Alert archive / Ohio / Flash Flood Warnings in 2021
Flash Flood Warning 19, NWS Cleveland, OH
NWS Cleveland, OH issued this flash flood warning at Jul 20, 2021, 6:53 PM EDT for Mahoning County, Ohio. It was in force for 75 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Jul 20, 2021, 6:53 PM EDT (22:53 UTC)
- Expired
- Jul 20, 2021, 8:08 PM EDT
- In force
- 75 min
- Issued by
- NWS Cleveland, OH
- Area
- Storm-based polygon
- Flood severity
- None
County Mahoning County, OH
The radar
The Pittsburgh radar (KPBZ), 70 km from the middle of the area, began a volume at 22:56 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, 10.9 hours before the alert went out and 87 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
- 66 J/kg
- Mixed-layer CIN
- -67 J/kg
- Mixed-layer LCL
- 852 m above ground
- 0-6 km bulk shear
- 6 kt
- 0-1 km storm-relative helicity
- 25 m²/s²
- 0-3 km storm-relative helicity
- 17 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
938
WGUS51 KCLE 202253
FFWCLE
OHC099-210145-
/O.NEW.KCLE.FF.W.0019.210720T2253Z-210721T0145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Cleveland OH
653 PM EDT Tue Jul 20 2021
The National Weather Service in Cleveland has issued a
* Flash Flood Warning for...
Northeastern Mahoning County in northeastern Ohio...
* Until 945 PM EDT.
* At 653 PM EDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Between 1 and 2.5 inches of
rain have fallen. Flash flooding is ongoing or expected to begin
shortly.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Doppler radar.
IMPACT...Flooding of small creeks and streams, urban areas,
highways, streets and underpasses as well as other
drainage and low lying areas.
* Some locations that will experience flash flooding include...
Youngstown, Boardman, Campbell, Struthers, Poland and Lowellville.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Excessive runoff from heavy rainfall will cause flooding of small
creeks and streams, urban areas, highways, streets and underpasses
as well as other drainage areas and low lying spots.
&&
LAT...LON 4113 8058 4113 8052 4110 8052 4106 8052
4105 8052 4104 8052 4103 8052 4102 8052
4103 8070 4113 8070 4113 8068 4113 8067
4113 8065 4113 8063 4113 8062 4113 8059
FLASH FLOOD...RADAR INDICATED
EXPECTED RAINFALL...1-1.5 INCHES IN 1 HOUR
$$
Sefcovic1 follow-up statement
215
WGUS71 KCLE 210008
FFSCLE
Flash Flood Statement
National Weather Service Cleveland OH
808 PM EDT Tue Jul 20 2021
OHC099-210018-
/O.CAN.KCLE.FF.W.0019.000000T0000Z-210721T0145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Mahoning OH-
808 PM EDT Tue Jul 20 2021
...FLASH FLOOD WARNING IS CANCELLED FOR NORTHEASTERN MAHONING
COUNTY...
The heavy rain has ended. Flooding is no longer expected to pose a
threat. Please continue to heed remaining road closures.
LAT...LON 4113 8058 4113 8052 4110 8052 4106 8052
4105 8052 4104 8052 4103 8052 4102 8052
4103 8070 4113 8070 4113 8068 4113 8067
4113 8065 4113 8063 4113 8062 4113 8059
$$The office that day
Everything else NWS Cleveland, OH issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 20, 6:02 PM EDT | Severe Thunderstorm Warning | CLE | Mahoning, Trumbull | 28 min |
| Jul 20, 6:30 PM EDT | Special Weather Statement | CLE | Mahoning | 30 min |
| Jul 20, 6:39 PM EDT | Areal Flood Advisory | CLE | Mahoning, Trumbull | 3 hr |
| Jul 20, 6:57 PM EDT | Special Weather Statement | CLE | Mahoning | 33 min |
Nearby
Flash Flood Warnings in Ohio, 2021Every flash flood warning 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.