Alert archive / Illinois / Severe Thunderstorm Warnings in 1995

Severe Thunderstorm Warning 36, NWS Chicago, IL

July 4, 1995Winnebago County, Illinois

NWS Chicago, IL issued this severe thunderstorm warning at Jul 4, 1995, 11:47 PM CDT for Winnebago County, Illinois. It was in force for 26 min.

The area

The counties it named.

The facts

Issued
Jul 4, 1995, 11:47 PM CDT (04:47 UTC)
Expired
Jul 5, 1995, 12:13 AM CDT
In force
26 min
Issued by
NWS Chicago, IL
Area
Whole counties

County Winnebago County, IL

The nearest sounding before it

Davenport, (KDVN), launched 00:00Z, 4.8 hours before the alert went out and 136 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 00:00Z on 1995-07-05Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 403 joules per kilogram.LCLLFCEL10008507005003002001001 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 00:00Z on 1995-07-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 186 square meters per square second.19395878Sfc1 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
403 J/kg
Mixed-layer CIN
-105 J/kg
Mixed-layer LCL
1293 m above ground
0-6 km bulk shear
22 kt
0-1 km storm-relative helicity
186 m²/s²
0-3 km storm-relative helicity
230 m²/s²
Significant tornado parameter
0.0
Supercell composite
2.5

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The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 4, 11:47 PM CDTSevere Thunderstorm WarningLOTBoone43 min
Jul 5, 12:04 AM CDTSevere Thunderstorm WarningLOTDeKalb26 min
Jul 5, 12:41 AM CDTSevere Thunderstorm WarningLOTGrundy, Kendall34 min

Nearby

Severe Thunderstorm Warnings in Illinois, 1995Every severe thunderstorm warning in 1995

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.