Alert archive / Indiana / Flash Flood Warnings in 2015

Flash Flood Warning 18, NWS Indianapolis, IN

July 1, 2015Knox County, Indiana

NWS Indianapolis, IN issued this flash flood warning at Jul 1, 2015, 10:41 PM EDT for Knox County, 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, 2015, 10:41 PM EDT (02:41 UTC)
Expired: Jul 2, 2015, 1:30 AM EDT
In force: 3 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 02:42 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, 2.7 hours before the alert went out and 202 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: 65 J/kg
Mixed-layer CIN: -148 J/kg
Mixed-layer LCL: 997 m above ground
0-6 km bulk shear: 37 kt
0-1 km storm-relative helicity: -2 m²/s²
0-3 km storm-relative helicity: 85 m²/s²
Significant tornado parameter: -0.0
Supercell composite: -0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

675 
WGUS53 KIND 020241
FFWIND
INC083-020530-
/O.NEW.KIND.FF.W.0018.150702T0241Z-150702T0530Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
1041 PM EDT WED JUL 1 2015

THE NATIONAL WEATHER SERVICE IN INDIANAPOLIS HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  SOUTHERN KNOX COUNTY IN SOUTHWEST INDIANA...

* UNTIL 130 AM EDT

* AT 1040 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  SLOW MOVING THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS THE      
  WARNED AREA. DOPPLER RADAR ESTIMATES IN EXCESS OF 3 INCHES HAS     
  FALLEN ACROSS PORTIONS OF SOUTHERN KNOX COUNTY SINCE 9 PM. AN      
  ADDITIONAL ONE TO TWO INCHES IS POSSIBLE THROUGH 1 AM EDT.

* RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
  OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...     
  VINCENNES...DECKER...AND MONROE CITY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING. IF FLASH FLOODING IS OBSERVED ACT QUICKLY. DO
NOT ENTER THE WATER. TURN AROUND AND MOVE UP TO HIGHER GROUND TO
ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS SUBJECT TO FLOODING WHEN
WATER BEGINS RISING.

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY.

A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING.
IF YOU ARE IN THE WARNING AREA MOVE TO HIGHER GROUND IMMEDIATELY.
RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE
PRECAUTIONS TO PROTECT LIFE AND PROPERTY. DO NOT ATTEMPT TO CROSS
SWIFTLY FLOWING WATERS OR WATERS OF UNKNOWN DEPTH BY FOOT OR BY
AUTOMOBILE.

&&

LAT...LON 3842 8775 3848 8773 3851 8765 3855 8767
      3867 8760 3868 8754 3873 8751 3869 8727
      3867 8726 3868 8725 3854 8724 3852 8726
      3850 8730 3854 8736 3851 8738 3854 8740
      3853 8746 3849 8749 3849 8757 3844 8760

$$

RYAN

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 1, 9:26 PM EDT	Special Weather Statement	IND	Knox	49 min
Jul 1, 10:09 PM EDT	Areal Flood Advisory	IND	Daviess, Knox	3 hr
Jul 2, 12:58 AM EDT	Flash Flood Warning	IND	Daviess, Martin	6 hr
Jul 2, 1:13 AM EDT	Areal Flood Warning	IND	Knox	8 hr
Jul 2, 2:37 AM EDT	Areal Flood Advisory	IND	Greene, Sullivan	5 hr
Jul 2, 6:56 AM EDT	Areal Flood Warning	IND	Daviess, Martin	6 hr

Nearby

Flash Flood Warnings in Indiana, 2015 Every flash flood warning in 2015

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.