Alert archive / Indiana / Flash Flood Warnings in 2012

Flash Flood Warning 22, NWS Louisville, KY

July 18, 2012Perry County, Indiana

NWS Louisville, KY issued this flash flood warning at Jul 18, 2012, 6:44 PM CDT for Perry County, Indiana. It was in force for 116 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: Jul 18, 2012, 6:44 PM CDT (23:44 UTC)
Expired: Jul 18, 2012, 8:40 PM CDT
In force: 116 min
Issued by: NWS Louisville, KY
Area: Storm-based polygon
Flood severity: None

County Perry County, IN

The radar

The Louisville radar (KLVX), 71 km from the middle of the area, began a volume at 23:45 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

Nashville Metro, TN (KBNA), launched 12:00Z, 11.7 hours before the alert went out and 215 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: 2917 J/kg
Mixed-layer CIN: -33 J/kg
Mixed-layer LCL: 858 m above ground
0-6 km bulk shear: 10 kt
0-1 km storm-relative helicity: 31 m²/s²
0-3 km storm-relative helicity: 63 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

873 
WGUS53 KLMK 182344
FFWLMK
INC123-190140-
/O.NEW.KLMK.FF.W.0022.120718T2344Z-120719T0140Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LOUISVILLE KY
644 PM CDT WED JUL 18 2012

THE NATIONAL WEATHER SERVICE IN LOUISVILLE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  SOUTHWEST AND WEST CENTRAL PERRY COUNTY IN SOUTH CENTRAL 
  INDIANA...

* UNTIL 840 PM CDT

* AT 636 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  VERY HEAVY RAINFALL FROM A THUNDERSTORM NEAR GATCHEL...OR 21 
  MILES NORTHEAST OF ROCKPORT. THESE STORMS WERE NEARLY STATIONARY. 

* THE THUNDERSTORM PRODUCING FLASH FLOODING WILL BE NEAR...
  GATCHEL BY 710 PM CDT...
  LILLY DALE BY 735 PM CDT...

* LOCATIONS IMPACTED INCLUDE MAINLY RURAL AREAS OF CENTRAL PERRY
  COUNTY...INCLUDING GATCHEL AND LILLY DALE.

  FLASH FLOOD PRONE AREAS IN THIS WARNING...
  WINDY CREEK OVERFLOWS ASHTREE ROAD.
  COOPER BRANCH OVERFLOWS ATWOOD ROAD.

DOPPLER RADAR ESTIMATES THAT ISOLATED AMOUNTS OF 2 TO 4 INCHES OF 
RAIN MAY ALREADY HAVE FALLEN IN PARTS OF SOUTHWEST PERRY COUNTY WITH 
AN ADDITIONAL 1 TO 2 INCHES POSSIBLE AS MORE THUNDERSTORMS MOVE OVER 
THE AREA THROUGH 730 PM CDT. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY. MOVE TO HIGHER GROUND.

REPORT FLOODING TO LOCAL LAW ENFORCEMENT OR POST YOUR REPORT TO THE
NATIONAL WEATHER SERVICE LOUISVILLE FACEBOOK PAGE.

&&

LAT...LON 3812 8670 3797 8659 3792 8674 3803 8679
      3806 8678 3808 8678 3810 8677 3810 8679
      3811 8679

$$

TWF

2 follow-up statements

726 
WGUS73 KLMK 190025
FFSLMK

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LOUISVILLE KY
725 PM CDT WED JUL 18 2012

INC123-190140-
/O.CON.KLMK.FF.W.0022.000000T0000Z-120719T0140Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
PERRY IN-
725 PM CDT WED JUL 18 2012

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 840 PM CDT FOR 
SOUTHWEST AND WEST CENTRAL PERRY COUNTY...

AT 717 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO 
INDICATE THUNDERSTORMS PRODUCING VERY HEAVY RAIN OVER THE WARNED 
AREA.

