Alert archive / Ohio / Flash Flood Watches in 2017

Flash Flood Watch 2, NWS Cleveland, OH

July 12, 201728 counties in Ohio; Crawford County, Erie County, Pennsylvania

NWS Cleveland, OH issued this flash flood watch at Jul 12, 2017, 3:18 PM EDT for 28 counties in Ohio; Crawford County, Erie County, Pennsylvania. It took effect at Jul 12, 2017, 8:00 PM EDT. It was in force for 32 hr.

The area

The counties it named.

The facts

Issued
Jul 12, 2017, 3:18 PM EDT (19:18 UTC)
In effect from
Jul 12, 2017, 8:00 PM EDT
Expired
Jul 14, 2017, 3:59 AM EDT
In force
32 hr
Issued by
NWS Cleveland, OH
Flood severity
None
All 30 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, Crawford County, PA, Erie County, PA

The radar

The Cleveland radar (KCLE), 34 km from the middle of the area, began a volume at 19:21 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 (KAGC), launched 12:00Z, 7.3 hours before the alert went out and 189 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, Pittsburgh, PA at 12:00Z on 2017-07-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 501 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Pittsburgh, PA at 12:00Z on 2017-07-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 180 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
501 J/kg
Mixed-layer CIN
-42 J/kg
Mixed-layer LCL
642 m above ground
0-6 km bulk shear
31 kt
0-1 km storm-relative helicity
180 m²/s²
0-3 km storm-relative helicity
184 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.2

Open this sounding in Storm Lab

The text

As transmitted.

314 
WGUS61 KCLE 121918
FFACLE

URGENT - IMMEDIATE BROADCAST REQUESTED
Flood Watch
National Weather Service Cleveland OH
318 PM EDT Wed Jul 12 2017

...Periods of Torrential Rain Expected Tonight through Friday
Morning...

.A very warm and humid airmass is in place across the area.
Thunderstorms will move into the area tonight into Thursday and 
will be capable of producing extremely high rainfall rates.
Thunderstorms may move over the same areas repeatedly. With soils
already saturated from heavy rain earlier this week, flash 
flooding is possible in any areas where excessive rainfall 
occurs.


OHZ003-006>014-017>023-027>033-036>038-047-089-PAZ001>003-130330-
/O.NEW.KCLE.FF.A.0002.170713T0000Z-170714T1500Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Lucas-Wood-Ottawa-Sandusky-Erie-Lorain-Cuyahoga-Lake-Geauga-
Ashtabula Inland-Hancock-Seneca-Huron-Medina-Summit-Portage-
Trumbull-Wyandot-Crawford-Richland-Ashland-Wayne-Stark-Mahoning-
Marion-Morrow-Holmes-Knox-Ashtabula Lakeshore-Northern Erie-
Southern Erie-
Including the cities of Toledo, Bowling Green, Port Clinton, 
Fremont, Sandusky, Lorain, Cleveland, Mentor, Chardon, Jefferson,
Findlay, Tiffin, Norwalk, Medina, Akron, Ravenna, Warren, 
Upper Sandusky, Bucyrus, Mansfield, Ashland, Wooster, Canton, 
Youngstown, Marion, Mount Gilead, Millersburg, Mount Vernon, 
Ashtabula, Erie, Edinboro, and Meadville
318 PM EDT Wed Jul 12 2017

...FLASH FLOOD WATCH IN EFFECT FROM 8 PM EDT THIS EVENING THROUGH
FRIDAY MORNING...

The National Weather Service in Cleveland has issued a

* Flash Flood Watch for portions of Ohio and northwest 
  Pennsylvania, including the following areas, in Ohio, Ashland, 
  Ashtabula Inland, Ashtabula Lakeshore, Crawford, Cuyahoga, 
  Erie, Geauga, Hancock, Holmes, Huron, Knox, Lake, Lorain, 
  Lucas, Mahoning, Marion, Medina, Morrow, Ottawa, Portage, 
  Richland, Sandusky, Seneca, Stark, Summit, Trumbull, Wayne, 
  Wood, and Wyandot. In northwest Pennsylvania, Crawford, 
  Northern Erie, and Southern Erie. 

* From 8 PM EDT this evening through Friday morning

* Thunderstorms producing high rainfall rates will produce
  localized rainfall amounts of 3 to 5 inches. Rain will end with
  the passage of a cold front on Friday morning. 

