Alert archive / Ohio / Flash Flood Watches in 2020

Flash Flood Watch 1, NWS Cleveland, OH

March 27, 202028 counties in Ohio; Crawford County, Erie County, Pennsylvania

NWS Cleveland, OH issued this flash flood watch at Mar 27, 2020, 12:07 PM EDT for 28 counties in Ohio; Crawford County, Erie County, Pennsylvania. It took effect at Mar 28, 2020, 12:00 AM EDT. It was in force for 30 hr.

The area

The counties it named.

The facts

Issued
Mar 27, 2020, 12:07 PM EDT (16:07 UTC)
In effect from
Mar 28, 2020, 12:00 AM EDT
Expired
Mar 29, 2020, 5:30 AM EDT
In force
30 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 16:12 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, 4.1 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 2020-03-27Temperature 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, Pittsburgh, PA at 12:00Z on 2020-03-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -6 square meters per square second.1939587897117136156Sfc1 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
722 m above ground
0-6 km bulk shear
84 kt
0-1 km storm-relative helicity
-6 m²/s²
0-3 km storm-relative helicity
150 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

542 
WGUS61 KCLE 271607
FFACLE

URGENT - IMMEDIATE BROADCAST REQUESTED
Flood Watch
National Weather Service Cleveland OH
1207 PM EDT Fri Mar 27 2020

...FLASH FLOODING POTENTIAL TONIGHT ACROSS THE U.S. 30 CORRIDOR WEST 
OF I-71...

.A warm front is expected to lift north into the area tonight. A
line of storms with heavy rain is expected to linger around the
U.S. 30 corridor late tonight and into late Saturday morning. A
series of back building storms are expected to develop along this
boundary bringing multiple rounds of heavy rain through late
morning Saturday. A widespread 1 to 2 inches of rain are likely
along a line from Findlay to Mansfield, with locally higher
amounts of 3 inches or greater.

OHZ017>019-027>030-036-037-047-280015-
/O.NEW.KCLE.FF.A.0001.200328T0400Z-200328T1600Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Hancock-Seneca-Huron-Wyandot-Crawford-Richland-Ashland-Marion-
Morrow-Knox-
Including the cities of Findlay, Tiffin, Norwalk, Upper Sandusky,
Bucyrus, Mansfield, Ashland, Marion, Mount Gilead, 
and Mount Vernon
1207 PM EDT Fri Mar 27 2020

...FLASH FLOOD WATCH IN EFFECT FROM LATE TONIGHT THROUGH SATURDAY
MORNING...

The National Weather Service in Cleveland has issued a

* Flash Flood Watch for portions of north central Ohio and 
  northwest Ohio, including the following areas, in north 
  central Ohio, Ashland, Crawford, Huron, Knox, Marion, Morrow, 
  and Richland. In northwest Ohio, Hancock, Seneca, and Wyandot. 

* From late tonight through Saturday morning

* A stalled line of heavy rain and thunderstorms will develop
  tonight through late Saturday morning near the U.S. 30 corridor,
  and mainly west of Interstate 71. Widespread 1 to 2 inches of
  rain are likely along a line from Findlay to Mansfield with
  locally higher amounts of 3 inches or greater.

* Flash flooding will lead to rapidly rising and swift moving
  water in creeks and low lying areas.

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.

&&

$$
8 follow-up statements
652 
WGUS61 KCLE 271909
FFACLE

URGENT - IMMEDIATE BROADCAST REQUESTED
Flood Watch
National Weather Service Cleveland OH
309 PM EDT Fri Mar 27 2020

...FLASH FLOODING POTENTIAL TONIGHT ACROSS THE U.S. 30 CORRIDOR
WEST OF I-71...

.A warm front is expected to lift north into the area tonight. A
line of storms with heavy rain is expected to linger around the
U.S. 30 corridor late tonight and into late Saturday morning. A
series of back building storms are expected to develop along this
boundary bringing multiple rounds of heavy rain through late
morning Saturday. A widespread 1 to 2 inches of rain are likely
along a line from Findlay to Mansfield, with locally higher
amounts of 3 inches or greater.

OHZ006-008-280315-
/O.EXA.KCLE.FF.A.0001.200328T0400Z-200328T1600Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Wood-Sandusky-
Including the cities of Bowling Green and Fremont
309 PM EDT Fri Mar 27 2020

...FLASH FLOOD WATCH IN EFFECT FROM MIDNIGHT EDT TONIGHT THROUGH
SATURDAY MORNING...

The National Weather Service in Cleveland has expanded the

* Flash Flood Watch to include a portion of northwest Ohio, 
  including the following areas, Sandusky and Wood. 

