Alert archive / Kentucky / Flash Flood Warnings in 2021
Flash Flood Warning 49, NWS Louisville, KY
NWS Louisville, KY issued this flash flood warning at Aug 30, 2021, 1:04 PM EDT for 4 counties in Kentucky; Clark County, Floyd County, Harrison County, Indiana. It was in force for 96 min. 2 reports 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
- Aug 30, 2021, 1:04 PM EDT (17:04 UTC)
- Expired
- Aug 30, 2021, 2:40 PM EDT
- In force
- 96 min
- Issued by
- NWS Louisville, KY
- Area
- Storm-based polygon
- Flood severity
- None
Counties Clark County, IN, Floyd County, IN, Harrison County, IN, Franklin County, KY, Jefferson County, KY, Oldham County, KY, Shelby County, KY
The radar
The Louisville radar (KLVX), 43 km from the middle of the area, began a volume at 17:04 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 |
|---|---|---|---|
| Aug 30, 1:35 PM EDT | FLASH FLOOD | Lyndon, KY | MINOR STREET FLOODING, SMALL CREEKS OVERFLOWING. |
| Aug 30, 2:06 PM EDT | FLASH FLOOD | 1 Ese Shelbyville, KY | INTERSECTION OF 8TH AND WASHINGTON CLOSED DUE TO HIGH WATER. |
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, 5.1 hours before the alert went out and 204 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.
- Mixed-layer CAPE
- 185 J/kg
- Mixed-layer CIN
- -112 J/kg
- Mixed-layer LCL
- 1095 m above ground
- 0-6 km bulk shear
- 23 kt
- 0-1 km storm-relative helicity
- -24 m²/s²
- 0-3 km storm-relative helicity
- 25 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The text
As transmitted.
620
WGUS53 KLMK 301704
FFWLMK
INC019-043-061-KYC073-111-185-211-302015-
/O.NEW.KLMK.FF.W.0049.210830T1704Z-210830T2015Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Louisville KY
104 PM EDT Mon Aug 30 2021
The National Weather Service in Louisville has issued a
* Flash Flood Warning for...
Southwestern Clark County in south central Indiana...
Floyd County in south central Indiana...
Eastern Harrison County in south central Indiana...
Southwestern Franklin County in central Kentucky...
Jefferson County in central Kentucky...
Southern Oldham County in central Kentucky...
Shelby County in central Kentucky...
* Until 415 PM EDT.
* At 104 PM EDT, Doppler radar, automated rain gauges, and public
reports indicated thunderstorms producing heavy rain across the
warned area. Between 2 and 3 inches of rain have fallen. The
rainfall rate is 2 to 3 inches per hour. Flash flooding is ongoing
or expected to begin shortly.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Radar and automated gauges.
IMPACT...Flash flooding of small creeks and streams, urban
areas, highways, streets and underpasses as well as
other poor drainage and low-lying areas.
* Some locations that will experience flash flooding include...
Louisville, Frankfort, Jeffersonville, New Albany, Jeffersontown,
St. Matthews, Shively, Shelbyville, Lyndon, and Middletown.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Be aware of your surroundings and do not drive on flooded roads.
&&
LAT...LON 3843 8575 3828 8480 3812 8487 3815 8542
3805 8602 3822 8618 3842 8614
FLASH FLOOD...RADAR AND GAUGE INDICATED
EXPECTED RAINFALL...2-3 INCHES IN 1 HOUR
$$
132 follow-up statements
727
WGUS73 KLMK 301817
FFSLMK
Flash Flood Statement
National Weather Service Louisville KY
217 PM EDT Mon Aug 30 2021
INC019-KYC185-301827-
/O.CAN.KLMK.FF.W.0049.000000T0000Z-210830T2015Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Clark IN-Oldham KY-
217 PM EDT Mon Aug 30 2021
...FLASH FLOOD WARNING IS CANCELLED FOR SOUTHWESTERN CLARK AND
SOUTHERN OLDHAM COUNTIES...
Flooding is no longer expected to pose a threat. Please continue to
heed remaining road closures.
LAT...LON 3805 8602 3822 8618 3828 8583 3827 8574
3830 8529 3828 8480 3812 8487 3815 8542
$$
INC043-061-KYC073-111-211-302015-
/O.CON.KLMK.FF.W.0049.000000T0000Z-210830T2015Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Floyd IN-Harrison IN-Franklin KY-Jefferson KY-Shelby KY-
217 PM EDT Mon Aug 30 2021
...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 415 PM EDT THIS
AFTERNOON FOR SOUTH CENTRAL FLOYD, SOUTHEASTERN HARRISON,
SOUTHWESTERN FRANKLIN, JEFFERSON AND SHELBY COUNTIES...
