Alert archive / Ohio / Frost Advisories in 2021
Frost Advisory 7, NWS Cleveland, OH
NWS Cleveland, OH issued this frost advisory at May 11, 2021, 12:18 PM EDT for 22 counties in Ohio. It took effect at May 12, 2021, 2:00 AM EDT. It was in force for 6 hr.
The area
The counties it named.
The facts
- Issued
- May 11, 2021, 12:18 PM EDT (16:18 UTC)
- In effect from
- May 12, 2021, 2:00 AM EDT
- Expired
- May 12, 2021, 8:00 AM EDT
- In force
- 6 hr
- Issued by
- NWS Cleveland, OH
All 22 counties
Ashland County, OH, Crawford County, OH, Hancock County, OH, Holmes County, OH, Huron County, OH, Knox County, OH, Lorain County, OH, Lucas County, OH, Mahoning County, OH, Marion County, OH, Medina County, OH, Morrow County, OH, Portage County, OH, Richland County, OH, Sandusky County, OH, Seneca County, OH, Stark County, OH, Summit County, OH, Trumbull County, OH, Wayne County, OH, Wood County, OH, Wyandot County, OH
The radar
The Cleveland radar (KCLE), 64 km from the middle of the area, began a volume at 16:21 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, 4.3 hours before the alert went out and 204 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
- 1116 m above ground
- 0-6 km bulk shear
- 87 kt
- 0-1 km storm-relative helicity
- 52 m²/s²
- 0-3 km storm-relative helicity
- 104 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
135 WWUS71 KCLE 111618 NPWCLE URGENT - WEATHER MESSAGE National Weather Service Cleveland OH 1218 PM EDT Tue May 11 2021 OHZ003-006-008-010-017>023-027>033-036>038-047-120030- /O.NEW.KCLE.FR.Y.0007.210512T0600Z-210512T1200Z/ Lucas-Wood-Sandusky-Lorain-Hancock-Seneca-Huron-Medina-Summit- Portage-Trumbull-Wyandot-Crawford-Richland-Ashland-Wayne-Stark- Mahoning-Marion-Morrow-Holmes-Knox- Including the cities of Toledo, Bowling Green, Perrysburg, Fremont, Bellevue, Clyde, Lorain, Elyria, North Ridgeville, Avon Lake, Findlay, Tiffin, Fostoria, Norwalk, Willard, Brunswick, Medina, Wadsworth, Akron, Kent, Aurora, Streetsboro, Ravenna, Warren, Niles, Upper Sandusky, Carey, Bucyrus, Galion, Crestline, Mansfield, Ashland, Wooster, Orrville, Rittman, Canton, Massillon, Alliance, Youngstown, Boardman, Austintown, Marion, Mount Gilead, Cardington, Millersburg, Killbuck, and Mount Vernon 1218 PM EDT Tue May 11 2021 ...FROST ADVISORY IN EFFECT FROM 2 AM TO 8 AM EDT WEDNESDAY... * WHAT...Temperatures as low as 33 will result in frost formation. * WHERE...Portions of north central, northeast and northwest Ohio. * WHEN...From 2 AM to 8 AM EDT Wednesday. * IMPACTS...Frost could kill sensitive outdoor vegetation if left uncovered. * ADDITIONAL DETAILS...The highest probability for frost in Lucas, Sandusky, and Lorain Counties will be further inland. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ For more information from the National Weather Service visit http://www.weather.gov/cle
4 follow-up statements
929 WWUS71 KCLE 111838 NPWCLE URGENT - WEATHER MESSAGE National Weather Service Cleveland OH 238 PM EDT Tue May 11 2021 OHZ003-006-008-010-017>023-027>033-036>038-047-120245- /O.CON.KCLE.FR.Y.0007.210512T0600Z-210512T1200Z/ Lucas-Wood-Sandusky-Lorain-Hancock-Seneca-Huron-Medina-Summit- Portage-Trumbull-Wyandot-Crawford-Richland-Ashland-Wayne-Stark- Mahoning-Marion-Morrow-Holmes-Knox- Including the cities of Toledo, Bowling Green, Perrysburg, Fremont, Bellevue, Clyde, Lorain, Elyria, North Ridgeville, Avon Lake, Findlay, Tiffin, Fostoria, Norwalk, Willard, Brunswick, Medina, Wadsworth, Akron, Kent, Aurora, Streetsboro, Ravenna, Warren, Niles, Upper Sandusky, Carey, Bucyrus, Galion, Crestline, Mansfield, Ashland, Wooster, Orrville, Rittman, Canton, Massillon, Alliance, Youngstown, Boardman, Austintown, Marion, Mount Gilead, Cardington, Millersburg, Killbuck, and Mount Vernon 238 PM EDT Tue May 11 2021 ...FROST ADVISORY REMAINS IN EFFECT FROM 2 AM TO 8 AM EDT WEDNESDAY... * WHAT...Temperatures as low as 33 will result in frost formation. * WHERE...Portions of north central, northeast and northwest Ohio. * WHEN...From 2 AM to 8 AM EDT Wednesday. * IMPACTS...Frost could kill sensitive outdoor vegetation if left uncovered. * ADDITIONAL DETAILS...The highest probability for frost in Lucas, Sandusky, and Lorain Counties will be further inland. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ For more information from the National Weather Service visit http://www.weather.gov/cle
