Alert archive / Illinois / Areal Flood Advisories in 2021
Areal Flood Advisory 21, NWS Lincoln, IL
NWS Lincoln, IL issued this areal flood advisory at Aug 8, 2021, 4:45 PM CDT for McLean County, Illinois. It was in force for 2 hr.
The area
The outline as issued.
The facts
- Issued
- Aug 8, 2021, 4:45 PM CDT (21:45 UTC)
- Expired
- Aug 8, 2021, 6:45 PM CDT
- In force
- 2 hr
- Issued by
- NWS Lincoln, IL
- Area
- Storm-based polygon
County McLean County, IL
The radar
The Lincoln radar (KILX), 47 km from the middle of the area, began a volume at 21:46 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, 9.8 hours before the alert went out and 50 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
- 310 J/kg
- Mixed-layer CIN
- -97 J/kg
- Mixed-layer LCL
- 1165 m above ground
- 0-6 km bulk shear
- 17 kt
- 0-1 km storm-relative helicity
- -25 m²/s²
- 0-3 km storm-relative helicity
- -3 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
886 WGUS83 KILX 082145 FLSILX Flood Advisory National Weather Service Lincoln IL 445 PM CDT Sun Aug 8 2021 ILC113-082345- /O.NEW.KILX.FA.Y.0021.210808T2145Z-210808T2345Z/ /00000.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ McLean IL- 445 PM CDT Sun Aug 8 2021 The National Weather Service in Lincoln has issued a * Urban and Small Stream Flood Advisory for... Central McLean County in central Illinois... * Until 645 PM CDT. * At 445 PM CDT, Doppler radar indicated heavy rain due to thunderstorms. This will cause urban and small stream flooding. Between 1 and 2 inches of rain have fallen. * Some locations that will experience flooding include... Bloomington, Normal, Towanda and Bloomington Airport. PRECAUTIONARY/PREPAREDNESS ACTIONS... Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. && LAT...LON 4043 8905 4045 8889 4057 8891 4054 8907 $$ 37
The office that day
Everything else NWS Lincoln, IL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 8, 2:21 PM CDT | Special Weather Statement | ILX | McLean | 24 min |
| Aug 8, 3:30 PM CDT | Special Weather Statement | ILX | McLean | 30 min |
| Aug 8, 4:29 PM CDT | Special Weather Statement | ILX | Morgan | 31 min |
| Aug 8, 4:54 PM CDT | Special Weather Statement | ILX | Menard | 36 min |
| Aug 8, 5:02 PM CDT | Special Weather Statement | ILX | Woodford | 28 min |
| Aug 8, 5:05 PM CDT | Severe Thunderstorm Warning | ILX | Logan, Mason, Menard | 25 min |
| Aug 8, 5:14 PM CDT | Severe Thunderstorm Warning | ILX | McLean, Tazewell, Woodford | 46 min |
| Aug 8, 5:29 PM CDT | Special Weather Statement | ILX | Sangamon | 31 min |
| Aug 8, 5:35 PM CDT | Flash Flood Warning | ILX | McLean | 3 hr |
| Aug 8, 5:46 PM CDT | Special Weather Statement | ILX | Sangamon | 29 min |
Nearby
Areal Flood Advisories in Illinois, 2021Every areal flood advisory 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.