Alert archive / Illinois / Flash Flood Warnings in 2021
Flash Flood Warning 17, NWS Lincoln, IL
NWS Lincoln, IL issued this flash flood warning at Jul 11, 2021, 9:31 PM CDT for Vermilion 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 11, 2021, 9:31 PM CDT (02:31 UTC)
- Expired
- Jul 12, 2021, 12:30 AM CDT
- In force
- 3 hr
- Issued by
- NWS Lincoln, IL
- Area
- Storm-based polygon
- Flood severity
- None
County Vermilion County, IL
The radar
The Lincoln radar (KILX), 131 km from the middle of the area, began a volume at 02:30 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, 2.5 hours before the alert went out and 70 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
- 460 J/kg
- Mixed-layer CIN
- -16 J/kg
- Mixed-layer LCL
- 553 m above ground
- 0-6 km bulk shear
- 16 kt
- 0-1 km storm-relative helicity
- 78 m²/s²
- 0-3 km storm-relative helicity
- 89 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
519
WGUS53 KILX 120231
FFWILX
ILC183-120530-
/O.NEW.KILX.FF.W.0017.210712T0231Z-210712T0530Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Lincoln IL
931 PM CDT Sun Jul 11 2021
The National Weather Service in Lincoln has issued a
* Flash Flood Warning for...
Southwestern Vermilion County in east central Illinois...
* Until 1230 AM CDT.
* At 930 PM CDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Between 1.5 and 2.5 inches of
rain have fallen. Flash flooding is ongoing or expected to begin
shortly.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Doppler radar.
IMPACT...Flooding of small creeks and streams, urban areas,
highways, streets and underpasses as well as other
drainage and low lying areas.
* Some locations that will experience flash flooding include...
Sidell, Indianola and Jamaica.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
LAT...LON 3989 8791 3989 8769 3999 8770 4004 8793
FLASH FLOOD...RADAR INDICATED
EXPECTED RAINFALL...1-2 INCHES IN 1 HOUR
$$
252 follow-up statements
270
WGUS73 KILX 120436
FFSILX
Flash Flood Statement
National Weather Service Lincoln IL
1136 PM CDT Sun Jul 11 2021
ILC183-120530-
/O.CON.KILX.FF.W.0017.000000T0000Z-210712T0530Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Vermilion IL-
1136 PM CDT Sun Jul 11 2021
...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1230 AM CDT MONDAY
FOR SOUTH CENTRAL VERMILION COUNTY...
At 1136 PM CDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Between 3 and 4 inches of rain
have fallen. Flash flooding is already occurring.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Doppler radar.
IMPACT...Flooding of small creeks and streams, urban areas,
highways, streets and underpasses as well as other
drainage and low lying areas.
Some locations that will experience flash flooding include...
Indianola.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Be especially cautious at night when it is harder to recognize the
dangers of flooding.
&&
LAT...LON 3989 8782 3989 8772 3995 8771 3995 8776
FLASH FLOOD...RADAR INDICATED
EXPECTED RAINFALL...1-2 INCHES IN 1 HOUR
$$
37681 WGUS73 KILX 120522 FFSILX Flash Flood Statement National Weather Service Lincoln IL 1222 AM CDT Mon Jul 12 2021 ILC183-120532- /O.EXP.KILX.FF.W.0017.000000T0000Z-210712T0530Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Vermilion IL- 1222 AM CDT Mon Jul 12 2021 ...FLASH FLOOD WARNING WILL EXPIRE AT 1230 AM CDT EARLY THIS MORNING FOR SOUTH CENTRAL VERMILION COUNTY... The heavy rain has ended. Flash flooding is no longer expected to pose a threat. Please continue to heed remaining road closures. LAT...LON 3989 8782 3989 8772 3995 8771 3995 8776 $$ 37
The office that day
Everything else NWS Lincoln, IL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 11, 7:00 PM CDT | Areal Flood Advisory | ILX | Vermilion | 5 hr |
| Jul 11, 8:35 PM CDT | Flash Flood Warning | ILX | Sangamon | 3 hr |
| Jul 12, 11:20 AM CDT | Areal Flood Advisory | ILX | Macon | 6 hr |
| Jul 12, 2:54 PM CDT | Severe Thunderstorm Warning | ILX | Edgar | 30 min |
Nearby
Flash Flood Warnings in Illinois, 2021Every flash flood warning in 2021
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.