Alert archive / Illinois / Flash Flood Warnings in 2011
Flash Flood Warning 35, NWS Lincoln, IL
NWS Lincoln, IL issued this flash flood warning at Jun 17, 2011, 10:44 PM CDT for Morgan County, Sangamon 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
- Jun 17, 2011, 10:44 PM CDT (03:44 UTC)
- Expired
- Jun 18, 2011, 2:30 AM CDT
- In force
- 4 hr
- Issued by
- NWS Lincoln, IL
- Area
- Storm-based polygon
- Flood severity
- None
Counties Morgan County, IL, Sangamon County, IL
The radar
The Lincoln radar (KILX), 78 km from the middle of the area, began a volume at 03:44 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 |
|---|---|---|---|
| Jun 17, 10:50 PM CDT | FLASH FLOOD | 3 Ne Waverly, IL | TWO FEET OF WATER OVER WAVERLY/NEW BERLIN BLACKTOP |
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, 3.7 hours before the alert went out and 131 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
- 601 J/kg
- Mixed-layer CIN
- -46 J/kg
- Mixed-layer LCL
- 644 m above ground
- 0-6 km bulk shear
- 47 kt
- 0-1 km storm-relative helicity
- 41 m²/s²
- 0-3 km storm-relative helicity
- 27 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 0.9
The text
As transmitted, in the capitals the NWS used until 2016.
051
WGUS53 KILX 180344
FFWILX
ILC137-167-180730-
/O.NEW.KILX.FF.W.0035.110618T0344Z-110618T0730Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LINCOLN IL
1044 PM CDT FRI JUN 17 2011
THE NATIONAL WEATHER SERVICE IN LINCOLN HAS ISSUED A
* FLASH FLOOD WARNING FOR...
SOUTHEASTERN MORGAN COUNTY IN WEST CENTRAL ILLINOIS...
SOUTHWESTERN SANGAMON COUNTY IN CENTRAL ILLINOIS...
* UNTIL 230 AM CDT
* AT 1044 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
SLOW MOVING THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS THE
WARNED AREA. RAINFALL ESTIMATES SHOW AROUND 2 INCHES OF RAIN HAS
FALLEN SINCE 945 PM.
* RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
JACKSONVILLE...ALEXANDER...FRANKLIN AND WAVERLY.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
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.
&&
LAT...LON 3978 9003 3965 8988 3954 8977 3953 9001
3972 9029
$$1 follow-up statement
321
WGUS73 KILX 180622
FFSILX
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LINCOLN IL
122 AM CDT SAT JUN 18 2011
ILC137-167-180730-
/O.CON.KILX.FF.W.0035.000000T0000Z-110618T0730Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MORGAN IL-SANGAMON IL-
122 AM CDT SAT JUN 18 2011
...FLASH FLOOD WARNING REMAINS IN EFFECT FOR SOUTHWESTERN SANGAMON
AND SOUTHEASTERN MORGAN COUNTIES UNTIL 230 AM CDT...
AT 120 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS THE WARNED AREA. RADAR
INDICATES THAT MORE THAN 4 INCHES OF RAIN HAS FALLEN OVER EASTERN
MORGAN AND WESTERN SANGAMON COUNTIES. THUNDERSTORMS WITH HEAVY RAIN
WILL CONTINUE OVER THE AREA FOR THE NEXT FEW HOURS.
RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLASH FLOODING
INCLUDE...JACKSONVILLE...ALEXANDER...FRANKLIN AND WAVERLY.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING. IF FLOODING IS OBSERVED...ACT QUICKLY. DO NOT
ENTER THE WATER. TURN AROUND AND MOVE UP TO HIGHER GROUND. DO NOT
STAY IN AREAS SUBJECT TO FLOODING WHEN WATER BEGINS RISING.
&&
LAT...LON 3978 9003 3965 8988 3954 8977 3953 9001
3972 9029
$$
CHURCHILLThe office that day
Everything else NWS Lincoln, IL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 17, 9:33 PM CDT | Special Weather Statement | ILX | Morgan, Sangamon | 57 min |
| Jun 17, 10:01 PM CDT | Severe Thunderstorm Warning | ILX | Morgan, Sangamon | 44 min |
| Jun 17, 11:40 PM CDT | Severe Thunderstorm Warning | ILX | Sangamon | 55 min |
| Jun 18, 12:26 AM CDT | Severe Thunderstorm Warning | ILX | Sangamon | 37 min |
| Jun 18, 12:49 AM CDT | Flash Flood Warning | ILX | Sangamon | 4 hr |
| Jun 18, 1:42 AM CDT | Flash Flood Warning | ILX | Cass, Morgan | 3 hr |
| Jun 18, 2:27 AM CDT | Severe Thunderstorm Warning | ILX | Effingham, Jasper | 37 min |
| Jun 18, 2:32 AM CDT | Flash Flood Warning | ILX | Morgan, Sangamon | 20 hr |
| Jun 18, 2:46 AM CDT | Flash Flood Warning | ILX | Clay, Crawford, Cumberland, Effingham, Jasper, Lawrence and 2 more | 12 hr |
| Jun 18, 6:49 AM CDT | Special Weather Statement | ILX | Morgan | 56 min |
| Jun 18, 8:51 AM CDT | River Flood Warning | ILX | Clay, Richland | 16 days |
| Jun 18, 2:16 PM CDT | Flash Flood Watch | ILX | Christian, Clay, Effingham, Jasper, Lawrence, Morgan and 4 more | 17 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.