Alert archive / Missouri / Tornado Warnings in 1986

Tornado Warning 2, NWS St. Louis, MO

July 29, 1986Marion County, Missouri

NWS St. Louis, MO issued this tornado warning at Jul 29, 1986, 1:25 AM CDT for Marion County, Missouri. It was in force for 35 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 29, 1986, 1:25 AM CDT (06:25 UTC)
Expired
Jul 29, 1986, 2:00 AM CDT
In force
35 min
Issued by
NWS St. Louis, MO
Area
Whole counties

County Marion County, MO

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 29, 1:30 AM CDTThunderstorm Wind 87Marion, MO
Jul 29, 1:45 AM CDTThunderstorm Wind 78Marion, MO

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, 6.4 hours before the alert went out and 197 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 1986-07-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2172 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 1986-07-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 31 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
2172 J/kg
Mixed-layer CIN
-48 J/kg
Mixed-layer LCL
1200 m above ground
0-6 km bulk shear
35 kt
0-1 km storm-relative helicity
31 m²/s²
0-3 km storm-relative helicity
57 m²/s²
Significant tornado parameter
0.2
Supercell composite
1.6

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 St. Louis, MO issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 28, 11:55 PM CDTSevere Thunderstorm WarningLSXSchuyler, Scotland50 min
Jul 29, 12:15 AM CDTSevere Thunderstorm WarningLSXAdair, Knox45 min
Jul 29, 12:15 AM CDTSevere Thunderstorm WarningLSXClark45 min
Jul 29, 12:30 AM CDTSevere Thunderstorm WarningLSXLewis45 min
Jul 29, 12:55 AM CDTSevere Thunderstorm WarningLSXMarion45 min
Jul 29, 12:55 AM CDTSevere Thunderstorm WarningLSXShelby45 min
Jul 29, 1:20 AM CDTSevere Thunderstorm WarningLSXPike, Ralls40 min
Jul 29, 1:20 AM CDTSevere Thunderstorm WarningLSXMonroe40 min
Jul 29, 2:10 AM CDTSevere Thunderstorm WarningLSXLincoln50 min
Jul 29, 2:40 AM CDTSevere Thunderstorm WarningLSXSaint Charles50 min
Jul 29, 2:40 AM CDTSevere Thunderstorm WarningLSXWarren50 min
Jul 29, 3:10 AM CDTSevere Thunderstorm WarningLSXSaint Louis, City of Saint Louis50 min

Nearby

Tornado Warnings in Missouri, 1986Every tornado warning in 1986Tornadoes 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.