Alert archive / Virginia / Flash Flood Warnings in 2021

Flash Flood Warning 49, NWS Wakefield, VA

August 16, 20214 counties in Virginia

NWS Wakefield, VA issued this flash flood warning at Aug 16, 2021, 2:37 PM EDT for 4 counties in Virginia. It was in force for 3 hr. 2 reports 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 16, 2021, 2:37 PM EDT (18:37 UTC)
Expired: Aug 16, 2021, 5:16 PM EDT
In force: 3 hr
Issued by: NWS Wakefield, VA
Area: Storm-based polygon
Flood severity: None

Counties City of Newport News, VA, Isle of Wight County, VA, Surry County, VA, York County, VA

The radar

The Norfolk radar (KAKQ), 41 km from the middle of the area, began a volume at 18:39 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 16, 3:08 PM EDT	FLASH FLOOD	Rushmere, VA	LANE CLOSURES DUE TO STANDING WATER ON ROUTE 10 NEAR RUSHMERE.
Aug 16, 3:45 PM EDT	FLASH FLOOD	1 N Lawson, VA	LANES CLOSED ON ROUTE 673 NEAR LAWSON.

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

The nearest sounding before it

Wallops Is Stn, VA (KWAL), launched 12:00Z, 6.6 hours before the alert went out and 140 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: 28 J/kg
Mixed-layer CIN: -110 J/kg
Mixed-layer LCL: 939 m above ground
0-6 km bulk shear: 11 kt
0-1 km storm-relative helicity: 4 m²/s²
0-3 km storm-relative helicity: 46 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

108 
WGUS51 KAKQ 161837
FFWAKQ
VAC093-181-199-700-162145-
/O.NEW.KAKQ.FF.W.0049.210816T1837Z-210816T2145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Wakefield VA
237 PM EDT Mon Aug 16 2021

The National Weather Service in Wakefield has issued a

* Flash Flood Warning for...
  Northeastern Isle of Wight County in southeastern Virginia...
  Surry County in southeastern Virginia...
  Southwestern York County in southeastern Virginia...
  The City of Newport News in southeastern Virginia...

* Until 545 PM EDT.

* At 237 PM EDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Between 1.5 and 2.5 inches of 
  rain have fallen. The expected rainfall rate is 1.5 to 2.5 inches 
  in 1 hour. 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...
  Newport News, Hampton, Christopher Newport University, Patrick 
  Henry Field, Fort Eustis, Denbigh, Beaconsdale, Tabb, Mogarts 
  Beach, Rushmere, Lawson, Menchville, Poolesville, Oriana, 
  Moonlight, Bacons Castle, Oyster Point, Newport News Golf Course, 
  Comet and Hilton Village.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3709 7681 3718 7655 3716 7642 3713 7641
      3710 7640 3709 7644 3709 7643 3708 7645
      3704 7645 3703 7646 3702 7650 3705 7655
      3706 7658 3708 7660 3710 7663 3707 7664
      3706 7664 3705 7658 3702 7656 3696 7682

FLASH FLOOD...RADAR INDICATED
EXPECTED RAINFALL...1.5-2.5 INCHES IN 1 HOUR

$$

EI

2 follow-up statements

070 
WGUS71 KAKQ 161918
FFSAKQ

Flash Flood Statement
National Weather Service Wakefield VA
318 PM EDT Mon Aug 16 2021

VAC093-181-199-700-162145-
/O.CON.KAKQ.FF.W.0049.000000T0000Z-210816T2145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Isle of Wight VA-Surry VA-York VA-City of Newport News VA-
318 PM EDT Mon Aug 16 2021

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 545 PM EDT THIS 
AFTERNOON FOR NORTHEASTERN ISLE OF WIGHT, SURRY AND SOUTHWESTERN 
YORK COUNTIES AND THE CITY OF NEWPORT NEWS...

At 318 PM EDT, the Department of Highways reported lane closures on 
Route 10 near Rushmere. Between 2 and 3 inches of rain have fallen. 
Flash flooding is already occurring.

HAZARD...Flash flooding caused by thunderstorms.

SOURCE...Department of Highways.

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...
  Newport News, Hampton, Christopher Newport University, Patrick 
  Henry Field, Fort Eustis, Denbigh, Beaconsdale, Tabb, Mogarts 
  Beach, Rushmere, Lawson, Menchville, Poolesville, Oriana, 
  Moonlight, Bacons Castle, Oyster Point, Newport News Golf Course, 
  Comet and Hilton Village.

