Alert archive / Illinois / Flash Flood Warnings in 2011
Flash Flood Warning 80, NWS St. Louis, MO
NWS St. Louis, MO issued this flash flood warning at Jul 29, 2011, 11:17 PM CDT for Marion County, Illinois. It was in force for 4 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
- Jul 29, 2011, 11:17 PM CDT (04:17 UTC)
- Expired
- Jul 30, 2011, 3:30 AM CDT
- In force
- 4 hr
- Issued by
- NWS St. Louis, MO
- Area
- Storm-based polygon
- Flood severity
- None
County Marion County, IL
The radar
The Evansville,IN radar (KVWX), 114 km from the middle of the area, began a volume at 04:18 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 30, 1:30 AM CDT | FLASH FLOOD | 1 E Kinmundy, IL | THE INTERSECTION OF KINLOU ROAD AND VANDEVEER ROAD HAS BEEN CLOSED DUE TO WATER OVER THE ROADWAY FROM THE RAINS EARLIER TONIGHT. |
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 00:00Z, 4.3 hours before the alert went out and 164 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
- 1826 J/kg
- Mixed-layer CIN
- -19 J/kg
- Mixed-layer LCL
- 816 m above ground
- 0-6 km bulk shear
- 23 kt
- 0-1 km storm-relative helicity
- 65 m²/s²
- 0-3 km storm-relative helicity
- 27 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 2.5
The text
As transmitted, in the capitals the NWS used until 2016.
540 WGUS53 KLSX 300417 FFWLSX ILC121-300830- /O.NEW.KLSX.FF.W.0080.110730T0417Z-110730T0830Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE ST LOUIS MO 1117 PM CDT FRI JUL 29 2011 THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A * FLASH FLOOD WARNING FOR... NORTHERN MARION COUNTY IN SOUTH CENTRAL ILLINOIS... * UNTIL 330 AM CDT * AT 1116 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED SLOW MOVING THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS THE WARNED AREA. DOPPLER RADAR ESTIMATED RAINFALL IN EXCESS OF 3 INCHES IN THE WARNED AREA. AN ADDITIONAL INCH OF RAINFALL IS POSSIBLE. * RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE... SALEM...KINMUNDY...OMEGA AND STEPHEN FORBES STATE PARK. ADDITIONALLY...INTERSTATE 57 IS EXPERIENCING THIS VERY HEAVY RAIN. DRIVERS IN INTERSTATE 57 ARE URGED TO USE EXTREME CAUTION. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING. IF YOU ARE IN THE WARNING AREA MOVE TO HIGHER GROUND IMMEDIATELY. 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. DO NOT ENTER THE WATER. TURN AROUND AND MOVE UP TO HIGHER GROUND TO ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS SUBJECT TO FLOODING WHEN WATER BEGINS RISING. 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 3861 8904 3882 8905 3883 8870 3860 8870 $$ BRITT
2 follow-up statements
880 WGUS73 KLSX 300653 FFSLSX FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 153 AM CDT SAT JUL 30 2011 ILC121-300830- /O.CON.KLSX.FF.W.0080.000000T0000Z-110730T0830Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ MARION IL- 153 AM CDT SAT JUL 30 2011 ...FLASH FLOOD WARNING REMAINS IN EFFECT FOR NORTHERN MARION COUNTY UNTIL 330 AM CDT... AT 151 AM CDT...EVEN THOUGH THE STORMS HAVE MOVED OUT OF THE AREA...LOCAL LAW ENFORCEMENT OFFICIALS REPORTED THAT FLASH FLOODING WAS OCCURRING JUST EAST OF KINMUNDY. THE INTERSECTION OF KINLOU ROAD AND VANDEVEER ROAD HAS BEEN CLOSED DUE TO WATER OVER THE ROADWAY. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...KINMUNDY... OMEGA...BRUBAKER AND STEPHEN FORBES STATE PARK. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FLASH FLOOD WARNING MEANS THAT FLASH FLOODING IS IMMINENT OR OCCURRING. IF YOU ARE IN THE WARNING AREA...MOVE TO HIGHER GROUND IMMEDIATELY. RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE PRECAUTIONS TO PROTECT LIFE AND PROPERTY. DO NOT ATTEMPT TO CROSS SWIFTLY FLOWING WATERS OR WATERS OF UNKNOWN DEPTH BY FOOT OR BY AUTOMOBILE. BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE DANGERS OF FLOODING. IF FLOODING IS OBSERVED...ACT QUICKLY. DO NOT ENTER THE WATER. TURN AROUND AND MOVE UP TO HIGHER GROUND. DO NOT STAY IN AREAS SUBJECT TO FLOODING WHEN WATER BEGINS RISING. MOST FLOOD RELATED DEATHS OCCUR IN VEHICLES. DO NOT ATTEMPT TO CROSS BRIDGES...DIPS...OR OTHER LOW SPOTS IF WATER COVERS THE ROADWAY. NEVER TRY TO CROSS A FLOWING STREAM...EVEN A SMALL ONE...ON FOOT OR IN A VEHICLE. && LAT...LON 3861 8904 3882 8905 3883 8870 3860 8870 $$ BYRD
414 WGUS73 KLSX 300829 FFSLSX FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 329 AM CDT SAT JUL 30 2011 ILC121-300842- /O.EXP.KLSX.FF.W.0080.000000T0000Z-110730T0830Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ MARION IL- 329 AM CDT SAT JUL 30 2011 ...THE FLASH FLOOD WARNING THAT WAS IN EFFECT FOR NORTHERN MARION COUNTY WILL BE ALLOWED TO EXPIRE AT 330 AM CDT... AT 325 AM CDT...MARION COUNTY SHERIFF/S OFFICE REPORTED THAT THE WATER HAS RECEDED AT THE INTERSECTION OF KINLOU ROAD AND VANDEVEER ROAD. HOWEVER...SOME DEBRIS REMAINS ON THE ROADWAY FROM WHEN IT WAS FLOODED. EXCESS RUNOFF FROM HEAVY RAIN HAS ENDED OVER THE WARNED AREA. STREAMS AND CREEKS IN THE WARNED AREA HAVE RECEDED OR WERE BEGINNING TO RECEDE...ENDING THE FLOOD THREAT. IF FLOODING HAS BEEN OBSERVED...PLEASE REPORT IT TO YOUR LOCAL LAW ENFORCEMENT AGENCY. LAT...LON 3861 8904 3882 8905 3883 8870 3860 8870 $$ BYRD
The office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 29, 7:08 PM CDT | Severe Thunderstorm Warning | LSX | Bond, Clinton | 30 min |
| Jul 29, 7:30 PM CDT | Areal Flood Advisory | LSX | Fayette | 6 hr |
| Jul 30, 10:54 AM CDT | River Flood Warning | LSX | Pike | 4 days |
| Jul 30, 10:54 AM CDT | River Flood Warning | LSX | Pike | 5 days |
| Jul 30, 10:54 AM CDT | River Flood Warning | LSX | Calhoun | 5 days |
Nearby
Flash Flood Warnings in Illinois, 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.