* From midnight EDT tonight through Saturday morning

* A stalled line of heavy rain and thunderstorms will develop 
  tonight through late Saturday morning near the U.S. 30 
  corridor, and mainly west of Interstate 71. Widespread 1 to 2 
  inches of rain are likely along a line from Findlay to 
  Mansfield with locally higher amounts of 3 inches or greater. 

* Flash flooding will lead to rapidly rising and swift moving 
  water in creeks and low lying areas. 

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.

&&

$$

OHZ017>019-027>030-036-037-047-280315-
/O.CON.KCLE.FF.A.0001.200328T0400Z-200328T1600Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Hancock-Seneca-Huron-Wyandot-Crawford-Richland-Ashland-Marion-
Morrow-Knox-
Including the cities of Findlay, Tiffin, Norwalk, Upper Sandusky,
Bucyrus, Mansfield, Ashland, Marion, Mount Gilead, 
and Mount Vernon
309 PM EDT Fri Mar 27 2020

...FLASH FLOOD WATCH REMAINS IN EFFECT FROM MIDNIGHT EDT TONIGHT
THROUGH SATURDAY MORNING...

The Flash Flood Watch continues for

* Portions of north central Ohio and northwest Ohio, including 
  the following areas, in north central Ohio, Ashland, Crawford, 
  Huron, Knox, Marion, Morrow, and Richland. In northwest Ohio, 
  Hancock, Seneca, and Wyandot. 

* From midnight EDT tonight through Saturday morning

* A stalled line of heavy rain and thunderstorms will develop 
  tonight through late Saturday morning near the U.S. 30 
  corridor, and mainly west of Interstate 71. Widespread 1 to 2 
  inches of rain are likely along a line from Findlay to 
  Mansfield with locally higher amounts of 3 inches or greater. 

* Flash flooding will lead to rapidly rising and swift moving 
  water in creeks and low lying areas. 

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.

&&

$$
939 
WGUS61 KCLE 280310
FFACLE

Flood Watch
National Weather Service Cleveland OH
1110 PM EDT Fri Mar 27 2020

...FLASH FLOODING POTENTIAL TONIGHT ACROSS THE U.S. 30 CORRIDOR
WEST OF I-71...

.A warm front is expected to lift north into the area tonight.
Widespread showers and thunderstorms are expected to move through
the area overnight through late Saturday morning, with a few 
rounds of heavy rain across portions of northwest and north
central Ohio. A widespread 1 to 2 inches of rain are likely along
a line generally from Findlay to Mansfield, with locally higher 
amounts of 3 inches or greater possible.

OHZ006-008-017>019-027>030-036-037-047-281115-
/O.CON.KCLE.FF.A.0001.200328T0400Z-200328T1600Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Wood-Sandusky-Hancock-Seneca-Huron-Wyandot-Crawford-Richland-
Ashland-Marion-Morrow-Knox-
Including the cities of Bowling Green, Fremont, Findlay, Tiffin, 
Norwalk, Upper Sandusky, Bucyrus, Mansfield, Ashland, Marion, 
Mount Gilead, and Mount Vernon
1110 PM EDT Fri Mar 27 2020

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

The Flash Flood Watch continues for

* Portions of north central Ohio and northwest Ohio, including 
  the following areas, in north central Ohio, Ashland, Crawford, 
  Huron, Knox, Marion, Morrow, and Richland. In northwest Ohio, 
  Hancock, Sandusky, Seneca, Wood, and Wyandot. 

* Through Saturday morning

* A few rounds of heavy rain and thunderstorms will develop and
  move through the area tonight through late Saturday morning,
  generally near the U.S. 30 corridor, and mainly west of 
  Interstate 71. Widespread 1 to 2 inches of rain are likely along
  a line from Findlay to Mansfield with locally higher amounts of
  3 inches or greater possible. 

* Flash flooding could lead to rapidly rising and swift moving 
  water in creeks and low lying areas. 

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.

&&

$$
987 
WGUS61 KCLE 280715
FFACLE

Flood Watch
National Weather Service Cleveland OH
315 AM EDT Sat Mar 28 2020

...FLASH FLOODING POTENTIAL CONTINUES ACROSS THE U.S. 30 CORRIDOR
WEST OF I-71...

.A warm front lifting north into the area at this time will
continue to cause widespread showers and thunderstorms through 
late this morning, with a few rounds of heavy rain across 
portions of northwest and north central Ohio. A widespread 1 to 2 
inches of rain is possible along a line generally from Findlay to
Mansfield, with locally higher amounts of 3 inches or greater 
possible.

