Alert archive / Ohio / Frost Advisories in 2021
Frost Advisory 3, NWS Cleveland, OH
NWS Cleveland, OH issued this frost advisory at Apr 30, 2021, 2:55 PM EDT for 17 counties in Ohio. It took effect at May 1, 2021, 1:00 AM EDT. It was in force for 7 hr.
The area
The counties it named.
The facts
- Issued
- Apr 30, 2021, 2:55 PM EDT (18:55 UTC)
- In effect from
- May 1, 2021, 1:00 AM EDT
- Expired
- May 1, 2021, 8:00 AM EDT
- In force
- 7 hr
- Issued by
- NWS Cleveland, OH
Counties Crawford County, OH, Cuyahoga County, OH, Erie County, OH, Geauga County, OH, Hancock County, OH, Huron County, OH, Knox County, OH, Lorain County, OH, Lucas County, OH, Marion County, OH, Morrow County, OH, Ottawa County, OH, Richland County, OH, Sandusky County, OH, Seneca County, OH, Wood County, OH, Wyandot County, OH
The radar
The Cleveland radar (KCLE), 84 km from the middle of the area, began a volume at 18:56 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
Detroit, MI (KDTX), launched 12:00Z, 6.9 hours before the alert went out and 186 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
- 812 m above ground
- 0-6 km bulk shear
- 64 kt
- 0-1 km storm-relative helicity
- -49 m²/s²
- 0-3 km storm-relative helicity
- 30 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
731 WWUS71 KCLE 301855 NPWCLE URGENT - WEATHER MESSAGE National Weather Service Cleveland OH 255 PM EDT Fri Apr 30 2021 OHZ014-020>023-030>033-038-PAZ002-003-010300- /O.UPG.KCLE.FZ.A.0004.210501T0500Z-210501T1200Z/ /O.NEW.KCLE.FZ.W.0004.210501T0500Z-210501T1200Z/ Ashtabula Inland-Medina-Summit-Portage-Trumbull-Ashland-Wayne- Stark-Mahoning-Holmes-Southern Erie-Crawford- Including the cities of Jefferson, Orwell, Andover, Roaming Shores, Brunswick, Medina, Wadsworth, Akron, Kent, Aurora, Streetsboro, Ravenna, Warren, Niles, Ashland, Wooster, Orrville, Rittman, Canton, Massillon, Alliance, Youngstown, Boardman, Austintown, Millersburg, Killbuck, Edinboro, Corry, Union City, Meadville, and Titusville 255 PM EDT Fri Apr 30 2021 ...FREEZE WARNING IN EFFECT FROM 1 AM TO 8 AM EDT SATURDAY... * WHAT...Sub-freezing temperatures around 30 to 32 expected. * WHERE...Portions of northwest Pennsylvania and north central and northeast Ohio. * WHEN...From 1 AM to 8 AM EDT Saturday. * IMPACTS...Frost and freeze conditions will kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. To prevent freezing and possible bursting of outdoor water pipes they should be wrapped, drained, or allowed to drip slowly. Those that have in-ground sprinkler systems should drain them and cover above- ground pipes to protect them from freezing. && $$ OHZ013-029-036-037-047-010300- /O.UPG.KCLE.FZ.A.0004.210501T0500Z-210501T1200Z/ /O.NEW.KCLE.FR.Y.0003.210501T0500Z-210501T1200Z/ Geauga-Richland-Marion-Morrow-Knox- Including the cities of Chardon, South Russell, Bainbridge, Chesterland, Middlefield, Burton, Mansfield, Marion, Mount Gilead, Cardington, and Mount Vernon 255 PM EDT Fri Apr 30 2021 ...FROST ADVISORY IN EFFECT FROM 1 AM TO 8 AM EDT SATURDAY... * WHAT...Temperatures as low as 33 will result in frost formation. * WHERE...Geauga, Richland, Marion, Morrow and Knox Counties. * WHEN...From 1 AM to 8 AM EDT Saturday. * IMPACTS...Frost could kill sensitive outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ OHZ003-006>011-017>019-027-028-010300- /O.NEW.KCLE.FR.Y.0003.210501T0500Z-210501T1200Z/ Lucas-Wood-Ottawa-Sandusky-Erie-Lorain-Cuyahoga-Hancock-Seneca- Huron-Wyandot-Crawford- Including the cities of Toledo, Bowling Green, Perrysburg, Port Clinton, Oak Harbor, Genoa, Fremont, Bellevue, Clyde, Sandusky, Huron, Lorain, Elyria, North Ridgeville, Avon Lake, Cleveland, Findlay, Tiffin, Fostoria, Norwalk, Willard, Upper Sandusky, Carey, Bucyrus, Galion, and Crestline 255 PM EDT Fri Apr 30 2021 ...FROST ADVISORY IN EFFECT FROM 1 AM TO 8 AM EDT SATURDAY... * WHAT...Temperatures as low as 33 will result in frost formation. * WHERE...Portions of north central, northeast and northwest Ohio. * WHEN...From 1 AM to 8 AM EDT Saturday. * IMPACTS...Frost could kill sensitive outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ For more information from the National Weather Service visit http://www.weather.gov/cle
