Alert archive / West Virginia / Flash Flood Warnings in 2017

Flash Flood Warning 13, NWS Charleston, WV

May 20, 2017Cabell County, West Virginia

NWS Charleston, WV issued this flash flood warning at May 20, 2017, 5:22 PM EDT for Cabell County, West Virginia. It was in force for 3 hr. 1 report 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: May 20, 2017, 5:22 PM EDT (21:22 UTC)
Expired: May 20, 2017, 8:15 PM EDT
In force: 3 hr
Issued by: NWS Charleston, WV
Area: Storm-based polygon
Flood severity: None

County Cabell County, WV

The radar

The Charleston,WV radar (KRLX), 60 km from the middle of the area, began a volume at 21:22 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
May 20, 6:00 PM EDT	FLASH FLOOD	Huntington, WV	VIADUCTS IN HUNTINGTON HAVE FLOODED

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

The nearest sounding before it

Cncnati-Daytn, OH (KILN), launched 12:00Z, 9.4 hours before the alert went out and 165 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 559 m above ground
0-6 km bulk shear: 20 kt
0-1 km storm-relative helicity: 130 m²/s²
0-3 km storm-relative helicity: 151 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

406 
WGUS51 KRLX 202122
FFWRLX
WVC011-210015-
/O.NEW.KRLX.FF.W.0013.170520T2122Z-170521T0015Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Charleston WV
522 PM EDT SAT MAY 20 2017

The National Weather Service in Charleston West Virginia has issued a

* Flash Flood Warning for...
  West central Cabell County in central West Virginia...

* Until 815 PM EDT

* At 522 PM EDT, Doppler radar indicated thunderstorms producing
  heavy rain across the warned area. Up to one inch of rain has
  already fallen. Flash flooding is expected to begin shortly.

* Some locations that will experience flooding include...
  Huntington, Chesapeake, Proctorville, Barboursville and Pea Ridge. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Excessive runoff from heavy rainfall will cause flooding of streets
around Huntington. The highest threat areas for flooding are the
railroad viaducts at 1st, 8th, 10th, 16th and 20th streets. In
addition, the railroad viaduct at 14th street west may flood.
Flooding may also be occurring along 5th avenue between 24th and 25th
streets.

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 3843 8245 3844 8240 3843 8239 3844 8237
      3843 8232 3837 8232 3837 8244 3842 8248

$$

17

1 follow-up statement

754 
WGUS71 KRLX 202205
FFSRLX

Flash Flood Statement
National Weather Service Charleston WV
605 PM EDT SAT MAY 20 2017

WVC011-202215-
/O.CAN.KRLX.FF.W.0013.000000T0000Z-170521T0015Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Cabell WV-
605 PM EDT SAT MAY 20 2017

...THE FLASH FLOOD WARNING FOR WEST CENTRAL CABELL COUNTY 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 3843 8245 3844 8240 3843 8239 3844 8237
      3843 8232 3837 8232 3837 8244 3842 8248

$$

17

The office that day

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

Issued	Product	Office	Counties	Lasted
May 19, 8:22 PM EDT	Special Weather Statement	RLX	Cabell, Lincoln, Mason, Putnam, Roane	53 min
May 19, 9:05 PM EDT	Special Weather Statement	RLX	Kanawha	55 min
May 19, 9:29 PM EDT	Special Weather Statement	RLX	Boone, Lincoln	61 min
May 19, 9:53 PM EDT	Special Weather Statement	RLX	Clay, Fayette, Nicholas	67 min
May 19, 11:25 PM EDT	Special Weather Statement	RLX	Mingo	65 min
May 20, 2:06 PM EDT	Special Weather Statement	RLX	Pocahontas	39 min
May 20, 2:56 PM EDT	Flash Flood Watch	RLX	Boone, Lincoln, Logan, McDowell, Mingo, Raleigh and 2 more	31 hr
May 20, 3:19 PM EDT	Flash Flood Warning	RLX	Pocahontas	3 hr
May 20, 3:32 PM EDT	Severe Thunderstorm Warning	RLX	Wayne	28 min
May 20, 5:00 PM EDT	Special Weather Statement	RLX	Cabell	30 min
May 20, 5:11 PM EDT	Special Weather Statement	RLX	McDowell, Wyoming	34 min
May 20, 5:28 PM EDT	Severe Thunderstorm Warning	RLX	McDowell, Mingo, Wyoming	32 min
May 20, 6:39 PM EDT	Special Weather Statement	RLX	Nicholas	36 min
May 20, 6:43 PM EDT	Special Weather Statement	RLX	Boone, Fayette, Nicholas	32 min
May 20, 7:02 PM EDT	Severe Thunderstorm Warning	RLX	Boone, Kanawha	28 min
May 20, 7:14 PM EDT	Special Weather Statement	RLX	Fayette	31 min
May 20, 7:17 PM EDT	Special Weather Statement	RLX	Lincoln	28 min
May 20, 7:23 PM EDT	Severe Thunderstorm Warning	RLX	Boone, Fayette, Kanawha, Lincoln, Logan, Nicholas and 1 more	52 min
May 20, 7:30 PM EDT	Special Weather Statement	RLX	Pocahontas	45 min
May 20, 7:31 PM EDT	Special Weather Statement	RLX	Randolph	44 min
May 20, 7:59 PM EDT	Special Weather Statement	RLX	Braxton	46 min

Nearby

Flash Flood Warnings in West Virginia, 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.