Alert archive / Illinois / Flash Flood Warnings in 2015
Flash Flood Warning 72, NWS St. Louis, MO
NWS St. Louis, MO issued this flash flood warning at Jul 27, 2015, 4:42 PM CDT for Monroe County, Saint Clair County, Illinois. It was in force for 3 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 27, 2015, 4:42 PM CDT (21:42 UTC)
- Expired
- Jul 27, 2015, 7:45 PM CDT
- In force
- 3 hr
- Issued by
- NWS St. Louis, MO
- Area
- Storm-based polygon
- Flood severity
- None
Counties Monroe County, IL, Saint Clair County, IL
The radar
The St Louis radar (KLSX), 56 km from the middle of the area, began a volume at 21:42 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 12:00Z, 9.7 hours before the alert went out and 235 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
- -65 J/kg
- Mixed-layer LCL
- 752 m above ground
- 0-6 km bulk shear
- 13 kt
- 0-1 km storm-relative helicity
- 15 m²/s²
- 0-3 km storm-relative helicity
- 46 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
408
WGUS53 KLSX 272142
FFWLSX
ILC133-163-280045-
/O.NEW.KLSX.FF.W.0072.150727T2142Z-150728T0045Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
442 PM CDT MON JUL 27 2015
THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A
* FLASH FLOOD WARNING FOR...
NORTH CENTRAL MONROE COUNTY IN SOUTHWESTERN ILLINOIS...
WEST CENTRAL ST. CLAIR COUNTY IN SOUTHWESTERN ILLINOIS...
* UNTIL 745 PM CDT
* AT 441 PM CDT...DOPPLER RADAR INDICATED A THUNDERSTORM 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...
WATERLOO...COLUMBIA...DUPO...MILLSTADT AND BARR.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
MOVE TO HIGHER GROUND NOW. ACT QUICKLY TO PROTECT YOUR LIFE.
TURN AROUND...DONT DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.
&&
LAT...LON 3834 9013 3846 9028 3853 9019 3840 9003
$$
BYRDThe office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 27, 3:13 PM CDT | Special Weather Statement | LSX | Saint Clair | 47 min |
| Jul 27, 3:40 PM CDT | Excessive Heat Warning | LSX | Calhoun, Clinton, Jersey, Madison, Marion, Monroe and 3 more | 48 hr |
| Jul 27, 3:46 PM CDT | Areal Flood Advisory | LSX | Monroe, Saint Clair | 3 hr |
| Jul 27, 4:10 PM CDT | Severe Thunderstorm Warning | LSX | Randolph, Saint Clair, Washington | 19 min |
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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.