Alert archive / Virginia / Flash Flood Warnings in 2021

Flash Flood Warning 46, NWS Wakefield, VA

August 15, 20215 counties in Virginia

NWS Wakefield, VA issued this flash flood warning at Aug 15, 2021, 7:44 PM EDT for 5 counties in Virginia. It was in force for 3 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 15, 2021, 7:44 PM EDT (23:44 UTC)
Expired: Aug 15, 2021, 10:30 PM EDT
In force: 3 hr
Issued by: NWS Wakefield, VA
Area: Storm-based polygon
Flood severity: None

Counties Charles City County, VA, Chesterfield County, VA, City of Colonial Heights, VA, City of Hopewell, VA, Prince George County, VA

The radar

The Norfolk radar (KAKQ), 48 km from the middle of the area, began a volume at 23:43 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

Time	Report	Where	Remark
Aug 15, 8:45 PM EDT	FLASH FLOOD	1 Ene Ettrick, VA	REPORTS OF HIGH WATER AT THE INTERSECTION OF RIVER RD AND DUPUY AVE.

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

The nearest sounding before it

Washington/Dulle, VA (KIAD), launched 12:00Z, 11.7 hours before the alert went out and 178 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: 1116 m above ground
0-6 km bulk shear: 15 kt
0-1 km storm-relative helicity: -13 m²/s²
0-3 km storm-relative helicity: 58 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

494 
WGUS51 KAKQ 152344
FFWAKQ
VAC036-041-149-570-670-160230-
/O.NEW.KAKQ.FF.W.0046.210815T2344Z-210816T0230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Wakefield VA
744 PM EDT Sun Aug 15 2021

The National Weather Service in Wakefield has issued a

* Flash Flood Warning for...
  Southeastern Chesterfield County in central Virginia...
  The City of Colonial Heights in central Virginia...
  West Central Charles City County in east central Virginia...
  Northwestern Prince George County in south central Virginia...
  The City of Hopewell in south central Virginia...

* Until 1030 PM EDT.

* At 744 PM EDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Between 1 and 3 inches of rain 
  have fallen. Additional rainfall amounts of 0.5 to 1.5 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...
  Petersburg, Hopewell, Colonial Heights, Fort Lee, Chester, 
  Virginia State University, Jordans Point, Ettrick, Jordan Point 
  Country Club and Wayside.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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

Please report observed flooding to local emergency services or law 
enforcement and request they pass this information to the National 
Weather Service when you can do so safely.

&&

LAT...LON 3733 7746 3737 7731 3735 7729 3735 7727
      3738 7726 3738 7723 3739 7722 3740 7718
      3731 7715 3723 7742

FLASH FLOOD...RADAR INDICATED

$$

Rogers

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 14, 8:13 PM EDT	Special Weather Statement	AKQ	Southampton, City of Franklin	47 min
Aug 14, 8:32 PM EDT	Special Weather Statement	AKQ	Goochland	43 min
Aug 14, 8:34 PM EDT	Special Marine Warning	AKQ		56 min
Aug 14, 9:17 PM EDT	Special Weather Statement	AKQ	Amelia, Cumberland, Goochland, Powhatan	43 min
Aug 14, 10:01 PM EDT	Areal Flood Advisory	AKQ	Hanover, King William	119 min
Aug 14, 10:46 PM EDT	Flash Flood Warning	AKQ	Hanover	2 hr
Aug 14, 10:59 PM EDT	Areal Flood Advisory	AKQ	Hanover, Henrico	2 hr
Aug 15, 2:45 PM EDT	Special Weather Statement	AKQ	City of Chesapeake	45 min
Aug 15, 3:20 PM EDT	Special Weather Statement	AKQ	City of Chesapeake, City of Suffolk	40 min
Aug 15, 3:44 PM EDT	Special Marine Warning	AKQ		91 min
Aug 15, 4:41 PM EDT	Special Weather Statement	AKQ	King William, City of Richmond	64 min
Aug 15, 4:45 PM EDT	Areal Flood Advisory	AKQ	Chesterfield, Hanover, Henrico, City of Richmond	2 hr
Aug 15, 4:48 PM EDT	Special Weather Statement	AKQ	Greensville, City of Emporia	42 min
Aug 15, 4:56 PM EDT	Flash Flood Warning	AKQ	Chesterfield, Hanover, Henrico, City of Richmond	3 hr
Aug 15, 5:13 PM EDT	Flash Flood Warning Considerable damage threat	AKQ	Hanover, Henrico, City of Richmond	5 hr
Aug 15, 5:38 PM EDT	Special Weather Statement	AKQ	Brunswick, Dinwiddie, Greensville, City of Emporia	52 min
Aug 15, 5:52 PM EDT	Areal Flood Advisory	AKQ	Greensville, Sussex	3 hr
Aug 15, 6:16 PM EDT	Special Weather Statement	AKQ	Gloucester, James City, New Kent, City of Williamsburg	59 min
Aug 15, 6:34 PM EDT	Areal Flood Advisory	AKQ	Charles City, James City, King and Queen, King William, New Kent	3 hr
Aug 15, 6:50 PM EDT	Special Weather Statement	AKQ	Charles City, Henrico, City of Colonial Heights, City of Hopewell, City of Petersburg	55 min
Aug 15, 7:00 PM EDT	Areal Flood Advisory	AKQ	Chesterfield, Dinwiddie	3 hr
Aug 15, 7:20 PM EDT	Areal Flood Advisory	AKQ	Charles City, Chesterfield, Prince George, City of Colonial Heights, City of Hopewell	26 min
Aug 15, 7:54 PM EDT	Areal Flood Advisory	AKQ	Chesterfield	11 min

Nearby

Flash Flood Warnings in Virginia, 2021 Every flash 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.