3 follow-up statements
495 WWUS71 KCLE 010144 NPWCLE URGENT - WEATHER MESSAGE National Weather Service Cleveland OH 944 PM EDT Fri Apr 30 2021 OHZ014-020>023-030>033-038-PAZ002-003-010945- /O.CON.KCLE.FZ.W.0004.210501T0500Z-210501T1200Z/ Ashtabula Inland-Medina-Summit-Portage-Trumbull-Ashland-Wayne- Stark-Mahoning-Holmes-Southern Erie-Crawford- Including the cities of Jefferson, Orwell, Andover, Roaming Shores, Brunswick, Medina, Wadsworth, Akron, Kent, Aurora, Streetsboro, Ravenna, Warren, Niles, Ashland, Wooster, Orrville, Rittman, Canton, Massillon, Alliance, Youngstown, Boardman, Austintown, Millersburg, Killbuck, Edinboro, Corry, Union City, Meadville, and Titusville 944 PM EDT Fri Apr 30 2021 ...FREEZE WARNING REMAINS IN EFFECT FROM 1 AM TO 8 AM EDT SATURDAY... * WHAT...Sub-freezing temperatures around 30 to 32 expected. * WHERE...Portions of northwest Pennsylvania and north central and northeast Ohio. * WHEN...From 1 AM to 8 AM EDT Saturday. * IMPACTS...Frost and freeze conditions will kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. To prevent freezing and possible bursting of outdoor water pipes they should be wrapped, drained, or allowed to drip slowly. Those that have in-ground sprinkler systems should drain them and cover above- ground pipes to protect them from freezing. && $$ OHZ003-006>011-013-017>019-027>029-036-037-047-010945- /O.CON.KCLE.FR.Y.0003.210501T0500Z-210501T1200Z/ Lucas-Wood-Ottawa-Sandusky-Erie-Lorain-Cuyahoga-Geauga-Hancock- Seneca-Huron-Wyandot-Crawford-Richland-Marion-Morrow-Knox- Including the cities of Toledo, Bowling Green, Perrysburg, Port Clinton, Oak Harbor, Genoa, Fremont, Bellevue, Clyde, Sandusky, Huron, Lorain, Elyria, North Ridgeville, Avon Lake, Cleveland, Chardon, South Russell, Bainbridge, Chesterland, Middlefield, Burton, Findlay, Tiffin, Fostoria, Norwalk, Willard, Upper Sandusky, Carey, Bucyrus, Galion, Crestline, Mansfield, Marion, Mount Gilead, Cardington, and Mount Vernon 944 PM EDT Fri Apr 30 2021 ...FROST ADVISORY REMAINS IN EFFECT FROM 1 AM TO 8 AM EDT SATURDAY... * WHAT...Temperatures as low as 33 will result in frost formation. * WHERE...Geauga, Richland, Marion, Morrow and Knox Counties. * WHEN...From 1 AM to 8 AM EDT Saturday. * IMPACTS...Frost could kill sensitive outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ For more information from the National Weather Service visit http://www.weather.gov/cle
966 WWUS71 KCLE 010830 NPWCLE URGENT - WEATHER MESSAGE National Weather Service Cleveland OH 430 AM EDT Sat May 1 2021 OHZ014-020>023-030>033-038-PAZ002-003-011200- /O.CON.KCLE.FZ.W.0004.000000T0000Z-210501T1200Z/ Ashtabula Inland-Medina-Summit-Portage-Trumbull-Ashland-Wayne- Stark-Mahoning-Holmes-Southern Erie-Crawford- Including the cities of Jefferson, Orwell, Andover, Roaming Shores, Brunswick, Medina, Wadsworth, Akron, Kent, Aurora, Streetsboro, Ravenna, Warren, Niles, Ashland, Wooster, Orrville, Rittman, Canton, Massillon, Alliance, Youngstown, Boardman, Austintown, Millersburg, Killbuck, Edinboro, Corry, Union City, Meadville, and Titusville 430 AM EDT Sat May 1 2021 ...FREEZE WARNING REMAINS IN