Alert archive / West Virginia / Flash Flood Warnings in 2017

Flash Flood Warning 56, NWS Charleston, WV

November 6, 20175 counties in West Virginia; Washington County, Ohio

NWS Charleston, WV issued this flash flood warning at Nov 6, 2017, 4:42 AM EST for 5 counties in West Virginia; Washington County, Ohio. 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: Nov 6, 2017, 4:42 AM EST (09:42 UTC)
Expired: Nov 6, 2017, 7:45 AM EST
In force: 3 hr
Issued by: NWS Charleston, WV
Area: Storm-based polygon
Flood severity: None

Counties Washington County, OH, Pleasants County, WV, Ritchie County, WV, Tyler County, WV, Wirt County, WV, Wood County, WV

The radar

The Charleston,WV radar (KRLX), 128 km from the middle of the area, began a volume at 09:41 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

Time	Report	Where	Remark
Nov 6, 5:12 AM EST	FLASH FLOOD	Harrisville, WV	FLOODING STARTING ON STREETS IN PENNSBORO
Nov 6, 5:12 AM EST	HEAVY RAIN 2.5	Harrisville, WV

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Pittsburgh, PA (KAGC), launched 00:00Z, 9.7 hours before the alert went out and 146 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: 166 J/kg
Mixed-layer CIN: -85 J/kg
Mixed-layer LCL: 1258 m above ground
0-6 km bulk shear: 52 kt
0-1 km storm-relative helicity: 324 m²/s²
0-3 km storm-relative helicity: 409 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 1.0

Open this sounding in Storm Lab

The text

As transmitted.

595 
WGUS51 KRLX 060942
FFWRLX
OHC167-WVC073-085-095-105-107-061245-
/O.NEW.KRLX.FF.W.0056.171106T0942Z-171106T1245Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Charleston WV
442 AM EST MON NOV 6 2017

The National Weather Service in Charleston West Virginia has issued a

* Flash Flood Warning for...
  East central Washington County in southeastern Ohio...
  Pleasants County in northwestern West Virginia...
  Central Ritchie County in northwestern West Virginia...
  North central Wirt County in northwestern West Virginia...
  Western Tyler County in northern West Virginia...
  Northeastern Wood County in northwestern West Virginia...

* Until 745 AM EST

* At 441 AM EST, gauge reports indicated heavy rain falling across 
  the warned area. 1.5 to 2 inches of rain have already fallen.
  Flash flooding is expected to begin shortly.

* Some locations that will experience flooding include...
  Harrisville, St. Marys, Middlebourne, Sistersville, Pennsboro,
  Belmont, North Bend State Park, Matamoras, Ellenboro, Cairo,
  Pullman, Friendly, Maxwell, Schultz, New Matamoras, Mountain,
  Hebron, Pike, Highland and Willow Island.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.

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 3913 8098 3914 8143 3924 8145 3934 8137
      3944 8115 3955 8105 3954 8104 3955 8102
      3955 8079

$$

25

1 follow-up statement

804 
WGUS71 KRLX 061120
FFSRLX

Flash Flood Statement
National Weather Service Charleston WV
620 AM EST MON NOV 6 2017

OHC167-WVC073-085-095-105-107-061245-
/O.CON.KRLX.FF.W.0056.000000T0000Z-171106T1245Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Washington OH-Pleasants WV-Ritchie WV-Wirt WV-Tyler WV-Wood WV-
620 AM EST MON NOV 6 2017

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 745 AM EST FOR
EAST CENTRAL WASHINGTON...PLEASANTS...CENTRAL RITCHIE...NORTH CENTRAL
WIRT...WESTERN TYLER AND NORTHEASTERN WOOD COUNTIES...

At 619 AM EST, radar and gauge reports indicated that 1.5 to 2 
inches of rain have already fallen. This will cause flash flooding 
on streams and creeks. 

Some locations that will experience flooding include...
Harrisville, St. Marys, Middlebourne, Sistersville, Pennsboro,
Belmont, North Bend State Park, Matamoras, Ellenboro, Cairo, Pullman,
Friendly, Maxwell, Schultz, New Matamoras, Mountain, Hebron, Pike,
Highland and Willow Island.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.

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 3913 8098 3914 8143 3924 8145 3934 8137
      3944 8115 3955 8105 3954 8104 3955 8102
      3955 8079

$$

25

The office that day

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

Issued	Product	Office	Counties	Lasted
Nov 5, 10:49 PM EST	Special Weather Statement	RLX	Calhoun, Doddridge, Gilmer, Harrison, Ritchie, Taylor	41 min
Nov 6, 3:45 AM EST	Flash Flood Warning	RLX	Wood	6 hr
Nov 6, 4:09 AM EST	Flash Flood Warning	RLX	Wood	6 hr
Nov 6, 5:54 AM EST	Special Weather Statement	RLX	Doddridge, Harrison	81 min
Nov 6, 7:39 AM EST	Areal Flood Warning	RLX	Pleasants, Ritchie, Tyler, Wirt, Wood	6 hr
Nov 6, 9:31 AM EST	Areal Flood Warning	RLX	Wood	15 hr
Nov 6, 9:42 AM EST	Areal Flood Warning	RLX	Wood	3 hr
Nov 5, 7:20 PM EST	Severe Thunderstorm Warning	RLX	Perry	55 min
Nov 5, 8:15 PM EST	Special Weather Statement	RLX	Morgan	30 min
Nov 5, 8:34 PM EST	Severe Thunderstorm Warning	RLX	Morgan	26 min
Nov 6, 2:49 AM EST	Flash Flood Warning	RLX	Athens, Morgan	6 hr
Nov 6, 3:07 AM EST	Flash Flood Warning	RLX	Vinton	6 hr
Nov 6, 4:16 AM EST	Flash Flood Warning	RLX	Athens, Jackson, Meigs, Vinton	6 hr
Nov 6, 8:30 AM EST	Areal Flood Warning	RLX	Athens, Morgan	6 hr
Nov 6, 10:09 AM EST	Areal Flood Warning	RLX	Athens, Jackson, Meigs, Vinton	15 hr

Nearby

Flash Flood Warnings in West Virginia, 2017 Flash Flood Warnings in Ohio, 2017 Every flash flood warning in 2017

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.