Alert archive / Indiana / Flash Flood Warnings in 2011
Flash Flood Warning 13, NWS Chicago, IL
NWS Chicago, IL issued this flash flood warning at Jun 9, 2011, 9:21 AM CDT for Jasper County, Lake County, Porter County, Indiana. It was in force for 2 hr. 1 report 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
- Jun 9, 2011, 9:21 AM CDT (14:21 UTC)
- Expired
- Jun 9, 2011, 11:31 AM CDT
- In force
- 2 hr
- Issued by
- NWS Chicago, IL
- Area
- Storm-based polygon
- Flood severity
- None
Counties Jasper County, IN, Lake County, IN, Porter County, IN
The radar
The Chicago radar (KLOT), 76 km from the middle of the area, began a volume at 14:24 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 |
|---|---|---|---|
| Jun 9, 10:30 AM CDT | HEAVY RAIN 3.62 | 4 E Merrillville, IN | STORM TOTAL. |
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, 2.4 hours before the alert went out and 172 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.
- Mixed-layer CAPE
- 2009 J/kg
- Mixed-layer CIN
- -64 J/kg
- Mixed-layer LCL
- 1099 m above ground
- 0-6 km bulk shear
- 33 kt
- 0-1 km storm-relative helicity
- 55 m²/s²
- 0-3 km storm-relative helicity
- 78 m²/s²
- Significant tornado parameter
- 0.3
- Supercell composite
- 2.3
The text
As transmitted, in the capitals the NWS used until 2016.
960
WGUS53 KLOT 091421
FFWLOT
INC073-089-127-092030-
/O.NEW.KLOT.FF.W.0013.110609T1421Z-110609T2030Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
921 AM CDT THU JUN 9 2011
THE NATIONAL WEATHER SERVICE IN CHICAGO HAS ISSUED A
* FLASH FLOOD WARNING FOR URBAN AREAS AND SMALL STREAMS IN...
LAKE COUNTY IN NORTHWEST INDIANA...
NORTHWESTERN JASPER COUNTY IN NORTHWEST INDIANA...
SOUTHERN PORTER COUNTY IN NORTHWEST INDIANA...
* UNTIL 330 PM CDT THURSDAY
* AT 918 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS THE
WARNED AREA. RADAR RAINFALL ESTIMATES WERE BETWEEN 2 AND 4 INCHES
OVER THE AREA. ADDITIONAL THUNDERSTORMS...SOME WITH HEAVY
RAINFALL...WILL CONTINUE OVER THE NEXT HOUR.
* RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...BOONE
GROVE...CEDAR LAKE...CROWN POINT...GRIFFITH...HEBRON...HOBART...
LAKES OF THE FOUR SEASONS...LINCOLN HILLS...LOWELL...MALDEN...
MERRILLVILLE...SCHERERVILLE...ST. JOHN...VALPARAISO...WHEELER...
DYER...KOUTS AND LAKE DALECARLIA.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...URBAN AREAS...HIGHWAYS...STREETS AND UNDERPASSES
AS WELL AS OTHER DRAINAGE AREAS AND LOW LYING SPOTS.
FLOODING IS OCCURRING OR IS IMMINENT. MOST FLOOD RELATED DEATHS OCCUR
IN VEHICLES. DO NOT ATTEMPT TO CROSS WATER COVERED BRIDGES...DIPS...
OR LOW WATER CROSSINGS. NEVER TRY TO CROSS A FLOWING STREAM... EVEN A
SMALL ONE...ON FOOT OR IN A VEHICLE.
&&
LAT...LON 4121 8727 4122 8728 4120 8731 4118 8753
4154 8752 4154 8727 4147 8692 4124 8692
$$2 follow-up statements
740
WGUS73 KLOT 091548
FFSLOT
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
1048 AM CDT THU JUN 9 2011
INC073-089-127-092030-
/O.CON.KLOT.FF.W.0013.000000T0000Z-110609T2030Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
PORTER IN-JASPER IN-LAKE IN-
1048 AM CDT THU JUN 9 2011
...FLASH FLOOD WARNING REMAINS IN EFFECT FOR LAKE...NORTHWESTERN
JASPER AND SOUTHERN PORTER COUNTIES UNTIL 330 PM CDT...
