Alert archive / West Virginia / Flash Flood Watches in 2012

Flash Flood Watch 13, NWS Charleston, WV

July 19, 201212 counties in West Virginia; Athens County, Ohio

NWS Charleston, WV issued this flash flood watch at Jul 19, 2012, 10:47 AM EDT for 12 counties in West Virginia; Athens County, Ohio. It took effect at Jul 19, 2012, 12:00 PM EDT. It was in force for 8 hr.

The area

The counties it named.

The facts

Issued
Jul 19, 2012, 10:47 AM EDT (14:47 UTC)
In effect from
Jul 19, 2012, 12:00 PM EDT
Expired
Jul 19, 2012, 8:16 PM EDT
In force
8 hr
Issued by
NWS Charleston, WV
Flood severity
None

Counties Athens County, OH, Barbour County, WV, Braxton County, WV, Calhoun County, WV, Doddridge County, WV, Gilmer County, WV, Harrison County, WV, Lewis County, WV, Ritchie County, WV, Roane County, WV, Upshur County, WV, Wirt County, WV, Wood County, WV

The radar

The Charleston,WV radar (KRLX), 107 km from the middle of the area, began a volume at 14:47 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

Pittsburgh, PA (KPIT), launched 12:00Z, 2.8 hours before the alert went out and 168 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, Pittsburgh, PA at 12:00Z on 2012-07-19Temperature 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, Pittsburgh, PA at 12:00Z on 2012-07-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 46 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
635 m above ground
0-6 km bulk shear
17 kt
0-1 km storm-relative helicity
46 m²/s²
0-3 km storm-relative helicity
72 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.

556 
WGUS61 KRLX 191447
FFARLX

URGENT - IMMEDIATE BROADCAST REQUESTED
FLOOD WATCH
NATIONAL WEATHER SERVICE CHARLESTON WV
1047 AM EDT THU JUL 19 2012

OHZ075-WVZ009-016>020-028>031-039-040-192300-
/O.NEW.KRLX.FF.A.0013.120719T1600Z-120721T0000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
ATHENS-WOOD-ROANE-WIRT-CALHOUN-RITCHIE-DODDRIDGE-BRAXTON-GILMER-
LEWIS-HARRISON-UPSHUR-BARBOUR-
INCLUDING THE CITIES OF...ATHENS...PARKERSBURG...VIENNA...
SPENCER...ELIZABETH...GRANTSVILLE...HARRISVILLE...PENNSBORO...
WEST UNION...SUTTON...GASSAWAY...BURNSVILLE...GLENVILLE...
WESTON...CLARKSBURG...BRIDGEPORT...BUCKHANNON...PHILIPPI...
BELINGTON
1047 AM EDT THU JUL 19 2012

...FLASH FLOOD WATCH IN EFFECT THROUGH FRIDAY EVENING...

THE NATIONAL WEATHER SERVICE IN CHARLESTON HAS ISSUED A

* FLASH FLOOD WATCH FOR PORTIONS OF SOUTHEAST OHIO AND WEST 
  VIRGINIA...INCLUDING THE FOLLOWING AREAS...IN SOUTHEAST OHIO...
   ATHENS. IN WEST VIRGINIA...BARBOUR...BRAXTON...CALHOUN... 
  DODDRIDGE...GILMER...HARRISON...LEWIS...RITCHIE...ROANE... 
  UPSHUR...WIRT AND WOOD. 

* THROUGH FRIDAY EVENING

* ANTECEDENT RAINFALL HAVE CAUSED SOILS TO BECOME NEARLY SATURATED SINCE
  YESTERDAY. LOCALIZED DOWNPOURS COULD OCCUR THIS AFTERNOON
  THROUGH EARLY FRIDAY. RAIN AMOUNT OF 2 INCHES OR MORE COULD BE
  POSSIBLE THROUGH FRIDAY MORNING.

* SMALL STREAMS AND CREEKS AFFECTED BY THESE LOCALIZED DOWNPOURS
  WOULD RISE RAPIDLY. STREET...LOW LYING...AND POOR DRAINAGE AREA FLOODING
  CAN MORE EASILY OCCUR.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FLASH FLOOD WATCH MEANS THAT CONDITIONS MAY DEVELOP THAT LEAD
TO FLASH FLOODING. FLASH FLOODING IS A VERY DANGEROUS SITUATION.

THOSE LIVING ALONG FLOOD PRONE CREEKS...AND COUNTY OFFICIALS...
SHOULD INCREASE YOUR WEATHER AWARENESS. MONITOR WATER LEVELS
FREQUENTLY IF HEAVIER SHOWERS DO DEVELOP. BE PREPARED TO TAKE
QUICK ACTION SHOULD FLOODING OCCUR...OR A FLASH FLOOD WARNINGS IS
POSTED.

&&

$$
1 follow-up statement
259 
WGUS61 KRLX 200016
FFARLX

FLOOD WATCH
NATIONAL WEATHER SERVICE CHARLESTON WV
816 PM EDT THU JUL 19 2012

OHZ075-WVZ009-016>020-028>031-039-040-200130-
/O.CAN.KRLX.FF.A.0013.000000T0000Z-120721T0000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
ATHENS-WOOD-ROANE-WIRT-CALHOUN-RITCHIE-DODDRIDGE-BRAXTON-GILMER-
LEWIS-HARRISON-UPSHUR-BARBOUR-
INCLUDING THE CITIES OF...ATHENS...PARKERSBURG...VIENNA...
SPENCER...ELIZABETH...GRANTSVILLE...HARRISVILLE...PENNSBORO...
WEST UNION...SUTTON...GASSAWAY...BURNSVILLE...GLENVILLE...
WESTON...CLARKSBURG...BRIDGEPORT...BUCKHANNON...PHILIPPI...
BELINGTON
816 PM EDT THU JUL 19 2012

...FLASH FLOOD WATCH IS CANCELLED...

THE FLASH FLOOD WATCH FOR PORTIONS OF SOUTHEAST OHIO AND WEST
VIRGINIA HAS BEEN CANCELLED. RAINFALL AMOUNTS HAVE NOT BEEN
REALIZED.  

$$

The office that day

Everything else NWS Charleston, WV issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 18, 9:48 PM EDTAreal Flood WarningRLXCabell87 min
Jul 18, 10:51 PM EDTSpecial Weather StatementRLXLogan84 min
Jul 19, 2:52 PM EDTSpecial Weather StatementRLXCabell38 min
Jul 19, 2:57 PM EDTSevere Thunderstorm WarningRLXCabell, Lincoln, Putnam33 min
Jul 19, 3:32 PM EDTSpecial Weather StatementRLXBoone, Calhoun, Doddridge, Gilmer, Kanawha, Lincoln and 7 more58 min
Jul 19, 3:54 PM EDTSevere Thunderstorm WarningRLXBoone, Kanawha, Lincoln51 min
Jul 19, 4:21 PM EDTSpecial Weather StatementRLXBarbour, Braxton, Clay, Fayette, Harrison, Lewis and 8 more54 min
Jul 19, 5:14 PM EDTSpecial Weather StatementRLXBarbour, Fayette, Nicholas, Pocahontas, Raleigh, Randolph and 2 more46 min
Jul 18, 8:07 PM EDTSpecial Weather StatementRLXGallia38 min
Jul 19, 2:18 PM EDTSpecial Weather StatementRLXLawrence27 min
Jul 19, 2:45 PM EDTSpecial Weather StatementRLXMorgan, Washington45 min

Nearby

Flash Flood Watches in West Virginia, 2012Flash Flood Watches in Ohio, 2012Every flash flood watch 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.