Alert archive / Illinois / Areal Flood Advisories in 2016

Areal Flood Advisory 2, NWS Lincoln, IL

February 2, 2016Champaign County, Illinois

NWS Lincoln, IL issued this areal flood advisory at Feb 2, 2016, 6:50 PM CST for Champaign County, Illinois. It was in force for 3 hr.

The area

The counties it named.

The facts

Issued
Feb 2, 2016, 6:50 PM CST (00:50 UTC)
Expired
Feb 2, 2016, 9:45 PM CST
In force
3 hr
Issued by
NWS Lincoln, IL
Area
Storm-based polygon

County Champaign County, IL

The radar

The Lincoln radar (KILX), 97 km from the middle of the area, began a volume at 00:50 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, 0.8 hours before the alert went out and 34 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.

Skew-T log-pSkew-T log-p diagram, Lincoln, IL at 00:00Z on 2016-02-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Lincoln, IL at 00:00Z on 2016-02-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -143 square meters per square second.1939587897117136156175Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1004 m above ground
0-6 km bulk shear
117 kt
0-1 km storm-relative helicity
-143 m²/s²
0-3 km storm-relative helicity
133 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The office that day

Everything else NWS Lincoln, IL issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Feb 2, 6:19 PM CSTFlash Flood WarningILXChampaign, Piatt3 hr
Feb 2, 6:38 PM CSTAreal Flood AdvisoryILXMoultrie, Shelby3 hr
Feb 2, 7:09 PM CSTDense Fog AdvisoryILXCass, Champaign, Christian, Coles, DeWitt, Douglas and 21 more8 hr

Nearby

Areal Flood Advisories in Illinois, 2016Every areal flood advisory 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.