Alert archive / Kentucky / Flash Flood Warnings in 2019

Flash Flood Warning 42, NWS Wilmington, OH

August 31, 2019Grant County, Owen County, Pendleton County, Kentucky

NWS Wilmington, OH issued this flash flood warning at Aug 31, 2019, 5:36 PM EDT for Grant County, Owen County, Pendleton County, Kentucky. 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: Aug 31, 2019, 5:36 PM EDT (21:36 UTC)
Expired: Aug 31, 2019, 8:30 PM EDT
In force: 3 hr
Issued by: NWS Wilmington, OH
Area: Storm-based polygon
Flood severity: None

Counties Grant County, KY, Owen County, KY, Pendleton County, KY

The radar

The Cincinnati radar (KILN), 112 km from the middle of the area, began a volume at 21:36 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 12:00Z, 9.6 hours before the alert went out and 114 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1262 m above ground
0-6 km bulk shear: 34 kt
0-1 km storm-relative helicity: 20 m²/s²
0-3 km storm-relative helicity: 51 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.4

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 Aug 31, 3:49 PM EDT, 1 hour 47 minutes earlier.

Area forecast discussion, Aug 31, 3:49 PM EDT, 1 hour 47 minutes before

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Hazardous weather outlook, Aug 31, 9:15 AM EDT, 8 hours 21 minutes before

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In the hours before

Local storm report, Aug 31, 2:42 PM EDT, 2 hours 54 minutes before

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Special weather statement, Aug 31, 4:59 PM EDT, 37 minutes before

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Special weather statement, Aug 31, 5:29 PM EDT, 7 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
Aug 31, 4:59 PM EDT	Special Weather Statement	ILN	Grant, Owen	31 min
Aug 31, 5:23 PM EDT	Areal Flood Advisory	ILN	Grant, Owen	17 min
Aug 31, 5:29 PM EDT	Special Weather Statement	ILN	Grant, Owen	31 min

Nearby

Flash Flood Warnings in Kentucky, 2019 Every flash flood warning in 2019

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.