Alert archive / Ohio / Flash Flood Warnings in 2023

Flash Flood Warning 23, NWS Pittsburgh, PA

July 29, 20234 counties in Ohio

NWS Pittsburgh, PA issued this flash flood warning at Jul 29, 2023, 5:30 AM EDT for 4 counties in Ohio. 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, 2023, 5:30 AM EDT (09:30 UTC)
Expired: Jul 29, 2023, 8:19 AM EDT
In force: 3 hr
Issued by: NWS Pittsburgh, PA
Area: Storm-based polygon
Flood severity: None

Counties Belmont County, OH, Guernsey County, OH, Harrison County, OH, Tuscarawas County, OH

The radar

The Pittsburgh radar (KPBZ), 96 km from the middle of the area, began a volume at 09:29 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, 9.5 hours before the alert went out and 101 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: 2554 J/kg
Mixed-layer CIN: -2 J/kg
Mixed-layer LCL: 764 m above ground
0-6 km bulk shear: 18 kt
0-1 km storm-relative helicity: 21 m²/s²
0-3 km storm-relative helicity: 38 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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 Pittsburgh, PA wrote its last area forecast discussion before this flash flood warning went out at Jul 29, 4:45 AM EDT, 45 minutes earlier.

Area forecast discussion, Jul 29, 4:45 AM EDT, 45 minutes before

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Hazardous weather outlook, Jul 29, 3:10 AM EDT, 2 hours 20 minutes before

Hazardous Weather Outlook
National Weather Service Pittsburgh PA
310 AM EDT Sat Jul 29 2023

WVZ511>514-300715-
Preston-Eastern Preston-Western Tucker-Eastern Tucker-
310 AM EDT Sat Jul 29 2023

This Hazardous Weather Outlook is for northern West Virginia.

.DAY ONE...Today and tonight.

A few severe thunderstorms are possible today, mainly this afternoon
and early evening. Damaging wind, large hail, and localized flooding
are the main hazards.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

Hazardous weather is not expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed.

OHZ059-068-069-PAZ021-029-031-WVZ002>004-012-021-509-510-300715-
Belmont-Noble-Monroe-Allegheny-Washington-Greene-Brooke-Ohio-
Marshall-Wetzel-Marion-Monongalia-
Ridges of Eastern Monongalia and Northwestern Preston-
310 AM EDT Sat Jul 29 2023

...SEVERE THUNDERSTORM WATCH 564 IN EFFECT UNTIL 11 AM EDT THIS
MORNING...

This Hazardous Weather Outlook is for east central Ohio, southwest
Pennsylvania, western Pennsylvania, and northern West Virginia.

.DAY ONE...Today and tonight.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Severe Thunderstorm Watch.

Severe thunderstorms with damaging wind and large hail are possible
this morning. There is also a potential for localized flooding.

A few severe thunderstorms are possible again this afternoon with a
crossing cold front. Damaging wind and large hail are the main
hazards, along with localized flooding.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed.

PAZ073>078-300715-
Westmoreland-Higher Elevations of Westmoreland-Fayette-
Higher Elevations of Fayette-Indiana-Higher Elevations of Indiana-
310 AM EDT Sat Jul 29 2023

This Hazardous Weather Outlook is for southwest Pennsylvania and
western Pennsylvania.

.DAY ONE...Today and tonight.

A few severe thunderstorms are possible this morning, and again this
afternoon through early evening. Damaging wind and possibly large
hail are the main hazards. There is also a potential for localized
flooding.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

Hazardous weather is not expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed.

OHZ039>041-048>050-057-058-PAZ007-008-013-014-020-WVZ001-300715-
Tuscarawas-Carroll-Columbiana-Coshocton-Harrison-Jefferson OH-
Muskingum-Guernsey-Mercer-Venango-Lawrence-Butler-Beaver-Hancock-
310 AM EDT Sat Jul 29 2023

...SEVERE THUNDERSTORM WATCH 564 IN EFFECT UNTIL 11 AM EDT THIS
MORNING...

