Alert archive / Missouri / Severe Thunderstorm Warnings in 1993

Severe Thunderstorm Warning 54, NWS St. Louis, MO

June 9, 1993Perry County, Missouri

NWS St. Louis, MO issued this severe thunderstorm warning at Jun 9, 1993, 12:56 PM CDT for Perry County, Missouri. It was in force for 34 min.

The area

The counties it named.

The facts

Issued: Jun 9, 1993, 12:56 PM CDT (17:56 UTC)
Expired: Jun 9, 1993, 1:30 PM CDT
In force: 34 min
Issued by: NWS St. Louis, MO
Area: Whole counties

County Perry County, MO

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 12:00Z, 5.9 hours before the alert went out and 336 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: 1359 J/kg
Mixed-layer CIN: -79 J/kg
Mixed-layer LCL: 1036 m above ground
0-6 km bulk shear: 32 kt
0-1 km storm-relative helicity: 178 m²/s²
0-3 km storm-relative helicity: 160 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.0

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, Jun 9, 10:49 AM CDT, 2 hours 7 minutes before

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Special weather statement, Jun 9, 10:50 AM CDT, 2 hours 6 minutes before

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Special weather statement, Jun 9, 11:52 AM CDT, 1 hour 4 minutes before

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Special weather statement, Jun 9, 11:54 AM CDT, 1 hour 2 minutes before

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Special weather statement, Jun 9, 12:50 PM CDT, 6 minutes before

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Special weather statement, Jun 9, 12:50 PM CDT, 6 minutes before

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The office that day

Everything else NWS St. Louis, MO issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 9, 1:03 AM CDT	Severe Thunderstorm Warning	LSX	Clinton, Madison, Saint Clair	42 min
Jun 9, 1:37 AM CDT	Severe Thunderstorm Warning	LSX	Fayette	53 min
Jun 9, 2:00 AM CDT	Severe Thunderstorm Warning	LSX	Marion	45 min
Jun 9, 2:08 AM CDT	Severe Thunderstorm Warning	LSX	Effingham	52 min

Nearby

Severe Thunderstorm Warnings in Missouri, 1993 Every severe thunderstorm warning in 1993

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.