Alert archive / Illinois / Flash Flood Warnings in 2011
Flash Flood Warning 45, NWS Lincoln, IL
NWS Lincoln, IL issued this flash flood warning at Jun 20, 2011, 9:29 AM CDT for Scott County, Illinois. It was in force for 24 hr. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Jun 20, 2011, 9:29 AM CDT (14:29 UTC)
- Expired
- Jun 21, 2011, 9:30 AM CDT
- In force
- 24 hr
- Issued by
- NWS Lincoln, IL
- Area
- Storm-based polygon
- Flood severity
- Moderate
County Scott County, IL
The radar
The St Louis radar (KLSX), 110 km from the middle of the area, began a volume at 14:31 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 12:00Z, 2.5 hours before the alert went out and 180 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
- 374 J/kg
- Mixed-layer CIN
- -264 J/kg
- Mixed-layer LCL
- 1083 m above ground
- 0-6 km bulk shear
- 50 kt
- 0-1 km storm-relative helicity
- -52 m²/s²
- 0-3 km storm-relative helicity
- 79 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 4.2
The text
As transmitted, in the capitals the NWS used until 2016.
697
WGUS53 KILX 201429
FFWILX
ILC171-210230-
/O.NEW.KILX.FF.W.0045.110620T1429Z-110621T0230Z/
/00000.2.DM.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LINCOLN IL
929 AM CDT MON JUN 20 2011
THE NATIONAL WEATHER SERVICE IN LINCOLN HAS ISSUED A
* FLASH FLOOD WARNING FOR A LEVEE FAILURE IN...
WEST CENTRAL SCOTT COUNTY IN WEST CENTRAL ILLINOIS...
* UNTIL 930 PM CDT MONDAY.
* AT 926 AM CDT...SCOTT COUNTY LAW ENFORCEMENT REPORTED THAT
FLOODING CONTINUED...IN RESPONSE TO THE LEVEE BREAK ON THE
MAUVAISE TERRE CREEK THAT OCCURRED SUNDAY MORNING. SEVERAL
ROADS IN THE AREA CONTINUE TO BE UNDER WATER...INCLUDING
ILLINOIS ROUTE 100 NORTH OF INTERSTATE 72.
* FLASH FLOODING IS EXPECTED TO CONTINUE OVER MAINLY RURAL AREAS
OF WEST CENTRAL SCOTT COUNTY...INCLUDING THE OXVILLE AREA.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY. MOVE TO HIGHER GROUND.
&&
LAT...LON 3972 9064 3972 9056 3965 9056 3965 9062
3966 9063 3968 9064 3970 9065
$$
GEELHART2 follow-up statements
972
WGUS53 KILX 210232
FFWILX
ILC171-211430-
/O.EXT.KILX.FF.W.0045.000000T0000Z-110621T1430Z/
/00000.2.DM.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LINCOLN IL
932 PM CDT MON JUN 20 2011
THE NATIONAL WEATHER SERVICE IN LINCOLN HAS EXTENDED THE
* FLASH FLOOD WARNING FOR A LEVEE FAILURE IN...
WEST CENTRAL SCOTT COUNTY IN WEST CENTRAL ILLINOIS...
* UNTIL 930 AM CDT TUESDAY.
* AT 928 PM CDT...SCOTT COUNTY LAW ENFORCEMENT REPORTED THAT
FLOODING CONTINUED...IN RESPONSE TO THE LEVEE BREAK ON THE
MAUVAISE TERRE CREEK THAT OCCURRED SUNDAY MORNING. SEVERAL ROADS
IN THE AREA CONTINUE TO BE UNDER WATER AND CLOSED...INCLUDING
ILLINOIS ROUTE 100...NORTH OF INTERSTATE 72.
* LOCATIONS IMPACTED INCLUDE...MAINLY RURAL AREAS OF WEST CENTRAL
SCOTT COUNTY...INCLUDING THE OXVILLE AREA.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY. MOVE TO HIGHER GROUND.
&&
LAT...LON 3972 9064 3972 9056 3965 9056 3965 9062
3966 9063 3968 9064 3970 9065
$$
SHIMON694
WGUS73 KILX 211428
FFSILX
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LINCOLN IL
928 AM CDT TUE JUN 21 2011
ILC171-211441-
/O.EXP.KILX.FF.W.0045.000000T0000Z-110621T1430Z/
/00000.2.DM.000000T0000Z.000000T0000Z.000000T0000Z.OO/
SCOTT-
928 AM CDT TUE JUN 21 2011
...THE FLASH FLOOD WARNING THAT WAS IN EFFECT FOR WEST CENTRAL SCOTT
COUNTY WILL BE ALLOWED TO EXPIRE AT 930 AM CDT...
WHILE FLOODING CONTINUES...IT HAS BEGUN TO RECEDE SOMEWHAT.
HOWEVER...SEVERAL ROADS REMAIN CLOSED. BECAUSE OF THIS...THE FLASH
FLOOD WARNING HAS BEEN REPLACED BY AN AREAL FLOOD WARNING.
LAT...LON 3972 9064 3972 9056 3965 9056 3965 9062
3966 9063 3968 9064 3970 9065
$$
GEELHARTThe office that day
Everything else NWS Lincoln, IL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 19, 9:17 PM CDT | Flash Flood Warning | ILX | Scott | 12 hr |
| Jun 20, 4:07 AM CDT | Special Weather Statement | ILX | Fulton, Knox, Peoria, Stark | 53 min |
| Jun 20, 5:01 AM CDT | Special Weather Statement | ILX | McLean, Marshall, Tazewell, Woodford | 59 min |
| Jun 20, 6:11 AM CDT | Special Weather Statement | ILX | Ford | 64 min |
| Jun 20, 6:32 AM CDT | Areal Flood Warning | ILX | Morgan | 11 hr |
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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.