This Hazardous Weather Outlook is for east central Ohio, western
Pennsylvania and northern West Virginia.

.DAY ONE...Today and tonight.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Severe Thunderstorm Watch.

Severe thunderstorms with damaging wind and large hail are possible
this morning. There is also a potential for localized flooding.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

Hazardous weather is not expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed.

PAZ009-015-016-022-300715-
Forest-Clarion-Jefferson PA-Armstrong-
310 AM EDT Sat Jul 29 2023

This Hazardous Weather Outlook is for northwest Pennsylvania and
western Pennsylvania.

.DAY ONE...Today and tonight.

Localized flooding and gusty wind are possible with thunderstorms
this morning, and again this afternoon.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

Hazardous weather is not expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed.

WM

In the hours before

Special weather statement, Jul 29, 2:19 AM EDT, 3 hours 11 minutes before

Special Weather Statement
National Weather Service Pittsburgh PA
219 AM EDT Sat Jul 29 2023

OHZ039-048-057-058-290700-
Guernsey OH-Tuscarawas OH-Coshocton OH-Muskingum OH-
219 AM EDT Sat Jul 29 2023

...A STRONG THUNDERSTORM WILL IMPACT NORTHWESTERN GUERNSEY...
SOUTHEASTERN COSHOCTON...NORTHEASTERN MUSKINGUM AND SOUTH CENTRAL
TUSCARAWAS COUNTIES THROUGH 300 AM EDT...

At 219 AM EDT, Doppler radar was tracking a strong thunderstorm near
Dresden, or 8 miles northeast of Zanesville, moving east at 25 mph.

HAZARD...Wind gusts up to 40 mph and pea size hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects. Minor hail damage to vegetation is
         possible.

Locations impacted include...
Zanesville, Cambridge, Newcomerstown, New Concord, Byesville, North
Zanesville, Dresden, Conesville, Old Washington, Plainfield, Norwich,
Otsego, Drake, Boden, Salt Fork State Park, and Kimbolton.

This includes the following highways...
  Interstate 70 in Ohio between mile markers 168 and 187.
  Interstate 77 in Ohio between mile markers 44 and 65.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

Torrential rainfall is also occurring with this storm and may lead to
localized flooding. Do not drive your vehicle through flooded
roadways.

&&

LAT...LON 3997 8200 4012 8208 4031 8153 3999 8141
TIME...MOT...LOC 0619Z 254DEG 20KT 4007 8193

MAX HAIL SIZE...0.25 IN
MAX WIND GUST...40 MPH

Shallenberger

Special weather statement, Jul 29, 2:25 AM EDT, 3 hours 5 minutes before

Special Weather Statement
National Weather Service Pittsburgh PA
225 AM EDT Sat Jul 29 2023

OHZ039-048-057-058-290715-
Guernsey OH-Tuscarawas OH-Coshocton OH-Muskingum OH-
225 AM EDT Sat Jul 29 2023

...A STRONG THUNDERSTORM WILL IMPACT NORTHWESTERN GUERNSEY...
SOUTHEASTERN COSHOCTON...NORTHERN MUSKINGUM AND SOUTHWESTERN
TUSCARAWAS COUNTIES THROUGH 315 AM EDT...

At 225 AM EDT, Doppler radar was tracking a strong thunderstorm near
Coshocton, moving east at 20 mph.

HAZARD...Wind gusts up to 40 mph and pea size hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects. Minor hail damage to vegetation is
         possible.

Locations impacted include...
Coshocton, Newcomerstown, West Lafayette, Port Washington,
Conesville, Stone Creek, Plainfield, Chili, and Bakersville.

This includes Interstate 77 in Ohio between mile markers 58 and 75.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

Torrential rainfall is also occurring with this storm and may lead to
localized flooding. Do not drive your vehicle through flooded
roadways.

