Alert archive / Illinois / River Flood Warnings in 2011

River Flood Warning 45, NWS Chicago, IL

May 25, 2011Bureau County, LaSalle County, Illinois

NWS Chicago, IL issued this river flood warning at May 25, 2011, 10:14 PM CDT for Bureau County, LaSalle County, Illinois. It took effect at May 26, 2011, 11:20 AM CDT. It was in force for 13 days.

The area

The counties it named.

The facts

Issued: May 25, 2011, 10:14 PM CDT (03:14 UTC)
In effect from: May 26, 2011, 11:20 AM CDT
Expired: Jun 8, 2011, 10:04 AM CDT
In force: 13 days
Issued by: NWS Chicago, IL
Flood severity: Minor

Counties Bureau County, IL, LaSalle County, IL

The radar

The Chicago radar (KLOT), 97 km from the middle of the area, began a volume at 03:17 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 river

Written for the forecast point Illinois River near La Salle (LSLI2).

Action stage: 19 ft
Minor stage: 20 ft
Moderate stage: 27 ft
Major stage: 31 ft

This gauge today: stage, forecast and historic crests

Stage from the USGS instantaneous record for site 411925089063901, one reading an hour, from a day before the product to a day after it ended. Flood stages are today's.

What forecasters said that day

The local office's own words before this river flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Chicago, IL wrote its last area forecast discussion before this river flood warning went out at May 25, 9:18 PM CDT, 56 minutes earlier.

Area forecast discussion, May 25, 9:18 PM CDT, 56 minutes before

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Hazardous weather outlook, May 25, 4:05 PM CDT, 6 hours 9 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
405 PM CDT WED MAY 25 2011

ILZ003>006-008-010>014-019>023-032-033-039-INZ001-002-010-011-019-
262115-
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-
405 PM CDT WED MAY 25 2011 /505 PM EDT WED MAY 25 2011/

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTH CENTRAL ILLINOIS...
NORTHEAST ILLINOIS AND NORTHWEST INDIANA.

.DAY ONE...TONIGHT.

  WEATHER HAZARDS EXPECTED:

  THUNDERSTORMS...THE STRONGEST MAY PRODUCE:
    DAMAGING WINDS IN EXCESS OF 70 MPH.
    HAIL TO THE SIZE OF GOLF BALLS.
    TORNADOES.
    AND HEAVY RAINFALL WITH THE POTENTIAL FOR FLASH FLOODING.

  AREAS AFFECTED AND TIMING:

  THUNDERSTORMS...SOME POSSIBLY SEVERE...WILL MOVE BACK INTO THE
  OUTLOOK AREA THIS EVENING POTENTIALLY CONTINUING INTO THE
  OVERNIGHT HOURS. WHILE THERE WILL BE SOME THREAT OF SEVERE
  WEATHER ACROSS THE ENTIRE REGION...THE GREATEST THREAT OF
  SEVERE WEATHER APPEARS TO LIE SOUTH OF INTERSTATE 80.

  DISCUSSION:

  A STRONG LOW PRESSURE SYSTEM OVER MISSOURI WILL MOVE EASTWARD.
  CONTINUED SUNSHINE THIS AFTERNOON WILL INCREASE THE INSTABILITY.
  THIS SHOULD RESULT IN RAPID DESTABILIZATION OF THE ATMOSPHERE BY
 EARLY EVENING...PARTICULARLY SOUTH OF INTERSTATE 80.

  AS THE LOW PRESSURE MOVES EASTWARD INTO THIS UNSTABLE AIR MASS
  CONDITIONS WILL BE FAVORABLE FOR SEVERE THUNDERSTORMS TO MOVE
  BACK INTO NORTHERN ILLINOIS THIS EVENING. THE PRIMARY THREAT
  FROM THESE STORMS WILL LIKELY BE LARGE HAIL NORTH OF INTERSTATE
  80...WITH THE THREAT FOR DAMAGING WINDS AND EVEN TORNADOES
  INCREASING SOUTH OF INTERSTATE 80.

  IN ADDITION...SLOW MOVING STORMS AND LOCALLY HEAVY RAINFALL
  COULD RESULT IN FLASH FLOODING.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY.

THUNDERSTORMS WILL CONTINUE INTO THURSDAY AS THE SURFACE LOW
SLOWLY MOVES EAST INTO CENTRAL INDIANA. AREAS OF HEAVY RAINFALL
WILL CONTINUE DURING THIS TIME...WITH SOME POTENTIAL FOR
FLOODING.

THERE IS A CHANCE FOR THUNDERSTORMS OVER THE WEEKEND INTO
MEMORIAL DAY.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL LIKELY BE NEEDED THIS EVENING AND POSSIBLY
INTO THE OVERNIGHT HOURS.

