Alert archive / Virginia / Flash Flood Warnings in 2022

Flash Flood Warning 2, NWS Baltimore/Washington

May 15, 2022Albemarle County, City of Charlottesville, Virginia

NWS Baltimore/Washington issued this flash flood warning at May 15, 2022, 2:37 PM EDT for Albemarle County, City of Charlottesville, Virginia. It was in force for 39 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: May 15, 2022, 2:37 PM EDT (18:37 UTC)
Expired: May 15, 2022, 3:16 PM EDT
In force: 39 min
Issued by: NWS Baltimore/Washington
Area: Storm-based polygon
Damage threat: Considerable
Flood severity: None

Counties Albemarle County, VA, City of Charlottesville, VA

The radar

The Sterling radar (KLWX), 138 km from the middle of the area, began a volume at 18:38 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

Washington/Dulle, VA (KIAD), launched 12:00Z, 6.6 hours before the alert went out and 141 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: 5 J/kg
Mixed-layer CIN: -148 J/kg
Mixed-layer LCL: 686 m above ground
0-6 km bulk shear: 12 kt
0-1 km storm-relative helicity: 44 m²/s²
0-3 km storm-relative helicity: 48 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 Baltimore/Washington wrote its last area forecast discussion before this flash flood warning went out at May 15, 10:11 AM EDT, 4 hours 26 minutes earlier.

Area forecast discussion, May 15, 10:11 AM EDT, 4 hours 26 minutes before

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Hazardous weather outlook, May 15, 10:59 AM EDT, 3 hours 38 minutes before

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The office that day

Everything else NWS Baltimore/Washington issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 14, 10:45 PM EDT	Dense Fog Advisory	LWX	Albemarle, Amherst, Arlington, Augusta, Clarke, Culpeper and 27 more	10 hr
May 15, 3:03 AM EDT	Small Craft Advisory	LWX		45 hr
May 15, 2:21 PM EDT	Areal Flood Warning	LWX	Albemarle, City of Charlottesville	5 hr
May 15, 6:06 PM EDT	Severe Thunderstorm Warning	LWX	Culpeper, Fauquier, Rappahannock	19 min
May 15, 7:28 PM EDT	Areal Flood Warning	LWX	Fairfax, Prince William, City of Fairfax	2 hr

Nearby

Flash Flood Warnings in Virginia, 2022 Every 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.