Alert archive / Virginia / Flash Flood Warnings in 2015

Flash Flood Warning 21, NWS Baltimore/Washington

June 27, 20154 counties in Virginia

NWS Baltimore/Washington issued this flash flood warning at Jun 27, 2015, 4:06 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
Jun 27, 2015, 4:06 PM EDT (20:06 UTC)
Expired
Jun 27, 2015, 7:00 PM EDT
In force
3 hr
Issued by
NWS Baltimore/Washington
Area
Storm-based polygon
Flood severity
None

Counties City of Fredericksburg, VA, King George County, VA, Spotsylvania County, VA, Stafford County, VA

The radar

The Sterling radar (KLWX), 75 km from the middle of the area, began a volume at 20:06 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

TimeReportWhereRemark
Jun 27, 4:15 PM EDTFLASH FLOOD1 S Leeland, VAAMHERST AVENUE CLOSED DUE TO HIGH WATER
Jun 27, 4:15 PM EDTFLASH FLOOD1 Sw Brookfield, VAINTERSECTION OF NAOMI ROAD AND JETT DRIVE CLOSED DUE TO HIGH WATER

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, 8.1 hours before the alert went out and 71 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-pSkew-T log-p diagram, Washington/Dulle, VA at 12:00Z on 2015-06-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Washington/Dulle, VA at 12:00Z on 2015-06-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 153 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
603 m above ground
0-6 km bulk shear
31 kt
0-1 km storm-relative helicity
153 m²/s²
0-3 km storm-relative helicity
202 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

257 
WGUS51 KLWX 272006
FFWLWX
VAC099-177-179-630-272300-
/O.NEW.KLWX.FF.W.0021.150627T2006Z-150627T2300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
406 PM EDT SAT JUN 27 2015

THE NATIONAL WEATHER SERVICE IN STERLING VIRGINIA HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  EAST CENTRAL SPOTSYLVANIA COUNTY IN CENTRAL VIRGINIA...
  NORTHWESTERN KING GEORGE COUNTY IN CENTRAL VIRGINIA...
  SOUTHEASTERN STAFFORD COUNTY IN NORTHERN VIRGINIA...
  THE SOUTHEASTERN CITY OF FREDERICKSBURG IN CENTRAL VIRGINIA...

* UNTIL 700 PM EDT
    
* AT 406 PM EDT...DOPPLER RADAR INDICATED A THUNDERSTORM PRODUCING
  HEAVY RAIN ACROSS THE AREA. UP TO TWO INCHES OF RAIN HAVE ALREADY
  FALLEN. FLASH FLOODING IS EXPECTED TO BEGIN SHORTLY.

* SOME LOCATIONS THAT MAY EXPERIENCE FLOODING INCLUDE...
  STAFFORD...AQUIA CREEK...BROOKE...STONES CORNER...WHITE OAK...
  LEELAND...PASSAPATANZY...BROOKFIELD AND SEALSTON.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING.
IF YOU ARE IN THE WARNED AREA MOVE TO HIGHER GROUND IMMEDIATELY.
RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE
PRECAUTIONS TO PROTECT LIFE AND PROPERTY. DO NOT ATTEMPT TO CROSS
SWIFTLY FLOWING WATERS OR WATERS OF UNKNOWN DEPTH BY FOOT OR BY
AUTOMOBILE.

&&

LAT...LON 3827 7746 3844 7743 3841 7732 3834 7729
      3833 7727 3833 7723 3834 7721 3835 7717
      3836 7715 3835 7716 3824 7731 3825 7734
      3824 7736 3816 7746

$$

LEE
2 follow-up statements
103 
WGUS71 KLWX 272156
FFSLWX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
556 PM EDT SAT JUN 27 2015

VAC099-177-179-630-272300-
/O.CON.KLWX.FF.W.0021.000000T0000Z-150627T2300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
SPOTSYLVANIA VA-KING GEORGE VA-STAFFORD VA-CITY OF FREDERICKSBURG VA-
556 PM EDT SAT JUN 27 2015

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 700 PM EDT FOR
EAST CENTRAL SPOTSYLVANIA...NORTHWESTERN KING GEORGE...SOUTHEASTERN
STAFFORD COUNTIES AND THE CITY OF FREDERICKSBURG...

