Alert archive / Illinois / Flash Flood Warnings in 2016
Flash Flood Warning 48, NWS St. Louis, MO
NWS St. Louis, MO issued this flash flood warning at Sep 9, 2016, 8:10 PM CDT for Clinton County, Washington 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
- Sep 9, 2016, 8:10 PM CDT (01:10 UTC)
- Expired
- Sep 10, 2016, 12:15 AM CDT
- In force
- 4 hr
- Issued by
- NWS St. Louis, MO
- Area
- Storm-based polygon
- Flood severity
- None
Counties Clinton County, IL, Washington County, IL
The radar
The St Louis radar (KLSX), 109 km from the middle of the area, began a volume at 01:10 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, 1.2 hours before the alert went out and 205 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
- 237 J/kg
- Mixed-layer CIN
- -45 J/kg
- Mixed-layer LCL
- 606 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- 60 m²/s²
- 0-3 km storm-relative helicity
- 95 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.1
The text
As transmitted.
446 WGUS53 KLSX 100110 FFWLSX ILC027-189-100515- /O.NEW.KLSX.FF.W.0048.160910T0110Z-160910T0515Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE ST LOUIS MO 810 PM CDT FRI SEP 9 2016 THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A * FLASH FLOOD WARNING FOR... NORTHERN WASHINGTON COUNTY IN SOUTH CENTRAL ILLINOIS... SOUTHERN CLINTON COUNTY IN SOUTH CENTRAL ILLINOIS... * UNTIL 1215 AM CDT. * AT 809 PM CDT...DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCING HEAVY RAIN ACROSS THE WARNED AREA. BETWEEN TWO AND THREE INCHES OF RAIN HAVE ALREADY FALLEN. FLASH FLOODING IS EXPECTED TO BEGIN SHORTLY. * SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE... NEW BADEN...NASHVILLE...CENTRALIA...OKAWVILLE...GERMANTOWN... ALBERS...WAMAC...IRVINGTON...NEW MEMPHIS...SHATTUC...BARTELSO... BEAUCOUP...HOYLETON...JOHANNISBURG...HOFFMAN...DAMIANSVILLE... COVINGTON...RICHVIEW...ADDIEVILLE AND NEW MINDEN. THIS INCLUDES INTERSTATE 64 IN ILLINOIS BETWEEN EXITS 34 AND 61. PRECAUTIONARY/PREPAREDNESS ACTIONS... BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE DANGERS OF FLOODING. && LAT...LON 3832 8970 3855 8970 3862 8914 3835 8915 $$ TILLY
1 follow-up statement
110 WGUS73 KLSX 100509 FFSLSX FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 1209 AM CDT SAT SEP 10 2016 ILC027-189-100519- /O.EXP.KLSX.FF.W.0048.000000T0000Z-160910T0515Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ WASHINGTON IL-CLINTON IL- 1209 AM CDT SAT SEP 10 2016 ...THE FLASH FLOOD WARNING FOR NORTHERN WASHINGTON AND SOUTHERN CLINTON COUNTIES WILL EXPIRE AT 1215 AM CDT... THE HEAVY RAIN HAS ENDED. FLOODING IS NO LONGER EXPECTED TO POSE A THREAT. PLEASE CONTINUE TO HEED ANY REMAINING ROAD CLOSURES. LAT...LON 3832 8970 3855 8970 3862 8914 3835 8915 $$ TES
The office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 10, 4:19 AM CDT | Flash Flood Warning | LSX | Madison, Monroe, 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.