OHZ006-008-017>019-027>030-036-037-047-281515-
/O.CON.KCLE.FF.A.0001.000000T0000Z-200328T1600Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Wood-Sandusky-Hancock-Seneca-Huron-Wyandot-Crawford-Richland-
Ashland-Marion-Morrow-Knox-
Including the cities of Bowling Green, Fremont, Findlay, Tiffin, 
Norwalk, Upper Sandusky, Bucyrus, Mansfield, Ashland, Marion, 
Mount Gilead, and Mount Vernon
315 AM EDT Sat Mar 28 2020

...FLASH FLOOD WATCH REMAINS IN EFFECT UNTIL NOON EDT TODAY...

The Flash Flood Watch continues for

* Portions of north central Ohio and northwest Ohio, including 
  the following areas, in north central Ohio, Ashland, Crawford, 
  Huron, Knox, Marion, Morrow, and Richland. In northwest Ohio, 
  Hancock, Sandusky, Seneca, Wood, and Wyandot. 

* Until noon EDT today

* A few rounds of heavy rain and thunderstorms will move through
  the area this morning, generally near the U.S. 30 corridor, and
  mainly west of Interstate 71. Widespread 1 to 2 inches of rain
  are possible along a line from Findlay to Mansfield with 
  locally higher amounts of 3 inches or greater possible. 

* Possible flash flooding could lead to rapidly rising and swift 
  moving water in creeks and low lying areas. 

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.

&&

$$
383 
WGUS61 KCLE 281533
FFACLE

URGENT - IMMEDIATE BROADCAST REQUESTED
Flood Watch
National Weather Service Cleveland OH
1133 AM EDT Sat Mar 28 2020

...FLASH FLOODING POSSIBLE THROUGH SUNDAY MORNING ACROSS NORTHERN
OHIO AND NORTHWEST PENNSYLVANIA...

.Multiple rounds of showers and thunderstorms are expected through
tonight as a slow moving warm front lifts north across the area.
This warm front will provide a focus for heavy rainfall which may
be heavy at times and provide a focus for storms to train over the
same areas. Portions of the watch area received an inch of more 
of rainfall over the last 24 hours. Much of this area can expect 
another inch to inch and a half of rain through midday Sunday
which could result in flash flooding.  

OHZ017-027>030-036-037-047-281645-
/O.CAN.KCLE.FF.A.0001.000000T0000Z-200328T1600Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Hancock-Wyandot-Crawford-Richland-Ashland-Marion-Morrow-Knox-
Including the cities of Findlay, Upper Sandusky, Bucyrus, 
Mansfield, Ashland, Marion, Mount Gilead, and Mount Vernon
1133 AM EDT Sat Mar 28 2020

...FLASH FLOOD WATCH IS CANCELLED...

The Flash Flood Watch for portions of North Central Ohio and 
Northwest Ohio has been cancelled. While additional showers and 
thunderstorms remain possible across this area this afternoon and
tonight, the heaviest rain is expected to be focused across
northern Ohio. Motorists should continue to use caution if driving
in thunderstorms and avoid any areas with high water. 

$$

OHZ003-007-009>014-020>023-089-PAZ001>003-282345-
/O.EXB.KCLE.FF.A.0001.000000T0000Z-200329T1600Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Lucas-Ottawa-Erie-Lorain-Cuyahoga-Lake-Geauga-Ashtabula Inland-
Medina-Summit-Portage-Trumbull-Ashtabula Lakeshore-Northern Erie-
Southern Erie-Crawford-
Including the cities of Toledo, Port Clinton, Sandusky, Lorain, 
Cleveland, Mentor, Chardon, Jefferson, Medina, Akron, Ravenna, 
Warren, Ashtabula, Erie, Edinboro, and Meadville
1133 AM EDT Sat Mar 28 2020

...FLASH FLOOD WATCH IN EFFECT THROUGH SUNDAY MORNING...

The National Weather Service in Cleveland has expanded the

* Flash Flood Watch to include portions of Ohio and northwest 
  Pennsylvania, including the following areas, in Ohio, 
  Ashtabula Inland, Ashtabula Lakeshore, Cuyahoga, Erie, Geauga, 
  Lake, Lorain, Lucas, Medina, Ottawa, Portage, Summit, and 
  Trumbull. In northwest Pennsylvania, Crawford, Northern Erie, 
  and Southern Erie. 

* Through Sunday morning

* Multiple rounds of showers and thunderstorms will move across
  the area through Sunday morning. Portions of the area received
  over an inch of rain in the last 24 hours and may receive an 
  additional 1 to 1.5 inches through Sunday morning. Training of 
  storms is also possible with locally higher amounts.
 
