Alert archive / Virginia / Flash Flood Warnings in 2023

Flash Flood Warning 45, NWS Wakefield, VA

July 23, 2023Fluvanna County, Virginia

NWS Wakefield, VA issued this flash flood warning at Jul 23, 2023, 4:12 PM EDT for Fluvanna County, Virginia. It was in force for 108 min. 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 23, 2023, 4:12 PM EDT (20:12 UTC)
Expired: Jul 23, 2023, 6:00 PM EDT
In force: 108 min
Issued by: NWS Wakefield, VA
Area: Storm-based polygon
Flood severity: None

County Fluvanna County, VA

The radar

The Sterling radar (KLWX), 144 km from the middle of the area, began a volume at 20:15 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

Roanoke, VA (KRNK), launched 12:00Z, 8.2 hours before the alert went out and 129 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: 385 J/kg
Mixed-layer CIN: -21 J/kg
Mixed-layer LCL: 786 m above ground
0-6 km bulk shear: 35 kt
0-1 km storm-relative helicity: 22 m²/s²
0-3 km storm-relative helicity: 55 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

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 Wakefield, VA wrote its last area forecast discussion before this flash flood warning went out at Jul 23, 3:50 PM EDT, 22 minutes earlier.

Area forecast discussion, Jul 23, 3:50 PM EDT, 22 minutes before

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Hazardous weather outlook, Jul 23, 3:57 PM EDT, 15 minutes before

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The office that day

Everything else NWS Wakefield, VA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 23, 3:08 PM EDT	Areal Flood Advisory	AKQ	Fluvanna	112 min
Jul 23, 3:47 PM EDT	Areal Flood Advisory	AKQ	Fluvanna	25 min
Jul 23, 4:30 PM EDT	Areal Flood Advisory	AKQ	Fluvanna	2 hr
Jul 23, 7:48 PM EDT	Special Weather Statement	AKQ	Hanover	27 min

Nearby

Flash Flood Warnings in Virginia, 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.