Alert archive / Ohio / Areal Flood Advisories in 2021

Areal Flood Advisory 63, NWS Cleveland, OH

July 17, 20214 counties in Ohio

NWS Cleveland, OH issued this areal flood advisory at Jul 17, 2021, 4:34 AM EDT for 4 counties in Ohio. It was in force for 7 hr.

The area

The counties it named.

The facts

Issued: Jul 17, 2021, 4:34 AM EDT (08:34 UTC)
Expired: Jul 17, 2021, 11:30 AM EDT
In force: 7 hr
Issued by: NWS Cleveland, OH
Area: Storm-based polygon

Counties Mahoning County, OH, Portage County, OH, Stark County, OH, Trumbull County, OH

The radar

The Cleveland radar (KCLE), 79 km from the middle of the area, began a volume at 08:36 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, 8.6 hours before the alert went out and 108 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 490 J/kg
Mixed-layer CIN: -45 J/kg
Mixed-layer LCL: 998 m above ground
0-6 km bulk shear: 23 kt
0-1 km storm-relative helicity: 134 m²/s²
0-3 km storm-relative helicity: 118 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 3.4

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 17, 2:02 AM EDT, 2 hours 32 minutes earlier.

Area forecast discussion, Jul 17, 2:02 AM EDT, 2 hours 32 minutes before

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Hazardous weather outlook, Jul 17, 4:09 AM EDT, 25 minutes before

Hazardous Weather Outlook
National Weather Service Cleveland OH
409 AM EDT Sat Jul 17 2021

OHZ009-180815-
Erie-
409 AM EDT Sat Jul 17 2021

...FLASH FLOOD WATCH IN EFFECT UNTIL 2 PM EDT THIS AFTERNOON...
...BEACH HAZARDS STATEMENT IN EFFECT FROM 11 AM EDT THIS MORNING
THROUGH THIS EVENING...

This Hazardous Weather Outlook is for north central 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.

   Flash Flood Watch.
   Beach Hazards Statement.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

OHZ003-006-008-017>019-027-028-036-180815-
Lucas-Wood-Sandusky-Hancock-Seneca-Huron-Wyandot-Crawford-Marion-
409 AM EDT Sat Jul 17 2021

...FLASH FLOOD WATCH IN EFFECT UNTIL 2 PM EDT THIS AFTERNOON...

This Hazardous Weather Outlook is for north central Ohio and
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.

   Flash Flood Watch.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

OHZ013-014-020>023-029>033-037-038-047-PAZ002-003-180815-
Geauga-Ashtabula Inland-Medina-Summit-Portage-Trumbull-Richland-
Ashland-Wayne-Stark-Mahoning-Morrow-Holmes-Knox-Southern Erie-
Crawford-
409 AM EDT Sat Jul 17 2021

...FLASH FLOOD WATCH IN EFFECT THROUGH THIS EVENING...

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

   Flash Flood Watch.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

OHZ012-089-PAZ001-180815-
Lake-Ashtabula Lakeshore-Northern Erie-
409 AM EDT Sat Jul 17 2021

...FLASH FLOOD WATCH IN EFFECT THROUGH THIS EVENING...
...BEACH HAZARDS STATEMENT IN EFFECT FROM 11 AM EDT THIS MORNING
THROUGH LATE TONIGHT...

This Hazardous Weather Outlook is for northeast Ohio and 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.

   Flash Flood Watch.
   Beach Hazards Statement.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

OHZ010-011-180815-
Lorain-Cuyahoga-
409 AM EDT Sat Jul 17 2021

...FLASH FLOOD WATCH IN EFFECT THROUGH THIS EVENING...
...BEACH HAZARDS STATEMENT IN EFFECT FROM 11 AM EDT THIS MORNING
THROUGH 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.

   Flash Flood Watch.
   Beach Hazards Statement.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

LEZ061-142>149-162>169-180815-
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-
409 AM EDT Sat Jul 17 2021

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...Sunday through Friday.

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

OHZ007-180815-
Ottawa-
409 AM EDT Sat Jul 17 2021

...FLASH FLOOD WATCH IN EFFECT UNTIL 2 PM EDT THIS AFTERNOON...

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.

   Flash Flood Watch.

There is also a moderate swim risk along the Lake Erie shore through
sunset this evening.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

In the hours before

Local storm report, Jul 16, 11:21 PM EDT, 5 hours 13 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CLEVELAND OH
1121 PM EDT FRI JUL 16 2021

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

1100 PM     FLASH FLOOD      3 SW SPENCER            41.07N 82.15W
07/16/2021                   MEDINA             OH   911 CALL CENTER

            SIGNIFICANT FLOWING WATER OVER NEW LONDON
            EASTERN RD NEAR BRANDON LANE.

&&

PS

Local storm report, Jul 16, 11:22 PM EDT, 5 hours 12 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CLEVELAND OH
1122 PM EDT FRI JUL 16 2021

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

1100 PM     FLASH FLOOD      4 NNW WEST SALEM        41.03N 82.15W
07/16/2021                   MEDINA             OH   911 CALL CENTER

            CULVERT WASHED OUT NEAR CAMP RD AND
            GREENWICH RD.

&&

PS

Local storm report, Jul 16, 11:25 PM EDT, 5 hours 9 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CLEVELAND OH
1125 PM EDT FRI JUL 16 2021

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

1100 PM     FLOOD            3 E SPENCER             41.10N 82.07W
07/16/2021                   MEDINA             OH   911 CALL CENTER

            MULTIPLE FLOODED ROADS, ESPECIALLY IN
            CHATHAM AND SPENCER TOWNSHIPS.

