Alert archive / Illinois / Flash Flood Warnings in 2016
Flash Flood Warning 43, NWS St. Louis, MO
NWS St. Louis, MO issued this flash flood warning at Aug 15, 2016, 5:50 AM CDT for Madison County, Saint Clair County, Illinois. It was in force for 5 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
- Aug 15, 2016, 5:50 AM CDT (10:50 UTC)
- Expired
- Aug 15, 2016, 10:45 AM CDT
- In force
- 5 hr
- Issued by
- NWS St. Louis, MO
- Area
- Storm-based polygon
- Flood severity
- None
Counties Madison County, IL, Saint Clair County, IL
The radar
The St Louis radar (KLSX), 77 km from the middle of the area, began a volume at 10:50 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 |
|---|---|---|---|
| Aug 15, 6:40 AM CDT | HEAVY RAIN 3.18 | Freeburg, IL | RAINFALL TOTAL SO FAR. |
| Aug 15, 7:45 AM CDT | HEAVY RAIN 4.1 | Edwardsville, IL | RAINFALL SINCE MIDNIGHT. |
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, 10.8 hours before the alert went out and 189 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
- 1143 m above ground
- 0-6 km bulk shear
- 24 kt
- 0-1 km storm-relative helicity
- -25 m²/s²
- 0-3 km storm-relative helicity
- 24 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
822
WGUS53 KLSX 151050
FFWLSX
ILC119-163-151545-
/O.NEW.KLSX.FF.W.0043.160815T1050Z-160815T1545Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
550 AM CDT MON AUG 15 2016
THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A
* FLASH FLOOD WARNING FOR...
EASTERN ST. CLAIR COUNTY IN SOUTHWESTERN ILLINOIS...
MADISON COUNTY IN SOUTHWESTERN ILLINOIS...
* UNTIL 1045 AM CDT
* AT 550 AM CDT...DOPPLER RADAR INDICATED HEAVY RAIN ACROSS THE
WARNED AREA. UP TO THREE INCHES OF RAIN HAVE ALREADY FALLEN. FLASH
FLOODING IS EXPECTED TO BEGIN SHORTLY.
* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
BELLEVILLE...O'FALLON...COLLINSVILLE...EDWARDSVILLE...
FAIRVIEW HEIGHTS...SWANSEA...GLEN CARBON...SHILOH...WOOD RIVER...
HIGHLAND...TROY...BETHALTO...MARYVILLE...MASCOUTAH...STAUNTON...
LEBANON...FREEBURG...CASEYVILLE...NEW BADEN AND SCOTT AFB.
ADDITIONAL RAINFALL AMOUNTS OF ONE TO TWO INCHES ARE POSSIBLE IN THE
WARNED AREA.
THIS INCLUDES THE FOLLOWING HIGHWAYS...
INTERSTATE 70 IN ILLINOIS BETWEEN EXITS 21 AND 30.
INTERSTATE 55 IN ILLINOIS BETWEEN EXITS 23 AND 37.
INTERSTATE 64 IN ILLINOIS BETWEEN EXITS 12 AND 27.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TURN AROUND...DON'T DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.
&&
LAT...LON 3865 8971 3832 8970 3831 9001 3882 9000
3882 9009 3900 9008 3900 8964 3888 8964
3887 8960 3866 8959
$$
TILLY1 follow-up statement
803
WGUS73 KLSX 151443
FFSLSX
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
943 AM CDT MON AUG 15 2016
ILC119-163-151545-
/O.CON.KLSX.FF.W.0043.000000T0000Z-160815T1545Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
ST. CLAIR IL-MADISON IL-
943 AM CDT MON AUG 15 2016
...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1045 AM CDT FOR
EASTERN ST. CLAIR AND MADISON COUNTIES IN SOUTHWESTERN ILLINOIS...
AT 941 AM CDT...TRAINED WEATHER SPOTTERS HAD REPORTED UPWARD OF 4
INCHES OF RAINFALL LAST NIGHT INTO THIS MORNING. FLASH FLOODING IS
LIKELY ONGOING IN PORTIONS OF THE WARNING AREA.
SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
BELLEVILLE...O'FALLON...COLLINSVILLE...EDWARDSVILLE...
FAIRVIEW HEIGHTS...SWANSEA...GLEN CARBON...SHILOH...WOOD RIVER...
HIGHLAND...TROY...BETHALTO...MARYVILLE...MASCOUTAH...STAUNTON...
LEBANON...FREEBURG...CASEYVILLE...NEW BADEN AND SCOTT AFB.
A FEW LIGHT TO MODERATE SHOWERS WILL PERSIST THROUGH THE MORNING
HOURS...WHICH MAY KEEP THE FLOOD WATERS FROM QUICKLY RECEDING.
THIS INCLUDES THE FOLLOWING HIGHWAYS...
INTERSTATE 70 IN ILLINOIS BETWEEN EXITS 21 AND 30.
INTERSTATE 55 IN ILLINOIS BETWEEN EXITS 23 AND 37.
INTERSTATE 64 IN ILLINOIS BETWEEN EXITS 12 AND 27.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TURN AROUND...DON'T DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.
EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...COUNTRY ROADS...FARMLAND...AND OTHER LOW LYING
SPOTS.
&&
LAT...LON 3865 8971 3832 8970 3831 9001 3882 9000
3882 9009 3900 9008 3900 8964 3888 8964
3887 8960 3866 8959
$$
KDThe office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 15, 4:04 AM CDT | Flash Flood Warning | LSX | Madison, Saint Clair | 6 hr |
| Aug 15, 5:03 AM CDT | Flash Flood Warning | LSX | Monroe, Saint Clair | 6 hr |
| Aug 15, 6:59 AM CDT | Flash Flood Warning | LSX | Bond, Montgomery | 5 hr |
| Aug 15, 9:25 AM CDT | Areal Flood Warning | LSX | Clinton, Monroe, Randolph, Saint Clair, Washington | 3 hr |
| Aug 15, 9:58 AM CDT | Areal Flood Warning | LSX | Madison, Saint Clair | 3 hr |
| Aug 15, 10:48 AM CDT | Areal Flood Warning | LSX | Madison, Saint Clair | 3 hr |
| Aug 15, 11:01 AM CDT | Areal Flood Warning | LSX | Monroe, Saint Clair | 3 hr |
| Aug 15, 1:50 PM CDT | Areal Flood Warning | LSX | Madison, Monroe, Saint Clair | 3 hr |
Nearby
Flash Flood Warnings in Illinois, 2016Every flash flood warning in 2016
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.