Alert archive / Ohio / Areal Flood Advisories in 2021

Areal Flood Advisory 47, NWS Cleveland, OH

July 12, 2021Cuyahoga County, Lorain County, Ohio

NWS Cleveland, OH issued this areal flood advisory at Jul 12, 2021, 11:20 AM EDT for Cuyahoga County, Lorain County, Ohio. It was in force for 3 hr.

The area

The counties it named.

The facts

Issued
Jul 12, 2021, 11:20 AM EDT (15:20 UTC)
Expired
Jul 12, 2021, 2:30 PM EDT
In force
3 hr
Issued by
NWS Cleveland, OH
Area
Storm-based polygon

Counties Cuyahoga County, OH, Lorain County, OH

The radar

The Cleveland radar (KCLE), 7 km from the middle of the area, began a volume at 15:21 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

Detroit, MI (KDTX), launched 12:00Z, 3.3 hours before the alert went out and 187 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, Detroit, MI at 12:00Z on 2021-07-12Temperature 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, Detroit, MI at 12:00Z on 2021-07-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 13 square meters per square second.193958Sfc1 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
577 m above ground
0-6 km bulk shear
23 kt
0-1 km storm-relative helicity
13 m²/s²
0-3 km storm-relative helicity
73 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this areal flood 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 areal flood advisory went out at Jul 12, 9:48 AM EDT, 1 hour 32 minutes earlier.

Area forecast discussion, Jul 12, 9:48 AM EDT, 1 hour 32 minutes before
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Hazardous weather outlook, Jul 12, 4:42 AM EDT, 6 hours 38 minutes before
Hazardous Weather Outlook
National Weather Service Cleveland OH
442 AM EDT Mon Jul 12 2021

OHZ008>014-018>021-089-PAZ001>003-130845-
Sandusky-Erie-Lorain-Cuyahoga-Lake-Geauga-Ashtabula Inland-Seneca-
Huron-Medina-Summit-Ashtabula Lakeshore-Northern Erie-Southern Erie-
Crawford-
442 AM EDT Mon Jul 12 2021

...FLASH FLOOD WATCH IN EFFECT FROM NOON EDT TODAY THROUGH THIS
EVENING...

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

.DAY ONE...Today and tonight.

Isolated strong to severe storms are possible today with the main
threat being damaging winds. Heavy rainfall is also possible.

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

   Flash Flood Watch.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

Showers and thunderstorms are again possible across the area on
Tuesday. Isolated strong to severe storms with heavy rainfall are
possible, especially during the afternoon and evening hours.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed. Please relay any information about
observed severe weather to the NWS while following all local, state,
and CDC guidelines.

OHZ003-006-007-017-022-023-027>033-036>038-047-130845-
Lucas-Wood-Ottawa-Hancock-Portage-Trumbull-Wyandot-Crawford-Richland-
Ashland-Wayne-Stark-Mahoning-Marion-Morrow-Holmes-Knox-
442 AM EDT Mon Jul 12 2021

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

.DAY ONE...Today and tonight.

Isolated strong to severe storms are possible today with the main
threat being damaging winds. Heavy rainfall is also possible.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

Showers and thunderstorms are again possible across the area on
Tuesday. Isolated strong to severe storms with heavy rainfall are
possible, especially during the afternoon and evening hours.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed. Please relay any information about
observed severe weather to the NWS while following all local, state,
and CDC guidelines.

LEZ061-142>149-162>169-130845-
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-
442 AM EDT Mon Jul 12 2021

This Hazardous Weather Outlook is for Lake Erie.

.DAY ONE...Today and tonight.

Isolated strong to severe storms are possible today with the main
threat being damaging winds.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

Showers and thunderstorms are again possible across the area on
Tuesday. Isolated strong to severe storms are possible, especially
during the afternoon and evening hours.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed. Please relay any information about
observed severe weather to the NWS while following all local, state,
and CDC guidelines.

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 11, 8:39 PM EDTAreal Flood AdvisoryCLEAshland, Richland3 hr
Jul 12, 3:18 AM EDTFlash Flood WatchCLEAshtabula, Cuyahoga, Erie, Geauga, Huron, Lake and 5 more18 hr
Jul 12, 11:59 AM EDTFlash Flood WarningCLELorain, Medina4 hr
Jul 12, 3:41 PM EDTSpecial Weather StatementCLEHuron34 min
Jul 12, 4:07 PM EDTSpecial Weather StatementCLESandusky, Seneca38 min
Jul 12, 4:30 PM EDTFlash Flood WarningCLEAshland, Cuyahoga, Lorain, Medina6 hr
Jul 12, 4:32 PM EDTSpecial Weather StatementCLEMedina28 min
Jul 12, 5:11 PM EDTAreal Flood AdvisoryCLECuyahoga, Geauga, Portage, Summit6 hr
Jul 12, 5:33 PM EDTSpecial Weather StatementCLEStark27 min
Jul 12, 5:34 PM EDTFlash Flood Warning Considerable damage threatCLECuyahoga2 hr
Jul 12, 6:51 PM EDTAreal Flood AdvisoryCLECrawford2 hr

Nearby

Areal Flood Advisories in Ohio, 2021Every areal flood advisory 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.