Alert archive / Indiana / Flash Flood Warnings in 2012

Flash Flood Warning 2, NWS Northern Indiana

May 7, 2012White County, Indiana

NWS Northern Indiana issued this flash flood warning at May 7, 2012, 4:55 AM EDT for White County, Indiana. It was in force for 4 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
May 7, 2012, 4:55 AM EDT (08:55 UTC)
Expired
May 7, 2012, 8:45 AM EDT
In force
4 hr
Issued by
NWS Northern Indiana
Area
Storm-based polygon
Flood severity
None

County White County, IN

The radar

The Indianapolis radar (KIND), 125 km from the middle of the area, began a volume at 08:55 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, 8.9 hours before the alert went out and 143 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 00:00Z on 2012-05-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1208 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 00:00Z on 2012-05-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -5 square meters per square second.1939Sfc1 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
1208 J/kg
Mixed-layer CIN
-88 J/kg
Mixed-layer LCL
1947 m above ground
0-6 km bulk shear
22 kt
0-1 km storm-relative helicity
-5 m²/s²
0-3 km storm-relative helicity
43 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

Open this sounding in Storm Lab

The text

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

043 
WGUS53 KIWX 070855
FFWIWX
INC181-071245-
/O.NEW.KIWX.FF.W.0002.120507T0855Z-120507T1245Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE NORTHERN INDIANA
455 AM EDT MON MAY 7 2012

THE NATIONAL WEATHER SERVICE IN NORTHERN INDIANA HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  SOUTHWESTERN WHITE COUNTY IN NORTHWEST INDIANA

* UNTIL 845 AM EDT

* AT 451 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED   
THUNDERSTORMS REDEVELOPING ACROSS PORTIONS OF SOUTHWESTERN WHITE 
COUNTY. RADAR ESTIMATES 3 INCHES OF RAIN OR MORE HAS FALLEN IN THE 
WARNING AREA. THESE STORMS WERE MOVING TO THE NORTHEAST AT 30 MPH. 

* THE STORMS PRODUCING FLASH FLOODING WILL OTHERWISE REMAIN OVER   
MAINLY RURAL AREAS OF SOUTHWESTERN WHITE COUNTY. THE FLOODING MAY 
BEGIN TO IMPACT PORTIONS OF INTERSTATE 65 BETWEEN MILE MARKERS 197 
AND 189. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...HIGHWAYS AND UNDERPASSES. ADDITIONALLY...COUNTRY
ROADS AND FARMLANDS ALONG THE BANKS OF CREEKS...STREAMS AND OTHER LOW
LYING AREAS ARE SUBJECT TO FLOODING.

TO REPORT FLOODING...HAVE THE NEAREST LAW ENFORCEMENT AGENCY RELAY
YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN
NORTHERN INDIANA.

&&

LAT...LON 4073 8710 4072 8702 4058 8694 4058 8710

$$
2 follow-up statements
684 
WGUS73 KIWX 071100
FFSIWX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE NORTHERN INDIANA
700 AM EDT MON MAY 7 2012

INC181-071245-
/O.CON.KIWX.FF.W.0002.000000T0000Z-120507T1245Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
WHITE IN-
700 AM EDT MON MAY 7 2012

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 845 AM EDT FOR
SOUTHWESTERN WHITE COUNTY...

NATIONAL WEATHER SERVICE DOPPLER RADAR ESTIMATES OVER 4 INCHES OF 
RAIN HAS FALLEN OVER SOUTHWESTERN WHITE COUNTY SINCE SUNDAY 
AFTERNOON. THUNDERSTORMS WITH HEAVY RAIN WILL LIKELY CONTINUE TO 
MOVE ACROSS THIS AREA THIS MORNING WITH ADDITIONAL RAINFALL UP TO A 
HALF INCH EXPECTED. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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. MOVE TO HIGHER GROUND.

STAY TUNED TO WEATHER RADIO OR LOCAL MEDIA OUTLETS FOR THE LATEST
FLOOD INFORMATION.

&&

LAT...LON 4073 8710 4072 8702 4058 8694 4058 8710

$$
560 
WGUS73 KIWX 071245
FFSIWX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE NORTHERN INDIANA
845 AM EDT MON MAY 7 2012

INC181-071250-
/O.EXP.KIWX.FF.W.0002.000000T0000Z-120507T1245Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
WHITE IN-
845 AM EDT MON MAY 7 2012

...THE FLASH FLOOD WARNING WILL EXPIRE AT 845 AM EDT FOR SOUTHWESTERN
WHITE COUNTY...

AT 840 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR ESTIMATED 
THAT BETWEEN 2 AND 4 INCHES OF RAIN HAD FALLEN ACROSS FAR SOUTHWEST 
WHITE COUNTY SINCE SUNDAY AFTERNOON. ADDITIONAL RAINFALL AMOUNTS 
THIS MORNING ARE EXPECTED TO RANGE BETWEEN ONE QUARTER TO ONE HALF 
OF AN INCH. NO REPORTS HAVE FLOODING HAVE BEEN RECEIVED. 
HOWEVER...THE COMBINATION OF THE RECENT HEAVY RAINFALL AND 
ADDITIONAL RAIN THIS MORNING WILL LIKELY RESULT IN PONDING OF WATER 
ON ROADWAYS THROUGH EARLY THIS AFTERNOON.

TO REPORT FLOODING...HAVE THE NEAREST LAW ENFORCEMENT AGENCY RELAY
YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN 
NORTHERN INDIANA.

LAT...LON 4073 8710 4072 8702 4058 8694 4058 8710

$$

The office that day

Everything else NWS Northern Indiana issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 7, 3:11 AM EDTSpecial Weather StatementIWXPulaski, White64 min
May 7, 4:36 AM EDTSpecial Weather StatementIWXWhitley24 min
May 7, 4:56 AM EDTSpecial Weather StatementIWXDeKalb, Steuben34 min
May 7, 5:34 AM EDTFlash Flood WarningIWXDeKalb, Elkhart, LaGrange, Noble, Steuben4 hr
May 7, 3:58 PM EDTSevere Thunderstorm WarningIWXJay53 min

Nearby

Flash Flood Warnings in Indiana, 2012Every flash flood warning in 2012

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.