Alert archive / Missouri / Severe Thunderstorm Warnings in 1993

Severe Thunderstorm Warning 128, NWS St. Louis, MO

July 21, 1993Dent County, Missouri

NWS St. Louis, MO issued this severe thunderstorm warning at Jul 21, 1993, 1:56 PM CDT for Dent County, Missouri. It was in force for 49 min.

The area

The counties it named.

The facts

Issued: Jul 21, 1993, 1:56 PM CDT (18:56 UTC)
Expired: Jul 21, 1993, 2:45 PM CDT
In force: 49 min
Issued by: NWS St. Louis, MO
Area: Whole counties

County Dent County, MO

The nearest sounding before it

Springfield, MO (KUMN), launched 12:00Z, 6.9 hours before the alert went out and 218 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: 1315 J/kg
Mixed-layer CIN: -72 J/kg
Mixed-layer LCL: 1115 m above ground
0-6 km bulk shear: 18 kt
0-1 km storm-relative helicity: 91 m²/s²
0-3 km storm-relative helicity: 93 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.5

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, Jul 21, 11:58 AM CDT, 1 hour 58 minutes before

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Special weather statement, Jul 21, 12:53 PM CDT, 1 hour 3 minutes before

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Local storm report, Jul 21, 1:12 PM CDT, 44 minutes before

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Local storm report, Jul 21, 1:15 PM CDT, 41 minutes before

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Special weather statement, Jul 21, 1:37 PM CDT, 19 minutes before

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Special weather statement, Jul 21, 1:39 PM CDT, 17 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
Jul 20, 7:15 PM CDT	Severe Thunderstorm Warning	LSX	Perry	60 min
Jul 20, 7:03 PM CDT	Severe Thunderstorm Warning	LSX	Washington	42 min
Jul 20, 8:16 PM CDT	Tornado Warning	LSX	Perry	38 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.