* LOCATIONS IMPACTED INCLUDE MAINLY RURAL AREAS OF CENTRAL PERRY   
COUNTY....INCLUDING RANGER. ROUTES 37 AND 145 ARE AFFECTED BY THE 
HEAVY RAIN.

  FLASH FLOOD PRONE AREAS IN THIS WARNING...
  WINDY CREEK OVERFLOWS ASHTREE ROAD.
  COOPER BRANCH OVERFLOWS ATWOOD ROAD.

DOPPLER RADAR HAS INDICATED THAT SEVERAL INCHES OF RAIN LIKELY HAS 
ALREADY FALLEN IN PARTS OF SOUTHWEST PERRY COUNTY...WITH AN 
ADDITIONAL INCH OF RAIN POSSIBLE. THIS COULD RESULT IN POTENTIALLY 
SIGNIFICANT FLOODING.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

MOST FLOOD DEATHS OCCUR IN AUTOMOBILES. NEVER DRIVE YOUR VEHICLE INTO
AREAS WHERE THE WATER COVERS THE ROADWAY. FLOOD WATERS ARE USUALLY
DEEPER THAN THEY APPEAR. JUST ONE FOOT OF FLOWING WATER IS POWERFUL
ENOUGH TO SWEEP VEHICLES OFF THE ROAD. WHEN ENCOUNTERING FLOODED
ROADS MAKE THE SMART CHOICE...TURN AROUND...DONT DROWN.

REPORT SEVERE WEATHER TO LOCAL LAW ENFORCEMENT OR POST YOUR REPORT TO
THE NATIONAL WEATHER SERVICE LOUISVILLE FACEBOOK PAGE.

&&

LAT...LON 3812 8670 3797 8659 3792 8674 3803 8679
      3806 8678 3808 8678 3810 8677 3810 8679
      3811 8679

$$

TWF

868 
WGUS73 KLMK 190142
FFSLMK

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LOUISVILLE KY
842 PM CDT WED JUL 18 2012

INC123-190152-
/O.EXP.KLMK.FF.W.0022.000000T0000Z-120719T0140Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
PERRY IN-
842 PM CDT WED JUL 18 2012

...THE FLASH FLOOD WARNING HAS EXPIRED FOR CENTRAL PERRY COUNTY...


THE STORMS THAT PROMPTED THE WARNING HAVE MOVED OUT OF THE WARNED
AREA.

REPORT SEVERE WEATHER TO LOCAL LAW ENFORCEMENT OR POST YOUR REPORT TO
THE NATIONAL WEATHER SERVICE LOUISVILLE FACEBOOK PAGE.

LAT...LON 3812 8670 3797 8659 3792 8674 3803 8679
      3806 8678 3808 8678 3810 8677 3810 8679
      3811 8679

$$

SCHOETTMER

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 18, 2:26 AM CDT	Heat Advisory	LMK	Clark, Crawford, Dubois, Floyd, Harrison, Jefferson and 4 more	17 hr
Jul 18, 3:40 PM CDT	Special Weather Statement	LMK	Harrison	30 min
Jul 18, 4:01 PM CDT	Special Weather Statement	LMK	Scott, Washington	44 min
Jul 18, 4:19 PM CDT	Severe Thunderstorm Warning	LMK	Washington	31 min
Jul 18, 4:55 PM CDT	Special Weather Statement	LMK	Floyd	30 min
Jul 18, 5:03 PM CDT	Severe Thunderstorm Warning	LMK	Clark, Floyd, Harrison, Washington	32 min
Jul 18, 5:43 PM CDT	Special Weather Statement	LMK	Floyd, Harrison	27 min
Jul 18, 5:55 PM CDT	Special Weather Statement	LMK	Orange	25 min
Jul 18, 6:32 PM CDT	Areal Flood Advisory	LMK	Perry	88 min
Jul 18, 6:52 PM CDT	Special Weather Statement	LMK	Perry	28 min
Jul 18, 6:56 PM CDT	Severe Thunderstorm Warning	LMK	Perry	29 min

Nearby

Flash Flood Warnings in Indiana, 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.