Alert archive / Illinois / Severe Thunderstorm Warnings in 1993

Severe Thunderstorm Warning 38, NWS Lincoln, IL

June 17, 1993Stephenson County, Illinois

NWS Lincoln, IL issued this severe thunderstorm warning at Jun 17, 1993, 2:48 PM CDT for Stephenson County, Illinois. It was in force for 42 min.

The area

The counties it named.

The facts

Issued
Jun 17, 1993, 2:48 PM CDT (19:48 UTC)
Expired
Jun 17, 1993, 3:30 PM CDT
In force
42 min
Issued by
NWS Lincoln, IL
Area
Whole counties

County Stephenson County, IL

The nearest sounding before it

Minneapolis, MN (KSTC), launched 12:00Z, 7.8 hours before the alert went out and 421 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, Minneapolis, MN at 12:00Z on 1993-06-17Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 13 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, Minneapolis, MN at 12:00Z on 1993-06-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 81 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
13 J/kg
Mixed-layer CIN
-45 J/kg
Mixed-layer LCL
540 m above ground
0-6 km bulk shear
59 kt
0-1 km storm-relative helicity
81 m²/s²
0-3 km storm-relative helicity
-16 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

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 Lincoln, IL issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 17, 1:56 PM CDTSevere Thunderstorm WarningILXStephenson49 min
Jun 17, 5:26 PM CDTSevere Thunderstorm WarningILXLee, Ogle49 min
Jun 17, 5:59 PM CDTTornado WarningILXOgle, Winnebago31 min
Jun 17, 6:29 PM CDTSevere Thunderstorm WarningILXBoone, Winnebago46 min
Jun 17, 6:52 PM CDTSevere Thunderstorm WarningILXCarroll31 min

Nearby

Severe Thunderstorm Warnings in Illinois, 1993Every severe thunderstorm warning in 1993

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.