* Possible flash flooding could lead to rapidly rising and swift 
  moving water in creeks and low lying areas. 

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.

&&

$$

OHZ006-008-018-019-282345-
/O.EXT.KCLE.FF.A.0001.000000T0000Z-200329T1600Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Wood-Sandusky-Seneca-Huron-
Including the cities of Bowling Green, Fremont, Tiffin, 
and Norwalk
1133 AM EDT Sat Mar 28 2020

...FLASH FLOOD WATCH NOW IN EFFECT THROUGH SUNDAY MORNING...

The Flash Flood Watch is now in effect for

* Portions of north central Ohio and northwest Ohio, including 
  the following areas, in north central Ohio, Huron. In 
  northwest Ohio, Sandusky, Seneca, and Wood. 

* Through Sunday morning

* Multiple rounds of showers and thunderstorms will move across
  the area through Sunday morning. Portions of the area received
  over an inch of rain in the last 24 hours and may receive an 
  additional 1 to 1.5 inches through Sunday morning. Training of 
  storms is also possible with locally higher amounts.

* Possible flash flooding could lead to rapidly rising and swift 
  moving water in creeks and low lying areas. 

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.

&&

$$
680 
WGUS61 KCLE 282007
FFACLE

Flood Watch
National Weather Service Cleveland OH
407 PM EDT Sat Mar 28 2020

...FLASH FLOODING POSSIBLE THROUGH SUNDAY MORNING ACROSS NORTHERN
OHIO AND NORTHWEST PENNSYLVANIA...

.Multiple rounds of showers and thunderstorms are expected
through tonight as a slow moving warm front lifts north across
the area. This warm front will provide a focus for heavy rainfall
which may be heavy at times and provide a focus for storms to
train over the same areas. Portions of the watch area received an
inch of more of rainfall over the last 24 hours. Much of this
area can expect another inch to inch and a half of rain through
midday Sunday which could result in flash flooding.

OHZ003-006>014-018>023-089-PAZ001>003-290415-
/O.CON.KCLE.FF.A.0001.000000T0000Z-200329T1600Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Lucas-Wood-Ottawa-Sandusky-Erie-Lorain-Cuyahoga-Lake-Geauga-
Ashtabula Inland-Seneca-Huron-Medina-Summit-Portage-Trumbull-
Ashtabula Lakeshore-Northern Erie-Southern Erie-Crawford-
Including the cities of Toledo, Bowling Green, Port Clinton, 
Fremont, Sandusky, Lorain, Cleveland, Mentor, Chardon, Jefferson,
Tiffin, Norwalk, Medina, Akron, Ravenna, Warren, Ashtabula, Erie,
Edinboro, and Meadville
407 PM EDT Sat Mar 28 2020

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

The Flash Flood Watch continues for

* Portions of Ohio and northwest Pennsylvania, including the 
  following areas, in Ohio, Ashtabula Inland, Ashtabula 
  Lakeshore, Cuyahoga, Erie, Geauga, Huron, Lake, Lorain, Lucas, 
  Medina, Ottawa, Portage, Sandusky, Seneca, Summit, Trumbull, 
  and Wood. In northwest Pennsylvania, Crawford, Northern Erie, 
  and Southern Erie. 

* Through Sunday morning

* Multiple rounds of showers and thunderstorms will move across 
  the area through Sunday morning. Portions of the area received 
  over an inch of rain in the last 24 hours and may receive an 
  additional 1 to 1.5 inches through Sunday morning. Training of 
  storms is also possible with locally higher amounts. 

* Possible flash flooding could lead to rapidly rising and swift 
  moving water in creeks and low lying areas. 

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.

&&

$$
305 
WGUS61 KCLE 282250
FFACLE

URGENT - IMMEDIATE BROADCAST REQUESTED
Flood Watch
National Weather Service Cleveland OH
650 PM EDT Sat Mar 28 2020

...FLASH FLOODING POSSIBLE THROUGH SUNDAY MORNING ACROSS NORTHERN
OHIO AND NORTHWEST PENNSYLVANIA...

.Multiple rounds of showers and thunderstorms are expected
through tonight as a slow moving warm front lifts north across
the area. This warm front will provide a focus for heavy rainfall
which may be heavy at times and provide a focus for storms to
train over the same areas. Portions of the watch area received an
inch of more of rainfall over the last 24 hours. Much of this
area can expect another inch to inch and a half of rain through
midday Sunday which could result in flash flooding.

