Alert archive / Illinois / Severe Thunderstorm Warnings in 1989

Severe Thunderstorm Warning 1, NWS Lincoln, IL

March 17, 1989McDonough County, Illinois

NWS Lincoln, IL issued this severe thunderstorm warning at Mar 17, 1989, 10:52 AM CST for McDonough County, Illinois. It was in force for 23 min.

The area

The counties it named.

The facts

Issued
Mar 17, 1989, 10:52 AM CST (16:52 UTC)
Expired
Mar 17, 1989, 11:15 AM CST
In force
23 min
Issued by
NWS Lincoln, IL
Area
Whole counties

County McDonough County, IL

The radar

The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.

The nearest sounding before it

Peoria Regional, IL (KPIA), launched 12:00Z, 4.9 hours before the alert went out and 94 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, Peoria Regional, IL at 12:00Z on 1989-03-17Temperature 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, Peoria Regional, IL at 12:00Z on 1989-03-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 256 square meters per square second.1939587897Sfc1 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
1272 m above ground
0-6 km bulk shear
60 kt
0-1 km storm-relative helicity
256 m²/s²
0-3 km storm-relative helicity
319 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.

In the hours before

Special weather statement, Mar 17, 10:33 AM CST, 19 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEORIA IL
1030 AM CST FRI MAR 17 1988

...THUNDERSTORMS MOVING INTO WESTERN ILLINOIS...

AT 1030 CST AM RADAR INDICATED SOME HEAVY THUNDERSTORMS BEGINNING
TO MOVE ACROSS THE MISSISSIPPI RIVER INTO WESTERN ILLINOIS.
THE STRONGEST STORMS WERE BETWEEN BURLINGTON IOWA AND KEOKUK
IOWA.

THESE STORMS WERE MOVING EAST NORTHEAST AT ABOUT 40 MPH AND WILL
BE MOVING ACROSS HENDERSON AND WARREN COUNTIES BETfWEEN 1030 AM
AND 1130 AM CST.

THESE STORMS MAY PRODUCE STRONG GUSTY WINDS TO AROUND 40 MPH...
DANGEROUS LIGHTNING AND HEAVY RAIN.

ARMBRUST

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 17, 10:52 AM CSTSevere Thunderstorm WarningILXWarren53 min
Mar 17, 11:25 AM CSTSevere Thunderstorm WarningILXKnox, Peoria40 min
Mar 17, 5:06 PM CSTSevere Thunderstorm WarningILXMorgan69 min
Mar 17, 5:28 PM CSTSevere Thunderstorm WarningILXSangamon62 min

Nearby

Severe Thunderstorm Warnings in Illinois, 1989Every severe thunderstorm warning in 1989

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.