Alert archive / Illinois / Flash Flood Warnings in 2011
Flash Flood Warning 26, NWS Lincoln, IL
NWS Lincoln, IL issued this flash flood warning at May 29, 2011, 10:19 AM CDT for Knox County, Illinois. 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
- May 29, 2011, 10:19 AM CDT (15:19 UTC)
- Expired
- May 29, 2011, 4:30 PM CDT
- In force
- 6 hr
- Issued by
- NWS Lincoln, IL
- Area
- Storm-based polygon
- Flood severity
- None
County Knox County, IL
The radar
The Quad Cities radar (KDVN), 60 km from the middle of the area, began a volume at 15:19 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 |
|---|---|---|---|
| May 29, 11:00 AM CDT | FLASH FLOOD | 1 N Rio, IL | POLK CREEK IS OUT OF BANK AND IS NEARING SPILLING OVER ONTO US HWY 150. |
| May 29, 11:17 AM CDT | FLASH FLOOD | 1 Nne Rio, IL | LAND SLIDE BLOCKING ONE LANE OF TRAFFIC ALONG US HWY 150 JUST NORTH OF POLK CREEK. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Davenport, (KDVN), launched 12:00Z, 3.3 hours before the alert went out and 59 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 995 m above ground
- 0-6 km bulk shear
- 50 kt
- 0-1 km storm-relative helicity
- 41 m²/s²
- 0-3 km storm-relative helicity
- 291 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.4
The text
As transmitted, in the capitals the NWS used until 2016.
008 WGUS53 KILX 291519 FFWILX ILC095-292130- /O.NEW.KILX.FF.W.0026.110529T1519Z-110529T2130Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE LINCOLN IL 1019 AM CDT SUN MAY 29 2011 THE NATIONAL WEATHER SERVICE IN LINCOLN HAS ISSUED A * FLASH FLOOD WARNING FOR... NORTHWESTERN KNOX COUNTY IN WEST CENTRAL ILLINOIS... * UNTIL 430 PM CDT SUNDAY * AT 1017 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THUNDERSTORMS WITH VERY HEAVY RAINFALL APPROACHING THE WARNED AREA. RADAR INDICATES BETWEEN TWO AND THREE INCHES OF RAIN HAS ALREADY FALLEN THIS MORNING IN NORTHWEST KNOX COUNTY. * RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...RIO. THIS INCLUDES THE FOLLOWING STREAMS AND DRAINAGES... POPE CREEK...WALNUT CREEK...HENDERSON CREEK...MUD RUN...NORTH HENDERSON CREEK AND PENNINGTON CREEK. LAT...LON 4115 9011 4103 9042 4116 9043 $$ BARKER
2 follow-up statements
307 WGUS73 KILX 291640 FFSILX FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE LINCOLN IL 1140 AM CDT SUN MAY 29 2011 ILC095-292130- /O.CON.KILX.FF.W.0026.000000T0000Z-110529T2130Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ KNOX IL- 1140 AM CDT SUN MAY 29 2011 ...FLASH FLOOD WARNING REMAINS IN EFFECT FOR NORTHWESTERN KNOX COUNTY UNTIL 430 PM CDT... AT 1139 AM CDT...WEATHER SPOTTERS REPORTED THAT FLASH FLOODING WAS OCCURRING IN NORTHWEST KNOX COUNTY. U.S. 150 WAS CLOSED AT POPE CREEK DUE TO FLOODING. SOME LOCATIONS THAT WILL CONTINUE TO EXPERIENCE FLASH FLOODING INCLUDE...RIO. THIS INCLUDES THE FOLLOWING STREAMS AND DRAINAGES... POPE CREEK...WALNUT CREEK...HENDERSON CREEK...NORTH HENDERSON CREEK AND PENNINGTON CREEK. LAT...LON 4115 9011 4103 9042 4116 9043 $$ BARKER
723 WGUS73 KILX 292122 FFSILX FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE LINCOLN IL 422 PM CDT SUN MAY 29 2011 ILC095-292138- /O.EXP.KILX.FF.W.0026.000000T0000Z-110529T2130Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ KNOX IL- 422 PM CDT SUN MAY 29 2011 ...THE FLASH FLOOD WARNING THAT WAS IN EFFECT FOR NORTHWESTERN KNOX COUNTY WILL BE ALLOWED TO EXPIRE AT 430 PM CDT... 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 4115 9011 4103 9042 4116 9043 $$ BAK
The office that day
Everything else NWS Lincoln, IL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 29, 8:47 AM CDT | Severe Thunderstorm Warning | ILX | Knox | 28 min |
| May 29, 10:14 AM CDT | Severe Thunderstorm Warning | ILX | Knox, Stark | 61 min |
| May 29, 10:42 AM CDT | Severe Thunderstorm Warning | ILX | Fulton, Knox, Peoria, Stark, Tazewell | 33 min |
| May 29, 11:08 AM CDT | Severe Thunderstorm Warning | ILX | Fulton, Knox, Marshall, Peoria, Stark, Tazewell and 1 more | 52 min |
| May 29, 12:01 PM CDT | Special Weather Statement | ILX | Marshall, Tazewell, Woodford | 59 min |
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.