OHZ017-027>033-036>038-047-290700-
/O.EXA.KCLE.FF.A.0001.000000T0000Z-200329T1600Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Hancock-Wyandot-Crawford-Richland-Ashland-Wayne-Stark-Mahoning-
Marion-Morrow-Holmes-Knox-
Including the cities of Findlay, Upper Sandusky, Bucyrus, 
Mansfield, Ashland, Wooster, Canton, Youngstown, Marion, 
Mount Gilead, Millersburg, and Mount Vernon
650 PM EDT Sat Mar 28 2020

...FLASH FLOOD WATCH IN EFFECT THROUGH SUNDAY MORNING...

The National Weather Service in Cleveland has expanded the

* Flash Flood Watch to include portions of north central Ohio, 
  northeast Ohio, and northwest Ohio, including the following 
  areas, in north central Ohio, Ashland, Crawford, Knox, Marion, 
  Morrow, and Richland. In northeast Ohio, Holmes, Mahoning, 
  Stark, and Wayne. In northwest Ohio, Hancock and Wyandot. 

* Through Sunday morning

* Multiple rounds of showers and thunderstorms will move across
  the area through Sunday morning. Some storms may contain heavy
  rain. Training of storms is also possible with locally higher
  amounts possibly leading to flash flooding.
  

* Possible flash flooding could lead to rapidly rising and swift 
  moving water in creeks and low lying areas. 

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.

&&

$$

OHZ003-006>014-018>023-089-PAZ001>003-290700-
/O.CON.KCLE.FF.A.0001.000000T0000Z-200329T1600Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Lucas-Wood-Ottawa-Sandusky-Erie-Lorain-Cuyahoga-Lake-Geauga-
Ashtabula Inland-Seneca-Huron-Medina-Summit-Portage-Trumbull-
Ashtabula Lakeshore-Northern Erie-Southern Erie-Crawford-
Including the cities of Toledo, Bowling Green, Port Clinton, 
Fremont, Sandusky, Lorain, Cleveland, Mentor, Chardon, Jefferson,
Tiffin, Norwalk, Medina, Akron, Ravenna, Warren, Ashtabula, Erie,
Edinboro, and Meadville
650 PM EDT Sat Mar 28 2020

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

The Flash Flood Watch continues for

* Portions of Ohio and northwest Pennsylvania, including the 
  following areas, in Ohio, Ashtabula Inland, Ashtabula 
  Lakeshore, Cuyahoga, Erie, Geauga, Huron, Lake, Lorain, Lucas, 
  Medina, Ottawa, Portage, Sandusky, Seneca, Summit, Trumbull, 
  and Wood. In northwest Pennsylvania, Crawford, Northern Erie, 
  and Southern Erie. 

* Through Sunday morning

* Multiple rounds of showers and thunderstorms will move across 
  the area through Sunday morning. Portions of the area received 
  over an inch of rain in the last 24 hours and may receive an 
  additional 1 to 1.5 inches through Sunday morning. Training of 
  storms is also possible with locally higher amounts. 

* Possible flash flooding could lead to rapidly rising and swift 
  moving water in creeks and low lying areas. 

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.

&&

$$
786 
WGUS61 KCLE 290614
FFACLE

Flood Watch
National Weather Service Cleveland OH
214 AM EDT Sun Mar 29 2020

...FLASH FLOODING POSSIBLE THROUGH SUNDAY MORNING ACROSS NORTHERN
OHIO AND NORTHWEST PENNSYLVANIA...

.Multiple rounds of showers and thunderstorms are expected
through tonight as a slow moving warm front lifts north across
the area. This warm front will provide a focus for heavy rainfall
which may be heavy at times and provide a focus for storms to
train over the same areas. Portions of the watch area received an
inch of more of rainfall over the last 24 hours. Much of this
area can expect another inch to inch and a half of rain through
midday Sunday which could result in flash flooding.

OHZ003-006>009-017>019-027-028-036-290715-
/O.CAN.KCLE.FF.A.0001.000000T0000Z-200329T1600Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Lucas-Wood-Ottawa-Sandusky-Erie-Hancock-Seneca-Huron-Wyandot-
Crawford-Marion-
Including the cities of Toledo, Bowling Green, Port Clinton, 
Fremont, Sandusky, Findlay, Tiffin, Norwalk, Upper Sandusky, 
Bucyrus, and Marion
214 AM EDT Sun Mar 29 2020

...FLASH FLOOD WATCH IS CANCELLED...

