Alert archive / Indiana / Winter Storm Warnings in 2008

Winter Storm Warning 8, NWS Chicago, IL

December 23, 20084 counties in Illinois; 5 counties in Indiana

NWS Chicago, IL issued this winter storm warning at Dec 23, 2008, 2:32 PM CST for 4 counties in Illinois; 5 counties in Indiana. It was in force for 7 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Dec 23, 2008, 2:32 PM CST (20:32 UTC)
Expired
Dec 23, 2008, 9:20 PM CST
In force
7 hr
Issued by
NWS Chicago, IL

Counties Ford County, IL, Iroquois County, IL, Kankakee County, IL, Livingston County, IL, Benton County, IN, Jasper County, IN, Lake County, IN, Newton County, IN, Porter County, IN

The radar

The Chicago radar (KLOT), 78 km from the middle of the area, began a volume at 20:34 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.

The nearest sounding before it

Davenport, (KDVN), launched 12:00Z, 8.5 hours before the alert went out and 249 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, Davenport, at 12:00Z on 2008-12-23Temperature 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, Davenport, at 12:00Z on 2008-12-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 567 square meters per square second.1939587897117Sfc1 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
587 m above ground
0-6 km bulk shear
75 kt
0-1 km storm-relative helicity
567 m²/s²
0-3 km storm-relative helicity
647 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The office that day

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

IssuedProductOfficeCountiesLasted
Dec 22, 9:22 PM CSTSmall Craft AdvisoryLOT27 hr
Dec 23, 5:53 AM CSTRiver Flood WarningLOTKankakee7 days
Dec 23, 5:53 AM CSTRiver Flood WarningLOTGrundy, Will6 days
Dec 23, 12:57 PM CSTRiver Flood AdvisoryLOTWinnebago8 days
Dec 23, 10:51 AM CSTRiver Flood WarningLOTLake, Newton8 days

Nearby

Winter Storm Warnings in Indiana, 2008Winter Storm Warnings in Illinois, 2008Every winter storm warning in 2008

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.