Alert archive / Illinois / Flash Flood Warnings in 2016
Flash Flood Warning 13, NWS St. Louis, MO
NWS St. Louis, MO issued this flash flood warning at Jul 20, 2016, 6:43 AM CDT for Madison County, Saint Clair County, Illinois. It was in force for 4 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
- Jul 20, 2016, 6:43 AM CDT (11:43 UTC)
- Expired
- Jul 20, 2016, 10:45 AM CDT
- In force
- 4 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), 70 km from the middle of the area, began a volume at 11:46 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 00:00Z, 11.7 hours before the alert went out and 206 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
- 2669 J/kg
- Mixed-layer CIN
- -5 J/kg
- Mixed-layer LCL
- 962 m above ground
- 0-6 km bulk shear
- 13 kt
- 0-1 km storm-relative helicity
- 7 m²/s²
- 0-3 km storm-relative helicity
- 2 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 0.5
The text
As transmitted.
122
WGUS53 KLSX 201143
FFWLSX
ILC119-163-201545-
/O.NEW.KLSX.FF.W.0013.160720T1143Z-160720T1545Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
643 AM CDT WED JUL 20 2016
THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A
* FLASH FLOOD WARNING FOR...
NORTHEASTERN ST. CLAIR COUNTY IN SOUTHWESTERN ILLINOIS...
SOUTHEASTERN MADISON COUNTY IN SOUTHWESTERN ILLINOIS...
* UNTIL 1045 AM CDT
* AT 643 AM CDT...DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCING
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...TROY...
MARYVILLE...MASCOUTAH...LEBANON...FREEBURG...CASEYVILLE...
NEW BADEN...SCOTT AFB...ST. JACOB AND SUMMERFIELD.
THIS INCLUDES 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.
A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING.
IF YOU ARE IN THE WARNED AREA MOVE TO HIGHER GROUND IMMEDIATELY.
RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE
PRECAUTIONS TO PROTECT LIFE AND PROPERTY.
&&
LAT...LON 3844 8997 3866 9000 3880 8997 3872 8971
3844 8971
$$
CARNEY1 follow-up statement
629
WGUS73 KLSX 201551
FFSLSX
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
1051 AM CDT WED JUL 20 2016
ILC119-163-201600-
/O.EXP.KLSX.FF.W.0013.000000T0000Z-160720T1545Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
ST. CLAIR IL-MADISON IL-
1051 AM CDT WED JUL 20 2016
...THE FLASH FLOOD WARNING FOR NORTHEASTERN ST. CLAIR AND
SOUTHEASTERN MADISON COUNTIES IN SOUTHWESTERN ILLINOIS HAS EXPIRED...
THE HEAVY RAIN HAS ENDED. PLEASE CONTINUE TO HEED ANY REMAINING ROAD
CLOSURES.
LAT...LON 3844 8997 3866 9000 3880 8997 3872 8971
3844 8971
$$
GOSSELINThe office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 19, 7:31 PM CDT | Special Weather Statement | LSX | Calhoun, Jersey, Macoupin | 44 min |
| Jul 19, 7:47 PM CDT | Severe Thunderstorm Warning | LSX | Calhoun, Jersey | 43 min |
| Jul 19, 8:26 PM CDT | Severe Thunderstorm Warning | LSX | Madison, Monroe, Saint Clair | 49 min |
| Jul 19, 9:07 PM CDT | Special Weather Statement | LSX | Monroe, Saint Clair | 38 min |
| Jul 20, 5:50 AM CDT | Areal Flood Advisory | LSX | Jersey, Macoupin, Madison, Saint Clair | 4 hr |
| Jul 20, 5:55 AM CDT | Areal Flood Advisory | LSX | Brown, Pike | 4 hr |
| Jul 20, 7:09 AM CDT | Flash Flood Warning | LSX | Greene, Jersey | 4 hr |
| Jul 20, 7:39 AM CDT | Flash Flood Warning | LSX | Macoupin, Madison | 4 hr |
| Jul 20, 10:50 AM CDT | Areal Flood Warning | LSX | Greene, Jersey, Macoupin, Madison, Saint Clair | 6 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.