* Excessive rainfall may lead to flash flooding of streams, low
  lying spots, and poor drainage areas especially in urban and
  hilly locations. Those camping along area streams and rivers 
  should be especially cautious as streams and rivers can rise to 
  dangerous levels very quickly.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Flash Flood Watch is issued when there is a potential for flash
flooding. Flash flooding is a very dangerous situation. Monitor
the forecast and be prepared to take action should Flash Flood
Warnings be issued or if flooding develops.

&&

$$
6 follow-up statements
511 
WGUS61 KCLE 130131
FFACLE

Flood Watch
National Weather Service Cleveland OH
931 PM EDT Wed Jul 12 2017

...Periods of Torrential Rain Expected Tonight through Friday
Morning...

.A very warm and humid airmass is in place across the area.
Thunderstorms will move into the area late tonight into Thursday 
and will be capable of producing extremely high rainfall rates. 
Thunderstorms may move over the same areas repeatedly. With soils 
already saturated from heavy rain earlier this week, flash 
flooding is possible in any areas where excessive rainfall occurs.

OHZ003-006>014-017>023-027>033-036>038-047-089-PAZ001>003-130945-
/O.CON.KCLE.FF.A.0002.000000T0000Z-170714T1500Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Lucas-Wood-Ottawa-Sandusky-Erie-Lorain-Cuyahoga-Lake-Geauga-
Ashtabula Inland-Hancock-Seneca-Huron-Medina-Summit-Portage-
Trumbull-Wyandot-Crawford-Richland-Ashland-Wayne-Stark-Mahoning-
Marion-Morrow-Holmes-Knox-Ashtabula Lakeshore-Northern Erie-
Southern Erie-
Including the cities of Toledo, Bowling Green, Port Clinton, 
Fremont, Sandusky, Lorain, Cleveland, Mentor, Chardon, Jefferson,
Findlay, Tiffin, Norwalk, Medina, Akron, Ravenna, Warren, 
Upper Sandusky, Bucyrus, Mansfield, Ashland, Wooster, Canton, 
Youngstown, Marion, Mount Gilead, Millersburg, Mount Vernon, 
Ashtabula, Erie, Edinboro, and Meadville
931 PM EDT Wed Jul 12 2017

...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH FRIDAY MORNING...

The Flash Flood Watch continues for

* Portions of Ohio and northwest Pennsylvania, including the 
  following areas, in Ohio, Ashland, Ashtabula Inland, Ashtabula 
  Lakeshore, Crawford, Cuyahoga, Erie, Geauga, Hancock, Holmes, 
  Huron, Knox, Lake, Lorain, Lucas, Mahoning, Marion, Medina, 
  Morrow, Ottawa, Portage, Richland, Sandusky, Seneca, Stark, 
  Summit, Trumbull, Wayne, Wood, and Wyandot. In northwest 
  Pennsylvania, Crawford, Northern Erie, and Southern Erie. 

* Through Friday morning

* Thunderstorms producing high rainfall rates will produce 
  localized rainfall amounts of 3 to 5 inches. Rain will end 
  with the passage of a cold front on Friday morning. 

* Excessive rainfall may lead to flash flooding of streams, low 
  lying spots, and poor drainage areas especially in urban and 
  hilly locations. Those camping along area streams and rivers 
  should be especially cautious as streams and rivers can rise 
  to dangerous levels very quickly. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Flash Flood Watch is issued when there is a potential for flash
flooding. Flash flooding is a very dangerous situation. Monitor
the forecast and be prepared to take action should Flash Flood
Warnings be issued or if flooding develops.

&&

$$
540 
WGUS61 KCLE 130821
FFACLE

Flood Watch
National Weather Service Cleveland OH
421 AM EDT Thu Jul 13 2017

...Periods of Torrential Rain Expected Today and Tonight...

.Showers and thunderstorms will move across the forecast area this
morning, then redevelop this afternoon. Some storms will be 
capable of producing extremely high rainfall rates and may train 
over the same areas repeatedly. With soils already saturated from 
heavy rain earlier this week, flash flooding is possible in any 
areas where excessive rainfall occurs.