The Flash Flood Watch for portions of north central Ohio and
northwest Ohio has been cancelled. The heaviest axis of showers
and thunderstorms have moved east into northeastern Ohio.

$$

OHZ010>014-020>023-029>033-037-038-047-089-PAZ001>003-291600-
/O.CON.KCLE.FF.A.0001.000000T0000Z-200329T1600Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Lorain-Cuyahoga-Lake-Geauga-Ashtabula Inland-Medina-Summit-
Portage-Trumbull-Richland-Ashland-Wayne-Stark-Mahoning-Morrow-
Holmes-Knox-Ashtabula Lakeshore-Northern Erie-Southern Erie-
Crawford-
Including the cities of Lorain, Cleveland, Mentor, Chardon, 
Jefferson, Medina, Akron, Ravenna, Warren, Mansfield, Ashland, 
Wooster, Canton, Youngstown, Mount Gilead, Millersburg, 
Mount Vernon, Ashtabula, Erie, Edinboro, and Meadville
214 AM EDT Sun Mar 29 2020

...FLASH FLOOD WATCH REMAINS IN EFFECT UNTIL NOON EDT TODAY...

The Flash Flood Watch continues for

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

* Until noon EDT today

* Multiple rounds of showers and thunderstorms will move across
  the area through Sunday morning. Portions of the area received
  over an inch of rain in the last 24 hours and may receive an
  additional 1 to 1.5 inches through Sunday morning. Training of 
  storms is also possible with locally higher amounts. 

* Possible flash flooding could lead to rapidly rising and swift 
  moving water in creeks and low lying areas. 

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.

&&

$$
384 
WGUS61 KCLE 290930
FFACLE

Flood Watch
National Weather Service Cleveland OH
530 AM EDT Sun Mar 29 2020

OHZ010>014-020>023-029>033-037-038-047-089-PAZ001>003-291030-
/O.CAN.KCLE.FF.A.0001.000000T0000Z-200329T1600Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Lorain-Cuyahoga-Lake-Geauga-Ashtabula Inland-Medina-Summit-
Portage-Trumbull-Richland-Ashland-Wayne-Stark-Mahoning-Morrow-
Holmes-Knox-Ashtabula Lakeshore-Northern Erie-Southern Erie-
Crawford-
Including the cities of Lorain, Cleveland, Mentor, Chardon, 
Jefferson, Medina, Akron, Ravenna, Warren, Mansfield, Ashland, 
Wooster, Canton, Youngstown, Mount Gilead, Millersburg, 
Mount Vernon, Ashtabula, Erie, Edinboro, and Meadville
530 AM EDT Sun Mar 29 2020

...FLASH FLOOD WATCH IS CANCELLED...

The Flash Flood Watch for portions of Ohio and northwest
Pennsylvania has been cancelled. Additional heavy rainfall and
flooding is no longer expected across the area. However, flood 
warnings are in effect at this time. Be sure to monitor the latest
statements concerning ongoing flooding.

$$

What forecasters said that day

The local office's own words before this flash flood watch 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 flash flood watch went out at Mar 27, 10:46 AM EDT, 1 hour 21 minutes earlier.

Area forecast discussion, Mar 27, 10:46 AM EDT, 1 hour 21 minutes before
Area Forecast Discussion
National Weather Service Cleveland OH
1046 AM EDT Fri Mar 27 2020

.SYNOPSIS...
A ridge of high pressure will build east across the local area
today. A warm front will lift north toward the area tonight and
move north of the area Saturday night. Deep low pressure will
move into the western Great Lakes by Sunday morning forcing a
cold front east across the area Saturday night. As the low
pressure system moves northeast of the area Sunday night, a
trough will linger back across the local area. A ridge of high
pressure extending south from northern Canada will build east
across the area Monday night. Another low pressure system will
move east across the Tennessee Valley through mid week extending
a trough north across the local area.

&&

.NEAR TERM /THROUGH SATURDAY/...
Added in patchy fog for the southwest and southeast portions of
our area this morning through noon as a stubborn inversion
remains entrenched over much of the area this morning. Also
added in heavy rain wording tonight, especially 2-8 am Saturday,
and increased PoPs to categorical during this timeframe. Models
are beginning to come into agreement of a line of heavy showers
and thunderstorms which may backbuild and train in an area along
US-30 and along and west of I-71. Expectation is for a Flash
Flood Watch to be issued later this morning/afternoon in this
area.