EFFECT UNTIL 8 AM EDT THIS MORNING... * WHAT...Sub-freezing temperatures as low as 32. * WHERE...Portions of northwest Pennsylvania and north central and northeast Ohio. * WHEN...Until 8 AM EDT this morning. * IMPACTS...Frost and freeze conditions will kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. To prevent freezing and possible bursting of outdoor water pipes they should be wrapped, drained, or allowed to drip slowly. Those that have in-ground sprinkler systems should drain them and cover above- ground pipes to protect them from freezing. && $$ OHZ003-006>011-013-017>019-027>029-036-037-047-011200- /O.CON.KCLE.FR.Y.0003.000000T0000Z-210501T1200Z/ Lucas-Wood-Ottawa-Sandusky-Erie-Lorain-Cuyahoga-Geauga-Hancock- Seneca-Huron-Wyandot-Crawford-Richland-Marion-Morrow-Knox- Including the cities of Toledo, Bowling Green, Perrysburg, Port Clinton, Oak Harbor, Genoa, Fremont, Bellevue, Clyde, Sandusky, Huron, Lorain, Elyria, North Ridgeville, Avon Lake, Cleveland, Chardon, South Russell, Bainbridge, Chesterland, Middlefield, Burton, Findlay, Tiffin, Fostoria, Norwalk, Willard, Upper Sandusky, Carey, Bucyrus, Galion, Crestline, Mansfield, Marion, Mount Gilead, Cardington, and Mount Vernon 430 AM EDT Sat May 1 2021 ...FROST ADVISORY REMAINS IN EFFECT UNTIL 8 AM EDT THIS MORNING... * WHAT...Temperatures as low as 33 will result in frost formation. * WHERE...Portions of north central, northeast and northwest Ohio. * WHEN...Until 8 AM EDT this morning. * IMPACTS...Frost could kill sensitive outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ For more information from the National Weather Service visit http://www.weather.gov/cle
984 WWUS71 KCLE 011148 NPWCLE URGENT - WEATHER MESSAGE National Weather Service Cleveland OH 748 AM EDT Sat May 1 2021 OHZ014-020>023-030>033-038-PAZ002-003-011300- /O.EXP.KCLE.FZ.W.0004.000000T0000Z-210501T1200Z/ Ashtabula Inland-Medina-Summit-Portage-Trumbull-Ashland-Wayne- Stark-Mahoning-Holmes-Southern Erie-Crawford- Including the cities of Jefferson, Orwell, Andover, Roaming Shores, Brunswick, Medina, Wadsworth, Akron, Kent, Aurora, Streetsboro, Ravenna, Warren, Niles, Ashland, Wooster, Orrville, Rittman, Canton, Massillon, Alliance, Youngstown, Boardman, Austintown, Millersburg, Killbuck, Edinboro, Corry, Union City, Meadville, and Titusville 748 AM EDT Sat May 1 2021 ...FREEZE WARNING WILL EXPIRE AT 8 AM EDT THIS MORNING... Temperatures will warm quickly this morning and any frost should melt completely by 9 AM. $$ OHZ003-006>011-013-017>019-027>029-036-037-047-011300- /O.EXP.KCLE.FR.Y.0003.000000T0000Z-210501T1200Z/ Lucas-Wood-Ottawa-Sandusky-Erie-Lorain-Cuyahoga-Geauga-Hancock- Seneca-Huron-Wyandot-Crawford-Richland-Marion-Morrow-Knox- Including the cities of Toledo, Bowling Green, Perrysburg, Port Clinton, Oak Harbor, Genoa, Fremont, Bellevue, Clyde, Sandusky, Huron, Lorain, Elyria, North Ridgeville, Avon Lake, Cleveland, Chardon, South Russell, Bainbridge, Chesterland, Middlefield, Burton, Findlay, Tiffin, Fostoria, Norwalk, Willard, Upper Sandusky, Carey, Bucyrus, Galion, Crestline, Mansfield, Marion, Mount Gilead, Cardington, and Mount Vernon 748 AM EDT Sat May 1 2021 ...FROST ADVISORY WILL EXPIRE AT 8 AM EDT THIS MORNING... Temperatures will warm quickly this morning and any frost should melt completely by 9 AM. $$ 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.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 30, 8:51 AM EDT | River Flood Warning | CLE | Trumbull | 14 hr |
| Apr 30, 2:55 PM EDT | Freeze Warning | CLE | Ashland, Ashtabula, Holmes, Mahoning, Medina, Portage and 4 more | 17 hr |
Nearby
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.