Alert archive / Indiana / Flash Flood Warnings in 2007
Flash Flood Warning 37, NWS Chicago, IL
NWS Chicago, IL issued this flash flood warning at Aug 22, 2007, 11:00 PM CDT for Lake 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 counties it named.
The facts
- Issued
- Aug 22, 2007, 11:00 PM CDT (04:00 UTC)
- Expired
- Aug 23, 2007, 3:00 AM CDT
- In force
- 4 hr
- Issued by
- NWS Chicago, IL
- Area
- Whole counties
County Lake County, IN
The radar
The Chicago radar (KLOT), 61 km from the middle of the area, began a volume at 04:02 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, 4.0 hours before the alert went out and 179 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
- 1568 J/kg
- Mixed-layer CIN
- -7 J/kg
- Mixed-layer LCL
- 1750 m above ground
- 0-6 km bulk shear
- 30 kt
- 0-1 km storm-relative helicity
- 91 m²/s²
- 0-3 km storm-relative helicity
- 195 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 6.6
The text
As transmitted, in the capitals the NWS used until 2016.
000 WGUS53 KLOT 230404 FFWLOT INC089-230800- BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL 1100 PM CDT WED AUG 22 2007 THE NATIONAL WEATHER SERVICE IN CHICAGO HAS ISSUED A * FLASH FLOOD WARNING FOR... LAKE COUNTY IN NORTHWEST INDIANA... * UNTIL 300 AM CDT... * AT 1057 PM CDT...NATIONAL WEATHER SERVICE RADAR INDICATED RAINFALL RATES OF 1 TO 2 INCHES PER HOUR ACROSS NORTHWEST LAKE COUNTY IN NORTHWEST INDIANA. THUNDERSTORMS ARE EXPECTED TO TRAIN OVER THE SAME LOCATIONS THROUGH 1 AM CDT. TOTAL RAINFALL AMOUNTS OF UP TO 3 INCHES ARE POSSIBLE BEFORE THE PRECIPITATION DIMINISHES AFTER 1 AM. A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING. 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. BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE DANGERS OF FLOODING. IF FLASH FLOODING IS OBSERVED ACT QUICKLY. MOVE UP TO HIGHER GROUND TO ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS SUBJECT TO FLOODING WHEN WATER BEGINS RISING. LAT...LON 4118 8753 4124 8724 4161 8725 4167 8753 $$ MARSILI
4 follow-up statements
000 WGUS73 KLOT 230529 FFSLOT FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL 1229 AM CDT THU AUG 23 2007 INC089-230800- LAKE IN- 1229 AM CDT THU AUG 23 2007 ...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 300 AM CDT FOR LAKE COUNTY... AT 1229 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE THUNDERSTORMS PRODUCING MODERATE TO HEAVY RAIN ACROSS PARTS OF LAKE COUNTY INDIANA. RADAR ESTIMATES BETWEEN 1 AND 2 INCHES OF RAIN HAS FALLEN ACROSS LAKE COUNTY. A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING. RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE PRECAUTIONS TO PROTECT LIFE AND PROPERTY. DO NOT ATTEMPT TO CROSS SWIFTLY FLOWING WATERS OR WATERS OF UNKNOWN DEPTH BY FOOT OR BY AUTOMOBILE. BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE DANGERS OF FLOODING. IF FLASH FLOODING IS OBSERVED ACT QUICKLY. MOVE UP TO HIGHER GROUND TO ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS SUBJECT TO FLOODING WHEN WATER BEGINS RISING. LAT...LON 4118 8753 4124 8724 4161 8725 4167 8753 $$
000 WGUS73 KLOT 230632 FFSLOT FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL 132 AM CDT THU AUG 23 2007 INC089-230800- LAKE IN- 132 AM CDT THU AUG 23 2007 ...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 300 AM CDT FOR LAKE COUNTY... AT 132 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE THUNDERSTORMS PRODUCING LIGHT TO MODERATE RAIN ACROSS LAKE COUNTY INDIANA. RADAR ESTIMATES BETWEEN 1 AND 2 INCHES OF RAIN HAS FALLEN ACROSS LAKE COUNTY. LIGHT TO MODERATE RAIN WILL CONTINUE THROUGH 230 AM THIS MORNING WITH UP TO AN ADDITIONAL HALF INCH OF RAIN POSSIBLE. THE RAIN WILL END BY 3 AM. HOWEVER...NEW SHOWERS AND THUNDERSTORMS DEVELOPING ACROSS WESTERN ILLINOIS MAY AFFECT LAKE COUNTY LATER THIS MORNING TOWARD SUNRISE. A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING. 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. BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE DANGERS OF FLOODING. IF FLASH FLOODING IS OBSERVED ACT QUICKLY. MOVE UP TO HIGHER GROUND TO ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS SUBJECT TO FLOODING WHEN WATER BEGINS RISING. LAT...LON 4118 8753 4124 8724 4161 8725 4167 8753 $$