&&

LAT...LON 4014 8194 4029 8204 4045 8153 4019 8149
TIME...MOT...LOC 0625Z 260DEG 19KT 4020 8193

MAX HAIL SIZE...0.25 IN
MAX WIND GUST...40 MPH

Shallenberger

Special weather statement, Jul 29, 3:42 AM EDT, 1 hour 48 minutes before

Special Weather Statement
National Weather Service Pittsburgh PA
342 AM EDT Sat Jul 29 2023

OHZ039>041-049-050-290830-
Jefferson OH-Tuscarawas OH-Harrison OH-Columbiana OH-Carroll OH-
342 AM EDT Sat Jul 29 2023

...A STRONG THUNDERSTORM WILL IMPACT HARRISON...NORTHWESTERN
JEFFERSON...SOUTHWESTERN COLUMBIANA...CARROLL AND TUSCARAWAS COUNTIES
THROUGH 430 AM EDT...

At 342 AM EDT, Doppler radar was tracking a strong thunderstorm over
New Philadelphia, moving east at 30 mph.

HAZARD...Wind gusts up to 40 mph and pea size hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects. Minor hail damage to vegetation is
         possible.

Locations impacted include...
New Philadelphia, Dover, Uhrichsville, Cadiz, Carrollton, Minerva,
Dennison, Strasburg, Sugarcreek, Augusta, Salineville, Gnadenhutten,
Malvern, Tuscarawas, Hopedale, Scio, Midvale, Mineral City, Jewett,
and Bergholz.

This includes Interstate 77 in Ohio between mile markers 75 and 92.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

Torrential rainfall is also occurring with this storm and may lead to
localized flooding. Do not drive your vehicle through flooded
roadways.

A Severe Thunderstorm Watch remains in effect until 1100 AM EDT for
east central Ohio.

&&

LAT...LON 4058 8166 4065 8141 4065 8124 4071 8124
      4073 8115 4073 8109 4075 8109 4076 8105
      4053 8073 4023 8096 4022 8155 4041 8153
      4051 8167
TIME...MOT...LOC 0742Z 262DEG 28KT 4046 8147

MAX HAIL SIZE...0.25 IN
MAX WIND GUST...40 MPH

Shallenberger

The office that day

Everything else NWS Pittsburgh, PA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 28, 8:50 PM EDT	Special Weather Statement	PBZ	Allegheny	25 min
Jul 28, 9:49 PM EDT	Areal Flood Advisory	PBZ	Allegheny, Armstrong, Indiana, Westmoreland	3 hr
Jul 29, 6:33 AM EDT	Special Weather Statement	PBZ	Beaver, Lawrence	42 min
Jul 29, 4:25 AM EDT	Flash Flood Warning	PBZ	Marion, Wetzel	80 min
Jul 29, 7:58 AM EDT	Areal Flood Advisory	PBZ	Brooke, Marshall, Ohio	2 hr
Jul 29, 2:19 AM EDT	Special Weather Statement	PBZ	Guernsey	41 min
Jul 29, 2:25 AM EDT	Special Weather Statement	PBZ	Coshocton	50 min
Jul 29, 2:37 AM EDT	Severe Thunderstorm Warning	PBZ	Coshocton, Guernsey, Muskingum, Tuscarawas	38 min
Jul 29, 3:42 AM EDT	Special Weather Statement	PBZ	Carroll, Harrison, Tuscarawas	48 min
Jul 29, 4:35 AM EDT	Flash Flood Warning	PBZ	Coshocton, Tuscarawas	3 hr
Jul 29, 5:40 AM EDT	Severe Thunderstorm Warning	PBZ	Carroll, Coshocton, Guernsey, Muskingum, Tuscarawas	65 min

Nearby

Flash Flood Warnings in Ohio, 2023 Every flash flood warning in 2023

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.