Alert archive / Ohio / Flash Flood Watches in 2021
Flash Flood Watch 3, NWS Cleveland, OH
NWS Cleveland, OH issued this flash flood watch at Aug 18, 2021, 3:23 AM EDT for 4 counties in Ohio; Crawford County, Pennsylvania. It took effect at Aug 18, 2021, 8:00 AM EDT. It was in force for 7 hr.
The area
The counties it named.
The facts
- Issued
- Aug 18, 2021, 3:23 AM EDT (07:23 UTC)
- In effect from
- Aug 18, 2021, 8:00 AM EDT
- Expired
- Aug 18, 2021, 2:54 PM EDT
- In force
- 7 hr
- Issued by
- NWS Cleveland, OH
- Flood severity
- None
Counties Holmes County, OH, Mahoning County, OH, Stark County, OH, Trumbull County, OH, Crawford County, PA
The radar
The Cleveland radar (KCLE), 82 km from the middle of the area, began a volume at 07:26 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, 7.4 hours before the alert went out and 105 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
- 372 J/kg
- Mixed-layer CIN
- -1 J/kg
- Mixed-layer LCL
- 826 m above ground
- 0-6 km bulk shear
- 17 kt
- 0-1 km storm-relative helicity
- 34 m²/s²
- 0-3 km storm-relative helicity
- 78 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
968 WGUS61 KCLE 180723 FFACLE URGENT - IMMEDIATE BROADCAST REQUESTED Flood Watch National Weather Service Cleveland OH 323 AM EDT Wed Aug 18 2021 OHZ023-032-033-038-PAZ003-181530- /O.NEW.KCLE.FF.A.0003.210818T1200Z-210818T2000Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Trumbull-Stark-Mahoning-Holmes-Crawford- Including the cities of Alliance, Boardman, Niles, Massillon, Meadville, Canton, Youngstown, Millersburg, Austintown, Titusville, Killbuck, and Warren 323 AM EDT Wed Aug 18 2021 ...FLASH FLOOD WATCH IN EFFECT FROM 8 AM EDT THIS MORNING THROUGH THIS AFTERNOON... The National Weather Service in Cleveland has issued a * Flash Flood Watch for portions of northeast Ohio and northwest Pennsylvania, including the following areas, in northeast Ohio, Holmes, Mahoning, Stark and Trumbull. In northwest Pennsylvania, Crawford. * From 8 AM EDT this morning through this afternoon. * Rainfall from the remnants of Tropical Storm Fred is expected to impact the area through this afternoon. Rainfall amounts of 1 to 2 inches are possible. Moderate to at times heavy rain falling on an already saturated ground will increase the threat for flash flooding. PRECAUTIONARY/PREPAREDNESS ACTIONS... You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. && $$ Greenawalt
3 follow-up statements
695 WGUS61 KCLE 181311 FFACLE Flood Watch National Weather Service Cleveland OH 911 AM EDT Wed Aug 18 2021 OHZ038-181415- /O.CAN.KCLE.FF.A.0003.000000T0000Z-210818T2000Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Holmes- Including the cities of Millersburg and Killbuck 911 AM EDT Wed Aug 18 2021 ...FLASH FLOOD WATCH IS CANCELLED... The Flash Flood Watch for Holmes County has been cancelled. The Flood Watch is cancelled. $$ OHZ023-032-033-PAZ003-182000- /O.CON.KCLE.FF.A.0003.000000T0000Z-210818T2000Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Trumbull-Stark-Mahoning-Crawford- Including the cities of Alliance, Boardman, Niles, Massillon, Meadville, Canton, Youngstown, Austintown, Titusville, and Warren 911 AM EDT Wed Aug 18 2021 ...FLASH FLOOD WATCH REMAINS IN EFFECT UNTIL 4 PM EDT THIS AFTERNOON... The Flash Flood Watch continues for * Portions of northeast Ohio and northwest Pennsylvania, including the following areas, in northeast Ohio, Mahoning, Stark and Trumbull. In northwest Pennsylvania, Crawford. * Until 4 PM EDT this afternoon. * Rainfall from the remnants of Tropical Storm Fred is expected to impact the area through this afternoon. Rainfall amounts of 1 to 2 inches are possible. Moderate to at times heavy rain falling on an already saturated ground will increase the threat for flash flooding. PRECAUTIONARY/PREPAREDNESS ACTIONS... You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. && $$ Campbell
314 WGUS61 KCLE 181631 FFACLE Flood Watch National Weather Service Cleveland OH 1231 PM EDT Wed Aug 18 2021 OHZ032-181745- /O.CAN.KCLE.FF.A.0003.000000T0000Z-210818T2000Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Stark- Including the cities of Massillon, Alliance, and Canton 1231 PM EDT Wed Aug 18 2021 ...FLASH FLOOD WATCH IS CANCELLED... The Flash Flood Watch for Stark County has been cancelled. The Flood Watch is cancelled. $$ OHZ023-033-PAZ003-182000- /O.CON.KCLE.FF.A.0003.000000T0000Z-210818T2000Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Trumbull-Mahoning-Crawford- Including the cities of Boardman, Niles, Meadville, Titusville, Youngstown, Austintown, and Warren 1231 PM EDT Wed Aug 18 2021 ...FLASH FLOOD WATCH REMAINS IN EFFECT UNTIL 4 PM EDT THIS AFTERNOON... The Flash Flood Watch continues for * Portions of northeast Ohio and northwest Pennsylvania, including the following areas, in northeast Ohio, Mahoning and Trumbull. In northwest Pennsylvania, Crawford. * Until 4 PM EDT this afternoon. * Rainfall from the remnants of Tropical Storm Fred continue to impact the area this afternoon. There has already been 0.5 to 1.5 inches of rain that has fallen, with an additional 1 to 2 inches expected in the heaviest bans. Moderate to heavy rainfall on an already saturated ground will continue to increase the threat for flooding. PRECAUTIONARY/PREPAREDNESS ACTIONS... You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. && $$ Campbell
367 WGUS61 KCLE 181854 FFACLE Flood Watch National Weather Service Cleveland OH 254 PM EDT Wed Aug 18 2021 OHZ023-033-PAZ003-182000- /O.CAN.KCLE.FF.A.0003.000000T0000Z-210818T2000Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Trumbull-Mahoning-Crawford- Including the cities of Boardman, Niles, Meadville, Titusville, Youngstown, Austintown, and Warren 254 PM EDT Wed Aug 18 2021 ...FLASH FLOOD WATCH IS CANCELLED... The Flash Flood Watch for portions of northeast Ohio and northwest Pennsylvania, including the following counties in northeast Ohio, Mahoning and Trumbull. In northwest Pennsylvania, Crawford County has been cancelled. The Flood Watch is cancelled. Flooding is no longer expected to pose a threat. Please continue to heed remaining road closures. $$ Campbell
The office that day
Everything else NWS Cleveland, OH issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 18, 9:24 AM EDT | Small Craft Advisory | CLE | 13 hr | |
| Aug 18, 9:25 AM EDT | Beach Hazards Statement | CLE | Ashtabula | 13 hr |
| Aug 18, 9:39 AM EDT | Areal Flood Advisory | CLE | Lucas, Wood | 4 hr |
| Aug 18, 11:46 AM EDT | Areal Flood Advisory | CLE | Mahoning | 2 hr |
Nearby
Flash Flood Watches in Ohio, 2021Flash Flood Watches in Pennsylvania, 2021Every flash flood watch 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.