Alert archive / Indiana / Flash Flood Warnings in 2021
Flash Flood Warning 22, NWS Indianapolis, IN
NWS Indianapolis, IN issued this flash flood warning at Jul 1, 2021, 2:45 AM EDT for 5 counties in 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
- Jul 1, 2021, 2:45 AM EDT (06:45 UTC)
- Expired
- Jul 1, 2021, 5:45 AM EDT
- In force
- 3 hr
- Issued by
- NWS Indianapolis, IN
- Area
- Storm-based polygon
- Flood severity
- None
Counties Boone County, IN, Hamilton County, IN, Hancock County, IN, Hendricks County, IN, Marion County, IN
The radar
The Indianapolis radar (KIND), 33 km from the middle of the area, began a volume at 06:48 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
Lincoln, IL (KILX), launched 00:00Z, 6.8 hours before the alert went out and 178 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
- 573 J/kg
- Mixed-layer CIN
- -21 J/kg
- Mixed-layer LCL
- 892 m above ground
- 0-6 km bulk shear
- 21 kt
- 0-1 km storm-relative helicity
- 30 m²/s²
- 0-3 km storm-relative helicity
- 44 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.7
The text
As transmitted.
948
WGUS53 KIND 010645
FFWIND
INC011-057-059-063-097-010945-
/O.NEW.KIND.FF.W.0022.210701T0645Z-210701T0945Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Indianapolis IN
245 AM EDT Thu Jul 1 2021
The National Weather Service in Indianapolis has issued a
* Flash Flood Warning for...
Southern Boone County in central Indiana...
Southern Hamilton County in central Indiana...
Northwestern Hancock County in central Indiana...
Northern Hendricks County in central Indiana...
Northern Marion County in central Indiana...
* Until 545 AM EDT.
* At 245 AM EDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Between 0.5 and 1.5 inches of
rain have fallen...mainly across southern Boone and northern
portions of Hendricks and Marion Counties. Additional rainfall
amounts of 1 to 2 inches are possible in the warned area...focused
especially across the northern Indianapolis suburbs. Flash
flooding is ongoing or expected to begin shortly.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Radar.
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...
Indianapolis, Carmel, Fishers, Lawrence, Brownsburg, Zionsville,
McCordsville, Pittsboro, Whitestown, Meridian Hills, Jamestown,
Rocky Ripple, North Salem, Lizton, Advance, Williams Creek,
Wynnedale, Spring Hill, Crows Nest and North Crows Nest.
This includes the following highways...
Interstate 65 between mile markers 121 and 137.
Interstate 69 between mile markers 200 and 208.
Interstate 74 between mile markers 47 and 68.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Be especially cautious at night when it is harder to recognize the
dangers of flooding.
Be aware of your surroundings and do not drive on flooded roads.
&&
LAT...LON 4004 8670 3997 8586 3996 8586 3983 8590
3984 8669 3986 8669 3986 8670 3988 8669
3990 8670 3992 8670 3996 8670 3997 8670
4000 8670 4001 8670
FLASH FLOOD...RADAR INDICATED
$$
Ryan2 follow-up statements
390
WGUS73 KIND 010816 RRA
FFSIND
Flash Flood Statement
National Weather Service Indianapolis IN
416 AM EDT Thu Jul 1 2021
INC011-057-059-063-097-010945-
/O.CON.KIND.FF.W.0022.000000T0000Z-210701T0945Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Boone IN-Hamilton IN-Hancock IN-Hendricks IN-Marion IN-
416 AM EDT Thu Jul 1 2021
...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 545 AM EDT EARLY THIS
MORNING FOR SOUTHERN BOONE, SOUTHERN HAMILTON, NORTHWESTERN HANCOCK,
NORTHERN HENDRICKS AND NORTHERN MARION COUNTIES...