OHZ003-006>014-017>023-027>033-036>038-047-089-PAZ001>003-131630-
/O.CON.KCLE.FF.A.0002.000000T0000Z-170714T1500Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Lucas-Wood-Ottawa-Sandusky-Erie-Lorain-Cuyahoga-Lake-Geauga-
Ashtabula Inland-Hancock-Seneca-Huron-Medina-Summit-Portage-
Trumbull-Wyandot-Crawford-Richland-Ashland-Wayne-Stark-Mahoning-
Marion-Morrow-Holmes-Knox-Ashtabula Lakeshore-Northern Erie-
Southern Erie-
Including the cities of Toledo, Bowling Green, Port Clinton, 
Fremont, Sandusky, Lorain, Cleveland, Mentor, Chardon, Jefferson,
Findlay, Tiffin, Norwalk, Medina, Akron, Ravenna, Warren, 
Upper Sandusky, Bucyrus, Mansfield, Ashland, Wooster, Canton, 
Youngstown, Marion, Mount Gilead, Millersburg, Mount Vernon, 
Ashtabula, Erie, Edinboro, and Meadville
421 AM EDT Thu Jul 13 2017

...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH FRIDAY MORNING...

The Flash Flood Watch continues for

* Portions of Ohio and northwest Pennsylvania, including the 
  following areas, in Ohio, Ashland, Ashtabula Inland, Ashtabula 
  Lakeshore, Crawford, Cuyahoga, Erie, Geauga, Hancock, Holmes, 
  Huron, Knox, Lake, Lorain, Lucas, Mahoning, Marion, Medina, 
  Morrow, Ottawa, Portage, Richland, Sandusky, Seneca, Stark, 
  Summit, Trumbull, Wayne, Wood, and Wyandot. In northwest 
  Pennsylvania, Crawford, Northern Erie, and Southern Erie. 

* Through Friday morning

* Thunderstorms producing high rainfall rates will produce
  localized rainfall amounts of 3 to 5 inches by Friday morning. 
  Rain will end with the passage of a cold front on Friday 
  morning. 

* Excessive rainfall may lead to flash flooding of streams, low 
  lying spots, and poor drainage areas especially in urban and 
  hilly locations. Those camping along area streams and rivers 
  should be especially cautious as streams and rivers can rise 
  to dangerous levels very quickly. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Flash Flood Watch is issued when there is a potential for flash
flooding. Flash flooding is a very dangerous situation. Monitor 
the forecast and be prepared to take action should Flash Flood 
Warnings be issued or if flooding develops.

&&

$$
292 
WGUS61 KCLE 131624
FFACLE

Flood Watch
National Weather Service Cleveland OH
1224 PM EDT Thu Jul 13 2017

.Scattered showers and thunderstorms will move across the 
forecast this afternoon. SOme redevelopment is possible,
especially near and south of a line from Findlay to Warren. Some 
storms will be capable of producing extremely high rainfall rates.
With soils already saturated from heavy rain earlier this week, 
flash flooding is possible in any areas where excessive rainfall 
occurs.

OHZ003-006>014-017>023-027>033-036>038-047-089-PAZ001>003-140030-
/O.CON.KCLE.FF.A.0002.000000T0000Z-170714T1500Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Lucas-Wood-Ottawa-Sandusky-Erie-Lorain-Cuyahoga-Lake-Geauga-
Ashtabula Inland-Hancock-Seneca-Huron-Medina-Summit-Portage-
Trumbull-Wyandot-Crawford-Richland-Ashland-Wayne-Stark-Mahoning-
Marion-Morrow-Holmes-Knox-Ashtabula Lakeshore-Northern Erie-
Southern Erie-
Including the cities of Toledo, Bowling Green, Port Clinton, 
Fremont, Sandusky, Lorain, Cleveland, Mentor, Chardon, Jefferson,
Findlay, Tiffin, Norwalk, Medina, Akron, Ravenna, Warren, 
Upper Sandusky, Bucyrus, Mansfield, Ashland, Wooster, Canton, 
Youngstown, Marion, Mount Gilead, Millersburg, Mount Vernon, 
Ashtabula, Erie, Edinboro, and Meadville
1224 PM EDT Thu Jul 13 2017

...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH FRIDAY MORNING...

