Alert archive / Ohio / Heat Advisories in 2026
Heat Advisory 2, NWS Cleveland, OH
NWS Cleveland, OH issued this heat advisory at Jun 11, 2026, 2:27 AM EDT for 28 counties in Ohio. It took effect at Jun 11, 2026, 12:00 PM EDT. It was in force for 3 hr.
The area
The counties it named.
The facts
- Issued
- Jun 11, 2026, 2:27 AM EDT (06:27 UTC)
- In effect from
- Jun 11, 2026, 12:00 PM EDT
- Expired
- Jun 11, 2026, 2:59 PM EDT
- In force
- 3 hr
- Issued by
- NWS Cleveland, OH
All 28 counties
Ashland County, OH, Ashtabula County, OH, Crawford County, OH, Cuyahoga County, OH, Erie County, OH, Geauga County, OH, Hancock County, OH, Holmes County, OH, Huron County, OH, Knox County, OH, Lake County, OH, Lorain County, OH, Lucas County, OH, Mahoning County, OH, Marion County, OH, Medina County, OH, Morrow County, OH, Ottawa 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), 46 km from the middle of the area, began a volume at 06:27 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 00:00Z, 6.5 hours before the alert went out and 198 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
- 2149 J/kg
- Mixed-layer CIN
- -3 J/kg
- Mixed-layer LCL
- 1003 m above ground
- 0-6 km bulk shear
- 21 kt
- 0-1 km storm-relative helicity
- 94 m²/s²
- 0-3 km storm-relative helicity
- 185 m²/s²
- Significant tornado parameter
- 1.2
- Supercell composite
- 9.5
What forecasters said that day
The local office's own words before this heat 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 heat advisory went out at Jun 11, 2:17 AM EDT, 10 minutes earlier.
Area forecast discussion, Jun 11, 2:17 AM EDT, 10 minutes before
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</html>Hazardous weather outlook, Jun 10, 3:54 AM EDT, 22 hours 33 minutes before
Hazardous Weather Outlook National Weather Service Cleveland OH 354 AM EDT Wed Jun 10 2026 OHZ009>011-019-020-028>030-036-037-047-110800- Erie-Lorain-Cuyahoga-Huron-Medina-Crawford-Richland-Ashland-Marion- Morrow-Knox- 354 AM EDT Wed Jun 10 2026 ...HEAT ADVISORY IN EFFECT FROM NOON TODAY TO 8 PM EDT THIS EVENING... 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. Heat Advisory. There is a Marginal Risk (Level 1 of 5) for severe weather during the afternoon and evening hours on today. The primary hazards will be damaging wind gusts and large hail. .DAYS TWO THROUGH SEVEN...Thursday through Tuesday. There is a Marginal Risk (Level 1 of 5) for severe weather on Thursday and Friday. The primary hazards will be damaging wind gusts and large hail. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. OHZ012>014-021>023-031>033-038-089-110800- Lake-Geauga-Ashtabula Inland-Summit-Portage-Trumbull-Wayne-Stark- Mahoning-Holmes-Ashtabula Lakeshore- 354 AM EDT Wed Jun 10 2026 This Hazardous Weather Outlook is for northeast Ohio. .DAY ONE...Today and tonight. There is a Marginal Risk (Level 1 of 5) for severe weather during the afternoon and evening hours on today. The primary hazards will be damaging wind gusts and large hail. .DAYS TWO THROUGH SEVEN...Thursday through Tuesday. There is a Marginal Risk (Level 1 of 5) for severe weather on Thursday and Friday. The primary hazards will be damaging wind gusts and large hail. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. PAZ001>003-110800- Northern Erie-Southern Erie-Crawford- 354 AM EDT Wed Jun 10 2026 This Hazardous Weather Outlook is for northwest Pennsylvania. .DAY ONE...Today and tonight. There is a Marginal Risk (Level 1 of 5) for severe weather during the afternoon and evening hours on today. The primary hazards will be damaging wind gusts and large hail. .DAYS TWO THROUGH SEVEN...Thursday through Tuesday. There is a Marginal Risk (Level 1 of 5) for severe weather on Thursday and a Slight Risk (Level 2 of 5) for severe weather on Friday. The primary hazards will be damaging wind gusts and large hail. