Alert archive / Illinois / Flash Flood Warnings in 2015
Flash Flood Warning 95, NWS St. Louis, MO
NWS St. Louis, MO issued this flash flood warning at Dec 28, 2015, 7:57 AM CST for 14 counties in Illinois. It was in force for 6 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
- Dec 28, 2015, 7:57 AM CST (13:57 UTC)
- Expired
- Dec 28, 2015, 2:00 PM CST
- In force
- 6 hr
- Issued by
- NWS St. Louis, MO
- Area
- Storm-based polygon
- Flood severity
- None
Counties Bond County, IL, Calhoun County, IL, Clinton County, IL, Fayette County, IL, Greene County, IL, Jersey County, IL, Macoupin County, IL, Madison County, IL, Marion County, IL, Monroe County, IL, Montgomery County, IL, Randolph County, IL, Saint Clair County, IL, Washington County, IL
The radar
The St Louis radar (KLSX), 76 km from the middle of the area, began a volume at 14:00 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 |
|---|---|---|---|
| Dec 28, 9:56 AM CST | HEAVY RAIN 9.98 | 2 S Roxana, IL | |
| Dec 28, 1:15 PM CST | HEAVY RAIN 8.13 | Jerseyville, IL | STORM TOTAL SO FAR. |
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 12:00Z, 2.0 hours before the alert went out and 180 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
- 3 J/kg
- Mixed-layer CIN
- 0 J/kg
- Mixed-layer LCL
- 535 m above ground
- 0-6 km bulk shear
- 75 kt
- 0-1 km storm-relative helicity
- 654 m²/s²
- 0-3 km storm-relative helicity
- 1003 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000
WGUS53 KLSX 281357
FFWLSX
ILC005-013-027-051-061-083-117-119-121-133-135-157-163-189-282000-
/O.NEW.KLSX.FF.W.0095.151228T1357Z-151228T2000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
757 AM CST MON DEC 28 2015
THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A
* FLASH FLOOD WARNING FOR...
BOND COUNTY IN SOUTH CENTRAL ILLINOIS...
WASHINGTON COUNTY IN SOUTH CENTRAL ILLINOIS...
GREENE COUNTY IN SOUTHWESTERN ILLINOIS...
CLINTON COUNTY IN SOUTH CENTRAL ILLINOIS...
ST. CLAIR COUNTY IN SOUTHWESTERN ILLINOIS...
MACOUPIN COUNTY IN SOUTHWESTERN ILLINOIS...
MONTGOMERY COUNTY IN SOUTH CENTRAL ILLINOIS...
MADISON COUNTY IN SOUTHWESTERN ILLINOIS...
MARION COUNTY IN SOUTH CENTRAL ILLINOIS...
FAYETTE COUNTY IN SOUTH CENTRAL ILLINOIS...
RANDOLPH COUNTY IN SOUTHWESTERN ILLINOIS...
CALHOUN COUNTY IN SOUTHWESTERN ILLINOIS...
JERSEY COUNTY IN SOUTHWESTERN ILLINOIS...
MONROE COUNTY IN SOUTHWESTERN ILLINOIS...
* UNTIL 200 PM CST MONDAY
* AT 753 AM CST...DOPPLER RADAR AND AUTOMATED RAIN GAUGES INDICATED
HEAVY RAIN FALLING ACROSS THE WARNED AREA. 5 TO 10 INCHES OF RAIN
HAS FALLEN SINCE SATURDAY MORNING. AN ADDITIONAL RAINFALL AMOUNTS
OF 1 TO 3 ARE LIKELY IN THE WARNED AREA TODAY. FLASH FLOODING IS
EXPECTED TO BEGIN SHORTLY.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
STAY AWAY OR BE SWEPT AWAY. RIVER BANKS AND CULVERTS CAN BECOME
UNSTABLE AND UNSAFE.
TURN AROUND...DONT DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.
&&
LAT...LON 3847 8914 3821 8915 3822 8959 3781 8968
3781 8969 3824 9036 3884 9010 3898 9043
3887 9056 3892 9065 3925 9073 3940 9092
3939 9062 3952 9058 3952 8953 3935 8953
3935 8914 3922 8914 3922 8881 3848 8870
$$
MILLERThe office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 28, 1:14 PM CST | Areal Flood Warning | LSX | Clinton, Marion, Monroe, Randolph, Saint Clair, Washington | 24 hr |
| Dec 28, 1:16 PM CST | Areal Flood Warning | LSX | Bond, Calhoun, Fayette, Greene, Jersey, Macoupin and 2 more | 24 hr |
Nearby
Flash Flood Warnings in Illinois, 2015Every flash flood warning in 2015
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.