000 WGUS73 KLOT 230807 FFSLOT FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL 305 AM CDT THU AUG 23 2007 INC089-230800- LAKE IN- 305 AM CDT THU AUG 23 2007 ...A FLASH FLOOD WARNING FOR LAKE COUNTY WILL BE ALLOWED TO EXPIRE... THE THUNDERSTORMS EARLIER THIS EVENING HAVE MOVE EAST. THE WATER HAS RECEDED IN MAY AREAS. THIS WARNING WILL BE ALLOWED TO EXPIRE. BE ALERT THIS MORNING FOR FLOODING MORE THUNDERSTORMS ARE MOVING INTO THE AREA AND ANOTHER FLASH FLOOD WARNING MAY BE NEEDED. BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE DANGERS OF FLOODING. IF FLASH FLOODING IS OBSERVED ACT QUICKLY. MOVE UP TO HIGHER GROUND TO ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS SUBJECT TO FLOODING WHEN WATER BEGINS RISING. LAT...LON 4118 8753 4124 8724 4161 8725 4167 8753 $$
000 WGUS73 KLOT 230807 RRA FFSLOT FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL 305 AM CDT THU AUG 23 2007 INC089-230815- LAKE IN- 305 AM CDT THU AUG 23 2007 ...A FLASH FLOOD WARNING FOR LAKE COUNTY WILL BE ALLOWED TO EXPIRE... THE THUNDERSTORMS EARLIER THIS EVENING HAVE MOVE EAST. THE WATER HAS RECEDED IN MAY AREAS. THIS WARNING WILL BE ALLOWED TO EXPIRE. BE ALERT THIS MORNING FOR FLOODING MORE THUNDERSTORMS ARE MOVING INTO THE AREA AND ANOTHER FLASH FLOOD WARNING MAY BE NEEDED. BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE DANGERS OF FLOODING. IF FLASH FLOODING IS OBSERVED ACT QUICKLY. MOVE UP TO HIGHER GROUND TO ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS SUBJECT TO FLOODING WHEN WATER BEGINS RISING. LAT...LON 4118 8753 4124 8724 4161 8725 4167 8753 $$
What forecasters said that day
The local office's own words before this flash flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
Hazardous weather outlook, Aug 22, 4:30 PM CDT, 6 hours 30 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL 430 PM CDT WED AUG 22 2007 ILZ003>006-008-010>014-019>023-032-033-039-INZ001-002-010-011-019- 230945- WINNEBAGO-BOONE-MCHENRY-LAKE ILLINOIS-OGLE-LEE-DE KALB-KANE- DUPAGE-COOK-LA SALLE-KENDALL-GRUNDY-WILL-KANKAKEE-LIVINGSTON- IROQUOIS-FORD-LAKE INDIANA-PORTER-NEWTON-JASPER-BENTON- 430 PM CDT WED AUG 22 2007 THIS PORTION OF THE HAZARDOUS WEATHER OUTLOOK IS FOR NORTH CENTRAL AND NORTHEAST ILLINOIS...AND NORTHWEST INDIANA. .DAY ONE...TONIGHT. SCATTERED THUNDERSTORMS ARE EXPECTED TO DEVELOP THIS EVENING...WITH THE GREATEST COVERAGE OF THESE THUNDERSTORMS EXPECTED CLOSER TO THE ILLINOIS WISCONSIN STATELINE. THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS...MAINLY THIS EVENING...GENERALLY NORTH OF A LINE DIXON TO DEKALB TO WAUKEGAN. THE MAIN THREAT WILL BE DAMAGING WINDS. THERE IS A POTENTIAL FOR HEAVY RAINFALL TONIGHT...ESPECIALLY CLOSER TO THE ILLINOIS WISCONSIN STATELINE. GIVEN SATURATED SOIL CONDITIONS FROM THE RECENT HEAVY RAINS...ADDITIONAL HEAVY RAINFALL TONIGHT MAY LEAD TO FLOODING PROBLEMS. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY. THERE IS A GOOD CHANCE OF PERIODIC THUNDERSTORMS THURSDAY THROUGH FRIDAY NIGHT. HEAVY RAINFALL WILL BE POSSIBLE DURING THIS PERIOD. THERE IS THE POTENTIAL THAT STRONGER STORMS COULD PRODUCE DAMAGING WINDS OR LARGE HAIL. THERE IS ALSO THE POTENTIAL FOR ADDITIONAL SIGNIFICANT RAINFALL. GIVEN THE ALREADY SATURATED SOIL CONDITIONS FROM RECENT HEAVY RAINFALL...ANY AREAS THAT EXPERIENCE MULTIPLE ROUNDS OF HEAVY RAINFALL COULD EXPERIENCE SIGNIFICANT FLOODING. