Alert archive / Ohio / Flash Flood Warnings in 2022

Flash Flood Warning 21, NWS Pittsburgh, PA

August 21, 2022Muskingum County, Ohio

NWS Pittsburgh, PA issued this flash flood warning at Aug 21, 2022, 3:10 PM EDT for Muskingum County, Ohio. It was in force for 2 hr. 1 report 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
Aug 21, 2022, 3:10 PM EDT (19:10 UTC)
Expired
Aug 21, 2022, 5:15 PM EDT
In force
2 hr
Issued by
NWS Pittsburgh, PA
Area
Storm-based polygon
Flood severity
None

County Muskingum County, OH

The radar

The Pittsburgh radar (KPBZ), 154 km from the middle of the area, began a volume at 19:10 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

TimeReportWhereRemark
Aug 21, 4:30 PM EDTFLASH FLOODZanesville, OHREPORT OF LOCUS AVENUE FLOODED NEAR SR 60 FROM HEAVY RAINS. MINOR FLOODING ALSO SEEN ALONG SMALL PORTIONS OF I-70 AND US40 AS A RESULT OF NEARBY CONSTRUCTION.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Detroit, MI (KDTX), launched 12:00Z, 7.2 hours before the alert went out and 332 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-pSkew-T log-p diagram, Detroit, MI at 12:00Z on 2022-08-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 29 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Detroit, MI at 12:00Z on 2022-08-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 67 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
29 J/kg
Mixed-layer CIN
-17 J/kg
Mixed-layer LCL
811 m above ground
0-6 km bulk shear
26 kt
0-1 km storm-relative helicity
67 m²/s²
0-3 km storm-relative helicity
123 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

587 
WGUS51 KPBZ 211910
FFWPBZ
OHC119-212115-
/O.NEW.KPBZ.FF.W.0021.220821T1910Z-220821T2115Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Pittsburgh PA
310 PM EDT Sun Aug 21 2022

The National Weather Service in Pittsburgh has issued a

* Flash Flood Warning for...
  Central Muskingum County in east central Ohio...

* Until 515 PM EDT.

* At 310 PM EDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Between 1.5 and 2 inches of 
  rain have fallen. The expected rainfall rate is 2 inches in 1 
  hour. 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 will experience flash flooding include...
  Zanesville, South Zanesville, North Zanesville, Pleasant Grove, 
  Norwich, Bridgeville and Duncan Falls.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood 
deaths occur in vehicles.

&&

LAT...LON 4000 8199 4003 8190 4003 8187 4004 8184
      4004 8179 4002 8178 4002 8177 4001 8176
      3999 8179 3998 8179 3997 8181 3994 8183
      3989 8191 3988 8193 3987 8197 3987 8201
      3988 8202 3997 8202

FLASH FLOOD...RADAR INDICATED
EXPECTED RAINFALL RATE...1-2 INCHES IN 1 HOUR

$$
2 follow-up statements
216 
WGUS71 KPBZ 211938
FFSPBZ

Flash Flood Statement
National Weather Service Pittsburgh PA
338 PM EDT Sun Aug 21 2022

OHC119-212115-
/O.CON.KPBZ.FF.W.0021.000000T0000Z-220821T2115Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Muskingum OH-
338 PM EDT Sun Aug 21 2022

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 515 PM EDT THIS 
AFTERNOON FOR CENTRAL MUSKINGUM COUNTY...

At 338 PM EDT, Radar indicated that thunderstorms had produced 
between 2 and 3 inches of rain.  Additional rainfall amounts of 0.2 
to 0.5 inches are possible in the warned area.


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 will experience flash flooding include...
  Zanesville, South Zanesville, North Zanesville, Pleasant Grove, 
  Norwich, Bridgeville and Duncan Falls.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Be aware of your surroundings and do not drive on flooded roads.

&&

LAT...LON 4000 8199 4003 8190 4003 8187 4004 8184
      4004 8179 4002 8178 4002 8177 4001 8176
      3999 8179 3998 8179 3997 8181 3994 8183
      3989 8191 3988 8193 3987 8197 3987 8201
      3988 8202 3997 8202

FLASH FLOOD...RADAR INDICATED

$$
679 
WGUS71 KPBZ 212109
FFSPBZ

Flash Flood Statement
National Weather Service Pittsburgh PA
509 PM EDT Sun Aug 21 2022

OHC119-212119-
/O.EXP.KPBZ.FF.W.0021.000000T0000Z-220821T2115Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Muskingum OH-
509 PM EDT Sun Aug 21 2022

...FLASH FLOOD WARNING WILL EXPIRE AT 515 PM EDT THIS AFTERNOON FOR 
CENTRAL MUSKINGUM COUNTY...

The heavy rain has ended, although showers remain in the area.  
Please continue to heed remaining road closures and be alert for 
future warnings.

LAT...LON 4000 8199 4003 8190 4003 8187 4004 8184
      4004 8179 4002 8178 4002 8177 4001 8176
      3999 8179 3998 8179 3997 8181 3994 8183
      3989 8191 3988 8193 3987 8197 3987 8201
      3988 8202 3997 8202

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 20, 8:01 PM EDTSevere Thunderstorm WarningPBZCoshocton, Guernsey, Tuscarawas44 min
Aug 20, 8:02 PM EDTSevere Thunderstorm WarningPBZMuskingum43 min
Aug 20, 8:38 PM EDTSpecial Weather StatementPBZGuernsey37 min
Aug 20, 8:40 PM EDTSevere Thunderstorm WarningPBZCarroll, Harrison, Tuscarawas50 min
Aug 20, 8:41 PM EDTSevere Thunderstorm WarningPBZBelmont, Guernsey, Monroe, Noble49 min
Aug 20, 9:26 PM EDTSevere Thunderstorm WarningPBZBelmont, Carroll, Harrison, Jefferson, Monroe49 min
Aug 20, 9:49 PM EDTSpecial Weather StatementPBZColumbiana41 min
Aug 21, 3:06 PM EDTSevere Thunderstorm WarningPBZMuskingum39 min
Aug 21, 4:16 PM EDTSpecial Weather StatementPBZGuernsey29 min
Aug 21, 5:02 PM EDTSpecial Weather StatementPBZMonroe28 min

Nearby

Flash Flood Warnings in Ohio, 2022Every flash flood warning in 2022

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.