A weak upper level shortwave trough and associated positive
vorticity maximum continues to move east of the area at this
time. This feature along with a surface cold front resulted in
some rain activity overnight but the bulk of that activity is
now east of the local area. This trend will continue through the
morning hours and drier air will move into the region with the
weak surface ridging. Our next weather maker is already showing
up on radar across Missouri and Illinois at this time. An area
of showers and thunderstorms were moving east along a stationary
front that will eventually become a warm front later today. The
warm front is progged to move north toward the area by
Saturday. The models show differing solutions on the tracking of
the warm front. The GFS is the most pessimistic while the
European is the most aggressive in forward motion. The rest of
the models are in between. Leaned in the direction of the
European this morning as nose of the mid level jet surges
northeast Saturday evening suggesting warm front will become
progressive after this forecast period. In the interim, the warm
front appears that it will stall for about a 6 hour period
beginning late Saturday afternoon just south of the lake. There
is uncertainty on where axis of the heavier rain will occur so
after coordination with surrounding offices, will hold off on
issuing any flood watch at this time. However, even though
beyond this period, as convection develops, can't rule out some
heavy rainers that could produce some localized flooding;
especially in the northern tier counties.

In the mean time, after passage of weak cold front this morning,
temperatures will be cooler today than yesterday. Fair weather
will return under the influence of the high pressure ridge.
Showers will begin to spread into the southwest portions of the
area tonight and much of the area by morning in advance of the
warm front. Showers and a few embedded thunderstorms expected
Saturday as the warm front approaches. There is the possibility
for severe thunderstorms along the warm front by late Saturday
afternoon into the evening. Temperatures will take a dip
tonight and then surge well into the 60s Saturday over much of
the area. Exception is the extreme northeast in northwest
Pennsylvania where temperatures will remain in the lower 50s for
highs tomorrow.

&&

.SHORT TERM /SATURDAY NIGHT THROUGH MONDAY NIGHT/...
Atmospheric parameters in the high-res forecast models are starting
to be a little more robust and concerning for severe weather across
northern Ohio into northwest Pennsylvania Saturday evening through
early Sunday morning. There will be two time areas and time frame to
be watching for the threat of severe weather across the area. A warm
front will be slowly lifting northward across northern Ohio Saturday
evening. Models indicate this frontal boundary may slow down or
briefly stall near the lakeshore Saturday evening before it gets
push northward across Lake Erie. Saturday evening and night
convection will need to be monitored because dewpoints will be in
the low 60s pooling along and south of that frontal boundary.
Helicity values will be 300 to 400 which is plenty high. Most
unstable CAPE values will be approaching 1000 to 1200 J/KG. Forecast
model Low level CAPE 0-1km values may be around 200 to 400 J/KG.
0-6km Bulk shear values will be on the order of 60 to 75 knots which
very high shear. Any convection along this warm front as it moves
northward may have a large hail and isolated tornado threat Saturday
evening into Saturday night. As we look later Saturday night into
early Sunday morning, we will be watching severe storms move across
the Ohio Valley from the west into Ohio after midnight. These storms
will continue to feed off an unstable warm sector late into the
night with a damaging wind, large hail, and isolated tornado threat.
We expect a broken lines of storms with a couple discreet cells
possible in the broken line late in the night. We agree with the SPC
day 2 outlook regarding the a slight risk for severe storms. Any
training of heavier convection over saturated ground may add to a
localized flash flooding threat as well.

The cold front will move through early Sunday morning with our max
temperatures in the middle to upper 60s occurring early in the
morning. Temperatures will fall during the day on Sunday along with
gusty southwest to westerly winds 25 to 40 mph.  We may get close to
wind advisory criteria for some areas of northwest Ohio. The strong
low pressure system will move across Ontario and Quebec Sunday night
into Monday morning. Wrap around clouds and occasional scattered
rain showers will be possible Sunday night into Monday with
temperatures in the 40s and blustery.

&&

.LONG TERM /TUESDAY THROUGH THURSDAY/...
High pressure north of the Great Lakes region will ridge down
across the eastern Great Lakes Monday night into Tuesday. But a
northeasterly flow off the lake will continue to bring lake
effect clouds. We don't expect to clear out of the clouds before
the next system impacts the area late Tuesday. Another stout
upper level wave will move across the Ohio Valley late Tuesday
into Wednesday. A surface low pressure system will also develop
in the lower Ohio Valley and move towards Upstate New York by
early Thursday. It will remain cool, wet with off and on rain
showers and blustery for the middle of next week.

&&

.AVIATION /12Z Friday THROUGH Tuesday/...
Some lingering lower clouds and fog will persist into the day
today and then gradually improve by this afternoon. A warm
front will begin to push north toward the local area tonight and
bring with it more rain and lowering ceilings; especially in
the southwest portions of the forecast area early tonight and
the entire forecast area overnight tonight. Winds will
generally be light through the period but begin to increase
toward the end of the period at Erie.

