Alert archive / Ohio / Flash Flood Warnings in 2021
Flash Flood Warning 23, NWS Wilmington, OH
NWS Wilmington, OH issued this flash flood warning at Jul 29, 2021, 8:11 PM EDT for 5 counties in Ohio; Lewis County, Kentucky. It was in force for 4 hr. 4 reports came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Jul 29, 2021, 8:11 PM EDT (00:11 UTC)
- Expired
- Jul 30, 2021, 12:15 AM EDT
- In force
- 4 hr
- Issued by
- NWS Wilmington, OH
- Area
- Storm-based polygon
- Flood severity
- None
Counties Lewis County, KY, Adams County, OH, Highland County, OH, Pike County, OH, Ross County, OH, Scioto County, OH
The radar
The Cincinnati radar (KILN), 96 km from the middle of the area, began a volume at 00:10 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jul 29, 8:25 PM EDT | FLASH FLOOD | Idaho, OH | ROADS CLOSED NEAR IDAHO AND POINTS WEST. WATER IS APPROACHING HOMES. |
| Jul 29, 8:50 PM EDT | HEAVY RAIN 1.5 | 3 Wsw Belfast, OH | MEASURED IN 45 MINTUES. |
| Jul 29, 9:00 PM EDT | FLASH FLOOD | Idaho, OH | WATER RESCUES FROM HOMES IN THE IDAHO AREA. LOTS OF FLOODING IN THE COUNTY |
| Jul 29, 11:10 PM EDT | FLASH FLOOD | Idaho, OH | ROADS REMAIN CLOSED DUE TO FLASH FLOODING. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Cncnati-Daytn, OH (KILN), launched 00:00Z, 0.2 hours before the alert went out and 96 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
- 2113 J/kg
- Mixed-layer CIN
- -24 J/kg
- Mixed-layer LCL
- 691 m above ground
- 0-6 km bulk shear
- 38 kt
- 0-1 km storm-relative helicity
- 137 m²/s²
- 0-3 km storm-relative helicity
- 139 m²/s²
- Significant tornado parameter
- 1.7
- Supercell composite
- 9.2
The text
As transmitted.
778
WGUS51 KILN 300011
FFWILN
KYC135-OHC001-071-131-141-145-300415-
/O.NEW.KILN.FF.W.0023.210730T0011Z-210730T0415Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Wilmington OH
811 PM EDT Thu Jul 29 2021
The National Weather Service in Wilmington has issued a
* Flash Flood Warning for...
Northeastern Lewis County in northeastern Kentucky...
Northeastern Adams County in southwestern Ohio...
Eastern Highland County in southwestern Ohio...
Pike County in southwestern Ohio...
Southwestern Ross County in southwestern Ohio...
Scioto County in southwestern Ohio...
* Until 1215 AM EDT.
* At 811 PM EDT, radar indicated thunderstorms producing heavy rain
across the warned area. Between 1 and 3 inches of rain have
fallen. Additional rainfall amounts of 1 to 2 inches are possible
in the warned area. Flash flooding is ongoing or expected to begin
shortly.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Radar.
IMPACT...Flash flooding of small creeks and streams, urban
areas, highways, streets and underpasses as well as
other poor drainage and low-lying areas.
* Some locations that may experience flash flooding include...
Portsmouth, Hillsboro, Waverly, Wheelersburg, New Boston, Piketon,
Peebles, Greenup, Marshall, South Webster, Bainbridge, Kincaid
Springs, Pike Lake, Lucasville, Rosemount, Cynthiana, Clarktown,
Sciotodale, Highland Holiday and Belfast.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
To report flash flooding, go to our website at weather.gov/iln and
submit your report via social media, when you can do so safely.
&&
LAT...LON 3912 8372 3931 8346 3933 8341 3918 8307
3897 8280 3895 8281 3893 8275 3885 8276
3885 8265 3875 8266 3875 8270 3868 8271
3868 8276 3860 8274 3857 8282 3861 8285
3875 8288 3873 8303 3868 8302 3857 8310
FLASH FLOOD...RADAR INDICATED
$$
Novak1 follow-up statement
169
WGUS71 KILN 300244
FFSILN
Flash Flood Statement
National Weather Service Wilmington OH
1044 PM EDT Thu Jul 29 2021
KYC135-OHC001-071-131-141-145-300415-
/O.CON.KILN.FF.W.0023.000000T0000Z-210730T0415Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Lewis KY-Adams OH-Highland OH-Pike OH-Ross OH-Scioto OH-
1044 PM EDT Thu Jul 29 2021
...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1215 AM EDT FRIDAY
FOR NORTHEASTERN LEWIS, NORTHEASTERN ADAMS, EASTERN HIGHLAND, PIKE,
SOUTHWESTERN ROSS AND SCIOTO COUNTIES...
At 1044 PM EDT, local law enforcement reported flash flooding across
the warned area.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Law enforcement reported.
IMPACT...Flash flooding of small creeks and streams, urban areas,
highways, streets and underpasses as well as other poor
drainage and low-lying areas.
Some locations that may experience flash flooding include...
Portsmouth, Hillsboro, Waverly, Wheelersburg, New Boston, Piketon,
Peebles, Greenup, Marshall, South Webster, Bainbridge, Kincaid
Springs, Pike Lake, Lucasville, Rosemount, Cynthiana, Clarktown,
Sciotodale, Highland Holiday and Belfast.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Be especially cautious at night when it is harder to recognize the
dangers of flooding.
To report flash flooding, go to our website at weather.gov/iln and
submit your report via social media, when you can do so safely.
&&
LAT...LON 3912 8372 3931 8346 3933 8341 3918 8307
3897 8280 3895 8281 3893 8275 3885 8276
3885 8265 3875 8266 3875 8270 3868 8271
3868 8276 3860 8274 3857 8282 3861 8285
3875 8288 3873 8303 3868 8302 3857 8310
FLASH FLOOD...OBSERVED
$$
NovakThe office that day
Everything else NWS Wilmington, OH issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 29, 8:04 PM EDT | Severe Thunderstorm Warning | ILN | Adams, Scioto | 41 min |
| Jul 29, 8:36 PM EDT | Severe Thunderstorm Warning | ILN | Adams, Scioto | 28 min |
| Jul 29, 8:45 PM EDT | Areal Flood Advisory | ILN | Adams, Brown, Scioto | 3 hr |
| Jul 29, 9:10 PM EDT | Flash Flood Warning | ILN | Adams, Highland, Pike, Ross, Scioto | 4 hr |
| Jul 29, 9:29 PM EDT | Flash Flood Warning | ILN | Adams, Brown, Scioto | 4 hr |
| Jul 29, 9:47 PM EDT | Areal Flood Advisory | ILN | Brown, Clermont | 3 hr |
| Jul 30, 1:09 AM EDT | Areal Flood Warning | ILN | Pike, Scioto | 7 hr |
| Jul 30, 1:18 AM EDT | Areal Flood Warning | ILN | Adams, Brown, Scioto | 7 hr |
| Jul 29, 9:42 PM EDT | Severe Thunderstorm Warning | ILN | Lewis | 48 min |
Nearby
Flash Flood Warnings in Ohio, 2021Flash Flood Warnings in Kentucky, 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.