Alert archive / Illinois / Severe Thunderstorm Warnings in 1993

Severe Thunderstorm Warning 59, NWS Quad Cities, IA

July 8, 1993Rock Island County, Illinois

NWS Quad Cities, IA issued this severe thunderstorm warning at Jul 8, 1993, 10:14 AM CDT for Rock Island County, Illinois. It was in force for 46 min.

The area

The counties it named.

The facts

Issued
Jul 8, 1993, 10:14 AM CDT (15:14 UTC)
Expired
Jul 8, 1993, 11:00 AM CDT
In force
46 min
Issued by
NWS Quad Cities, IA
Area
Whole counties

County Rock Island County, IL

The nearest sounding before it

Green Bay/Straub, WI (KGRB), launched 12:00Z, 3.2 hours before the alert went out and 391 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, Green Bay/Straub, WI at 12:00Z on 1993-07-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 6 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, Green Bay/Straub, WI at 12:00Z on 1993-07-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 41 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
6 J/kg
Mixed-layer CIN
-72 J/kg
Mixed-layer LCL
687 m above ground
0-6 km bulk shear
41 kt
0-1 km storm-relative helicity
41 m²/s²
0-3 km storm-relative helicity
46 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 Quad Cities, IA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 8, 9:51 AM CDTSevere Thunderstorm WarningDVNLouisa39 min
Jul 8, 10:14 AM CDTSevere Thunderstorm WarningDVNMuscatine31 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.