Alert archive / Michigan / Flash Flood Warnings in 2011

Flash Flood Warning 19, NWS Northern Indiana

July 1, 2011Berrien County, Michigan; LaPorte County, Indiana

NWS Northern Indiana issued this flash flood warning at Jul 1, 2011, 10:16 AM EDT for Berrien County, Michigan; LaPorte County, Indiana. It was in force for 6 hr. 2 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Jul 1, 2011, 10:16 AM EDT (14:16 UTC)
Expired: Jul 1, 2011, 4:15 PM EDT
In force: 6 hr
Issued by: NWS Northern Indiana
Area: Storm-based polygon
Flood severity: None

Counties LaPorte County, IN, Berrien County, MI

The radar

The Northern Indiana radar (KIWX), 102 km from the middle of the area, began a volume at 14:18 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.

What was reported inside it

Time	Report	Where	Remark
Jul 1, 2:57 PM EDT	HEAVY RAIN 4.1	Michigan City, IN	RAIN FELL BETWEEN 5AM AND 3PM
Jul 1, 2:58 PM EDT	HEAVY RAIN 3.24	Trail Creek, IN	24HR TOTAL RAINFALL.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Lincoln, IL (KILX), 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-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: 438 J/kg
Mixed-layer CIN: -303 J/kg
Mixed-layer LCL: 1275 m above ground
0-6 km bulk shear: 21 kt
0-1 km storm-relative helicity: 168 m²/s²
0-3 km storm-relative helicity: 307 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 10.8

Open this sounding in Storm Lab

The text

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

498 
WGUS53 KIWX 011416
FFWIWX
INC091-MIC021-011715-
/O.NEW.KIWX.FF.W.0019.110701T1416Z-110701T1715Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE NORTHERN INDIANA
916 AM CDT FRI JUL 1 2011

THE NATIONAL WEATHER SERVICE IN NORTHERN INDIANA HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  NORTHWESTERN LA PORTE COUNTY IN NORTHWEST INDIANA
  EXTREME SOUTHWESTERN BERRIEN COUNTY IN SOUTHWEST MICHIGAN

* UNTIL 1215 PM CDT/115 PM EDT/

* AT 908 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED   
  VERY HEAVY RAIN FROM NUMEROUS THUNDERSTORMS OVER THE WARNED AREA.  
  TRAINED SPOTTERS AND RADAR ESTIMATES INDICATE THAT LOCALIZED       
  AMOUNTS OF 2 TO 3 INCHES HAVE ALREADY FALLEN...WITH ADDITIONAL     
  RAINFALL AMOUNTS BETWEEN 1 AND 3 INCHES POSSIBLE IN THE NEXT TWO 
  TO THREE HOURS. 

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO NEW
  BUFFALO...MICHIANA...GRAND BEACH...WATERFORD...SPRINGVILLE...TRAIL
  CREEK...POTTAWATTOMIE PARK...MICHIGAN CITY...MICHIANA SHORES AND
  LONG BEACH

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. VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED QUICKLY. 
MOVE TO HIGHER GROUND.

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

&&

LAT...LON 4175 8689 4176 8684 4180 8680 4183 8673
      4143 8675 4141 8694 4172 8695

$$

MCS

2 follow-up statements

674 
WGUS53 KIWX 011714
FFWIWX
INC091-MIC021-012015-
/O.EXT.KIWX.FF.W.0019.000000T0000Z-110701T2015Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE NORTHERN INDIANA
1214 PM CDT FRI JUL 1 2011

THE NATIONAL WEATHER SERVICE IN NORTHERN INDIANA HAS EXTENDED THE

* FLASH FLOOD WARNING FOR...
  WESTERN LA PORTE COUNTY IN NORTHWEST INDIANA
  EXTREME SOUTHWESTERN BERRIEN COUNTY IN SOUTHWEST MICHIGAN

* UNTIL 315 PM CDT/415 PM EDT/

* AT 1205 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR            
  INDICATED VERY HEAVY RAIN FROM WIDESPREAD SHOWERS AND              
  THUNDERSTORMS OVER THE WARNED AREA. RAINFALL TOTALS SINCE          
  THIS MORNING HAVE GENERALLY RANGED BETWEEN 3 AND 5                 
  INCHES...WITH REPORTS OF HIGH WATER ON AREA ROADS. LOCALIZED       
  ADDITIONAL RAINFALL AMOUNTS NEAR AN INCH WILL BE POSSIBLE OVER     
  THE NEXT SEVERAL HOURS. 

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO NEW
  BUFFALO...MICHIANA...GRAND BEACH...TRAIL CREEK...POTTAWATTOMIE
  PARK...MICHIGAN CITY...MICHIANA SHORES AND LONG BEACH

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. VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED QUICKLY.
MOVE TO HIGHER GROUND.

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

&&

LAT...LON 4175 8689 4176 8684 4180 8680 4183 8673
      4143 8675 4141 8694 4172 8695

$$

MCS

068 
WGUS73 KIWX 012019
FFSIWX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE NORTHERN INDIANA
319 PM CDT FRI JUL 1 2011

INC091-MIC021-012024-
/O.EXP.KIWX.FF.W.0019.000000T0000Z-110701T2015Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
LA PORTE IN-BERRIEN MI-
319 PM CDT FRI JUL 1 2011

...THE FLASH FLOOD WARNING WILL EXPIRE AT 315 PM CDT/415 PM EDT/ FOR
EXTREME SOUTHWESTERN BERRIEN AND WESTERN LA PORTE COUNTIES...

SHOWERS AND THUNDERSTORMS WILL CONTINUE TO DISSIPATE ACROSS THE 
WARNING AREA THROUGH THE REMAINDER OF THE AFTERNOON. THE THREAT FOR 
FLASH FLOODING HAS SUBSIDED. THEREFORE...THE FLASH FLOOD WARNING HAS 
BEEN ALLOWED TO EXPIRE. HOWEVER...WATER LEVELS MAY REMAIN ELEVATED 
IN DITCHES AND LOW LYING AREAS ALONG AND CREEKS AND STREAMS. MINOR 
FLOODING OF SOME AREA ROADWAYS WILL ALSO BE POSSIBLE THROUGH THE 
REMAINDER OF THE AFTERNOON HOURS. MOTORISTS SHOULD EXERCISE CAUTION 
WHEN TRAVELLING ACROSS ESPECIALLY THE NORTHWESTERN PORTIONS OF LA 
PORTE COUNTY INDIANA AND THE SOUTHWEST PORTIONS OF BERRIEN COUNTY 
MICHIGAN.

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

LAT...LON 4175 8689 4176 8684 4180 8680 4183 8673
      4143 8675 4141 8694 4172 8695

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 30, 8:19 PM EDT	Flash Flood Watch	IWX	Cass	21 hr
Jul 1, 7:27 AM EDT	Special Weather Statement	IWX	Berrien	33 min
Jul 1, 8:31 AM EDT	Special Weather Statement	IWX	Cass	29 min
Jul 1, 2:50 PM EDT	Special Weather Statement	IWX	Van Buren	25 min
Jul 1, 7:54 AM EDT	Special Marine Warning	IWX		46 min
Jul 1, 8:06 AM EDT	Special Weather Statement	IWX	LaPorte	24 min
Jul 1, 9:22 AM EDT	Special Weather Statement	IWX	LaPorte	23 min
Jul 1, 9:45 AM EDT	Special Weather Statement	IWX	LaPorte	30 min

Nearby

Flash Flood Warnings in Michigan, 2011 Flash Flood Warnings in Indiana, 2011 Every flash flood warning in 2011

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.