Alert archive / Indiana / Areal Flood Advisories in 2021

Areal Flood Advisory 1, NWS Indianapolis, IN

February 28, 202117 counties in Indiana

NWS Indianapolis, IN issued this areal flood advisory at Feb 28, 2021, 9:15 AM EST for 17 counties in Indiana. It was in force for 5 hr.

The area

The counties it named.

The facts

Issued
Feb 28, 2021, 9:15 AM EST (14:15 UTC)
Expired
Feb 28, 2021, 2:00 PM EST
In force
5 hr
Issued by
NWS Indianapolis, IN
Area
Storm-based polygon

Counties Bartholomew County, IN, Brown County, IN, Daviess County, IN, Decatur County, IN, Greene County, IN, Jackson County, IN, Jennings County, IN, Johnson County, IN, Knox County, IN, Lawrence County, IN, Martin County, IN, Monroe County, IN, Morgan County, IN, Owen County, IN, Rush County, IN, Shelby County, IN, Sullivan County, IN

The radar

The Indianapolis radar (KIND), 65 km from the middle of the area, began a volume at 14:15 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, 2.3 hours before the alert went out and 225 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 2021-02-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 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 12:00Z on 2021-02-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 6 square meters per square second.1939587897117Sfc1 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
659 m above ground
0-6 km bulk shear
75 kt
0-1 km storm-relative helicity
6 m²/s²
0-3 km storm-relative helicity
231 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
Feb 28, 11:19 AM ESTRiver Flood WarningINDDaviess, Gibson, Knox, Pike7 days
Feb 28, 11:19 AM ESTRiver Flood WarningINDGibson, Knox10 days
Feb 28, 11:19 AM ESTRiver Flood WarningINDClay, Greene35 hr
Feb 28, 11:19 AM ESTRiver Flood WarningINDJackson, Lawrence, Washington4 days
Feb 28, 11:19 AM ESTRiver Flood WarningINDGreene, Monroe, Owen3 days
Feb 28, 11:19 AM ESTRiver Flood WarningINDDaviess, Greene, Knox6 days
Feb 28, 11:19 AM ESTRiver Flood WarningINDDaviess, Greene, Knox6 days
Feb 28, 11:19 AM ESTRiver Flood WarningINDKnox, Sullivan8 days
Feb 28, 11:19 AM ESTRiver Flood WarningINDMarion, Morgan44 hr
Feb 28, 11:19 AM ESTRiver Flood WarningINDBartholomew, Johnson, Shelby44 hr
Feb 28, 11:19 AM ESTRiver Flood WarningINDSullivan, Vigo7 days
Feb 28, 4:21 PM ESTRiver Flood WarningINDDelaware, Randolph27 hr
Feb 28, 4:21 PM ESTRiver Flood WarningINDJohnson31 hr
Feb 28, 4:21 PM ESTRiver Flood WarningINDTippecanoe30 hr
Feb 28, 4:21 PM ESTRiver Flood WarningINDParke, Vermillion, Vigo5 days
Feb 28, 4:21 PM ESTRiver Flood WarningINDMonroe, Morgan, Owen69 hr
Feb 28, 4:21 PM ESTRiver Flood WarningINDMonroe, Morgan, Owen67 hr
Feb 28, 4:21 PM ESTRiver Flood WarningINDLawrence, Martin8 days
Feb 28, 4:21 PM ESTRiver Flood WarningINDLawrence, Martin7 days
Feb 28, 4:21 PM ESTRiver Flood WarningINDKnox9 days
Feb 28, 4:21 PM ESTRiver Flood WarningINDGibson, Knox, Posey9 days

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.