Alert archive / Illinois / Severe Thunderstorm Warnings in 1996

Severe Thunderstorm Warning 18, NWS Lincoln, IL

March 24, 1996Knox County, Illinois

NWS Lincoln, IL issued this severe thunderstorm warning at Mar 24, 1996, 9:25 PM CST for Knox County, Illinois. It was in force for 35 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Mar 24, 1996, 9:25 PM CST (03:25 UTC)
Expired
Mar 24, 1996, 10:00 PM CST
In force
35 min
Issued by
NWS Lincoln, IL
Area
Whole counties

County Knox County, IL

The radar

The Quad Cities radar (KDVN), 82 km from the middle of the area, began a volume at 03:28 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 00:00Z, 3.4 hours before the alert went out and 80 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 1996-03-25Temperature 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 00:00Z on 1996-03-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 138 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
940 m above ground
0-6 km bulk shear
46 kt
0-1 km storm-relative helicity
138 m²/s²
0-3 km storm-relative helicity
138 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.

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Lincoln, IL wrote its last area forecast discussion before this severe thunderstorm warning went out at Mar 24, 7:28 PM CST, 1 hour 57 minutes earlier.

Area forecast discussion, Mar 24, 7:28 PM CST, 1 hour 57 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LINCOLN IL
730 PM CST SUN MAR 24 1996

ADAP AND 00Z SFC ANAL SHOWING LOW CENTERED OVR CENT IA WILL CONT TO
TRACK INTO SRN WI OVRNGT. LOW LVL JET PUNCHING INTO AREA SHOULD FURTHER
ENHANCE TSTM ACTIVITY ACROSS CENT IL. BEST TSTMS NOW DEVELOPG IN SPI
AREA. VWP SHOWING 50 KNT WNDS AT 2000 FT SO WILL NOT TAKE MUCH TO BRING
THESE WNDS TO SURFACE. CURRENT TREND ON COLD FRNT WOULD PLACE IT NEAR
PIA-SPI 09Z AND AND NEAR CMI AFT 12Z. ACTIVITY CLRS OUT RAPIDLY BEHIND
FRONT WITH MUCH COLDER AIR WORKING IN. TEMPS WILL THEN CONT TO FALL
DURING DAY MON. CURRENT FORECAST HAS THINGS WELL TRENDED.

PIA  37/STDLY FALLING  +2
SPI  38/STDLY FALLING  +2
DEC  40/(STDLY FALLING  +2
CMI  41/STDLY FALLING  +2

FRIEDERS

Nearby

Severe Thunderstorm Warnings in Illinois, 1996Every severe thunderstorm warning in 1996

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.