Alert archive / Indiana / Areal Flood Advisories in 2020

Areal Flood Advisory 21, NWS Indianapolis, IN

June 30, 20204 counties in Indiana

NWS Indianapolis, IN issued this areal flood advisory at Jun 30, 2020, 1:52 AM EDT for 4 counties in Indiana. It was in force for 3 hr.

The area

The counties it named.

The facts

Issued
Jun 30, 2020, 1:52 AM EDT (05:52 UTC)
Expired
Jun 30, 2020, 4:45 AM EDT
In force
3 hr
Issued by
NWS Indianapolis, IN
Area
Storm-based polygon

Counties Johnson County, IN, Marion County, IN, Morgan County, IN, Shelby County, IN

The radar

The Indianapolis radar (KIND), 21 km from the middle of the area, began a volume at 05:52 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 00:00Z, 5.9 hours before the alert went out and 200 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 00:00Z on 2020-06-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 397 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Cncnati-Daytn, OH at 00:00Z on 2020-06-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 10 square meters per square second.193958Sfc1 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
397 J/kg
Mixed-layer CIN
-15 J/kg
Mixed-layer LCL
1513 m above ground
0-6 km bulk shear
13 kt
0-1 km storm-relative helicity
10 m²/s²
0-3 km storm-relative helicity
29 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 29, 8:27 PM EDTSpecial Weather StatementINDHendricks48 min
Jun 29, 8:48 PM EDTAreal Flood AdvisoryINDHendricks, Morgan3 hr
Jun 29, 8:54 PM EDTAreal Flood AdvisoryINDBartholomew, Brown3 hr
Jun 29, 9:17 PM EDTSpecial Weather StatementINDMorgan28 min
Jun 29, 9:34 PM EDTAreal Flood AdvisoryINDJackson3 hr
Jun 29, 10:16 PM EDTSpecial Weather StatementINDScott29 min
Jun 29, 10:46 PM EDTAreal Flood AdvisoryINDFountain, Tippecanoe, Warren3 hr
Jun 30, 4:39 PM EDTAreal Flood AdvisoryINDDelaware, Henry, Randolph2 hr
Jun 30, 5:00 PM EDTSpecial Weather StatementINDMadison30 min
Jun 30, 5:30 PM EDTAreal Flood AdvisoryINDHamilton, Madison, Tipton3 hr
Jun 30, 5:40 PM EDTAreal Flood WarningINDMadison3 hr
Jun 30, 5:55 PM EDTAreal Flood WarningINDHamilton, Tipton3 hr

Nearby

Areal Flood Advisories in Indiana, 2020Every areal flood advisory in 2020

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.