Alert archive / Illinois / Severe Thunderstorm Warnings in 1996

Severe Thunderstorm Warning 158, NWS Lincoln, IL

October 17, 1996Effingham County, Illinois

NWS Lincoln, IL issued this severe thunderstorm warning at Oct 17, 1996, 6:06 PM CDT for Effingham County, Illinois. It was in force for 54 min. 1 report came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued: Oct 17, 1996, 6:06 PM CDT (23:06 UTC)
Expired: Oct 17, 1996, 7:00 PM CDT
In force: 54 min
Issued by: NWS Lincoln, IL
Area: Whole counties

County Effingham County, IL

What was reported inside it

Time	Report	Where	Remark
Oct 17, 6:29 PM CDT	Thunderstorm Wind	Effingham, IL

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 11.1 hours before the alert went out and 121 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 8 J/kg
Mixed-layer CIN: -442 J/kg
Mixed-layer LCL: 1191 m above ground
0-6 km bulk shear: 33 kt
0-1 km storm-relative helicity: 203 m²/s²
0-3 km storm-relative helicity: 185 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 Oct 17, 2:05 PM CDT, 4 hours 1 minute earlier.

Area forecast discussion, Oct 17, 2:05 PM CDT, 4 hours 1 minute before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LINCOLN IL
200 PM CDT THU OCT 17 1996

THIS WIL BE SHORT SINCE SVR TSTM WATCH JUST ISSUED AND CONVECTION
APPCHNG.

LTST ILX 88D INDICATED CONVECTION FIRING RAPIDLY JUST AHD OF CDFNT
IN WCENT IL. THESE STORMS MOVG INTO AREA OF MOCONV MAX BTWN STL-SPI
AND LOW LVL THRML AND MOISTURE AXIS. THIS SQUALL LINE WIL MARCH
ACRS OUR CWA REST OF AFTN INTO ERLY EVE AHD OF CDFNT. THE FNT IS
XPCTD TO MOVE EAST OF IL ERLY THIS EVE (01-03Z) ENDING CHC OF
SIGNIF PCPN. DEEP WRAP ARND MOISTURE TO STAY NORTH OF AREA...
BUT LINGERING LOW LVL MOISTURE AND APPCHNG NEG TILT UPR LVL TROF
MAY HELP PRODUCE SCTD SPRNKLS/DRIZZLE OVERNITE. CLDNS TO LINGER
TIL ERLY MRNG THEN BRIEF PERIOD OF CLRNG BFR HTG RAPIDLY DEVELOPS
CLDS AGAIN.

XPCT OVERNITE LOWS ARND 40 WITH ANTICIPATED CLD CVR...WHICH IS
SIMILAR IN BOTH FWC AND FAN. FOR FRIDAY THINK FWC TEMPS TOO WARM
SO WOULD LEAN TWD COOLER FAN TEMPS.

PIA   40/52  31
SPI   41/53  31
DEC   41/53  31
CMI   41/53  51
SEIL  43/55  51

MILLER

In the hours before

Special weather statement, Oct 17, 4:50 PM CDT, 1 hour 16 minutes before

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Special weather statement, Oct 17, 6:04 PM CDT, 2 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Oct 17, 2:17 PM CDT	Severe Thunderstorm Warning	ILX	Scott	43 min
Oct 17, 2:50 PM CDT	Severe Thunderstorm Warning	ILX	Fulton, Mason, Tazewell	40 min
Oct 17, 2:50 PM CDT	Severe Thunderstorm Warning	ILX	Peoria	40 min
Oct 17, 4:20 PM CDT	Severe Thunderstorm Warning	ILX	Sangamon	40 min
Oct 17, 5:27 PM CDT	Severe Thunderstorm Warning	ILX	Macon, Piatt	48 min
Oct 17, 6:32 PM CDT	Severe Thunderstorm Warning	ILX	Coles, Cumberland	43 min

Nearby

Severe Thunderstorm Warnings in Illinois, 1996 Every 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.