Alert archive / Illinois / Flash Flood Warnings in 2011
Flash Flood Warning 72, NWS St. Louis, MO
NWS St. Louis, MO issued this flash flood warning at Jul 7, 2011, 7:51 PM CDT for 6 counties in Illinois; Sainte Genevieve County, Missouri. It was in force for 6 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 7, 2011, 7:51 PM CDT (00:51 UTC)
- Expired
- Jul 8, 2011, 2:00 AM CDT
- In force
- 6 hr
- Issued by
- NWS St. Louis, MO
- Area
- Storm-based polygon
- Flood severity
- None
Counties Clinton County, IL, Madison County, IL, Monroe County, IL, Randolph County, IL, Saint Clair County, IL, Washington County, IL, Sainte Genevieve County, MO
The radar
The St Louis radar (KLSX), 111 km from the middle of the area, began a volume at 00:51 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 7, 9:30 PM CDT | HEAVY RAIN 3.78 | 1 E Belleville, IL | FELL BETWEEN 7 PM AND 930 PM. |
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, 0.9 hours before the alert went out and 257 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
- 143 J/kg
- Mixed-layer CIN
- -61 J/kg
- Mixed-layer LCL
- 1134 m above ground
- 0-6 km bulk shear
- 36 kt
- 0-1 km storm-relative helicity
- 2 m²/s²
- 0-3 km storm-relative helicity
- 50 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.7
The text
As transmitted, in the capitals the NWS used until 2016.
776
WGUS53 KLSX 080051
FFWLSX
ILC027-119-133-157-163-189-MOC186-080700-
/O.NEW.KLSX.FF.W.0072.110708T0051Z-110708T0700Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
751 PM CDT THU JUL 7 2011
THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A
* FLASH FLOOD WARNING FOR...
EASTERN STE. GENEVIEVE COUNTY IN SOUTHEAST MISSOURI...
RANDOLPH COUNTY IN SOUTHWEST ILLINOIS...
SOUTHEASTERN MADISON COUNTY IN SOUTHWEST ILLINOIS...
SOUTHEASTERN MONROE COUNTY IN SOUTHWEST ILLINOIS...
SOUTHERN CLINTON COUNTY IN SOUTH CENTRAL ILLINOIS...
ST. CLAIR COUNTY IN SOUTHWEST ILLINOIS...
WASHINGTON COUNTY IN SOUTH CENTRAL ILLINOIS...
* UNTIL 200 AM CDT FRIDAY
* AT 749 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
SLOW MOVING THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS THE
WARNED AREA. THESE STORMS WERE PRODUCING RAINFALL RATES OF 2 TO 3
INCHES IN ONE HOUR.
* RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
BELLEVILLE...BREESE...CARLYLE...CHESTER...FAIRVIEW HEIGHTS...
FREEBURG...LEBANON...MASCOUTAH...NASHVILLE...NEW BADEN...
O'FALLON...RED BUD...SCOTT AFB...SHILOH...SPARTA...STE.
GENEVIEVE...SWANSEA...ALBERS...AVISTON...BALDWIN...BECKEMEYER...
BREMEN...COFFMAN...COULTERVILLE...EVANSVILLE...GERMANTOWN...LIVELY
GROVE...MARISSA...NEW ATHENS AND NEW MEMPHIS.
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.
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.
&&
LAT...LON 3821 8928 3821 8959 3795 8959 3781 8967
3785 8979 3788 8980 3790 8985 3787 8990
3787 8994 3782 8999 3767 9011 3773 9022
3870 8999 3865 8922
$$
GKS1 follow-up statement
009
WGUS73 KLSX 080703
FFSLSX
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
203 AM CDT FRI JUL 8 2011
ILC027-119-133-157-163-189-MOC186-080718-
/O.EXP.KLSX.FF.W.0072.000000T0000Z-110708T0700Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MADISON IL-MONROE IL-RANDOLPH IL-ST. CLAIR IL-WASHINGTON IL-
CLINTON IL-STE. GENEVIEVE MO-
203 AM CDT FRI JUL 8 2011
...THE FLASH FLOOD WARNING THAT WAS IN EFFECT FOR EASTERN STE.
GENEVIEVE...SOUTHERN CLINTON...WASHINGTON...ST. CLAIR...RANDOLPH...
SOUTHEASTERN MONROE AND SOUTHEASTERN MADISON COUNTIES HAS BEEN
ALLOWED TO EXPIRE...
EXCESS RUNOFF FROM HEAVY RAIN HAS ENDED OVER THE WARNED AREA. STREAMS
AND CREEKS IN THE WARNED AREA HAVE RECEDED OR WERE BEGINNING TO
RECEDE...ENDING THE FLOOD THREAT. IF FLOODING HAS BEEN OBSERVED...
PLEASE REPORT IT TO YOUR LOCAL LAW ENFORCEMENT AGENCY.
LAT...LON 3821 8928 3821 8959 3795 8959 3781 8967
3785 8979 3788 8980 3790 8985 3787 8990
3787 8994 3782 8999 3767 9011 3773 9022
3870 8999 3865 8922
$$
BRITTThe office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 7, 7:07 PM CDT | Tornado Warning | LSX | Monroe, Randolph | 23 min |
| Jul 7, 7:14 PM CDT | Flash Flood Warning | LSX | Bond, Fayette, Macoupin, Madison, Montgomery | 6 hr |
| Jul 7, 7:48 PM CDT | Severe Thunderstorm Warning | LSX | Randolph | 42 min |
| Jul 7, 11:30 PM CDT | Areal Flood Warning | LSX | Fayette, Marion | 10 hr |
| Jul 8, 12:03 AM CDT | Areal Flood Warning | LSX | Monroe | 9 hr |
| Jul 8, 10:19 AM CDT | River Flood Warning | LSX | Fayette | 10 hr |
| Jul 8, 3:17 PM CDT | Heat Advisory | LSX | Adams, Bond, Brown, Calhoun, Clinton, Fayette and 11 more | 4 days |
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.