Alert archive / Illinois / Flash Flood Warnings in 2018
Flash Flood Warning 37, NWS St. Louis, MO
NWS St. Louis, MO issued this flash flood warning at Sep 7, 2018, 10:33 AM CDT for Adams County, Illinois. It was in force for 6 hr. 1 report 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
- Sep 7, 2018, 10:33 AM CDT (15:33 UTC)
- Expired
- Sep 7, 2018, 4:30 PM CDT
- In force
- 6 hr
- Issued by
- NWS St. Louis, MO
- Area
- Storm-based polygon
- Flood severity
- None
County Adams County, IL
The radar
The St Louis radar (KLSX), 165 km from the middle of the area, began a volume at 15:34 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 |
|---|---|---|---|
| Sep 7, 11:36 AM CDT | FLOOD | 2 W Camp Point, IL | WATER OVER PARTS OF HIGHWAY 24 WEST OF CAMP POINT. DEPTH OF WATER UNKNOWN BUT REPORTS INDICATE THE HIGHWAY REMAINS OPEN. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Davenport, (KDVN), launched 12:00Z, 3.6 hours before the alert went out and 182 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
- 877 m above ground
- 0-6 km bulk shear
- 36 kt
- 0-1 km storm-relative helicity
- -12 m²/s²
- 0-3 km storm-relative helicity
- 21 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
848
WGUS53 KLSX 071533
FFWLSX
ILC001-072130-
/O.NEW.KLSX.FF.W.0037.180907T1533Z-180907T2130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service St Louis MO
1033 AM CDT FRI SEP 7 2018
The National Weather Service in St Louis has issued a
* Flash Flood Warning for...
Northern Adams County in west central Illinois...
* Until 430 PM CDT.
* At 1030 AM CDT, Doppler radar indicated persistent heavy rain
across the warned area. Very efficient rainfall production has
resulted in high rainfall rates. Radar indicates that up to three
inches of rain have already fallen since 900 AM in the region
bounded by Fowler, Mendon, and Camp Point. Flash flooding is
expected to begin shortly.
* Some locations that will experience flooding include...
Quincy, Camp Point, Mendon, La Grange, Clayton, Golden, Ursa,
Loraine, Woodville, Lima, Coatsburg, Columbus, La Prairie, Meyer,
Paloma, Fowler and Chatton.
This includes Interstate 172 near exit 19.
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.
Stay away or be swept away. River banks and culverts can become
unstable and unsafe.
&&
LAT...LON 4019 9092 3998 9092 3996 9145 4003 9150
4006 9149 4012 9151 4019 9151 4020 9150
$$
Glass1 follow-up statement
586
WGUS73 KLSX 071815
FFSLSX
Flash Flood Statement
National Weather Service St Louis MO
115 PM CDT FRI SEP 7 2018
ILC001-072130-
/O.CON.KLSX.FF.W.0037.000000T0000Z-180907T2130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Adams IL-
115 PM CDT FRI SEP 7 2018
...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 430 PM CDT FOR
NORTHERN ADAMS COUNTY...
At 111 PM CDT, Doppler radar continued to show widespread rain which
was heavy at times across the warned area. Radar estimates suggest
anywhere from two to three and a half inches of rain has already
fallen since early this morning. The highest amounts have been
centered on an axis from southeast of La Grange eastward through
Camp Point.
Some locations that will experience flooding include...
Quincy, Camp Point, Mendon, La Grange, Clayton, Golden, Ursa,
Loraine, Woodville, Lima, Coatsburg, Columbus, La Prairie, Meyer,
Paloma, Fowler and Chatton.
Additional rainfall amounts of 1 to 2 inches are possible through
late afternoon in the warned area.
This includes Interstate 172 near exit 19.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Excessive runoff from heavy rainfall will cause flooding of small
creeks and streams, country roads, farmland, and other low lying
spots.
Stay away or be swept away. River banks and culverts can become
unstable and unsafe.
&&
LAT...LON 4019 9092 3998 9092 3996 9145 4003 9150
4006 9149 4012 9151 4019 9151 4020 9150
$$
GlassThe office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 6, 8:26 PM CDT | River Flood Warning | LSX | Brown | 60 hr |
| Sep 6, 10:20 PM CDT | River Flood Warning | LSX | Adams | 6 days |
| Sep 7, 10:12 AM CDT | Areal Flood Advisory | LSX | Adams | 3 hr |
| Sep 7, 4:31 PM CDT | Areal Flood Warning | LSX | Adams | 18 hr |
| Sep 7, 5:31 PM CDT | Flash Flood Warning | LSX | Bond, Fayette, Macoupin, Montgomery | 6 hr |
Nearby
Flash Flood Warnings in Illinois, 2018Every flash flood warning in 2018
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.