Alert archive / West Virginia / Flash Flood Warnings in 2018

Flash Flood Warning 69, NWS Charleston, WV

September 5, 20184 counties in West Virginia

NWS Charleston, WV issued this flash flood warning at Sep 5, 2018, 5:34 PM EDT for 4 counties in West Virginia. It was in force for 37 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
Sep 5, 2018, 5:34 PM EDT (21:34 UTC)
Expired
Sep 5, 2018, 6:11 PM EDT
In force
37 min
Issued by
NWS Charleston, WV
Area
Storm-based polygon
Flood severity
None

Counties Lincoln County, WV, Logan County, WV, Mingo County, WV, Wayne County, WV

The radar

The Charleston,WV radar (KRLX), 53 km from the middle of the area, began a volume at 21:39 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

Cncnati-Daytn, OH (KILN), launched 12:00Z, 9.6 hours before the alert went out and 213 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, Cncnati-Daytn, OH at 12:00Z on 2018-09-05Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 788 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, Cncnati-Daytn, OH at 12:00Z on 2018-09-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 48 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
788 J/kg
Mixed-layer CIN
-67 J/kg
Mixed-layer LCL
1442 m above ground
0-6 km bulk shear
22 kt
0-1 km storm-relative helicity
48 m²/s²
0-3 km storm-relative helicity
56 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

395 
WGUS51 KRLX 052134
FFWRLX
WVC043-045-059-099-052230-
/O.NEW.KRLX.FF.W.0069.180905T2134Z-180905T2230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Charleston WV
Issued by National Weather Service Pittsburgh PA
534 PM EDT WED SEP 5 2018

The National Weather Service in Charleston West Virginia has issued a

* Flash Flood Warning for...
  North central Mingo County in southern West Virginia...
  Southwestern Lincoln County in central West Virginia...
  East central Wayne County in western West Virginia...
  Northwestern Logan County in southern West Virginia...

* Until 630 PM EDT.

* At 531 PM EDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Near two inches of rain have 
  already fallen. Flash flooding is expected to begin shortly.

* Some locations that will experience flooding include...
  Harts.

Please report Severe Weather to the National Weather Service by
calling toll free, 800 401 9535, when you can do so safely.

You may also report severe weather by posting your report to the
Charleston West Virginia National Weather Service Facebook Page, or
by using the Twitter Hashtag, NWSRLX.

LAT...LON 3794 8206 3789 8216 3800 8233 3811 8227
      3809 8215

$$
ROCHE
1 follow-up statement
419 
WGUS71 KRLX 052211
FFSRLX

Flash Flood Statement
National Weather Service Charleston WV
Issued by National Weather Service Pittsburgh PA
611 PM EDT WED SEP 5 2018

WVC043-045-059-099-052221-
/O.CAN.KRLX.FF.W.0069.000000T0000Z-180905T2230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Mingo WV-Lincoln WV-Wayne WV-Logan WV-
611 PM EDT WED SEP 5 2018

...THE FLASH FLOOD WARNING FOR NORTH CENTRAL MINGO...SOUTHWESTERN
LINCOLN...EAST CENTRAL WAYNE AND NORTHWESTERN LOGAN COUNTIES IS
CANCELLED...

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

LAT...LON 3794 8206 3789 8216 3800 8233 3811 8227
      3809 8215

$$

ROCHE

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 5, 5:02 PM EDTSpecial Weather StatementRLXLincoln43 min
Sep 5, 5:35 PM EDTFlash Flood WarningRLXLincoln, Logan, Wayne35 min
Sep 5, 6:01 PM EDTSpecial Weather StatementRLXLincoln59 min

Nearby

Flash Flood Warnings in West Virginia, 2018Every flash flood warning in 2018

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.