&&

PS

Local storm report, Jul 16, 11:26 PM EDT, 5 hours 8 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CLEVELAND OH
1126 PM EDT FRI JUL 16 2021

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

1122 PM     FLOOD            4 W SAVANNAH            40.97N 82.43W
07/16/2021                   RICHLAND           OH   911 CALL CENTER

            SEVERAL ROADS CLOSED DUE TO HIGH WATER
            ACROSS THE NORTHERN PART OF THE COUNTY THIS
            EVENING, INCLUDING CLEAR CREEK RD FROM TOWN
            LINE RD TO THE ASHLAND COUNTY LINE.

&&

AM

Local storm report, Jul 16, 11:35 PM EDT, 4 hours 59 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CLEVELAND OH
1135 PM EDT FRI JUL 16 2021

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

1130 PM     FLASH FLOOD      6 N POLK                41.03N 82.22W
07/16/2021                   ASHLAND            OH   911 CALL CENTER

            3-3.5 FT OF FLOWING WATER OVER MULTIPLE
            ROADWAYS IN SULLIVAN TOWNSHIP. MULTIPLE
            ROADS ARE IMPASSABLE WITH SEVERAL RESIDENTS
            UNABLE TO LEAVE THEIR HOMES.

&&

PS

Special weather statement, Jul 17, 12:37 AM EDT, 3 hours 57 minutes before

Special Weather Statement
National Weather Service Cleveland OH
1237 AM EDT Sat Jul 17 2021

OHZ037-047-170515-
Morrow-Knox-
1237 AM EDT Sat Jul 17 2021

...A LINE OF STRONG THUNDERSTORMS WILL AFFECT SOUTHEASTERN MORROW AND
KNOX COUNTIES...

At 1236 AM EDT, radar indicated strong thunderstorms were located
along a line extending from 6 miles north of Sunbury to near Mount
Vernon to 7 miles northwest of Frazeysburg. Movement was northeast at
45 mph.

Winds in excess of 40 mph are possible with these storms.

Locations impacted include...
Mount Vernon, Fredericktown, Gambier, Utica, Centerburg, Danville,
Chesterville, Sparta, Waterford, Martinsburg, Gann, North Liberty and
Bladensburg.

If outdoors, consider seeking shelter inside a building.

Torrential rainfall is also occurring with these storms, and may
cause localized flooding. Do not drive your vehicle through flooded
roadways.

LAT...LON 4024 8246 4027 8248 4026 8253 4028 8275
      4035 8275 4036 8285 4055 8264 4055 8235
      4057 8218 4024 8220
TIME...MOT...LOC 0436Z 228DEG 38KT 4033 8282 4036 8251 4021 8221

Maines

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 16, 8:10 PM EDT	Flash Flood Warning	CLE	Medina	5 hr
Jul 16, 8:16 PM EDT	Areal Flood Advisory	CLE	Cuyahoga, Lorain, Medina, Summit	4 hr
Jul 16, 9:46 PM EDT	Flash Flood Warning	CLE	Cuyahoga	3 hr
Jul 16, 10:09 PM EDT	Areal Flood Advisory	CLE	Cuyahoga, Geauga	4 hr
Jul 17, 12:37 AM EDT	Special Weather Statement	CLE	Knox	38 min
Jul 17, 2:05 AM EDT	Areal Flood Advisory	CLE	Medina, Summit, Wayne	6 hr
Jul 17, 2:31 AM EDT	Areal Flood Advisory	CLE	Hancock, Ottawa, Sandusky, Seneca, Wood	6 hr
Jul 17, 3:16 AM EDT	Areal Flood Advisory	CLE	Ashland, Holmes, Knox, Wayne	6 hr
Jul 17, 3:21 AM EDT	River Flood Warning	CLE	Trumbull	47 hr
Jul 17, 4:47 AM EDT	Areal Flood Advisory	CLE	Erie	3 hr
Jul 17, 6:00 AM EDT	River Flood Warning	CLE	Lorain	58 hr
Jul 17, 6:09 AM EDT	Areal Flood Advisory	CLE	Ashtabula	6 hr
Jul 17, 8:11 AM EDT	River Flood Warning	CLE	Cuyahoga	21 hr
Jul 17, 8:25 AM EDT	Areal Flood Advisory	CLE	Ashland, Crawford, Huron, Richland, Wyandot	3 hr
Jul 17, 8:33 AM EDT	Areal Flood Advisory	CLE	Cuyahoga, Lorain, Medina, Summit	10 hr
Jul 17, 10:13 AM EDT	Areal Flood Warning	CLE	Crawford	10 hr
Jul 17, 10:20 AM EDT	Areal Flood Advisory	CLE	Geauga, Portage	5 hr
Jul 17, 10:58 AM EDT	Areal Flood Warning	CLE	Ashland, Crawford, Huron, Lorain, Medina, Richland	9 hr
Jul 17, 11:46 AM EDT	River Flood Warning	CLE	Erie	26 hr
Jul 17, 12:01 PM EDT	Areal Flood Advisory	CLE	Medina, Wayne	5 hr
Jul 17, 12:16 PM EDT	Areal Flood Advisory	CLE	Ashtabula, Trumbull	6 hr
Jul 17, 1:06 PM EDT	Flash Flood Warning	CLE	Mahoning	4 hr
Jul 17, 2:54 PM EDT	Areal Flood Warning	CLE	Stark	4 hr
Jul 17, 3:20 PM EDT	River Flood Warning	CLE	Sandusky, Wood	59 hr

Nearby

Areal Flood Advisories in Ohio, 2021 Every 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.