Most of the heavy rain has ended, but the threat for flooding will 
continue for another hour or two.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3709 7681 3718 7655 3716 7642 3713 7641
      3710 7640 3709 7644 3709 7643 3708 7645
      3704 7645 3703 7646 3702 7650 3705 7655
      3706 7658 3708 7660 3710 7663 3707 7664
      3706 7664 3705 7658 3702 7656 3696 7682

FLASH FLOOD...OBSERVED

$$

EI

852 
WGUS71 KAKQ 162116
FFSAKQ

Flash Flood Statement
National Weather Service Wakefield VA
516 PM EDT Mon Aug 16 2021

VAC093-181-199-700-162126-
/O.CAN.KAKQ.FF.W.0049.000000T0000Z-210816T2145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Isle of Wight VA-Surry VA-York VA-City of Newport News VA-
516 PM EDT Mon Aug 16 2021

...FLASH FLOOD WARNING IS CANCELLED FOR NORTHEASTERN ISLE OF WIGHT, 
SURRY AND SOUTHWESTERN YORK COUNTIES AND THE CITY OF NEWPORT NEWS...

The heavy rain has ended. Flooding is no longer expected to pose a 
threat. Please continue to heed remaining road closures.

LAT...LON 3709 7681 3718 7655 3716 7642 3713 7641
      3710 7640 3709 7644 3709 7643 3708 7645
      3704 7645 3703 7646 3702 7650 3705 7655
      3706 7658 3708 7660 3710 7663 3707 7664
      3706 7664 3705 7658 3702 7656 3696 7682

$$

EI

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 15, 8:05 PM EDT	Flash Flood Warning	AKQ	Chesterfield, City of Richmond	3 hr
Aug 15, 8:21 PM EDT	Areal Flood Advisory	AKQ	Goochland, Hanover, Henrico, Powhatan	3 hr
Aug 15, 8:42 PM EDT	Flash Flood Warning	AKQ	Hanover, Henrico	3 hr
Aug 15, 10:17 PM EDT	Areal Flood Advisory	AKQ	Chesterfield, Hanover, Henrico, City of Richmond	118 min
Aug 16, 2:43 AM EDT	Areal Flood Advisory	AKQ	Chesterfield, Henrico, City of Richmond	3 hr
Aug 16, 3:29 AM EDT	Areal Flood Advisory	AKQ	Chesterfield, Prince George, City of Colonial Heights, City of Hopewell, City of Petersburg	6 hr
Aug 16, 3:33 AM EDT	Areal Flood Advisory	AKQ	Southampton	2 hr
Aug 16, 6:11 AM EDT	Areal Flood Advisory	AKQ	Amelia, Chesterfield	4 hr
Aug 16, 8:18 AM EDT	Flash Flood Watch	AKQ	Charles City, Chesterfield, Essex, Gloucester, Hanover, Henrico and 18 more	12 hr
Aug 16, 8:41 AM EDT	Areal Flood Advisory	AKQ	James City, City of Williamsburg	2 hr
Aug 16, 1:22 PM EDT	Areal Flood Advisory	AKQ	City of Richmond	5 hr
Aug 16, 1:47 PM EDT	Special Weather Statement	AKQ	City of Norfolk, City of Portsmouth	43 min
Aug 16, 2:00 PM EDT	Areal Flood Advisory	AKQ	Isle of Wight, Surry, York, City of Newport News	3 hr
Aug 16, 2:09 PM EDT	Areal Flood Advisory	AKQ	City of Chesapeake, City of Norfolk, City of Portsmouth	38 min
Aug 16, 2:46 PM EDT	Flash Flood Warning	AKQ	City of Chesapeake, City of Norfolk, City of Portsmouth	2 hr
Aug 16, 3:00 PM EDT	Areal Flood Advisory	AKQ	City of Chesapeake, City of Virginia Beach	3 hr
Aug 16, 3:13 PM EDT	Areal Flood Advisory	AKQ	Henrico	2 hr
Aug 16, 3:36 PM EDT	Flash Flood Warning	AKQ	Henrico	3 hr
Aug 16, 3:39 PM EDT	Special Weather Statement	AKQ	Caroline, Essex, Richmond, Westmoreland	51 min
Aug 16, 4:51 PM EDT	Areal Flood Advisory	AKQ	Chesterfield, Henrico, City of Richmond	114 min
Aug 16, 5:03 PM EDT	Flash Flood Warning	AKQ	Chesterfield, Henrico, City of Richmond	3 hr
Aug 16, 5:53 PM EDT	Areal Flood Advisory	AKQ	Chesterfield	112 min
Aug 16, 6:35 PM EDT	Special Weather Statement	AKQ	Greensville, City of Emporia	55 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.