Alert archive / Virginia / Flash Flood Warnings in 2021

Flash Flood Warning 56, NWS Wakefield, VA

August 22, 2021Mathews County, Virginia

NWS Wakefield, VA issued this flash flood warning at Aug 22, 2021, 3:25 PM EDT for Mathews County, 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 22, 2021, 3:25 PM EDT (19:25 UTC)
Expired: Aug 22, 2021, 6:30 PM EDT
In force: 3 hr
Issued by: NWS Wakefield, VA
Area: Storm-based polygon
Flood severity: None

County Mathews County, VA

The radar

The Norfolk radar (KAKQ), 74 km from the middle of the area, began a volume at 19:26 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 22, 3:59 PM EDT	FLASH FLOOD	1 Wnw Mathews, VA	FLOODING IN THE COURTHOUSE AREA OF LIBERTY SQUARE.

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, 7.4 hours before the alert went out and 103 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: 1445 J/kg
Mixed-layer CIN: -18 J/kg
Mixed-layer LCL: 876 m above ground
0-6 km bulk shear: 23 kt
0-1 km storm-relative helicity: -34 m²/s²
0-3 km storm-relative helicity: 8 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

382 
WGUS51 KAKQ 221925
FFWAKQ
VAC115-222230-
/O.NEW.KAKQ.FF.W.0056.210822T1925Z-210822T2230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Wakefield VA
325 PM EDT Sun Aug 22 2021

The National Weather Service in Wakefield has issued a

* Flash Flood Warning for...
  Mathews County in eastern Virginia...

* Until 630 PM EDT.

* At 325 PM EDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Between 2 and 3 inches of rain 
  have fallen. The expected rainfall rate is 1 to 2 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...
  Mathews, Mobjack, Gwynn, Ruff, Moon, Port Haywood, Hudgins, Diggs, 
  Laban, Redart, Cardinal, North, Peary, New Point and Fort Nonsense.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3746 7645 3748 7644 3751 7628 3750 7625
      3748 7623 3747 7623 3734 7624 3734 7635
      3736 7638 3736 7641 3737 7642 3737 7641
      3738 7639 3739 7640 3741 7641 3742 7645
      3743 7645 3744 7644 3745 7645 3745 7644

FLASH FLOOD...RADAR INDICATED
EXPECTED RAINFALL...1-2 INCHES IN 1 HOUR

$$

EI

1 follow-up statement

442 
WGUS71 KAKQ 222223
FFSAKQ

Flash Flood Statement
National Weather Service Wakefield VA
623 PM EDT Sun Aug 22 2021

VAC115-222233-
/O.EXP.KAKQ.FF.W.0056.000000T0000Z-210822T2230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Mathews VA-
623 PM EDT Sun Aug 22 2021

...FLASH FLOOD WARNING WILL EXPIRE AT 630 PM EDT THIS EVENING FOR 
MATHEWS COUNTY...

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

LAT...LON 3746 7645 3748 7644 3751 7628 3750 7625
      3748 7623 3747 7623 3734 7624 3734 7635
      3736 7638 3736 7641 3737 7642 3737 7641
      3738 7639 3739 7640 3741 7641 3742 7645
      3743 7645 3744 7644 3745 7645 3745 7644

