Alert archive / Kentucky / Flash Flood Warnings in 2012

Flash Flood Warning 15, NWS Louisville, KY

May 29, 2012Jefferson County, Oldham County, Kentucky

NWS Louisville, KY issued this flash flood warning at May 29, 2012, 9:20 AM EDT for Jefferson County, Oldham 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 29, 2012, 9:20 AM EDT (13:20 UTC)
Expired: May 29, 2012, 12:15 PM EDT
In force: 3 hr
Issued by: NWS Louisville, KY
Area: Storm-based polygon
Flood severity: None

Counties Jefferson County, KY, Oldham County, KY

The radar

The Louisville radar (KLVX), 65 km from the middle of the area, began a volume at 13:22 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.

The nearest sounding before it

Cncnati-Daytn, OH (KILN), launched 12:00Z, 1.3 hours before the alert went out and 182 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: 1782 J/kg
Mixed-layer CIN: -30 J/kg
Mixed-layer LCL: 920 m above ground
0-6 km bulk shear: 23 kt
0-1 km storm-relative helicity: 67 m²/s²
0-3 km storm-relative helicity: 39 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.8

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

357 
WGUS53 KLMK 291320
FFWLMK
KYC111-185-291615-
/O.NEW.KLMK.FF.W.0015.120529T1320Z-120529T1615Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LOUISVILLE KY
920 AM EDT TUE MAY 29 2012

THE NATIONAL WEATHER SERVICE IN LOUISVILLE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  EASTERN JEFFERSON COUNTY IN NORTH CENTRAL KENTUCKY...
  OLDHAM COUNTY IN NORTH CENTRAL KENTUCKY...

* UNTIL 1215 PM EDT

* AT 916 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED   
  UP TO 3 INCHES OF RAINFALL FROM THUNDERSTORMS OVER THE WARNED AREA.

* LOCATIONS IMPACTED INCLUDE...LA GRANGE...ANCHORAGE...LYNDON...
  PROSPECT...

  IN ADDITION...RIVER BLUFF...PARK LAKE AND RUSSELL CORNER ARE
  INCLUDED IN THIS FLASH FLOOD WARNING.

  FLASH FLOOD PRONE AREAS IN THIS WARNING...
  LOW LYING AREA AT TAYLORSVILLE ROAD AND THE RAILROAD BRIDGE
  OVERFLOWS.
  HITE CREEK OVERFLOWS ONTO HIGHWAY 22.

ADDITIONAL RAINFALL AMOUNTS OF 1 TO 2 INCHES ARE POSSIBLE IN THE 
WARNED AREA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...URBAN AREAS...HIGHWAYS...STREETS AND UNDERPASSES
AS WELL AS OTHER DRAINAGE AREAS AND LOW LYING SPOTS.

IN HILLY TERRAIN THERE ARE HUNDREDS OF LOW WATER CROSSINGS WHICH ARE
POTENTIALLY DANGEROUS IN HEAVY RAIN. DO NOT ATTEMPT TO TRAVEL ACROSS
FLOODED ROADS. FIND ALTERNATE ROUTES. IT TAKES ONLY A FEW INCHES OF
SWIFTLY FLOWING WATER TO CARRY VEHICLES AWAY.

&&

LAT...LON 3848 8533 3846 8535 3844 8533 3840 8532
      3836 8528 3835 8529 3829 8543 3830 8545
      3828 8546 3818 8561 3841 8563

$$

RAS

The office that day

Everything else NWS Louisville, KY issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 29, 5:27 AM EDT	Special Weather Statement	LMK	Metcalfe	33 min
May 29, 5:48 AM EDT	Special Weather Statement	LMK	Ohio	42 min
May 29, 6:23 AM EDT	Special Weather Statement	LMK	Grayson	37 min
May 29, 7:08 AM EDT	Special Weather Statement	LMK	Meade	37 min
May 29, 7:11 AM EDT	Special Weather Statement	LMK	Jefferson	34 min
May 29, 7:14 AM EDT	Severe Thunderstorm Warning	LMK	Jefferson	31 min
May 29, 7:31 AM EDT	Special Weather Statement	LMK	Hardin	29 min
May 29, 7:37 AM EDT	Special Weather Statement	LMK	Jefferson, Oldham	53 min
May 29, 8:14 AM EDT	Areal Flood Advisory	LMK	Jefferson	3 hr
May 29, 8:17 AM EDT	Special Weather Statement	LMK	Breckinridge, Meade	28 min
May 29, 8:32 AM EDT	Flash Flood Warning	LMK	Jefferson	3 hr
May 29, 8:36 AM EDT	Special Weather Statement	LMK	Jefferson, Oldham	84 min
May 29, 8:38 AM EDT	Special Weather Statement	LMK	Jefferson, Oldham	82 min
May 29, 9:00 AM EDT	Special Weather Statement	LMK	Oldham	30 min
May 29, 9:17 AM EDT	Special Weather Statement	LMK	Logan	43 min
May 29, 9:58 AM EDT	Areal Flood Advisory	LMK	Breckinridge, Grayson	2 hr
May 29, 10:00 AM EDT	Severe Thunderstorm Warning	LMK	Logan	30 min
May 29, 10:16 AM EDT	Special Weather Statement	LMK	Breckinridge, Bullitt, Grayson, Hardin, Nelson, Spencer and 1 more	44 min
May 29, 10:30 AM EDT	Special Weather Statement	LMK	Meade	30 min
May 29, 11:07 AM EDT	Special Weather Statement	LMK	Jefferson	38 min
May 29, 11:25 AM EDT	Areal Flood Warning	LMK	Jefferson	4 hr
May 29, 11:26 AM EDT	Areal Flood Advisory	LMK	Breckinridge, Ohio	3 hr
May 29, 12:01 PM EDT	Special Weather Statement	LMK	Hardin	59 min
May 29, 12:12 PM EDT	Special Weather Statement	LMK	Madison	48 min
May 29, 12:13 PM EDT	Areal Flood Warning	LMK	Jefferson, Oldham	3 hr
May 29, 12:15 PM EDT	Severe Thunderstorm Warning	LMK	Madison	30 min
May 29, 1:03 PM EDT	Areal Flood Advisory	LMK	Garrard, Lincoln, Madison	2 hr
May 29, 5:26 PM EDT	Special Weather Statement	LMK	Logan	49 min
May 29, 5:29 PM EDT	Special Weather Statement	LMK	Butler	46 min
May 29, 6:00 PM EDT	Severe Thunderstorm Warning	LMK	Logan	30 min

Nearby

Flash Flood Warnings in Kentucky, 2012 Every flash flood warning 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.