Alert archive / Indiana / Areal Flood Warnings in 2016

Areal Flood Warning 21, NWS Indianapolis, IN

August 29, 2016Knox County, Indiana

NWS Indianapolis, IN issued this areal flood warning at Aug 29, 2016, 1:33 AM EDT for Knox County, Indiana. It was in force for 6 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: Aug 29, 2016, 1:33 AM EDT (05:33 UTC)
Expired: Aug 29, 2016, 7:30 AM EDT
In force: 6 hr
Issued by: NWS Indianapolis, IN
Area: Storm-based polygon
Flood severity: None

County Knox County, IN

The radar

The Evansville,IN radar (KVWX), 39 km from the middle of the area, began a volume at 05:33 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, 5.6 hours before the alert went out and 199 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 870 J/kg
Mixed-layer CIN: -65 J/kg
Mixed-layer LCL: 1034 m above ground
0-6 km bulk shear: 25 kt
0-1 km storm-relative helicity: 108 m²/s²
0-3 km storm-relative helicity: 180 m²/s²
Significant tornado parameter: 0.3
Supercell composite: 2.6

Open this sounding in Storm Lab

The text

As transmitted.

521 
WGUS43 KIND 290533
FLWIND

BULLETIN - IMMEDIATE BROADCAST REQUESTED
FLOOD WARNING
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
133 AM EDT MON AUG 29 2016

INC083-291130-
/O.NEW.KIND.FA.W.0021.160829T0533Z-160829T1130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
KNOX IN-
133 AM EDT MON AUG 29 2016

THE NATIONAL WEATHER SERVICE IN INDIANAPOLIS HAS ISSUED A

* FLOOD WARNING FOR...
  CENTRAL KNOX COUNTY IN SOUTHWESTERN INDIANA...

* UNTIL 730 AM EDT

* AT 133 AM EDT...LOCAL LAW ENFORCEMENT OFFICIALS REPORTED FLOODING.
  
* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  VINCENNES...MONROE CITY...BRUCEVILLE...DECKER AND VINCENNES
  UNIVERSITY.

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.

&&

LAT...LON 3854 8766 3859 8763 3859 8761 3860 8763
      3867 8758 3870 8752 3881 8750 3878 8736
      3864 8732 3853 8734 3854 8737 3852 8738
      3854 8739 3853 8746 3850 8749 3852 8754
      3849 8754 3850 8758 3845 8760 3844 8763

$$

PUMA

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 28, 10:34 PM EDT	Special Weather Statement	IND	Knox	41 min
Aug 28, 10:41 PM EDT	Flash Flood Warning	IND	Knox	3 hr
Aug 28, 10:52 PM EDT	Severe Thunderstorm Warning	IND	Knox	22 min
Aug 28, 11:40 PM EDT	Flash Flood Warning	IND	Sullivan	3 hr
Aug 29, 3:07 AM EDT	Areal Flood Warning	IND	Fountain, Montgomery, Tippecanoe, Warren	6 hr

Nearby

Areal Flood Warnings in Indiana, 2016 Every areal flood warning in 2016

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.