Alert archive / Kentucky / Flash Flood Warnings in 2017

Flash Flood Warning 18, NWS Charleston, WV

May 27, 2017Carter County, Kentucky

NWS Charleston, WV issued this flash flood warning at May 27, 2017, 6:52 PM EDT for Carter County, Kentucky. It was in force for 3 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 27, 2017, 6:52 PM EDT (22:52 UTC)
Expired
May 27, 2017, 9:45 PM EDT
In force
3 hr
Issued by
NWS Charleston, WV
Area
Storm-based polygon
Flood severity
None

County Carter County, KY

The radar

The Jackson,KY radar (KJKL), 76 km from the middle of the area, began a volume at 22:54 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, 10.9 hours before the alert went out and 142 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 2017-05-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 794 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 2017-05-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 64 square meters per square second.1939587897Sfc1 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
794 J/kg
Mixed-layer CIN
-18 J/kg
Mixed-layer LCL
711 m above ground
0-6 km bulk shear
45 kt
0-1 km storm-relative helicity
64 m²/s²
0-3 km storm-relative helicity
94 m²/s²
Significant tornado parameter
0.2
Supercell composite
1.3

Open this sounding in Storm Lab

The text

As transmitted.

145 
WGUS51 KRLX 272252
FFWRLX
KYC043-280145-
/O.NEW.KRLX.FF.W.0018.170527T2252Z-170528T0145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Charleston WV
652 PM EDT SAT MAY 27 2017

The National Weather Service in Charleston West Virginia has issued a

* Flash Flood Warning for...
  Carter County in northeastern Kentucky...

* Until 945 PM EDT

* At 649 PM EDT, Doppler radar indicated strong thunderstorms 
  producing very heavy rain across the warned area, especially in 
  the southern and western part of the county. Storms are expected 
  to continue through at least through 8 PM. Flash flooding is 
  expected to begin shortly.

* Some locations that will experience flooding include...
  Grayson, Olive Hill, Grayson Lake State Park, Carter Caves State
  Park, Denton, Grahn, Soldier, Globe, Willard and Hitchins.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Flash Flood Warning means that flooding is imminent or occurring.
If you are in the warned area move to higher ground immediately.
Residents living along streams and creeks should take immediate
precautions to protect life and property.

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 3833 8332 3833 8327 3834 8323 3842 8324
      3843 8322 3827 8279 3825 8279 3818 8290
      3817 8295 3818 8299 3820 8301 3820 8304
      3818 8305 3823 8309 3824 8314 3827 8317
      3823 8322 3820 8323 3821 8330 3832 8334

$$

05
1 follow-up statement
950 
WGUS71 KRLX 280042
FFSRLX

Flash Flood Statement
National Weather Service Charleston WV
842 PM EDT SAT MAY 27 2017

KYC043-280046-
/O.CAN.KRLX.FF.W.0018.000000T0000Z-170528T0145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Carter KY-
842 PM EDT SAT MAY 27 2017

...THE FLASH FLOOD WARNING FOR CARTER COUNTY IS CANCELLED...

Thunderstorms have moved out of the warned area, with little or no 
further showers expected through 945 PM. Thus, additional flooding 
is not expected and the warning is cancelled. However, please 
continue to heed any remaining road closures that may have 
occurred from previous flooding.

LAT...LON 3833 8332 3833 8327 3834 8323 3842 8324
      3843 8322 3827 8279 3825 8279 3818 8290
      3817 8295 3818 8299 3820 8301 3820 8304
      3818 8305 3823 8309 3824 8314 3827 8317
      3823 8322 3820 8323 3821 8330 3832 8334

$$

05

The office that day

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

IssuedProductOfficeCountiesLasted
May 27, 4:14 AM EDTFlash Flood WatchRLXBoyd, Carter, Lawrence39 hr
May 27, 5:41 PM EDTSpecial Weather StatementRLXBoyd34 min
May 27, 6:05 PM EDTSpecial Weather StatementRLXCarter25 min
May 27, 6:08 PM EDTSevere Thunderstorm WarningRLXCarter37 min
May 27, 6:11 PM EDTSpecial Weather StatementRLXBoyd, Carter94 min
May 27, 6:44 PM EDTSevere Thunderstorm WarningRLXCarter31 min

Nearby

Flash Flood Warnings in Kentucky, 2017Every 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.