Alert archive / Virginia / Flash Flood Warnings in 2017

Flash Flood Warning 2, NWS Wakefield, VA

June 16, 2017Hanover County, Henrico County, Virginia

NWS Wakefield, VA issued this flash flood warning at Jun 16, 2017, 9:47 PM EDT for Hanover County, Henrico 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: Jun 16, 2017, 9:47 PM EDT (01:47 UTC)
Expired: Jun 17, 2017, 12:45 AM EDT
In force: 3 hr
Issued by: NWS Wakefield, VA
Area: Storm-based polygon
Flood severity: None

Counties Hanover County, VA, Henrico County, VA

The radar

The Norfolk radar (KAKQ), 81 km from the middle of the area, began a volume at 01:49 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
Jun 16, 10:06 PM EDT	FLASH FLOOD	1 Ssw Lakeside, VA	WIDESPREAD FLOODING IN HENRICO AROUND LAKESIDE AND SURROUNDING AREA. PORTIONS OF INTERSTATE 95 FLOODED AT WILMER RD, STAPLES MILL RD FLOODED. WATER UP TO 3 FT DEEP AT MARTIN ST AND EDGEMORE ST.

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 00:00Z, 1.8 hours before the alert went out and 149 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: 593 J/kg
Mixed-layer CIN: -12 J/kg
Mixed-layer LCL: 821 m above ground
0-6 km bulk shear: 6 kt
0-1 km storm-relative helicity: 5 m²/s²
0-3 km storm-relative helicity: 28 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

716 
WGUS51 KAKQ 170147
FFWAKQ
VAC085-087-170445-
/O.NEW.KAKQ.FF.W.0002.170617T0147Z-170617T0445Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Wakefield VA
947 PM EDT FRI JUN 16 2017

The National Weather Service in Wakefield has issued a

* Flash Flood Warning for...
  Northwestern Henrico County in central Virginia...
  South central Hanover County in central Virginia...

* Until 1245 AM EDT

* At 946 PM EDT, Doppler radar indicated heavy rain across the warned
  area. Up to three inches of rain have already fallen. Flash 
  flooding is already occurring, with reports of street flooding and 
  some roads shut down.

* Some locations that will experience flooding include...
  Ashland, Mechanicsville, Tuckahoe, Laurel, Lakeside, Glen Allen,
  East Highland Park, Hanover Airport, Elmont, Longdale, Solomons
  Store, Chamberlayne, Atlee, Ashcake, Greendale and Dumbarton.

Additional rainfall amounts up to one inch are possible in the 
warned area.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Be especially cautious at night when it is harder to recognize the
dangers of flooding.

&&

LAT...LON 3762 7731 3759 7744 3760 7744 3760 7748
      3758 7747 3758 7750 3759 7753 3758 7755
      3757 7753 3756 7756 3771 7757 3777 7734

$$

SCALORA

2 follow-up statements

757 
WGUS71 KAKQ 170256
FFSAKQ

Flash Flood Statement
National Weather Service Wakefield VA
1056 PM EDT FRI JUN 16 2017

VAC085-087-170445-
/O.CON.KAKQ.FF.W.0002.000000T0000Z-170617T0445Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Henrico VA-Hanover VA-
1056 PM EDT FRI JUN 16 2017

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1245 AM EDT FOR
NORTHWESTERN HENRICO AND SOUTH CENTRAL HANOVER COUNTIES...

At 1053 PM EDT, Although heavy rain has ended across the warned 
area, up to three to four inches of rain have already fallen and 
water is still covering some roadways.

Some locations that will experience flooding include...
Ashland, Mechanicsville, Tuckahoe, Laurel, Lakeside, Glen Allen, East
Highland Park, Hanover Airport, Elmont, Longdale, Solomons Store,
Chamberlayne, Atlee, Ashcake, Greendale and Dumbarton.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Be especially cautious at night when it is harder to recognize the
dangers of flooding.

&&

LAT...LON 3762 7731 3759 7744 3760 7744 3760 7748
      3758 7747 3758 7750 3759 7753 3758 7755
      3757 7753 3756 7756 3771 7757 3777 7734

$$

SCALORA

642 
WGUS71 KAKQ 170432
FFSAKQ

Flash Flood Statement
National Weather Service Wakefield VA
1232 AM EDT SAT JUN 17 2017

VAC085-087-170440-
/O.CAN.KAKQ.FF.W.0002.000000T0000Z-170617T0445Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Henrico VA-Hanover VA-
1232 AM EDT SAT JUN 17 2017

...THE FLASH FLOOD WARNING FOR NORTHWESTERN HENRICO AND SOUTH CENTRAL
HANOVER COUNTIES IS CANCELLED...

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

LAT...LON 3762 7731 3759 7744 3760 7744 3760 7748
      3758 7747 3758 7750 3759 7753 3758 7755
      3757 7753 3756 7756 3771 7757 3777 7734

$$

44

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 16, 8:17 PM EDT	Special Weather Statement	AKQ	City of Richmond	43 min
Jun 16, 9:05 PM EDT	Areal Flood Advisory	AKQ	Hanover, Henrico, King William, City of Richmond	115 min
Jun 16, 9:27 PM EDT	Special Weather Statement	AKQ	Mecklenburg	48 min
Jun 16, 10:35 PM EDT	Special Weather Statement	AKQ	York, City of Hampton, City of Newport News, City of Poquoson	40 min
Jun 16, 11:03 PM EDT	Special Weather Statement	AKQ	City of Norfolk, City of Portsmouth	27 min
Jun 17, 12:00 AM EDT	Special Weather Statement	AKQ	City of Suffolk	30 min
Jun 17, 4:09 AM EDT	Small Craft Advisory	AKQ		3 days
Jun 17, 12:11 PM EDT	Special Weather Statement	AKQ	Northampton	64 min
Jun 17, 1:32 PM EDT	Special Weather Statement	AKQ	City of Norfolk, City of Virginia Beach	43 min
Jun 17, 1:39 PM EDT	Special Weather Statement	AKQ	Accomack	66 min
Jun 17, 1:41 PM EDT	Special Weather Statement	AKQ	Gloucester, Lancaster, Mathews, Middlesex	64 min
Jun 17, 2:44 PM EDT	Special Weather Statement	AKQ	Lancaster, Northumberland	61 min
Jun 17, 2:45 PM EDT	Special Weather Statement	AKQ	Isle of Wight, City of Franklin	45 min
Jun 17, 3:53 PM EDT	Special Weather Statement	AKQ	Mecklenburg	37 min
Jun 17, 4:16 PM EDT	Special Weather Statement	AKQ	Chesterfield, Henrico, City of Colonial Heights, City of Hopewell, City of Petersburg, City of Richmond	44 min
Jun 17, 4:29 PM EDT	Beach Hazards Statement	AKQ	Accomack, Northampton, City of Virginia Beach	49 hr
Jun 17, 4:45 PM EDT	Areal Flood Advisory	AKQ	Charles City, New Kent	3 hr
Jun 17, 5:07 PM EDT	Special Weather Statement	AKQ	King William	38 min
Jun 17, 5:13 PM EDT	Special Weather Statement	AKQ	Southampton	47 min
Jun 17, 6:16 PM EDT	Special Weather Statement	AKQ	Southampton, City of Franklin	59 min

Nearby

Flash Flood Warnings in Virginia, 2017 Every flash flood warning in 2017

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.