Alert archive / Ohio / Flash Flood Warnings in 2024

Flash Flood Warning 16, NWS Wilmington, OH

July 29, 2024Preble County, Ohio; Union County, Indiana

NWS Wilmington, OH issued this flash flood warning at Jul 29, 2024, 11:40 PM EDT for Preble County, Ohio; Union County, Indiana. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Jul 29, 2024, 11:40 PM EDT (03:40 UTC)
Expired: Jul 30, 2024, 2:35 AM EDT
In force: 3 hr
Issued by: NWS Wilmington, OH
Area: Storm-based polygon
Flood severity: None

Counties Union County, IN, Preble County, OH

The radar

The Cincinnati radar (KILN), 88 km from the middle of the area, began a volume at 03:43 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

Cncnati-Daytn, OH (KILN), launched 00:00Z, 3.7 hours before the alert went out and 89 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 980 J/kg
Mixed-layer CIN: -5 J/kg
Mixed-layer LCL: 901 m above ground
0-6 km bulk shear: 25 kt
0-1 km storm-relative helicity: 65 m²/s²
0-3 km storm-relative helicity: 75 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 2.3

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this flash flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Wilmington, OH wrote its last area forecast discussion before this flash flood warning went out at Jul 29, 11:02 PM EDT, 38 minutes earlier.

Area forecast discussion, Jul 29, 11:02 PM EDT, 38 minutes before

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Hazardous weather outlook, Jul 29, 3:48 PM EDT, 7 hours 52 minutes before

Hazardous Weather Outlook
National Weather Service Wilmington OH
348 PM EDT Mon Jul 29 2024

OHZ026-034-035-042>046-051>056-062>065-073-074-082-302000-
Hardin-Mercer-Auglaize-Darke-Shelby-Logan-Union-Delaware-Miami-
Champaign-Clark-Madison-Franklin-Licking-Greene-Fayette-Pickaway-
Fairfield-Ross-Hocking-Pike-
348 PM EDT Mon Jul 29 2024

This Hazardous Weather Outlook is for central Ohio, south central
Ohio and west central Ohio.

.DAY ONE...Tonight.

There is a low probability for widespread hazardous weather.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

Several rounds of showers and storms will be possible late Wednesday
through Friday. Some locally heavy rain and gusty winds will be the
primary threats with this activity. Repeated rounds of heavy rain
may lead to localized flooding.

Additionally, heat index values in the upper 90s to around 100
degrees will be possible on both Wednesday and Thursday.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

INZ050-058-059-066-073>075-080-KYZ089>100-OHZ060-061-070>072-077>081-
088-302000-
Wayne-Fayette-Union-Franklin-Ripley-Dearborn-Ohio-Switzerland-
Carroll-Gallatin-Boone-Kenton-Campbell-Owen-Grant-Pendleton-Bracken-
Robertson-Mason-Lewis-Preble-Montgomery-Butler-Warren-Clinton-
Hamilton-Clermont-Brown-Highland-Adams-Scioto-
348 PM EDT Mon Jul 29 2024

This Hazardous Weather Outlook is for east central Indiana,
southeast Indiana, northeast Kentucky, northern Kentucky, south
central Ohio, southwest Ohio and west central Ohio.

.DAY ONE...Tonight.

Storms will affect the area this evening into the overnight hours.
Heavy rain and flooding will be the main threat. Strong to severe
storms will also be possible with damaging winds possible. Also, can
not rule out the potential for a tornado.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

Several rounds of showers and storms will be possible late Wednesday
through Friday. Some locally heavy rain and gusty winds will be the
primary threats with this activity. Repeated rounds of heavy rain
may
lead to localized flooding.

Additionally, heat index values in the lower 100s will be possible
on both Wednesday and Thursday.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed.

In the hours before

Special weather statement, Jul 29, 9:59 PM EDT, 1 hour 41 minutes before

Special Weather Statement
National Weather Service Wilmington OH
959 PM EDT Mon Jul 29 2024

OHZ051-060-061-300230-
Montgomery OH-Preble OH-Miami OH-
959 PM EDT Mon Jul 29 2024

...A STRONG THUNDERSTORM WILL IMPACT PORTIONS OF NORTHEASTERN
PREBLE...SOUTHEASTERN DARKE...NORTHERN MONTGOMERY AND SOUTHWESTERN
MIAMI COUNTIES THROUGH 1030 PM EDT...

At 959 PM EDT, a strong thunderstorm was located near Lewisburg,
moving east at 35 mph.

HAZARD...Wind gusts up to 40 mph, penny size hail, and very heavy
         rain.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects. Hail may cause minor damage to
         vegetation. Visibility will be poor and hydroplaning is
         possible.

Locations impacted include...
Dayton, Trotwood, Vandalia, Englewood, Eaton, West Milton, Lewisburg,
West Alexandria, Clayton, Union, Brookville, New Lebanon, Shiloh,
Phillipsburg, Verona, Fort Mckinley, Northview, Interstate 70 at US
Route 127, Drexel, and Pyrmont.

