Alert archive / Virginia / Flash Flood Warnings in 2012

Flash Flood Warning 8, NWS Wakefield, VA

August 28, 2012City of Hampton, City of Newport News, Virginia

NWS Wakefield, VA issued this flash flood warning at Aug 28, 2012, 6:04 PM EDT for City of Hampton, City of Newport News, Virginia. It was in force for 56 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Aug 28, 2012, 6:04 PM EDT (22:04 UTC)
Expired: Aug 28, 2012, 7:00 PM EDT
In force: 56 min
Issued by: NWS Wakefield, VA
Area: Storm-based polygon
Flood severity: None

Counties City of Hampton, VA, City of Newport News, VA

The radar

The Norfolk radar (KAKQ), 57 km from the middle of the area, began a volume at 22:07 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

Wallops Is Stn, VA (KWAL), launched 12:00Z, 10.1 hours before the alert went out and 133 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: 682 J/kg
Mixed-layer CIN: -52 J/kg
Mixed-layer LCL: 968 m above ground
0-6 km bulk shear: 23 kt
0-1 km storm-relative helicity: 70 m²/s²
0-3 km storm-relative helicity: 123 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.1

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

353 
WGUS51 KAKQ 282204
FFWAKQ
VAC650-700-282300-
/O.NEW.KAKQ.FF.W.0008.120828T2204Z-120828T2300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE WAKEFIELD VA
604 PM EDT TUE AUG 28 2012

THE NATIONAL WEATHER SERVICE IN WAKEFIELD HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  SOUTHERN CITY OF HAMPTON COUNTY...
  SOUTHEASTERN CITY OF NEWPORT NEWS COUNTY...

* UNTIL 700 PM EDT...

* AT 558 PM EDT...THE PUBLIC REPORTED FLASH FLOODING NEAR MERCURY 
BLVD FROM NEARLY STATIONARY THUNDERSTORMS ALONG A LINE EXTENDING 
FROM HAMPTON TO 6 MILES WEST OF NORTHAMPTON...OR ALONG A LINE 
EXTENDING FROM HAMPTON TO NEWPORT NEWS...DRIFTING SOUTH AT 5 MPH.

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO HAMPTON.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING.
IF YOU ARE IN THE WARNING AREA MOVE TO HIGHER GROUND IMMEDIATELY.
RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE
PRECAUTIONS TO PROTECT LIFE AND PROPERTY. NEVER ATTEMPT TO CROSS
SWIFTLY FLOWING WATERS OR WATERS OF UNKNOWN DEPTH BY FOOT OR IN AN
AUTOMOBILE. TURN AROUND DON'T DROWN!

&&

LAT...LON 3707 7628 3700 7632 3700 7633 3699 7637
      3697 7636 3696 7636 3694 7642 3704 7654

$$

44

1 follow-up statement

278 
WGUS71 KAKQ 282257
FFSAKQ

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE WAKEFIELD VA
657 PM EDT TUE AUG 28 2012

VAC650-700-282306-
/O.EXP.KAKQ.FF.W.0008.000000T0000Z-120828T2300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CITY OF HAMPTON VA-CITY OF NEWPORT NEWS VA-
657 PM EDT TUE AUG 28 2012

...THE FLASH FLOOD WARNING WILL EXPIRE AT 700 PM EDT FOR SOUTHEASTERN
CITY OF NEWPORT NEWS AND SOUTHERN CITY OF HAMPTON COUNTIES...

THE HEAVY RAINFALL IS MOVING SOUTHEAST AND OUT OF THE WARNED 
AREA.    

LAT...LON 3707 7628 3700 7632 3700 7633 3699 7637
      3697 7636 3696 7636 3694 7642 3704 7654
TIME...MOT...LOC 2256Z 180DEG 0KT 3705 7630 3704 7653

$$

44

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 28, 3:49 PM EDT	Special Weather Statement	AKQ	City of Hampton, City of Newport News, City of Poquoson	26 min
Aug 28, 4:16 PM EDT	Special Weather Statement	AKQ	City of Hampton, City of Newport News, City of Poquoson	29 min
Aug 28, 4:52 PM EDT	Special Weather Statement	AKQ	Isle of Wight, City of Hampton, City of Norfolk	23 min
Aug 28, 5:14 PM EDT	Special Weather Statement	AKQ	City of Norfolk, City of Portsmouth	31 min
Aug 28, 5:16 PM EDT	Special Weather Statement	AKQ	Sussex	29 min
Aug 28, 5:26 PM EDT	Areal Flood Advisory	AKQ	City of Hampton, City of Newport News	64 min
Aug 28, 5:47 PM EDT	Special Weather Statement	AKQ	Isle of Wight, City of Hampton, City of Newport News, City of Norfolk, City of Portsmouth	28 min
Aug 28, 5:56 PM EDT	Special Weather Statement	AKQ	Southampton	34 min
Aug 28, 6:17 PM EDT	Special Weather Statement	AKQ	Brunswick, Greensville, Mecklenburg, City of Emporia	28 min
Aug 28, 6:21 PM EDT	Special Weather Statement	AKQ	Isle of Wight, City of Hampton, City of Norfolk, City of Poquoson, City of Portsmouth	24 min
Aug 28, 6:47 PM EDT	Special Weather Statement	AKQ	Brunswick, Greensville, Isle of Wight, Mecklenburg, Southampton, City of Chesapeake and 6 more	43 min
Aug 28, 7:03 PM EDT	Areal Flood Advisory	AKQ	Isle of Wight, City of Chesapeake, City of Norfolk, City of Portsmouth, City of Suffolk, City of Virginia Beach	57 min
Aug 28, 7:30 PM EDT	Special Weather Statement	AKQ	Greensville, Southampton, City of Chesapeake, City of Emporia, City of Franklin, City of Norfolk and 3 more	45 min
Aug 28, 7:45 PM EDT	Areal Flood Advisory	AKQ	Mecklenburg	45 min

Nearby

Flash Flood Warnings in Virginia, 2012 Every flash flood warning in 2012

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.