND OH
107 PM EST FRI DEC 25 2020

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0600 AM     SNOW             1 ESE ALLIANCE          40.91N  81.10W
12/25/2020  M4.8 INCH        STARK              OH   TRAINED SPOTTER

            12-HOUR SNOWFALL.

&&

EVENT NUMBER CLE2001740

BM

The office that day

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

IssuedProductOfficeCountiesLasted
Dec 25, 4:05 AM ESTGale WarningCLE30 hr

Nearby

Winter Weather Advisories in Ohio, 2020Every winter weather advisory in 2020

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.