Alert archive / Virginia / Flash Flood Warnings in 2007

Flash Flood Warning 2, NWS Blacksburg, VA

May 31, 2007Amherst County, Virginia

NWS Blacksburg, VA issued this flash flood warning at May 31, 2007, 7:22 PM EDT for Amherst County, Virginia. It was in force for 4 hr. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
May 31, 2007, 7:22 PM EDT (23:22 UTC)
Expired
May 31, 2007, 11:15 PM EDT
In force
4 hr
Issued by
NWS Blacksburg, VA
Area
Counties, with a storm outline in the text
Flood severity
None

County Amherst County, VA

The radar

The Roanoke radar (KFCX), 119 km from the middle of the area, began a volume at 23:23 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

Roanoke, VA (KRNK), launched 12:00Z, 11.4 hours before the alert went out and 59 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, Roanoke, VA at 12:00Z on 2007-05-31Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 484 joules per kilogram.LCLLFCEL10008507005003002001001 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, Roanoke, VA at 12:00Z on 2007-05-31The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -14 square meters per square second.1939Sfc1 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
484 J/kg
Mixed-layer CIN
-77 J/kg
Mixed-layer LCL
1046 m above ground
0-6 km bulk shear
8 kt
0-1 km storm-relative helicity
-14 m²/s²
0-3 km storm-relative helicity
22 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.

000 
WGUS51 KRNK 312325
FFWRNK
VAC009-010315-
/X.NEW.KRNK.FF.W.0002.070531T2322Z-070601T0315Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE BLACKSBURG VA
722 PM EDT THU MAY 31 2007

THE NATIONAL WEATHER SERVICE IN BLACKSBURG HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  AMHERST COUNTY IN CENTRAL VIRGINIA

* UNTIL 1115 PM EDT

* AT 719 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  VERY HEAVY RAIN FROM THUNDERSTORMS ALONG A LINE EXTENDING FROM ALTO
  TO NAOLA...OR ALONG A LINE EXTENDING FROM 8 MILES NORTH OF FORKS OF
  BUFFALO TO BIG ISLAND...MOVING EAST AT 5 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  PLEASANT VIEW...LOWESVILLE AND ELON

ANOTHER AREA OF HEAVY RAINS FROM THUNDERSTORMS WILL MOVE ACROSS THE 
WESTNER HALF OF AMHERST COUNTY THROUGH EARLY EVENING...BRINGING AN 
ADDITIONAL ONE TO TWO INCHES.

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...COUNTRY ROADS...AS WELL AS FARMLAND ALONG THE 
BANKS OF CREEKS AND STREAMS...ESPECIALLY IN THE WESTERN SECTIONS OF 
THE COUNTY. SOME SPECIFIC CREEKS AND STREAMS THAT WILL FLOOD 
INCLUDE...CEDAR CREEK...BUFFALO CREEK....AND LONG BRANCH.

MOST FLOOD DEATHS OCCUR IN AUTOMOBILES. NEVER DRIVE YOUR VEHICLE INTO
AREAS WHERE THE WATER COVERS THE ROADWAY. FLOOD WATERS ARE USUALLY
DEEPER THAN THEY APPEAR. JUST ONE FOOT OF FLOWING WATER IS POWERFUL
ENOUGH TO SWEEP VEHICLES OFF THE ROAD. WHEN ENCOUNTERING FLOODED
ROADS MAKE THE SMART CHOICE...TURN AROUND...DONT DROWN.

PLEASE RELAY REPORTS OF FLOODING TO THE NATIONAL WEATHER SERVICE BY
CALLING TOLL FREE...1...8 6 6...2 1 5...4 3 2 4.

LAT...LON 3778 7918 3780 7925 3775 7928 3758 7941
      3753 7932 3748 7919 3769 7904 3779 7915

$$

WP
2 follow-up statements
000 
WGUS71 KRNK 010106
FFSRNK

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE BLACKSBURG VA
855 PM EDT THU MAY 31 2007

VAC009-010315-
/X.CON.KRNK.FF.W.0002.000000T0000Z-070601T0315Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
AMHERST VA-
855 PM EDT THU MAY 31 2007

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1115 PM EDT FOR
AMHERST COUNTY...