965 WWUS71 KCLE 120158 NPWCLE URGENT - WEATHER MESSAGE National Weather Service Cleveland OH 958 PM EDT Tue May 11 2021 OHZ003-006-008-010-017>023-027>033-036>038-047-121000- /O.CON.KCLE.FR.Y.0007.210512T0600Z-210512T1200Z/ Lucas-Wood-Sandusky-Lorain-Hancock-Seneca-Huron-Medina-Summit- Portage-Trumbull-Wyandot-Crawford-Richland-Ashland-Wayne-Stark- Mahoning-Marion-Morrow-Holmes-Knox- Including the cities of Toledo, Bowling Green, Perrysburg, Fremont, Bellevue, Clyde, Lorain, Elyria, North Ridgeville, Avon Lake, Findlay, Tiffin, Fostoria, Norwalk, Willard, Brunswick, Medina, Wadsworth, Akron, Kent, Aurora, Streetsboro, Ravenna, Warren, Niles, Upper Sandusky, Carey, Bucyrus, Galion, Crestline, Mansfield, Ashland, Wooster, Orrville, Rittman, Canton, Massillon, Alliance, Youngstown, Boardman, Austintown, Marion, Mount Gilead, Cardington, Millersburg, Killbuck, and Mount Vernon 958 PM EDT Tue May 11 2021 ...FROST ADVISORY REMAINS IN EFFECT FROM 2 AM TO 8 AM EDT WEDNESDAY... * WHAT...Temperatures as low as 34 will result in frost formation. * WHERE...Portions of north central, northeast and northwest Ohio. * WHEN...From 2 AM to 8 AM EDT Wednesday. * IMPACTS...Frost could kill sensitive outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ For more information from the National Weather Service visit http://www.weather.gov/cle
252 WWUS71 KCLE 120957 NPWCLE URGENT - WEATHER MESSAGE National Weather Service Cleveland OH 557 AM EDT Wed May 12 2021 OHZ003-006-008-010-017>023-027>033-036>038-047-121200- /O.CON.KCLE.FR.Y.0007.000000T0000Z-210512T1200Z/ Lucas-Wood-Sandusky-Lorain-Hancock-Seneca-Huron-Medina-Summit- Portage-Trumbull-Wyandot-Crawford-Richland-Ashland-Wayne-Stark- Mahoning-Marion-Morrow-Holmes-Knox- Including the cities of Toledo, Bowling Green, Perrysburg, Fremont, Bellevue, Clyde, Lorain, Elyria, North Ridgeville, Avon Lake, Findlay, Tiffin, Fostoria, Norwalk, Willard, Brunswick, Medina, Wadsworth, Akron, Kent, Aurora, Streetsboro, Ravenna, Warren, Niles, Upper Sandusky, Carey, Bucyrus, Galion, Crestline, Mansfield, Ashland, Wooster, Orrville, Rittman, Canton, Massillon, Alliance, Youngstown, Boardman, Austintown, Marion, Mount Gilead, Cardington, Millersburg, Killbuck, and Mount Vernon 557 AM EDT Wed May 12 2021 ...FROST ADVISORY REMAINS IN EFFECT UNTIL 8 AM EDT THIS MORNING... * WHAT...Temperatures as low as the mid 30s will result in frost formation. * WHERE...Portions of north central, northeast and northwest Ohio. * WHEN...Until 8 AM EDT this morning. * IMPACTS...Frost could kill sensitive outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ For more information from the National Weather Service visit http://www.weather.gov/cle
841 WWUS71 KCLE 121157 NPWCLE URGENT - WEATHER MESSAGE National Weather Service Cleveland OH 757 AM EDT Wed May 12 2021 OHZ003-006-008-010-017>023-027>033-036>038-047-121300- /O.EXP.KCLE.FR.Y.0007.000000T0000Z-210512T1200Z/ Lucas-Wood-Sandusky-Lorain-Hancock-Seneca-Huron-Medina-Summit- Portage-Trumbull-Wyandot-Crawford-Richland-Ashland-Wayne-Stark- Mahoning-Marion-Morrow-Holmes-Knox- Including the cities of Toledo, Bowling Green, Perrysburg, Fremont, Bellevue, Clyde, Lorain, Elyria, North Ridgeville, Avon Lake, Findlay, Tiffin, Fostoria, Norwalk, Willard, Brunswick, Medina, Wadsworth, Akron, Kent, Aurora, Streetsboro, Ravenna, Warren, Niles, Upper Sandusky, Carey, Bucyrus, Galion, Crestline, Mansfield, Ashland, Wooster, Orrville, Rittman, Canton, Massillon, Alliance, Youngstown, Boardman, Austintown, Marion, Mount Gilead, Cardington, Millersburg, Killbuck, and Mount Vernon 757 AM EDT Wed May 12 2021 ...FROST ADVISORY WILL EXPIRE AT 8 AM EDT THIS MORNING... Temperatures are expected to increase this morning and the frost threat is over. Therefore, the advisory will be allowed to expire at 8 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 |
|---|---|---|---|---|
| May 11, 1:53 AM EDT | Areal Flood Warning | CLE | Wyandot | 17 hr |
| May 11, 3:32 AM EDT | Small Craft Advisory | CLE | 24 hr | |
| May 11, 10:45 AM EDT | River Flood Warning | CLE | Seneca | 44 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.