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NECESSARY THIS EVENING ACROSS FAR NORTHERN ILLINOIS. IN ADDITION...ANY REPORTS OF RAINFALL AMOUNTS OR FLOODING WILL BE APPRECIATED TONIGHT THROUGH FRIDAY. && COMPLETE FORECAST INFORMATION IS AVAILABLE ON THE NWS CHICAGO WEBPAGE: WEATHER.GOV/CHICAGO LMZ740>745-766-230945- WINTHROP HARBOR TO WILMETTE HARBOR IL- WILMETTE HARBOR TO NORTHERLY ISLAND IL- NORTHERLY ISLAND TO CALUMET HARBOR IL- CALUMET HARBOR IL TO GARY IN- GARY INDIANA TO BURNS HARBOR- BURNS HARBOR TO MICHIGAN CITY- LAKE MICHIGAN IL AND IN OPEN WATERS- 430 PM CDT WED AUG 22 2007 THIS PORTION OF THE HAZARDOUS WEATHER OUTLOOK IS FOR THE ILLINOIS AND INDIANA WATERS OF LAKE MICHIGAN. .DAY ONE...TONIGHT. THERE IS A CHANCE OF THUNDERSTORMS TONIGHT. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY. ONE OR MORE PERIODS OF THUNDERSTORMS CAN BE EXPECTED FROM THURSDAY THROUGH FRIDAY NIGHT...WITH THE POTENTIAL FOR THE STRONGER STORMS TO PRODUCE STRONG WIND GUSTS. && COMPLETE FORECAST INFORMATION IS AVAILABLE ON THE NWS CHICAGO WEBPAGE: WEATHER.GOV/CHICAGO
In the hours before
Local storm report, Aug 22, 10:00 PM CDT, 1 hour before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
1000 PM CDT WED AUG 22 2007
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0925 PM TSTM WND DMG SHERIDAN 41.53N 88.69W
08/22/2007 LA SALLE IL EMERGENCY MNGR
ONE TREE BLOWN DOWN. ESTIMATE WINDS 60 MPH.
&&Local storm report, Aug 22, 10:06 PM CDT, 54 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
1006 PM CDT WED AUG 22 2007
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0957 PM TSTM WND DMG MORRIS 41.37N 88.43W
08/22/2007 GRUNDY IL PUBLIC
POWER LINES BLOWN DOWN AT ROUTE 47 AND LISBEN.
1003 PM HAIL NEW LENOX 41.52N 87.98W
08/22/2007 E0.25 INCH WILL IL TRAINED SPOTTER
1003 PM TSTM WND GST NEW LENOX 41.52N 87.98W
08/22/2007 E40.00 MPH WILL IL TRAINED SPOTTER
&&Local storm report, Aug 22, 10:29 PM CDT, 31 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
1029 PM CDT WED AUG 22 2007
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1010 PM TSTM WND GST ROMEOVILLE 41.65N 88.09W
08/22/2007 M40.00 MPH WILL IL OFFICIAL NWS OBS
1021 PM HAIL MATTESON 41.51N 87.74W
08/22/2007 M0.25 INCH COOK IL AMATEUR RADIO
1024 PM HAIL WOODRIDGE 41.74N 88.04W
08/22/2007 M0.50 INCH DUPAGE IL AMATEUR RADIO
MARBLE SIZE HAIL AT I-55 AND LEMONT ROAD.
&&Local storm report, Aug 22, 10:34 PM CDT, 26 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
1034 PM CDT WED AUG 22 2007
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0800 PM TSTM WND DMG POLO 41.98N 89.58W
08/22/2007 OGLE IL CO-OP OBSERVER
EIGHT INCH DIAMETER TREE LIMBS BLOWN DOWN.
&&Local storm report, Aug 22, 10:39 PM CDT, 21 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
1039 PM CDT WED AUG 22 2007
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1033 PM TSTM WND DMG MOKENA 41.53N 87.88W
08/22/2007 WILL IL LAW ENFORCEMENT
ONE TREE BLOWN DOWN AT ROUTE 30 AND WOLF ROAD.
&&Local storm report, Aug 22, 10:44 PM CDT, 16 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
1044 PM CDT WED AUG 22 2007
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1030 PM FLOOD ROMEOVILLE 41.65N 88.09W
08/22/2007 WILL IL AMATEUR RADIO
SIX TO EIGHT INCHES OF STANDING WATER ON ALEXANDER JUST
NORTH OF ROUTE 53.
1030 PM TSTM WND GST MONEE 41.42N 87.75W
08/22/2007 E40.00 MPH WILL IL AMATEUR RADIO
1040 PM TSTM WND DMG BRIDGEVIEW 41.74N 87.81W
08/22/2007 COOK IL AMATEUR RADIO
POWER LINES DOWN AT ROUTE 83 AND RICHLAND.
&&The office that day
Everything else NWS Chicago, IL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 22, 11:38 PM CDT | Tornado Warning | LOT | Jasper, Lake, Porter | 35 min |
| Aug 23, 12:57 PM CDT | Flash Flood Watch | LOT | Benton, Jasper, Lake, Newton, Porter | 40 hr |
| Aug 23, 3:25 PM CDT | Severe Thunderstorm Warning | LOT | Lake, Porter | 53 min |
Nearby
Flash Flood Warnings in Indiana, 2007Every flash flood warning in 2007
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.