At 416 AM EDT, Doppler radar indicated thunderstorms producing heavy
rain across the warned area. Between 1 and 2 inches of rain have
fallen over much of the warned area. Additional rainfall amounts up
to an inch are possible. Flash flooding is ongoing or expected to
begin shortly.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Radar.
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...
Indianapolis, Carmel, Fishers, Lawrence, Brownsburg, Zionsville,
McCordsville, Pittsboro, Whitestown, Meridian Hills, Jamestown,
Rocky Ripple, North Salem, Lizton, Advance, Williams Creek,
Wynnedale, Spring Hill, Crows Nest and North Crows Nest.
This includes the following highways...
Interstate 65 between mile markers 120 and 136.
Interstate 69 between mile markers 200 and 208.
Interstate 74 between mile markers 47 and 68.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Be especially cautious at night when it is harder to recognize the
dangers of flooding.
Be aware of your surroundings and do not drive on flooded roads.
&&
LAT...LON 4004 8670 3997 8586 3996 8586 3983 8590
3984 8669 3986 8669 3986 8670 3988 8669
3990 8670 3992 8670 3996 8670 3997 8670
4000 8670 4001 8670
FLASH FLOOD...RADAR INDICATED
$$
Ryan469
WGUS73 KIND 010943
FFSIND
Flash Flood Statement
National Weather Service Indianapolis IN
543 AM EDT Thu Jul 1 2021
INC011-057-059-063-097-010953-
/O.EXP.KIND.FF.W.0022.000000T0000Z-210701T0945Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Boone IN-Hamilton IN-Hancock IN-Hendricks IN-Marion IN-
543 AM EDT Thu Jul 1 2021
...FLASH FLOOD WARNING WILL EXPIRE AT 545 AM EDT EARLY THIS MORNING
FOR SOUTHERN BOONE, SOUTHERN HAMILTON, NORTHWESTERN HANCOCK,
NORTHERN HENDRICKS AND NORTHERN MARION COUNTIES...
Flood waters have receded. Flash flooding is no longer expected to
pose a threat. Please continue to heed remaining road closures.
A Flash Flood Watch remains in effect until 200 PM EDT Thursday for
portions of central Indiana, south central Indiana, southeast
Indiana, southwest Indiana and west central Indiana.
LAT...LON 4004 8670 3997 8586 3996 8586 3983 8590
3984 8669 3986 8669 3986 8670 3988 8669
3990 8670 3992 8670 3996 8670 3997 8670
4000 8670 4001 8670
$$
RyanThe office that day
Everything else NWS Indianapolis, IN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 30, 9:46 PM EDT | Flash Flood Watch | IND | Bartholomew, Brown, Clay, Daviess, Decatur, Greene and 17 more | 15 hr |
| Jul 1, 12:22 AM EDT | Flash Flood Warning | IND | Clay, Vigo | 3 hr |
| Jul 1, 2:00 AM EDT | Flash Flood Warning | IND | Hendricks, Marion | 3 hr |
| Jul 1, 2:24 AM EDT | Flash Flood Warning | IND | Fountain, Montgomery | 3 hr |
| Jul 1, 2:42 AM EDT | Flash Flood Warning | IND | Hancock, Shelby | 3 hr |
| Jul 1, 4:06 AM EDT | Flash Flood Warning | IND | Clinton, Hamilton, Tipton | 3 hr |
| Jul 1, 4:58 AM EDT | Areal Flood Advisory | IND | Hendricks, Marion | 3 hr |
| Jul 1, 8:00 AM EDT | Areal Flood Advisory | IND | Boone, Hamilton, Hancock, Hendricks, Johnson, Marion and 6 more | 6 hr |
| Jul 1, 8:57 AM EDT | Areal Flood Advisory | IND | Clay, Greene, Monroe, Owen | 6 hr |
| Jul 1, 1:02 PM EDT | River Flood Warning | IND | Parke, Vermillion, Vigo | 62 hr |
Nearby
Flash 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.