The Flash Flood Watch continues for

* Portions of Ohio and northwest Pennsylvania, including the 
  following areas, in Ohio, Ashland, Ashtabula Inland, Ashtabula 
  Lakeshore, Crawford, Cuyahoga, Erie, Geauga, Hancock, Holmes, 
  Huron, Knox, Lake, Lorain, Lucas, Mahoning, Marion, Medina, 
  Morrow, Ottawa, Portage, Richland, Sandusky, Seneca, Stark, 
  Summit, Trumbull, Wayne, Wood, and Wyandot. In northwest 
  Pennsylvania, Crawford, Northern Erie, and Southern Erie. 

* Through Friday morning

* Thunderstorms may produce high rainfall rates with localized 
  rainfall amounts of 1 to 3 inches by Friday morning. Rain will 
  end with the passage of a cold front on Friday morning. 

* Excessive rainfall may lead to flash flooding of streams, low 
  lying spots, and poor drainage areas especially in urban and 
  hilly locations. Those camping along area streams and rivers 
  should be especially cautious as streams and rivers can rise 
  to dangerous levels very quickly. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Flash Flood Watch is issued when there is a potential for flash
flooding. Flash flooding is a very dangerous situation. Monitor
the forecast and be prepared to take action should Flash Flood
Warnings be issued or if flooding develops.

&&

$$
555 
WGUS61 KCLE 131920
FFACLE

Flood Watch
National Weather Service Cleveland OH
320 PM EDT Thu Jul 13 2017

.Scattered showers and thunderstorms will move across the
region this evening. The better chances will be near and south of
a line from Marion to Warren and across northwest Pennsylvania. 
Some storms will be capable of producing extremely high rainfall 
rates. Since soils are already saturated from heavy rain earlier 
this week, flash flooding is possible where excessive rainfall 
occurs.

OHZ003-006>011-017>019-027-028-132030-
/O.CAN.KCLE.FF.A.0002.000000T0000Z-170714T1500Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Lucas-Wood-Ottawa-Sandusky-Erie-Lorain-Cuyahoga-Hancock-Seneca-
Huron-Wyandot-Crawford-
Including the cities of Toledo, Bowling Green, Port Clinton, 
Fremont, Sandusky, Lorain, Cleveland, Findlay, Tiffin, Norwalk, 
Upper Sandusky, and Bucyrus
320 PM EDT Thu Jul 13 2017

...FLASH FLOOD WATCH IS CANCELLED...

The Flash Flood Watch for portions of north central Ohio,
northeast Ohio, and northwest Ohio has been cancelled. The threat
for heavy rainfall has ended. 

$$

OHZ012>014-020>023-029>033-036>038-047-089-PAZ001>003-140330-
/O.CON.KCLE.FF.A.0002.000000T0000Z-170714T1500Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Lake-Geauga-Ashtabula Inland-Medina-Summit-Portage-Trumbull-
Richland-Ashland-Wayne-Stark-Mahoning-Marion-Morrow-Holmes-Knox-
Ashtabula Lakeshore-Northern Erie-Southern Erie-Crawford-
Including the cities of Mentor, Chardon, Jefferson, Medina, 
Akron, Ravenna, Warren, Mansfield, Ashland, Wooster, Canton, 
Youngstown, Marion, Mount Gilead, Millersburg, Mount Vernon, 
Ashtabula, Erie, Edinboro, and Meadville
320 PM EDT Thu Jul 13 2017

...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH FRIDAY MORNING...

The Flash Flood Watch continues for

* Portions of Ohio and northwest Pennsylvania, including the 
  following areas, in Ohio, Ashland, Ashtabula Inland, Ashtabula 
  Lakeshore, Geauga, Holmes, Knox, Lake, Mahoning, Marion, 
  Medina, Morrow, Portage, Richland, Stark, Summit, Trumbull, 
  and Wayne. In northwest Pennsylvania, Crawford, Northern Erie, 
  and Southern Erie. 

* Through Friday morning

* Thunderstorms may produce high rainfall rates with localized
  rainfall amounts of 1 to 3 inches through Friday morning. Rain 
  will end with the passage of a cold front on Friday morning. 