&&

COMPLETE FORECAST INFORMATION IS AVAILABLE ON THE NWS CHICAGO
WEBPAGE: WEATHER.GOV/CHICAGO

LMZ740>745-262115-
WINTHROP HARBOR TO WILMETTE HARBOR-
WILMETTE HARBOR TO NORTHERLY ISLAND-
NORTHERLY ISLAND TO CALUMET HARBOR-CALUMET HARBOR TO GARY-
GARY TO BURNS HARBOR-BURNS HARBOR TO MICHIGAN CITY-
405 PM CDT WED MAY 25 2011

THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE ILLINOIS NEARSHORE
WATERS OF LAKE MICHIGAN AND THE INDIANA NEARSHORE WATERS OF LAKE
MICHIGAN.

.DAY ONE...TONIGHT.

STRONG WINDS AND HIGH WAVES WILL LEAD TO HAZARDOUS CONDITIONS FOR
THE ILLINOIS NEAR SHORE WATERS TONIGHT.

THUNDERSTORMS ARE LIKELY ACROSS THE AREA THIS AFTERNOON THROUGH
TONIGHT. LARGE HAIL AND DAMAGING WINDS ARE THE MAIN THREATS.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY.

STRONG WINDS AND HIGH WAVES WILL LEAD TO HAZARDOUS CONDITIONS FOR
THE ILLINOIS NEAR SHORE WATERS EARLY FRIDAY MORNING.

THUNDERSTORMS WILL CONTINUE INTO THURSDAY. THEN THERE IS A CHANCE
FOR THUNDERSTORMS OVER THE WEEKEND INTO MEMORIAL DAY.

&&

COMPLETE FORECAST INFORMATION IS AVAILABLE ON THE NWS CHICAGO
WEBPAGE: WEATHER.GOV/CHICAGO

LMZ080-261-362-364-366-563-565-567-669-671-673-675-777-779-868-
870-872-874-876-878-262115-
LAKE MICHIGAN FROM MICHIGAN CITY IN TO ST. JOSEPH MI 5 NM
OFFSHORE TO MID LAKE-
LAKE MICHIGAN FROM SEUL CHOIX POINT TO ROCK ISLAND PASSAGE 5 NM
OFFSHORE TO MID LAKE-
LAKE MICHIGAN SOUTH OF A LINE FROM SEUL CHOIX POINT TO THE
MACKINAC BRIDGE AND NORTH OF A LINE FROM CHARLEVOIX MI TO SOUTH
FOX ISLAND 5 NM OFFSHORE-
LAKE MICHIGAN FROM CHARLEVOIX TO POINT BETSIE MI 5 NM OFFSHORE TO
MID LAKE-
LAKE MICHIGAN FROM POINT BETSIE TO MANISTEE MI 5 NM OFFSHORE TO
MID LAKE-
LAKE MICHIGAN FROM ROCK ISLAND PASSAGE TO STURGEON BAY WI-
LAKE MICHIGAN FROM STURGEON BAY TO TWO RIVERS WI 5 NM OFFSHORE TO
MID LAKE-
LAKE MICHIGAN FROM TWO RIVERS TO SHEBOYGAN WI 5 NM OFFSHORE TO
MID LAKE-
LAKE MICHIGAN FROM SHEBOYGAN TO PORT WASHINGTON WI 5 NM OFFSHORE
TO MID LAKE-
LAKE MICHIGAN FROM PORT WASHINGTON TO NORTH POINT LIGHT WI 5 NM
OFFSHORE TO MID LAKE-
LAKE MICHIGAN FROM NORTH POINT LIGHT TO WIND POINT WI 5 NM
OFFSHORE TO MID LAKE-
LAKE MICHIGAN FROM WIND POINT WI TO WINTHROP HARBOR IL 5 NM
OFFSHORE TO MID LAKE-
LAKE MICHIGAN FROM WINTHROP HARBOR TO WILMETTE HARBOR IL 5 NM
OFFSHORE TO MID LAKE-
LAKE MICHIGAN FROM WILMETTE HARBOR IL TO MICHIGAN CITY IN 5 NM
OFFSHORE TO MID LAKE-
LAKE MICHIGAN FROM PENTWATER TO MANISTEE MI 5 NM OFFSHORE TO MID
LAKE-
LAKE MICHIGAN FROM WHITEHALL TO PENTWATER MI 5 NM OFFSHORE TO MID
LAKE-
LAKE MICHIGAN FROM GRAND HAVEN TO WHITEHALL MI 5 NM OFFSHORE TO
MID LAKE-
LAKE MICHIGAN FROM HOLLAND TO GRAND HAVEN MI 5 NM OFFSHORE TO MID
LAKE-
LAKE MICHIGAN FROM SOUTH HAVEN TO HOLLAND MI 5 NM OFFSHORE TO MID
LAKE-
LAKE MICHIGAN FROM ST. JOSEPH TO SOUTH HAVEN MI 5 NM OFFSHORE TO
MID LAKE-
405 PM CDT WED MAY 25 2011

THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE OPEN WATERS OF LAKE
MICHIGAN.

.DAY ONE...TONIGHT.

THUNDERSTORMS ARE LIKELY ACROSS THE SOUTHERN THIRD OF LAKE
MICHIGAN THIS AFTERNOON THROUGH TONIGHT. LARGE HAIL AND DAMAGING
WINDS ARE THE MAIN THREATS.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY.

