Alert archive / Illinois / Flash Flood Warnings in 2011
Flash Flood Warning 34, NWS St. Louis, MO
NWS St. Louis, MO issued this flash flood warning at Jun 2, 2011, 5:41 AM CDT for Adams County, Brown County, Pike County, Illinois; Marion County, Missouri. It was in force for 7 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
- Jun 2, 2011, 5:41 AM CDT (10:41 UTC)
- Expired
- Jun 2, 2011, 12:30 PM CDT
- In force
- 7 hr
- Issued by
- NWS St. Louis, MO
- Area
- Storm-based polygon
- Flood severity
- None
Counties Adams County, IL, Brown County, IL, Pike County, IL, Marion County, MO
The radar
The St Louis radar (KLSX), 135 km from the middle of the area, began a volume at 10:42 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 2, 6:00 AM CDT | FLOOD | 10 S Mount Sterling, IL | WATER OF UNKNOWN DEPTH REPORTED OVER BOTH HIGHWAY 107 AND HIGHWAY 99 NEAR THE BROWN AND PIKE COUNTY LINE |
| Jun 2, 7:09 AM CDT | HEAVY RAIN 1.8 | 2 E Versailles, IL | STILL RECEIVING MODERATE RAIN AT THE TIME OF MEASUREMENT |
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 00:00Z, 10.7 hours before the alert went out and 196 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
- 2568 m above ground
- 0-6 km bulk shear
- 41 kt
- 0-1 km storm-relative helicity
- 48 m²/s²
- 0-3 km storm-relative helicity
- 104 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
429
WGUS53 KLSX 021041
FFWLSX
ILC001-009-149-MOC127-021730-
/O.NEW.KLSX.FF.W.0034.110602T1041Z-110602T1730Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
541 AM CDT THU JUN 2 2011
THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A
* FLASH FLOOD WARNING FOR...
BROWN COUNTY IN WEST CENTRAL ILLINOIS...
NORTHERN PIKE COUNTY IN WEST CENTRAL ILLINOIS...
SOUTHERN ADAMS COUNTY IN WEST CENTRAL ILLINOIS...
SOUTHERN MARION COUNTY IN NORTHEAST MISSOURI...
* UNTIL 1230 PM CDT
* AT 534 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
THUNDERSTORMS WITH VERY HEAVY RAINFALL WERE MOVING SLOWLY EAST
ACROSS THE WARNED AREA. THE RADAR ESTIMATES THAT 1 TO 4 INCHES
OF RAIN HAS FALLEN OVERNIGHT...WITH THE HEAVIEST AMOUNTS OVER
SOUTHERN BROWN AND NORTHEASTERN PIKE COUNTIES IN ILLINOIS WHERE
LOCALLY HIGHER AMOUNTS MAY HAVE OCCURRED. ADDITIONAL STORMS
CONTINUE TO DEVELOP OVER NORTHEAST MISSOURI WHICH MAY BRING
ANOTHER 1 TO 3 INCHES OF RAINFALL THIS MORNING.
* RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
PALMYRA...PITTSFIELD...BARRY...BEVERLY...BUCKHORN...FALL
CREEK...GRIGGSVILLE...MOUNT STERLING...PAYSON...PHILADELPHIA AND
WARREN.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...COUNTRY ROADS...AS WELL AS FARMLAND ALONG THE
BANKS OF CREEKS AND STREAMS.
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.
TO REPORT FLOODING...HAVE THE NEAREST LAW ENFORCEMENT AGENCY RELAY
YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN ST
LOUIS.
&&
LAT...LON 4017 9092 3985 9092 3984 9183 3967 9184
3967 9172 3969 9171 3968 9131 3957 9058
3972 9064 3983 9056 3988 9058 3997 9050
3999 9052 3999 9060 4003 9060 4003 9065
4011 9070 4011 9090
$$
BRITT1 follow-up statement
337
WGUS73 KLSX 021320
FFSLSX
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
820 AM CDT THU JUN 2 2011
ILC001-009-149-MOC127-021730-
/O.CON.KLSX.FF.W.0034.000000T0000Z-110602T1730Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
PIKE IL-ADAMS IL-BROWN IL-MARION MO-
820 AM CDT THU JUN 2 2011
...FLASH FLOOD WARNING REMAINS IN EFFECT FOR BROWN...SOUTHERN ADAMS
AND NORTHERN PIKE COUNTIES IN WEST CENTRAL ILLINOIS...AND SOUTHERN
MARION COUNTY IN NORTHEAST MISSOURI UNTIL 1230 PM CDT...
AT 817 AM CDT...LOCAL LAW ENFORCEMENT OFFICIALS REPORTED
THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS THE WARNED AREA. RADAR
ESTIMATES OF 2 TO 5 INCHES OF RAIN HAS FALLEN ACROSS PORTIONS OF THE
WARNED AREA. THE HEAVIEST AMOUNTS OCCURRED OVER SOUTHERN BROWN AND
NORTHEASTERN PIKE COUNTIES WERE HIGHER AMOUNTS MAY HAVE OCCURRED.
RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
HANNIBAL...PALMYRA...PITTSFIELD...BARRY...BEVERLY...BUCKHORN...FALL
CREEK...GRIGGSVILLE...MOUNT STERLING...PAYSON...PHILADELPHIA AND
WARREN.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
EXCESSIVE RUNOFF FROM THIS STORM WILL CAUSE FLOODING OF SMALL CREEKS
AND STREAMS...COUNTRY ROADS...NORMALLY DRY WASHES... AS WELL AS
FARMLAND ALONG THE BANKS OF CREEKS AND STREAMS.
DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY.
REPORT FLOODING TO THE NEAREST LAW ENFORCEMENT AGENCY SO THAT THEY
MAY TAKE APPROPRIATE ACTION TO CLOSE FLOODED ROADWAYS. THEY WILL
RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE IN ST LOUIS.
&&
LAT...LON 4017 9092 3985 9092 3984 9183 3967 9184
3967 9172 3969 9171 3968 9131 3957 9058
3972 9064 3983 9056 3988 9058 3997 9050
3999 9052 3999 9060 4003 9060 4003 9065
4011 9070 4011 9090
$$
TILLYThe office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 2, 3:21 AM CDT | Flash Flood Warning | LSX | Adams | 8 hr |
| Jun 2, 10:33 AM CDT | Areal Flood Warning | LSX | Adams, Brown, Pike | 12 hr |
| Jun 2, 6:18 AM CDT | River Flood Warning | LSX | Lewis | 38 hr |
| Jun 2, 6:18 AM CDT | River Flood Warning | LSX | Lewis | 3 days |
| Jun 2, 10:15 AM CDT | River Flood Warning | LSX | Marion | 34 hr |
Nearby
Flash Flood Warnings in Illinois, 2011Flash Flood Warnings in Missouri, 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.