Alert archive / Illinois / Severe Thunderstorm Warnings in 1986

Severe Thunderstorm Warning 57, NWS Lincoln, IL

July 31, 1986Fulton County, Peoria County, Illinois

NWS Lincoln, IL issued this severe thunderstorm warning at Jul 31, 1986, 1:36 AM CDT for Fulton County, Peoria County, Illinois. It was in force for 69 min. 2 reports 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
Jul 31, 1986, 1:36 AM CDT (06:36 UTC)
Expired
Jul 31, 1986, 2:45 AM CDT
In force
69 min
Issued by
NWS Lincoln, IL
Area
Whole counties

Counties Fulton County, IL, Peoria County, IL

The radar

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

What was reported inside it

TimeReportWhereRemark
Jul 31, 2:25 AM CDTThunderstorm Wind 0Peoria, IL
Jul 31, 2:25 AM CDTThunderstorm Wind 0Fulton, 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. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.

The nearest sounding before it

Peoria Regional, IL (KPIA), launched 00:00Z, 6.6 hours before the alert went out and 33 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 00:00Z on 1986-07-31Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1439 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, Peoria Regional, IL at 00:00Z on 1986-07-31The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 76 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
1439 J/kg
Mixed-layer CIN
-102 J/kg
Mixed-layer LCL
1042 m above ground
0-6 km bulk shear
60 kt
0-1 km storm-relative helicity
76 m²/s²
0-3 km storm-relative helicity
238 m²/s²
Significant tornado parameter
0.5
Supercell composite
2.4

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
Jul 31, 2:53 AM CDTSevere Thunderstorm WarningILXFulton, Peoria22 min
Jul 31, 3:17 AM CDTSevere Thunderstorm WarningILXMacon, Moultrie, Piatt58 min
Jul 31, 3:17 AM CDTSevere Thunderstorm WarningILXDouglas58 min
Jul 31, 4:11 AM CDTSevere Thunderstorm WarningILXSangamon19 min
Jul 31, 4:36 AM CDTSevere Thunderstorm WarningILXSangamon24 min
Jul 31, 4:53 AM CDTSevere Thunderstorm WarningILXChristian52 min
Jul 31, 5:15 AM CDTSevere Thunderstorm WarningILXMacon45 min
Jul 31, 5:35 AM CDTSevere Thunderstorm WarningILXMoultrie, Shelby40 min
Jul 31, 5:49 AM CDTSevere Thunderstorm WarningILXColes, Cumberland41 min

Nearby

Severe Thunderstorm Warnings in Illinois, 1986Every severe thunderstorm warning in 1986

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.