This includes the following Interstates...
 I-70 in Ohio between mile markers 10 and 32.
 I-75 in Ohio between mile markers 52 and 58.

If outdoors, consider seeking shelter inside a sturdy building.

Motorists should slow down and use extra caution.

To report hazardous weather conditions, go to our website at
weather.gov/iln and submit your report via social media, when you can
do so safely.

&&

LAT...LON 3987 8464 3992 8446 3992 8443 3993 8443
      3997 8428 3974 8413 3969 8460
TIME...MOT...LOC 0159Z 257DEG 29KT 3980 8454

MAX HAIL SIZE...0.75 IN
MAX WIND GUST...40 MPH

Aiena

Special weather statement, Jul 29, 10:22 PM EDT, 1 hour 18 minutes before

Special Weather Statement
National Weather Service Wilmington OH
1022 PM EDT Mon Jul 29 2024

INZ050-059-OHZ060-070-300245-
Wayne IN-Union IN-Butler OH-Preble OH-
1022 PM EDT Mon Jul 29 2024

...A STRONG THUNDERSTORM WILL IMPACT PORTIONS OF SOUTHEASTERN WAYNE
AND CENTRAL UNION COUNTIES IN EAST CENTRAL INDIANA...SOUTHERN PREBLE
COUNTY IN WEST CENTRAL OHIO AND NORTHWESTERN BUTLER COUNTIES IN
SOUTHWESTERN OHIO THROUGH 1045 PM EDT...

At 1021 PM EDT, a strong thunderstorm was located 7 miles south of
Richmond, moving southeast at 20 mph.

HAZARD...Wind gusts up to 45 mph, pea size hail, and very heavy
         rain.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects. Hail may cause minor damage to
         vegetation. Visibility will be poor and hydroplaning is
         possible.

Locations impacted include...
Richmond, Oxford, Eaton, Liberty, Camden, West Alexandria, West
College Corner, Salem, Abington, College Corner, Spring Grove,
Boston, Richmond Municipal Airport, Whitewater State Park, Goodwins
Corner, Oklahoma, West Florence, Cottage Grove, Morning Sun, and
Wheatville.

This includes the following Interstates...
 I-70 in Indiana between mile markers 153 and 156.
 I-70 in Ohio between mile markers 0 and 3.

If outdoors, consider seeking shelter inside a sturdy building.

Motorists should slow down and use extra caution.

To report hazardous weather conditions, go to our website at
weather.gov/iln and submit your report via social media, when you can
do so safely.

&&

LAT...LON 3963 8500 3980 8499 3987 8487 3976 8453
      3961 8459 3950 8475
TIME...MOT...LOC 0221Z 300DEG 17KT 3973 8485

MAX HAIL SIZE...0.25 IN
MAX WIND GUST...45 MPH

Aiena

Special weather statement, Jul 29, 10:29 PM EDT, 1 hour 11 minutes before

Special Weather Statement
National Weather Service Wilmington OH
1029 PM EDT Mon Jul 29 2024

OHZ070-300300-
Butler OH-
1029 PM EDT Mon Jul 29 2024

...A STRONG THUNDERSTORM WILL IMPACT PORTIONS OF SOUTHERN BUTLER
COUNTY THROUGH 1100 PM EDT...

At 1028 PM EDT, a strong thunderstorm was located near Hamilton,
moving east at 20 mph.

HAZARD...Wind gusts up to 45 mph and half inch hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects. Hail may cause minor damage to
         vegetation.

Locations impacted include...
Hamilton, Middletown, Fairfield, Monroe, Trenton, South Middletown,
West Chester, Ross, Seven Mile, Williamsdale, Olde West Chester,
Wetherington, New Miami, Millville, Hughes, Maud, Beckett Ridge,
Maustown, Mcgonigle, and St. Charles.

This includes I-75 in Ohio between mile markers 18 and 22.

If outdoors, consider seeking shelter inside a sturdy building.

To report hazardous weather conditions, go to our website at
weather.gov/iln and submit your report via social media, when you can
do so safely.

&&

LAT...LON 3933 8475 3948 8475 3949 8438 3930 8438
TIME...MOT...LOC 0228Z 274DEG 19KT 3941 8467

MAX HAIL SIZE...0.50 IN
MAX WIND GUST...45 MPH

Hatzos

Special weather statement, Jul 29, 11:03 PM EDT, 37 minutes before

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Local storm report, Jul 29, 11:26 PM EDT, 14 minutes before

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Special weather statement, Jul 29, 11:26 PM EDT, 14 minutes before

