Alert archive / Missouri / Severe Thunderstorm Warnings in 1994

Severe Thunderstorm Warning 105, NWS St. Louis, MO

August 30, 1994Iron County, Washington County, Missouri

NWS St. Louis, MO issued this severe thunderstorm warning at Aug 30, 1994, 5:52 PM CDT for Iron County, Washington County, Missouri. It was in force for 43 min.

The area

The counties it named.

The facts

Issued: Aug 30, 1994, 5:52 PM CDT (22:52 UTC)
Expired: Aug 30, 1994, 6:35 PM CDT
In force: 43 min
Issued by: NWS St. Louis, MO
Area: Whole counties

Counties Iron County, MO, Washington County, MO

The radar

The St Louis radar (KLSX), 108 km from the middle of the area, began a volume at 22:54 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Paducah/Barkley, KY (KPAH), launched 12:00Z, 10.9 hours before the alert went out and 198 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1441 m above ground
0-6 km bulk shear: 22 kt
0-1 km storm-relative helicity: 117 m²/s²
0-3 km storm-relative helicity: 130 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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, Aug 30, 5:05 PM CDT, 47 minutes before

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Special weather statement, Aug 30, 5:08 PM CDT, 44 minutes before

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Special weather statement, Aug 30, 5:14 PM CDT, 38 minutes before

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Special weather statement, Aug 30, 5:16 PM CDT, 36 minutes before

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Special weather statement, Aug 30, 5:40 PM CDT, 12 minutes before

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Special weather statement, Aug 30, 5:42 PM CDT, 10 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
Aug 30, 3:52 PM CDT	Severe Thunderstorm Warning	LSX	Phelps	53 min
Aug 30, 4:13 PM CDT	Severe Thunderstorm Warning	LSX	Crawford, Dent	47 min

Nearby

Severe Thunderstorm Warnings in Missouri, 1994 Every severe thunderstorm warning in 1994

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; radar from the NEXRAD Level II archive.