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. LEZ061-142>149-162>169-110800- Ripley to Buffalo NY extending from 5NM off shoreline to US- Canadian border-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- Willowick to Geneva-on-the Lake OH-Geneva-on-the-Lake to Conneaut OH- Conneaut OH to Ripley NY- 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-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- 354 AM EDT Wed Jun 10 2026 This Hazardous Weather Outlook is for Lake Erie. .DAY ONE...Today and tonight. There is a Marginal Risk (Level 1 of 5) for severe weather during the afternoon and evening hours on today. The primary hazards will be damaging wind gusts and large hail. .DAYS TWO THROUGH SEVEN...Thursday through Tuesday. There is a Marginal Risk (Level 1 of 5) for severe weather on Thursday and Friday for most of Lake Erie. There is a Slight Risk (Level 2 of 5) for severe weather on Thursday across the western basin. The primary hazards will be damaging wind gusts and large hail. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. OHZ003-006>008-017-018-027-110800- Lucas-Wood-Ottawa-Sandusky-Hancock-Seneca-Wyandot- 354 AM EDT Wed Jun 10 2026 ...HEAT ADVISORY IN EFFECT FROM NOON TODAY TO 8 PM EDT THIS EVENING... This Hazardous Weather Outlook is for northwest 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. Heat Advisory. There is a Marginal Risk (Level 1 of 5) for severe weather during the afternoon and evening hours on today. The primary hazards will be damaging wind gusts and large hail. .DAYS TWO THROUGH SEVEN...Thursday through Tuesday. There is a Slight Risk (Level 2 of 5) for severe weather on Thursday. The primary hazards will be damaging wind gusts and large hail. .SPOTTER INFORMATION STATEMENT... Spotter activation may be needed. Please relay any information about observed severe weather to the NWS.
In the hours before
Local storm report, Jun 10, 11:48 PM EDT, 2 hours 39 minutes before
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</html>Local storm report, Jun 10, 11:50 PM EDT, 2 hours 37 minutes before
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</html>Local storm report, Jun 10, 11:53 PM EDT, 2 hours 34 minutes before
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</html>Local storm report, Jun 10, 11:57 PM EDT, 2 hours 30 minutes before
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</html>The office that day
Everything else NWS Cleveland, OH issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 10, 8:13 PM EDT | Severe Thunderstorm Warning | CLE | Erie, Huron, Lorain, Medina | 47 min |
| Jun 10, 8:28 PM EDT | Special Weather Statement | CLE | Summit | 47 min |
| Jun 10, 8:37 PM EDT | Severe Thunderstorm Warning | CLE | Portage, Stark, Summit, Wayne | 38 min |
| Jun 10, 8:43 PM EDT | Areal Flood Advisory | CLE | Summit | 11 min |
| Jun 10, 8:50 PM EDT | Severe Thunderstorm Warning | CLE | Cuyahoga, Lorain, Medina, Summit | 40 min |
| Jun 10, 8:54 PM EDT | Flash Flood Warning | CLE | Summit | 3 hr |
| Jun 10, 8:56 PM EDT | Special Marine Warning | CLE | 94 min | |
| Jun 10, 9:06 PM EDT | Severe Thunderstorm Warning | CLE | Cuyahoga, Geauga, Lake | 39 min |
| Jun 10, 9:15 PM EDT | Special Weather Statement | CLE | Stark | 60 min |
| Jun 10, 9:24 PM EDT | Areal Flood Advisory | CLE | Lorain | 3 hr |
| Jun 10, 9:41 PM EDT | Severe Thunderstorm Warning | CLE | Ashtabula, Geauga, Lake | 49 min |
| Jun 10, 10:01 PM EDT | Special Marine Warning | CLE | 59 min | |
| Jun 10, 10:11 PM EDT | Severe Thunderstorm Warning | CLE | Ashtabula | 79 min |
| Jun 10, 10:17 PM EDT | Special Weather Statement | CLE | Summit | 43 min |
| Jun 11, 12:08 PM EDT | Special Marine Warning | CLE | 97 min | |
| Jun 11, 3:52 PM EDT | Small Craft Advisory | CLE | 22 hr | |
| Jun 11, 3:54 PM EDT | Beach Hazards Statement | CLE | Ashtabula, Cuyahoga, Erie, Lake, Lorain, Ottawa | 22 hr |
| Jun 10, 10:54 PM EDT | Special Weather Statement | CLE | Crawford | 36 min |
| Jun 11, 1:24 PM EDT | Special Weather Statement | CLE | Crawford, Erie | 51 min |
| Jun 11, 2:04 PM EDT | Special Weather Statement | CLE | Crawford | 56 min |
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.