Alert archive / Indiana / Flash Flood Warnings in 2011

Flash Flood Warning 8, NWS Louisville, KY

April 19, 2011Jefferson County, Indiana

NWS Louisville, KY issued this flash flood warning at Apr 19, 2011, 8:27 AM EDT for Jefferson County, Indiana. 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
Apr 19, 2011, 8:27 AM EDT (12:27 UTC)
Expired
Apr 19, 2011, 11:30 AM EDT
In force
3 hr
Issued by
NWS Louisville, KY
Area
Storm-based polygon
Flood severity
None

County Jefferson County, IN

The radar

The Louisville radar (KLVX), 106 km from the middle of the area, began a volume at 12:26 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, 0.5 hours before the alert went out and 158 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 2011-04-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 2011-04-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 491 square meters per square second.19395878Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
554 m above ground
0-6 km bulk shear
54 kt
0-1 km storm-relative helicity
491 m²/s²
0-3 km storm-relative helicity
609 m²/s²
Significant tornado parameter
0.0
Supercell composite
2.1

Open this sounding in Storm Lab

The text

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

950 
WGUS53 KLMK 191227
FFWLMK
INC077-191530-
/O.NEW.KLMK.FF.W.0008.110419T1227Z-110419T1530Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LOUISVILLE KY
827 AM EDT TUE APR 19 2011

THE NATIONAL WEATHER SERVICE IN LOUISVILLE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  JEFFERSON COUNTY IN SOUTH CENTRAL INDIANA...

* UNTIL 1130 AM EDT

* AT 822 AM EDT...LOCAL LAW ENFORCEMENT OFFICIALS REPORTED FLOODING  
  STARTING TO DEVELOP FROM THUNDERSTORMS ALONG A LINE FROM CANAAN TO 
  20 MILES WEST OF DEPUTY...DRIFTING SOUTH AT 5 MPH.

* THE STORMS PRODUCING THE FLOODING RAINS WILL AFFECT WIRT...        
  CHINA...WAKEFIELD...VOLGA AND SMYRNA.

ADDITIONAL RAINFALL AMOUNTS OF ONE TO TWO INCHES ARE POSSIBLE IN THE 
WARNED AREA.

AT 820 AM RESIDENTS REPORTED WATER STARTING TO AFFECT ROADWAYS AT 
ROUTE 250 AND COUNTY ROAD 1000...ROUTE 7 AT BOYD ROAD...AND ROUTE 7 
AT DAWSON SMITH ROAD. 

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.

&&

LAT...LON 3892 8521 3876 8520 3874 8569 3881 8570
      3883 8563 3886 8563 3886 8559 3889 8558
      3889 8556 3892 8555 3893 8523

$$

13
2 follow-up statements
114 
WGUS73 KLMK 191341
FFSLMK

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LOUISVILLE KY
941 AM EDT TUE APR 19 2011

INC077-191530-
/O.CON.KLMK.FF.W.0008.000000T0000Z-110419T1530Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
JEFFERSON IN-
941 AM EDT TUE APR 19 2011

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1130 AM EDT FOR 
JEFFERSON COUNTY INDIANA...

AT 932 AM EDT...SHOWERS AND A FEW THUNDERSTORMS CONTINUED OVER 
NORTHERN AND CENTRAL SECTIONS OF JEFFERSON COUNTY. THOUGH THE RAIN 
HAD LESSENED SIGNIFICANTLY AND ONLY MINOR AMOUNTS OF ADDITIONAL 
RAINFALL ARE EXPECTED...IT WILL TAKE TIME FOR FLOODWATERS TO RECEDE.

LOCATIONS AT THE MOST RISK OF FLOODING INCLUDE EAST CAMP MEETING 
ROAD AT INDIAN KENTUCK CREEK AND LOW LYING AREAS ON LEMON ROAD 
BETWEEN BRYANTSBURG AND BARBERVILLE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

DO NOT DRIVE INTO FLOODWATERS!

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...COUNTRY ROADS...AS WELL AS FARMLAND ALONG THE
BANKS OF CREEKS AND STREAMS.

&&

LAT...LON 3892 8521 3876 8520 3874 8569 3881 8570
      3883 8563 3886 8563 3886 8559 3889 8558
      3889 8556 3892 8555 3893 8523

$$

13
303 
WGUS73 KLMK 191436
FFSLMK

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LOUISVILLE KY
1036 AM EDT TUE APR 19 2011

INC077-191530-
/O.CON.KLMK.FF.W.0008.000000T0000Z-110419T1530Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
JEFFERSON IN-
1036 AM EDT TUE APR 19 2011

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1130 AM EDT FOR
JEFFERSON COUNTY...

AT 1032 AM EDT...SCATTERED SHOWERS CONTINUED OVER NORTHERN AND 
CENTRAL SECTIONS OF JEFFERSON COUNTY. THOUGH THE RAIN HAD LESSENED 
SIGNIFICANTLY AND ONLY MINOR AMOUNTS OF ADDITIONAL RAINFALL ARE 
EXPECTED...IT WILL TAKE TIME FOR FLOODWATERS TO RECEDE. ALSO...LOCAL 
CREEKS ARE STILL ON THE RISE FROM THE EARLIER HEAVY RAIN.

LOCATIONS AT THE MOST RISK OF FLOODING INCLUDE EAST CAMP MEETING 
ROAD AT INDIAN KENTUCK CREEK AND LOW LYING AREAS ON LEMON ROAD 
BETWEEN BRYANTSBURG AND BARBERVILLE.

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.

&&

LAT...LON 3892 8521 3876 8520 3874 8569 3881 8570
      3883 8563 3886 8563 3886 8559 3889 8558
      3889 8556 3892 8555 3893 8523

$$

13

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 19, 3:13 AM EDTSpecial Weather StatementLMKJefferson47 min
Apr 19, 5:37 AM EDTSevere Thunderstorm WarningLMKJefferson, Scott32 min
Apr 19, 6:46 AM EDTAreal Flood AdvisoryLMKJefferson3 hr
Apr 19, 10:04 AM EDTRiver Flood WarningLMKJefferson, Scott44 hr

Nearby

Flash Flood Warnings in Indiana, 2011Every flash flood warning in 2011

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.