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The office that day

Everything else NWS Wilmington, OH issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 29, 8:16 PM EDT	Special Weather Statement	ILN	Greene	29 min
Jul 29, 9:50 PM EDT	Areal Flood Advisory	ILN	Preble	68 min
Jul 29, 9:51 PM EDT	Tornado Warning	ILN	Butler	39 min
Jul 29, 9:59 PM EDT	Special Weather Statement	ILN	Montgomery	31 min
Jul 29, 10:22 PM EDT	Special Weather Statement	ILN	Preble	23 min
Jul 29, 10:29 PM EDT	Special Weather Statement	ILN	Butler	31 min
Jul 29, 10:58 PM EDT	Flash Flood Warning	ILN	Preble	4 hr
Jul 29, 11:03 PM EDT	Special Weather Statement	ILN	Fayette	27 min
Jul 29, 11:17 PM EDT	Areal Flood Advisory	ILN	Preble	4 hr
Jul 29, 11:26 PM EDT	Special Weather Statement	ILN	Fayette	34 min
Jul 29, 11:49 PM EDT	Special Weather Statement	ILN	Butler	26 min
Jul 29, 11:55 PM EDT	Areal Flood Advisory	ILN	Butler, Montgomery, Warren	3 hr
Jul 29, 11:56 PM EDT	Areal Flood Advisory	ILN	Darke, Preble	8 hr
Jul 29, 11:57 PM EDT	Special Weather Statement	ILN	Madison	48 min
Jul 30, 12:44 AM EDT	Special Weather Statement	ILN	Butler, Preble	46 min
Jul 30, 12:50 AM EDT	Flash Flood Warning Considerable damage threat	ILN	Preble	107 min
Jul 30, 1:04 AM EDT	Special Weather Statement	ILN	Butler, Hamilton, Warren	56 min
Jul 30, 1:10 AM EDT	Flash Flood Warning	ILN	Butler, Montgomery, Warren	88 min
Jul 30, 1:14 AM EDT	Areal Flood Advisory	ILN	Butler, Warren	7 hr
Jul 30, 1:19 AM EDT	Severe Thunderstorm Warning	ILN	Butler, Montgomery, Warren	41 min
Jul 30, 1:37 AM EDT	Severe Thunderstorm Warning	ILN	Brown, Clermont, Clinton, Highland, Warren	38 min
Jul 30, 1:48 AM EDT	Tornado Warning	ILN	Clinton	27 min
Jul 30, 1:55 AM EDT	Areal Flood Advisory	ILN	Butler, Warren	6 hr
Jul 30, 1:55 AM EDT	Tornado Warning	ILN	Clinton, Highland	22 min
Jul 30, 2:09 AM EDT	Severe Thunderstorm Warning	ILN	Brown, Clinton, Fayette, Highland	35 min
Jul 30, 2:34 AM EDT	Areal Flood Advisory	ILN	Preble	5 hr
Jul 30, 2:35 AM EDT	Areal Flood Advisory	ILN	Preble	5 hr
Jul 30, 2:36 AM EDT	Special Weather Statement	ILN	Ross	24 min
Jul 30, 2:37 AM EDT	Areal Flood Advisory	ILN	Preble	5 hr
Jul 30, 2:38 AM EDT	Areal Flood Advisory	ILN	Butler, Montgomery, Warren	5 hr
Jul 30, 3:18 AM EDT	Severe Thunderstorm Warning	ILN	Adams, Brown, Scioto	57 min
Jul 30, 3:59 AM EDT	Special Weather Statement	ILN	Scioto	31 min
Jul 30, 4:18 AM EDT	Severe Thunderstorm Warning	ILN	Scioto	29 min
Jul 30, 2:15 AM EDT	Special Weather Statement	ILN	Bracken, Grant, Pendleton	45 min
Jul 30, 3:00 AM EDT	Special Weather Statement	ILN	Mason	45 min
Jul 29, 8:24 PM EDT	Severe Thunderstorm Warning	ILN	Wayne	36 min
Jul 29, 8:26 PM EDT	Severe Thunderstorm Warning	ILN	Fayette, Franklin, Union	34 min
Jul 29, 8:56 PM EDT	Severe Thunderstorm Warning	ILN	Fayette, Wayne	49 min
Jul 29, 8:58 PM EDT	Special Weather Statement	ILN	Franklin	32 min
Jul 29, 9:00 PM EDT	Tornado Warning	ILN	Fayette, Wayne	30 min
Jul 29, 9:05 PM EDT	Tornado Warning	ILN	Franklin	25 min
Jul 29, 9:28 PM EDT	Tornado Warning	ILN	Fayette, Union, Wayne	32 min
Jul 29, 9:29 PM EDT	Special Weather Statement	ILN	Franklin	31 min
Jul 29, 9:49 PM EDT	Severe Thunderstorm Warning	ILN	Fayette, Union, Wayne	41 min
Jul 30, 12:06 AM EDT	Special Weather Statement	ILN	Wayne	39 min
Jul 30, 3:38 AM EDT	River Flood Warning	ILN	Union, Wayne	3 hr

Nearby

Flash Flood Warnings in Ohio, 2024 Flash Flood Warnings in Indiana, 2024 Every flash flood warning in 2024

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.