Alert archive / Indiana / Areal Flood Advisories in 2021

Areal Flood Advisory 21, NWS Indianapolis, IN

July 1, 20214 counties in Indiana

NWS Indianapolis, IN issued this areal flood advisory at Jul 1, 2021, 8:57 AM EDT for 4 counties in Indiana. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued
Jul 1, 2021, 8:57 AM EDT (12:57 UTC)
Expired
Jul 1, 2021, 3:00 PM EDT
In force
6 hr
Issued by
NWS Indianapolis, IN
Area
Storm-based polygon

Counties Clay County, IN, Greene County, IN, Monroe County, IN, Owen County, IN

The radar

The Indianapolis radar (KIND), 76 km from the middle of the area, began a volume at 12:57 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 12:00Z, 1.0 hours before the alert went out and 188 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, Lincoln, IL at 12:00Z on 2021-07-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 340 joules per kilogram.LCLLFCEL10008507005003002001001 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, Lincoln, IL at 12:00Z on 2021-07-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -26 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
340 J/kg
Mixed-layer CIN
-23 J/kg
Mixed-layer LCL
653 m above ground
0-6 km bulk shear
19 kt
0-1 km storm-relative helicity
-26 m²/s²
0-3 km storm-relative helicity
33 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

504 
WGUS83 KIND 011257
FLSIND

Flood Advisory
National Weather Service Indianapolis IN
857 AM EDT Thu Jul 1 2021

INC021-055-105-119-011900-
/O.NEW.KIND.FA.Y.0021.210701T1257Z-210701T1900Z/
/00000.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Clay IN-Greene IN-Monroe IN-Owen IN-
857 AM EDT Thu Jul 1 2021

The National Weather Service in Indianapolis has issued a

* Flood Advisory for...
  Monroe County in south central Indiana...
  Northern Greene County in southwestern Indiana...
  Southwestern Clay County in west central Indiana...
  Southern Owen County in west central Indiana...

* Until 300 PM EDT Thursday.

* At 857 AM EDT, Doppler radar indicated heavy rain over the area. 
  Minor flooding is ongoing or expected to begin shortly in the 
  advisory area. Between 1 and over 2 inches of rain have fallen in 
  the last three hours.

* Some locations that will experience flooding include...
  Bloomington, Ellettsville, Jasonville, Worthington, Clay City, 
  Freedom, Solsberry, Whitehall, Coal City, Indiana University, 
  Harrodsburg, Smithville, Fairfax State Recreation Area, Monroe 
  Reservoir, Coalmont and Woodville Hills.

Additional rainfall amounts up to 1 inch are expected over the area. 
This additional rain will result in minor flooding.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Be aware of your surroundings and do not drive on flooded roads.

&&

LAT...LON 3935 8724 3920 8637 3899 8637 3899 8641
      3910 8723

$$

CP
1 follow-up statement
587 
WGUS83 KIND 011855
FLSIND

Flood Advisory
National Weather Service Indianapolis IN
255 PM EDT Thu Jul 1 2021

INC021-055-105-119-011905-
/O.EXP.KIND.FA.Y.0021.000000T0000Z-210701T1900Z/
/00000.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Clay IN-Greene IN-Monroe IN-Owen IN-
255 PM EDT Thu Jul 1 2021

...FLOOD ADVISORY WILL EXPIRE AT 3 PM EDT THIS AFTERNOON FOR MONROE, 
NORTHERN GREENE, SOUTHWESTERN CLAY AND SOUTHERN OWEN COUNTIES...

The heavy rain has ended and water is receding. Flooding is no 
longer expected to pose a threat. Please continue to heed remaining 
road closures.

LAT...LON 3935 8724 3920 8637 3899 8637 3899 8641
      3910 8723

$$

CP

The office that day

Everything else NWS Indianapolis, IN issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 30, 9:46 PM EDTFlash Flood WatchINDBartholomew, Brown, Clay, Daviess, Decatur, Greene and 17 more15 hr
Jul 1, 12:22 AM EDTFlash Flood WarningINDClay, Vigo3 hr
Jul 1, 2:00 AM EDTFlash Flood WarningINDHendricks, Marion3 hr
Jul 1, 2:24 AM EDTFlash Flood WarningINDFountain, Montgomery3 hr
Jul 1, 2:42 AM EDTFlash Flood WarningINDHancock, Shelby3 hr
Jul 1, 2:45 AM EDTFlash Flood WarningINDBoone, Hamilton, Hancock, Hendricks, Marion3 hr
Jul 1, 4:06 AM EDTFlash Flood WarningINDClinton, Hamilton, Tipton3 hr
Jul 1, 4:58 AM EDTAreal Flood AdvisoryINDHendricks, Marion3 hr
Jul 1, 8:00 AM EDTAreal Flood AdvisoryINDBoone, Hamilton, Hancock, Hendricks, Johnson, Marion and 6 more6 hr
Jul 1, 1:02 PM EDTRiver Flood WarningINDParke, Vermillion, Vigo62 hr

Nearby

Areal Flood Advisories in Indiana, 2021Every areal flood advisory 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.