* Excessive rainfall may lead to flash flooding of streams, low 
  lying spots, and poor drainage areas especially in urban and 
  hilly locations. Those camping along area streams and rivers 
  should be especially cautious as streams and rivers can rise 
  to dangerous levels very quickly. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Flash Flood Watch is issued when there is a potential for flash
flooding. Flash flooding is a very dangerous situation. Monitor
the forecast and be prepared to take action should Flash Flood
Warnings be issued or if flooding develops.

&&

$$
533 
WGUS61 KCLE 140147
FFACLE

Flood Watch
National Weather Service Cleveland OH
947 PM EDT Thu Jul 13 2017

.A cold front to our northwest will move into the area overnight.
With soils are already saturated from heavy rain earlier this 
week, any thunderstorms that develop along or ahead of the front
would be capable of producing locally heavy rainfall which could
possibly result in flash flooding.

OHZ012>014-020>023-029>033-036>038-047-089-PAZ001>003-141000-
/O.CON.KCLE.FF.A.0002.000000T0000Z-170714T1500Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Lake-Geauga-Ashtabula Inland-Medina-Summit-Portage-Trumbull-
Richland-Ashland-Wayne-Stark-Mahoning-Marion-Morrow-Holmes-Knox-
Ashtabula Lakeshore-Northern Erie-Southern Erie-Crawford-
Including the cities of Mentor, Chardon, Jefferson, Medina, 
Akron, Ravenna, Warren, Mansfield, Ashland, Wooster, Canton, 
Youngstown, Marion, Mount Gilead, Millersburg, Mount Vernon, 
Ashtabula, Erie, Edinboro, and Meadville
947 PM EDT Thu Jul 13 2017

...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH FRIDAY MORNING...

The Flash Flood Watch continues for

* Portions of Ohio and northwest Pennsylvania, including the 
  following areas, in Ohio, Ashland, Ashtabula Inland, Ashtabula 
  Lakeshore, Geauga, Holmes, Knox, Lake, Mahoning, Marion, 
  Medina, Morrow, Portage, Richland, Stark, Summit, Trumbull, 
  and Wayne. In northwest Pennsylvania, Crawford, Northern Erie, 
  and Southern Erie. 

* Through Friday morning

* Scattered thunderstorms may produce local rainfall amounts of 1
  to 3 inches through Friday morning. Rain will end with the 
  passage of a cold front on Friday morning. 

* Excessive rainfall may lead to flash flooding of streams, low 
  lying spots, and poor drainage areas especially in urban and 
  hilly locations. Those camping along area streams and rivers 
  should be especially cautious as streams and rivers can rise 
  to dangerous levels very quickly. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Flash Flood Watch is issued when there is a potential for flash
flooding. Flash flooding is a very dangerous situation. Monitor
the forecast and be prepared to take action should Flash Flood
Warnings be issued or if flooding develops.

&&

$$
616 
WGUS61 KCLE 140759
FFACLE

Flood Watch
National Weather Service Cleveland OH
359 AM EDT Fri Jul 14 2017

...FLASH FLOOD WATCH IS CANCELLED...

OHZ012>014-020>023-029>033-036>038-047-089-PAZ001>003-140900-
/O.CAN.KCLE.FF.A.0002.000000T0000Z-170714T1500Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Lake-Geauga-Ashtabula Inland-Medina-Summit-Portage-Trumbull-
Richland-Ashland-Wayne-Stark-Mahoning-Marion-Morrow-Holmes-Knox-
Ashtabula Lakeshore-Northern Erie-Southern Erie-Crawford-
Including the cities of Mentor, Chardon, Jefferson, Medina, 
Akron, Ravenna, Warren, Mansfield, Ashland, Wooster, Canton, 
Youngstown, Marion, Mount Gilead, Millersburg, Mount Vernon, 
Ashtabula, Erie, Edinboro, and Meadville
359 AM EDT Fri Jul 14 2017

...FLASH FLOOD WATCH IS CANCELLED...

The Flash Flood Watch for portions of Ohio and northwest
Pennsylvania has been cancelled. Scattered showers and
thunderstorms remain possible this morning, mainly along and south
of a line from Mount Vernon to Canton to Warren. However,
additional rainfall is not expected to be sufficient enough to
produce flash flooding. Much drier is already starting to work
into the region and will bring an end to shower activity by
midday. 

$$

Nearby

Flash Flood Watches in Ohio, 2017Flash Flood Watches in Pennsylvania, 2017Every flash flood watch in 2017

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.