Alert archive / Ohio / Areal Flood Warnings in 2021

Areal Flood Warning 21, NWS Wilmington, OH

August 17, 2021Fairfield County, Franklin County, Licking County, Ohio

NWS Wilmington, OH issued this areal flood warning at Aug 17, 2021, 2:45 PM EDT for Fairfield County, Franklin County, Licking County, Ohio. It was in force for 5 hr. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Aug 17, 2021, 2:45 PM EDT (18:45 UTC)
Expired: Aug 17, 2021, 8:00 PM EDT
In force: 5 hr
Issued by: NWS Wilmington, OH
Area: Storm-based polygon
Flood severity: None

Counties Fairfield County, OH, Franklin County, OH, Licking County, OH

The radar

The Cincinnati radar (KILN), 104 km from the middle of the area, began a volume at 18:47 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 12:00Z, 6.8 hours before the alert went out and 239 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: 210 J/kg
Mixed-layer CIN: -22 J/kg
Mixed-layer LCL: 752 m above ground
0-6 km bulk shear: 23 kt
0-1 km storm-relative helicity: 31 m²/s²
0-3 km storm-relative helicity: 79 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

Open this sounding in Storm Lab

The text

As transmitted.

802 
WGUS41 KILN 171845
FLWILN

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Flood Warning
National Weather Service Wilmington OH
245 PM EDT Tue Aug 17 2021

OHC045-049-089-180000-
/O.NEW.KILN.FA.W.0021.210817T1845Z-210818T0000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Fairfield OH-Franklin OH-Licking OH-
245 PM EDT Tue Aug 17 2021

The National Weather Service in Wilmington has issued a

* Flood Warning for...
  Northwestern Fairfield County in central Ohio...
  Eastern Franklin County in central Ohio...
  Southwestern Licking County in central Ohio...

* Until 800 PM EDT.

* At 245 PM EDT, flooding is ongoing in the warned area. Between 3 
  and 5 inches of rain have fallen, with some additional rainfall 
  possible this afternoon.

* Some locations that may experience flooding include...
  Reynoldsburg, Summit Station, Jersey, Blacklick Estates, Gahanna, 
  Columbus, Grove City, Pickerington, Bexley, Pataskala, Canal 
  Winchester, Groveport, Johnstown, Beechwood Trails, Whitehall, 
  Etna, New Albany, Obetz, Urbancrest and Brice.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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

&&

LAT...LON 3981 8313 3991 8311 4013 8278 4013 8276
      4014 8276 4017 8272 4016 8266 3993 8267
      3980 8294

$$

Hatzos

1 follow-up statement

516 
WGUS81 KILN 172351
FLSILN

Flood Statement
National Weather Service Wilmington OH
751 PM EDT Tue Aug 17 2021

OHC045-049-089-180001-
/O.EXP.KILN.FA.W.0021.000000T0000Z-210818T0000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Fairfield OH-Franklin OH-Licking OH-
751 PM EDT Tue Aug 17 2021

...FLOOD WARNING WILL EXPIRE AT 8 PM EDT THIS EVENING FOR 
NORTHWESTERN FAIRFIELD, EASTERN FRANKLIN OH AND SOUTHWESTERN LICKING 
COUNTIES IN CENTRAL OHIO...

Flood waters have receded. Flooding is no longer expected to pose a 
threat. Please continue to heed remaining road closures.

LAT...LON 3981 8313 3991 8311 4013 8278 4013 8276
      4014 8276 4017 8272 4016 8266 3993 8267
      3980 8294

$$

Hatzos

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 16, 8:53 PM EDT	Areal Flood Advisory	ILN	Fayette	2 hr
Aug 17, 10:22 AM EDT	Areal Flood Advisory	ILN	Delaware, Franklin, Licking	4 hr
Aug 17, 10:42 AM EDT	Areal Flood Advisory	ILN	Fayette, Franklin, Madison, Pickaway	119 min
Aug 17, 11:02 AM EDT	Flash Flood Warning	ILN	Fairfield, Franklin, Licking	4 hr
Aug 17, 4:36 PM EDT	Areal Flood Advisory	ILN	Butler, Hamilton, Warren	4 hr
Aug 17, 5:52 PM EDT	Areal Flood Advisory	ILN	Hamilton	3 hr

Nearby

Areal Flood Warnings in Ohio, 2021 Every areal 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.