THUNDERSTORMS WILL CONTINUE INTO THURSDAY. THEN THERE IS A CHANCE
FOR THUNDERSTORMS OVER THE WEEKEND INTO MEMORIAL DAY.

&&

COMPLETE FORECAST INFORMATION IS AVAILABLE ON THE NWS CHICAGO
WEBPAGE: WEATHER.GOV/CHICAGO

KJB

In the hours before

Local storm report, May 25, 7:02 PM CDT, 3 hours 12 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
702 PM CDT WED MAY 25 2011

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0701 PM     HAIL             13 W KANKAKEE           41.12N 88.11W
05/25/2011  M0.25 INCH       KANKAKEE           IL   TRAINED SPOTTER

            PEA TO DIME SIZE HAIL

&&

ACS

Local storm report, May 25, 7:44 PM CDT, 2 hours 30 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
744 PM CDT WED MAY 25 2011

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0740 PM     FLOOD            OGLESBY                 41.29N 89.06W
05/25/2011                   LA SALLE           IL   LAW ENFORCEMENT

            7-8 INCHES OF STANDING WATER ON ROADS NEAR COMMUNITY
            COLLEGE IN OGLESBY.

&&

ACS

Local storm report, May 25, 8:08 PM CDT, 2 hours 6 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
808 PM CDT WED MAY 25 2011

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0804 PM     HEAVY RAIN       9 WSW MENDOTA           41.50N 89.28W
05/25/2011  M3.84 INCH       BUREAU             IL   TRAINED SPOTTER

            TOTAL RAIN MEASURED

&&

ACS

Local storm report, May 25, 8:15 PM CDT, 1 hour 59 minutes before

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Local storm report, May 25, 9:19 PM CDT, 55 minutes before

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Local storm report, May 25, 9:45 PM CDT, 29 minutes before

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The office that day

Everything else NWS Chicago, IL issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 25, 7:01 PM CDT	Severe Thunderstorm Warning	LOT	Ford, Iroquois, Livingston	59 min
May 25, 7:06 PM CDT	Areal Flood Advisory	LOT	DeKalb, Ford, Grundy, Iroquois, Kankakee, Kendall and 5 more	6 hr
May 25, 7:37 PM CDT	Severe Thunderstorm Warning	LOT	Iroquois, Kankakee	53 min
May 25, 7:46 PM CDT	Flash Flood Warning	LOT	DeKalb, LaSalle, Lee	5 hr
May 25, 7:50 PM CDT	Severe Thunderstorm Warning	LOT	Iroquois	70 min
May 25, 8:09 PM CDT	Flash Flood Warning	LOT	Kankakee, Will	6 hr
May 25, 9:22 PM CDT	River Flood Advisory	LOT	Cook	13 hr
May 25, 10:21 PM CDT	River Flood Watch	LOT	LaSalle	7 hr
May 25, 10:26 PM CDT	River Flood Advisory	LOT	Grundy	15 hr
May 26, 4:56 AM CDT	River Flood Warning	LOT	LaSalle	4 days
May 26, 4:56 AM CDT	River Flood Warning	LOT	Iroquois	16 hr
May 26, 7:46 AM CDT	Gale Warning	LOT		13 hr
May 26, 7:46 AM CDT	Small Craft Advisory	LOT		31 hr
May 26, 8:54 AM CDT	River Flood Warning	LOT	Cook	21 hr
May 26, 10:25 AM CDT	River Flood Warning	LOT	Lake	23 hr
May 26, 10:25 AM CDT	River Flood Warning	LOT	Cook	23 hr
May 26, 10:25 AM CDT	River Flood Warning	LOT	LaSalle	11 hr
May 26, 10:25 AM CDT	River Flood Warning	LOT	Iroquois	11 hr
May 26, 10:25 AM CDT	River Flood Warning	LOT	LaSalle	31 hr
May 26, 10:51 AM CDT	River Flood Advisory	LOT	Cook	10 hr
May 26, 10:51 AM CDT	River Flood Advisory	LOT	Kane, Kendall	32 hr
May 26, 10:51 AM CDT	River Flood Advisory	LOT	Grundy	30 hr
May 26, 10:51 AM CDT	River Flood Advisory	LOT	Kankakee	44 hr
May 26, 10:51 AM CDT	River Flood Advisory	LOT	Grundy, Will	47 hr
May 26, 11:51 AM CDT	River Flood Warning	LOT	Grundy	33 hr
May 25, 10:14 PM CDT	River Flood Warning	LOT	Lake, Newton	27 days
May 25, 10:28 PM CDT	River Flood Advisory	LOT	Newton	8 days
May 26, 6:43 AM CDT	River Flood Warning	LOT	Lake	15 hr
May 26, 10:25 AM CDT	River Flood Warning	LOT	Porter	11 days
May 26, 10:25 AM CDT	River Flood Warning	LOT	Jasper, Porter	11 days
May 26, 10:25 AM CDT	River Flood Warning	LOT	Jasper	11 hr

Nearby

River Flood Warnings in Illinois, 2011 Every river 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; radar from the NEXRAD Level II archive; the gauge from the NWS water service and the USGS.