$$

Zimmerman

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 22, 1:27 PM EDT	Special Marine Warning	AKQ		63 min
Aug 22, 1:34 PM EDT	Special Marine Warning	AKQ		56 min
Aug 22, 1:46 PM EDT	Special Weather Statement	AKQ	Mathews	44 min
Aug 22, 2:10 PM EDT	Special Weather Statement	AKQ	Charles City, New Kent	35 min
Aug 22, 2:13 PM EDT	Special Weather Statement	AKQ	City of Virginia Beach	47 min
Aug 22, 2:22 PM EDT	Severe Thunderstorm Warning	AKQ	James City, Surry, City of Newport News, City of Williamsburg	38 min
Aug 22, 2:23 PM EDT	Special Marine Warning	AKQ		52 min
Aug 22, 2:29 PM EDT	Special Weather Statement	AKQ	Gloucester, Mathews	46 min
Aug 22, 2:35 PM EDT	Special Weather Statement	AKQ	Middlesex	40 min
Aug 22, 2:38 PM EDT	Special Marine Warning	AKQ		67 min
Aug 22, 2:41 PM EDT	Severe Thunderstorm Warning	AKQ	Lunenburg, Nottoway	49 min
Aug 22, 2:47 PM EDT	Severe Thunderstorm Warning	AKQ	Gloucester, Mathews, York	43 min
Aug 22, 2:50 PM EDT	Special Weather Statement	AKQ	Lancaster, Northumberland	40 min
Aug 22, 2:53 PM EDT	Severe Thunderstorm Warning	AKQ	Lancaster, Northumberland, Richmond	52 min
Aug 22, 3:02 PM EDT	Special Weather Statement	AKQ	James City	28 min
Aug 22, 3:06 PM EDT	Special Marine Warning	AKQ		54 min
Aug 22, 3:09 PM EDT	Areal Flood Advisory	AKQ	Gloucester, Mathews	3 hr
Aug 22, 3:14 PM EDT	Flash Flood Warning	AKQ	Lancaster, Northumberland, Richmond	3 hr
Aug 22, 3:14 PM EDT	Special Weather Statement	AKQ	City of Williamsburg	31 min
Aug 22, 3:16 PM EDT	Special Weather Statement	AKQ	Middlesex	29 min
Aug 22, 3:29 PM EDT	Special Weather Statement	AKQ	Mecklenburg	46 min
Aug 22, 3:31 PM EDT	Special Weather Statement	AKQ	Accomack	29 min
Aug 22, 3:36 PM EDT	Special Marine Warning	AKQ		54 min
Aug 22, 3:38 PM EDT	Special Weather Statement	AKQ	City of Norfolk, City of Portsmouth	37 min
Aug 22, 3:41 PM EDT	Special Weather Statement	AKQ	Dinwiddie	34 min
Aug 22, 3:49 PM EDT	Areal Flood Advisory	AKQ	Essex, King and Queen, Middlesex	3 hr
Aug 22, 3:51 PM EDT	Special Weather Statement	AKQ	King and Queen	39 min
Aug 22, 3:54 PM EDT	Special Marine Warning	AKQ		66 min
Aug 22, 4:01 PM EDT	Areal Flood Advisory	AKQ	City of Chesapeake, City of Norfolk, City of Portsmouth, City of Virginia Beach	3 hr
Aug 22, 4:04 PM EDT	Special Weather Statement	AKQ	Dinwiddie	26 min
Aug 22, 4:07 PM EDT	Flash Flood Warning	AKQ	Essex, Gloucester, King and Queen, Middlesex	3 hr
Aug 22, 4:11 PM EDT	Special Weather Statement	AKQ	Accomack	34 min
Aug 22, 4:13 PM EDT	Severe Thunderstorm Warning	AKQ	City of Chesapeake, City of Virginia Beach	47 min
Aug 22, 4:14 PM EDT	Special Weather Statement	AKQ	Surry	46 min
Aug 22, 4:14 PM EDT	Special Weather Statement	AKQ	Prince George	31 min
Aug 22, 4:19 PM EDT	Special Marine Warning	AKQ		32 min
Aug 22, 4:21 PM EDT	Areal Flood Advisory	AKQ	Accomack	2 hr
Aug 22, 4:31 PM EDT	Severe Thunderstorm Warning	AKQ	Chesterfield, Dinwiddie, Prince George, City of Colonial Heights, City of Hopewell, City of Petersburg	44 min
Aug 22, 4:35 PM EDT	Special Marine Warning	AKQ		55 min
Aug 22, 4:39 PM EDT	Flash Flood Warning	AKQ	City of Chesapeake, City of Norfolk, City of Portsmouth, City of Virginia Beach	3 hr
Aug 22, 4:47 PM EDT	Special Weather Statement	AKQ	Essex	28 min
Aug 22, 5:04 PM EDT	Special Weather Statement	AKQ	City of Chesapeake	41 min
Aug 22, 5:05 PM EDT	Special Weather Statement	AKQ	Sussex	40 min
Aug 22, 5:06 PM EDT	Special Marine Warning	AKQ		39 min
Aug 22, 5:09 PM EDT	Areal Flood Advisory	AKQ	Dinwiddie, Prince George, Surry, Sussex, City of Colonial Heights, City of Hopewell and 1 more	3 hr
Aug 22, 5:12 PM EDT	Severe Thunderstorm Warning	AKQ	Southampton, Sussex	48 min
Aug 22, 5:20 PM EDT	Special Weather Statement	AKQ	City of Suffolk	40 min
Aug 22, 5:46 PM EDT	Special Weather Statement	AKQ	Isle of Wight	29 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.