AT 553 PM EDT...HEAVY RAIN HAS FALLEN ACROSS THE WARNED AREA. ONE TO 
THREE INCHES OF RAIN HAS ALREADY FALLEN AND FLASH FLOODING IS 
OCCURRING.

ONE FLOOD PRONE AREA IN THIS THREAT ZONE IS BENCHMARK ROAD AT 
TIDEWATER TRAIL. SEVERAL ROADS ARE CLOSED DUE TO FLOODING.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

KEEP CHILDREN AWAY FROM STORM DRAINS...CULVERTS...CREEKS AND STREAMS.
WATER LEVELS CAN RISE RAPIDLY AND SWEEP CHILDREN AWAY.

TURN AROUND...DONT DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD 
DEATHS OCCUR IN VEHICLES. NEVER GO AROUND A BARRICADE FOR A CLOSED 
ROAD.

&&

LAT...LON 3827 7746 3844 7743 3841 7732 3834 7729
      3833 7727 3833 7723 3834 7721 3835 7717
      3836 7715 3835 7716 3824 7731 3825 7734
      3824 7736 3816 7746

$$

CAS
780 
WGUS71 KLWX 272257
FFSLWX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
657 PM EDT SAT JUN 27 2015

VAC099-177-179-630-272307-
/O.EXP.KLWX.FF.W.0021.000000T0000Z-150627T2300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
SPOTSYLVANIA VA-KING GEORGE VA-STAFFORD VA-CITY OF FREDERICKSBURG VA-
657 PM EDT SAT JUN 27 2015

...THE FLASH FLOOD WARNING FOR EAST CENTRAL SPOTSYLVANIA...
NORTHWESTERN KING GEORGE...SOUTHEASTERN STAFFORD COUNTIES AND THE
CITY OF FREDERICKSBURG WILL EXPIRE AT 700 PM EDT...

FLOOD WATERS HAVE RECEDED...AND ARE NO LONGER EXPECTED TO POSE A
THREAT TO LIFE OR PROPERTY. PLEASE CONTINUE TO HEED ANY ROAD
CLOSURES.

LAT...LON 3827 7746 3844 7743 3841 7732 3834 7729
      3833 7727 3833 7723 3834 7721 3835 7717
      3836 7715 3835 7716 3824 7731 3825 7734
      3824 7736 3816 7746

$$

CAS

The office that day

Everything else NWS Baltimore/Washington issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 26, 10:42 PM EDTSevere Thunderstorm WarningLWXHighland48 min
Jun 27, 12:01 PM EDTCoastal Flood AdvisoryLWXArlington, City of Alexandria, City of Falls Church20 hr
Jun 27, 2:38 PM EDTFlash Flood WarningLWXArlington, Fairfax, Loudoun, Prince William, Stafford, City of Alexandria and 4 more3 hr
Jun 27, 2:49 PM EDTSpecial Marine WarningLWX116 min
Jun 27, 2:55 PM EDTSevere Thunderstorm WarningLWXSpotsylvania, Stafford, City of Fredericksburg50 min
Jun 27, 3:09 PM EDTSpecial Marine WarningLWX51 min
Jun 27, 3:14 PM EDTSevere Thunderstorm WarningLWXFairfax, Prince William31 min
Jun 27, 3:39 PM EDTTornado WarningLWXStafford13 min
Jun 27, 3:46 PM EDTSpecial Marine WarningLWX119 min
Jun 27, 3:56 PM EDTSpecial Marine WarningLWX64 min
Jun 27, 3:59 PM EDTTornado WarningLWXKing George31 min
Jun 27, 4:51 PM EDTSpecial Marine WarningLWX84 min
Jun 27, 5:16 PM EDTSpecial Marine WarningLWX89 min

Nearby

Flash Flood Warnings in Virginia, 2015Every flash flood warning in 2015

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.