.OUTLOOK...Non-VFR conditions possible through Sunday in
intermittent periods of rain and scattered thunderstorms.

&&

.MARINE...
Weak high pressure north of the Great Lakes today will continue a
light northeast surface flow 5 to 10 knots. A frontal boundary
across the Ohio Valley will sharpen up and slowly move northward as
a warm front late tonight into Saturday. The northeast to easterly
surface flow over the lake will also increase due to the pressure
gradient. Waves will increase due to easterly winds increasing 15 to
20 knots late tonight into Saturday. SCA may be needed by late
tonight through the weekend. We will also be concern about the
extended time of the easterly flow piling water on the western basin
of the lake and possible some minor lakeshore flooding. That will an
something to monitor tonight into Saturday. The warm front will move
across the lake late Saturday with a change to southerly and
southwesterly winds increase 20 to 25 knots late Saturday and
Saturday night. A cold front will move across the lake early Sunday
morning with a strong area of low pressure moving across Ontario and
Quebec by Sunday. Southwest to westerly winds will increase 20 to 30
knots with gusts likely up to 40 knots. High end SCA conditions will
continua on Sunday with possible low end Gales during the day
Sunday. The low moves away from the region on Monday with north to
northwest winds relaxing down to around 10 to 15 knots.

&&

.CLE WATCHES/WARNINGS/ADVISORIES...
OH...None.
PA...None.
MARINE...None.

&&

SYNOPSIS...Lombardy
NEAR TERM...Kahn/Lombardy
SHORT TERM...Griffin
LONG TERM...Griffin
AVIATION...Lombardy
MARINE...Griffin
Hazardous weather outlook, Mar 27, 4:19 AM EDT, 7 hours 48 minutes before
Hazardous Weather Outlook
National Weather Service Cleveland OH
419 AM EDT Fri Mar 27 2020

OHZ003-006>014-017>023-027>033-036>038-047-089-PAZ001>003-280830-
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-
419 AM EDT Fri Mar 27 2020

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

.DAY ONE...Today and tonight.

Rain, heavy at times, and embedded thunderstorms are likely
at times Friday evening through Saturday night. With rainfall of 1
to 2 inches, and locally higher amounts, some flooding will be
possible.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday.

There will be a marginal risk for isolated severe thunderstorms late
tonight into Saturday morning with large hail as the main threat. The
severe weather threat will increase to a slight risk Saturday evening
into early Sunday morning with a threat for damaging winds, large
hail, and an isolated tornado possible. Localized heavy rainfall and
isolated flash flooding may also be possible Saturday and Saturday
night.

Strong gusty southwest to westerly winds between 35 and 45 mph will
be possible on Sunday.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed Saturday night.

LEZ061-142>149-162>169-280830-
Lake Erie open waters from Ripley to Buffalo NY-
Lake Erie nearshore waters from Maumee Bay to Reno Beach OH-
Lake Erie nearshore waters from Reno Beach to The Islands OH-
Lake Erie nearshore waters from The Islands to Vermilion OH-
Lake Erie nearshore waters from Vermilion to Avon Point OH-
Lake Erie nearshore waters from Avon Point to Willowick OH-
Lake Erie nearshore waters from Willowick to Geneva-on-the Lake OH-
Lake Erie nearshore waters from Geneva-on-the-Lake to Conneaut OH-
Lake Erie nearshore waters from Conneaut OH to Ripley NY-
Lake Erie open waters from Maumee Bay to Reno Beach OH-
Lake Erie open waters from Reno Beach to The Islands OH-
Lake Erie open waters from The Islands to Vermilion OH-
Lake Erie open waters from Vermilion to Avon Point OH-
Lake Erie open waters from Avon Point to Willowick OH-
Lake Erie open waters from Willowick to Geneva-on-the-Lake OH-
Lake Erie open waters from Geneva-on-the-Lake to Conneaut OH-
Lake Erie open waters from Conneaut OH to Ripley NY-
419 AM EDT Fri Mar 27 2020

This Hazardous Weather Outlook is for central Lake Erie, eastern
Lake Erie and western Lake Erie.

.DAY ONE...Today and tonight.

Hazardous weather is not expected at this time.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday.

A persistent easterly surface flow late tonight into Saturday may
cause water levels to rise and minor lakeshore flooding on the
western basin of the lake this weekend.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

Nearby

Flash Flood Watches in Ohio, 2020Flash Flood Watches in Pennsylvania, 2020Every flash flood watch in 2020

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.