Alert archive / Arkansas / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 382, NWS Shreveport, LA

October 31, 1997Columbia County, Arkansas

NWS Shreveport, LA issued this severe thunderstorm warning at Oct 31, 1997, 5:53 AM CST for Columbia County, Arkansas. It was in force for 52 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Oct 31, 1997, 5:53 AM CST (11:53 UTC)
Expired: Oct 31, 1997, 6:45 AM CST
In force: 52 min
Issued by: NWS Shreveport, LA
Area: Whole counties

County Columbia County, AR

The radar

The Shreveport radar (KSHV), 102 km from the middle of the area, began a volume at 11:56 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

Shreveport, LA (KSHV), launched 00:00Z, 11.9 hours before the alert went out and 95 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: 857 J/kg
Mixed-layer CIN: -2 J/kg
Mixed-layer LCL: 694 m above ground
0-6 km bulk shear: 39 kt
0-1 km storm-relative helicity: 77 m²/s²
0-3 km storm-relative helicity: 152 m²/s²
Significant tornado parameter: 0.5
Supercell composite: 3.0

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.

NWS Shreveport, LA wrote its last area forecast discussion before this severe thunderstorm warning went out at Oct 31, 2:32 AM CST, 3 hours 21 minutes earlier.

Area forecast discussion, Oct 31, 2:32 AM CST, 3 hours 21 minutes before

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In the hours before

Local storm report, Oct 31, 1:49 AM CST, 4 hours 4 minutes before

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Local storm report, Oct 31, 1:50 AM CST, 4 hours 3 minutes before

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Local storm report, Oct 31, 2:50 AM CST, 3 hours 3 minutes before

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Local storm report, Oct 31, 2:51 AM CST, 3 hours 2 minutes before

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Local storm report, Oct 31, 5:23 AM CST, 30 minutes before

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Local storm report, Oct 31, 5:24 AM CST, 29 minutes before

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The office that day

Everything else NWS Shreveport, LA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Oct 31, 12:47 AM CST	Severe Thunderstorm Warning	SHV	Panola, Rusk	58 min
Oct 31, 1:46 AM CST	Severe Thunderstorm Warning	SHV	Panola	44 min
Oct 31, 2:10 AM CST	Severe Thunderstorm Warning	SHV	De Soto	50 min
Oct 31, 4:50 AM CST	Severe Thunderstorm Warning	SHV	Hempstead	40 min
Oct 31, 5:47 AM CST	Severe Thunderstorm Warning	SHV	Lafayette	43 min

Nearby

Severe Thunderstorm Warnings in Arkansas, 1997 Every severe thunderstorm warning in 1997

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.