At 217 PM EDT, Doppler radar and automated rain gauges indicated
thunderstorms producing heavy rain across the warned area. Between 2
and 3 inches of rain have fallen. The rainfall rate is 1 to 2 inches
per hour. Flash flooding is ongoing or expected to begin shortly.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Radar and automated gauges.
IMPACT...Flash flooding of small creeks and streams, urban areas,
highways, streets and underpasses as well as other poor
drainage and low-lying areas.
Some locations that will experience flash flooding include...
Louisville, Frankfort, Jeffersonville, New Albany, Jeffersontown,
St. Matthews, Shively, Shelbyville, Lyndon, and Middletown.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Be aware of your surroundings and do not drive on flooded roads.
&&
LAT...LON 3805 8602 3822 8618 3828 8583 3827 8574
3830 8529 3828 8480 3812 8487 3815 8542
FLASH FLOOD...RADAR AND GAUGE INDICATED
EXPECTED RAINFALL...2-3 INCHES IN 1 HOUR
$$
13318
WGUS73 KLMK 301840
FFSLMK
Flash Flood Statement
National Weather Service Louisville KY
240 PM EDT Mon Aug 30 2021
INC043-061-KYC073-111-211-301850-
/O.CAN.KLMK.FF.W.0049.000000T0000Z-210830T2015Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Floyd IN-Harrison IN-Franklin KY-Jefferson KY-Shelby KY-
240 PM EDT Mon Aug 30 2021
...FLASH FLOOD WARNING IS CANCELLED FOR SOUTH CENTRAL FLOYD,
SOUTHEASTERN HARRISON, SOUTHWESTERN FRANKLIN, JEFFERSON, AND SHELBY
COUNTIES...
The heavy rain has ended. Please continue to heed any road closures.
LAT...LON 3805 8602 3822 8618 3828 8583 3827 8574
3830 8529 3828 8480 3812 8487 3815 8542
$$
13The office that day
Everything else NWS Louisville, KY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 30, 3:37 AM EDT | Flash Flood Watch | LMK | Adair, Allen, Anderson, Barren, Bourbon, Boyle and 41 more | 40 hr |
| Aug 30, 12:29 PM EDT | Special Weather Statement | LMK | Franklin, Henry, Jefferson, Oldham, Scott, Shelby | 46 min |
| Aug 30, 12:41 PM EDT | Special Weather Statement | LMK | Scott | 34 min |
| Aug 30, 12:47 PM EDT | Areal Flood Advisory | LMK | Anderson, Franklin, Henry, Jefferson, Oldham, Shelby and 1 more | 3 hr |
| Aug 30, 12:53 PM EDT | Flash Flood Warning | LMK | Harrison, Scott | 3 hr |
| Aug 30, 1:34 PM EDT | Areal Flood Advisory | LMK | Anderson, Bourbon, Clark, Fayette, Franklin, Garrard and 5 more | 3 hr |
| Aug 30, 3:59 PM EDT | Areal Flood Advisory | LMK | Breckinridge, Meade | 2 hr |
| Aug 30, 4:33 PM EDT | Areal Flood Advisory | LMK | Breckinridge, Hancock | 117 min |
| Aug 30, 6:29 PM EDT | Areal Flood Advisory | LMK | Allen, Barren, Monroe | 3 hr |
| Aug 30, 6:54 PM EDT | Areal Flood Advisory | LMK | Butler, Grayson | 3 hr |
| Aug 30, 5:24 PM EDT | Areal Flood Advisory | LMK | Dubois | 2 hr |
| Aug 30, 5:35 PM EDT | Flash Flood Warning | LMK | Dubois | 4 hr |
| Aug 30, 6:38 PM EDT | Areal Flood Advisory | LMK | Orange, Washington | 3 hr |
| Aug 30, 7:06 PM EDT | Flash Flood Warning | LMK | Dubois | 3 hr |
| Aug 30, 7:34 PM EDT | Flash Flood Warning | LMK | Orange, Washington | 2 hr |
Nearby
Flash Flood Warnings in Kentucky, 2021Flash Flood Warnings in Indiana, 2021Every flash flood warning in 2021
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.