Alert archive / Missouri / Tornado Warnings in 1990

Tornado Warning 2, NWS St. Louis, MO

May 15, 1990Saint Louis County, City of Saint Louis, Missouri

NWS St. Louis, MO issued this tornado warning at May 15, 1990, 5:27 PM CDT for Saint Louis County, City of Saint Louis, Missouri. It was in force for 48 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
May 15, 1990, 5:27 PM CDT (22:27 UTC)
Expired
May 15, 1990, 6:15 PM CDT
In force
48 min
Issued by
NWS St. Louis, MO
Area
Whole counties

Counties City of Saint Louis, MO, Saint Louis 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
May 15, 5:27 PM CDTHail 1.5St. Louis, MO
May 15, 5:55 PM CDTHail 1.75St. Louis, 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

Paducah/Barkley, KY (KPAH), launched 12:00Z, 10.5 hours before the alert went out and 225 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, Paducah/Barkley, KY at 12:00Z on 1990-05-15Temperature 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 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Paducah/Barkley, KY at 12:00Z on 1990-05-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 107 square meters per square second.193958Sfc1 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
0 m above ground
0-6 km bulk shear
28 kt
0-1 km storm-relative helicity
107 m²/s²
0-3 km storm-relative helicity
107 m²/s²
Significant tornado parameter
0.0
Supercell composite
3.1

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
May 15, 4:45 AM CDTFlash Flood WarningLSXWarren4 hr
May 15, 3:31 PM CDTSevere Thunderstorm WarningLSXLincoln44 min
May 15, 4:07 PM CDTSevere Thunderstorm WarningLSXWarren38 min
May 15, 4:16 PM CDTSevere Thunderstorm WarningLSXLincoln, Saint Charles, Warren44 min
May 15, 4:45 PM CDTSevere Thunderstorm WarningLSXSaint Louis, City of Saint Louis45 min
May 15, 4:45 PM CDTSevere Thunderstorm WarningLSXFranklin45 min
May 15, 5:39 PM CDTSevere Thunderstorm WarningLSXJefferson51 min
May 15, 6:07 PM CDTSevere Thunderstorm WarningLSXJefferson53 min

Nearby

Tornado Warnings in Missouri, 1990Every tornado warning in 1990Tornadoes in 1990

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.