AT 1045 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
THAT THE STRONG THUNDERSTORMS HAD MOVED OUT OF THE AREA WITH MOSTLY
LIGHT TO MODERATE RAIN REMAINING. HOWEVER...RAPID RISES CONTINUE ON
THE LITTLE CALUMET RIVER...HART DITCH...AND OTHER STREAMS IN THE
AREA.
RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...BOONE
GROVE...CEDAR LAKE...CROWN POINT...GRIFFITH...HEBRON...HOBART...LAKES
OF THE FOUR SEASONS...LINCOLN HILLS...LOWELL...MALDEN...
MERRILLVILLE...SCHERERVILLE...ST. JOHN...VALPARAISO...WHEELER...
DYER...KOUTS AND LAKE DALECARLIA.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
EXCESSIVE RUNOFF FROM THIS STORM WILL CAUSE ELEVATED LEVELS ON SMALL
CREEKS AND STREAMS...PONDING OF WATER ON ROADS...URBAN AREAS...
HIGHWAYS... UNDERPASSES AND LOW LYING AREAS.
MOST FLOOD RELATED DEATHS OCCUR IN VEHICLES. DO NOT ATTEMPT TO CROSS
BRIDGES...DIPS...OR OTHER LOW SPOTS IF WATER COVERS THE ROADWAY.
NEVER TRY TO CROSS A FLOWING STREAM...EVEN A SMALL ONE...ON FOOT OR
IN A VEHICLE.
&&
LAT...LON 4121 8727 4122 8728 4120 8731 4118 8753
4154 8752 4154 8727 4147 8692 4124 8692
$$
MORRIS038
WGUS73 KLOT 091631
FFSLOT
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
1131 AM CDT THU JUN 9 2011
INC073-089-127-091645-
/O.CAN.KLOT.FF.W.0013.000000T0000Z-110609T2030Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
PORTER IN-JASPER IN-LAKE IN-
1131 AM CDT THU JUN 9 2011
...THE FLASH FLOOD WARNING THAT WAS IN EFFECT FOR LAKE...NORTHWESTERN
JASPER AND SOUTHERN PORTER COUNTIES IS CANCELLED...
THE FLASH FLOOD WARNING HAS BEEN REPLACED WITH A NEW WARNING IN
EFFECT UNTIL 530 PM CDT.
IF FLOODING HAS BEEN OBSERVED...PLEASE REPORT IT TO YOUR LOCAL LAW
ENFORCEMENT AGENCY.
LAT...LON 4121 8727 4122 8728 4120 8731 4118 8753
4154 8752 4154 8727 4147 8692 4124 8692
$$The office that day
Everything else NWS Chicago, IL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 9, 3:13 AM CDT | Severe Thunderstorm Warning | LOT | Lake, Porter | 37 min |
| Jun 9, 6:40 AM CDT | Areal Flood Advisory | LOT | Lake | 5 hr |
| Jun 9, 9:56 AM CDT | Rip Current Statement | LOT | Lake, Porter | 18 hr |
| Jun 9, 10:28 AM CDT | River Flood Warning | LOT | Lake | 46 hr |
| Jun 9, 11:26 AM CDT | Flash Flood Warning | LOT | Jasper, Lake, Porter | 6 hr |
| Jun 9, 2:14 PM CDT | River Flood Advisory | LOT | Lake | 9 hr |
| Jun 9, 3:24 PM CDT | Flash Flood Watch | LOT | Lake, Porter | 17 hr |
| Jun 9, 5:52 PM CDT | Areal Flood Warning | LOT | Lake, Porter | 24 hr |
Nearby
Flash Flood Warnings in Indiana, 2011Every 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.