AT 850 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO 
INDICATE A LINE OF THUNDERSTORMS PRODUCING VERY HEAVY RAIN. THE LINE 
OF STORMS EXTENDED FROM WESTERN AMHERST COUNTY INTO WESTERN BEDFORD 
COUNTY AND WERE MOVING TO THE NORTHEAST AT 5 MPH. 

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO ALTO 
AND LOWESVILLE.

ADDITIONAL RAINFALL AMOUNTS OF 1 TO 2 INCHES ARE EXPECTED IN THE 
WARNED AREA BY 11:00 PM. THIS ADDITIONAL RAINFALL WILL RESULT IN 
FLOODING OF STREAMS AND CREEKS ALONG PEDLAR RIVER AND PINEY RIVER. 

DAVIS MILL CREEK WILL FLOOD ROUTE 634 AND ROUTE 755. 

FLOODING IS ALSO EXPECTED IN PEDLAR MILLS AT ROUTE 635 AT THE 
INTERSECTION OF MINERS BRANCH ROAD...ALONG ROUTE 643 AND ON ROUTE 
640 NEAR THE TOWN OF PLEASANT VIEW. 

MOST FLOOD DEATHS OCCUR IN AUTOMOBILES. NEVER DRIVE YOUR VEHICLE INTO
AREAS WHERE THE WATER COVERS THE ROADWAY. FLOOD WATERS ARE USUALLY
DEEPER THAN THEY APPEAR. JUST ONE FOOT OF FLOWING WATER IS POWERFUL
ENOUGH TO SWEEP VEHICLES OFF THE ROAD. WHEN ENCOUNTERING FLOODED
ROADS MAKE THE SMART CHOICE...TURN AROUND...DONT DROWN.

LAT...LON 3778 7918 3780 7925 3775 7928 3758 7941
      3753 7932 3748 7919 3769 7904 3779 7915

$$

AMS
000 
WGUS71 KRNK 010212
FFSRNK

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE BLACKSBURG VA
1011 PM EDT THU MAY 31 2007

VAC009-010221-
/X.CAN.KRNK.FF.W.0002.000000T0000Z-070601T0315Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
AMHERST VA-
1011 PM EDT THU MAY 31 2007

...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR AMHERST COUNTY...

HEAVY RAIN HAS ENDED OVER THE WARNED AREA...THUS THE FLASH FLOOD 
WARNING HAS BEEN CANCELLED.

IF YOU LIVE IN WESTERN AMHERST COUNTY...AND EXPERIENCED FLOODING 
EARLIER THIS EVENING...PLEASE CALL THE NATIONAL WEATHER SERVICE TOLL 
FREE...1...8 6 6...2 1 5...4 3 2 4.

LAT...LON 3778 7918 3780 7925 3775 7928 3758 7941
      3753 7932 3748 7919 3769 7904 3779 7915

$$

WP

The office that day

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

IssuedProductOfficeCountiesLasted
May 31, 2:03 PM EDTSevere Thunderstorm WarningRNKCarroll69 min
May 31, 2:58 PM EDTSevere Thunderstorm WarningRNKMontgomery66 min
May 31, 3:10 PM EDTSevere Thunderstorm WarningRNKCraig65 min
May 31, 3:14 PM EDTSevere Thunderstorm WarningRNKBath76 min
May 31, 3:39 PM EDTSevere Thunderstorm WarningRNKRoanoke49 min
May 31, 3:52 PM EDTSevere Thunderstorm WarningRNKBotetourt68 min
May 31, 4:31 PM EDTSevere Thunderstorm WarningRNKRoanoke, City of Roanoke, City of Salem35 min
May 31, 4:33 PM EDTSevere Thunderstorm WarningRNKBath72 min
May 31, 5:34 PM EDTSevere Thunderstorm WarningRNKRockbridge, City of Lexington71 min
May 31, 6:05 PM EDTSevere Thunderstorm WarningRNKBedford70 min
May 31, 6:07 PM EDTSevere Thunderstorm WarningRNKFranklin53 min
May 31, 6:28 PM EDTSevere Thunderstorm WarningRNKPittsylvania62 min
May 31, 7:13 PM EDTSevere Thunderstorm WarningRNKBedford92 min
May 31, 7:56 PM EDTSevere Thunderstorm WarningRNKHenry, City of Martinsville64 min

Nearby

Flash Flood Warnings in Virginia, 2007Every flash flood warning in 2007

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.