Alert archive / Louisiana / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 103, NWS Shreveport, LA

March 5, 1998Caldwell Parish, Louisiana

NWS Shreveport, LA issued this severe thunderstorm warning at Mar 5, 1998, 8:33 PM CST for Caldwell Parish, Louisiana. It was in force for 47 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: Mar 5, 1998, 8:33 PM CST (02:33 UTC)
Expired: Mar 5, 1998, 9:20 PM CST
In force: 47 min
Issued by: NWS Shreveport, LA
Area: Whole counties

County Caldwell Parish, LA

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Mar 5, 6:45 PM CST	Severe Thunderstorm Watch	SPC	3 hr

The nearest sounding before it

Shreveport, LA (KSHV), launched 00:00Z, 2.6 hours before the alert went out and 159 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: 973 J/kg
Mixed-layer CIN: -7 J/kg
Mixed-layer LCL: 1724 m above ground
0-6 km bulk shear: 48 kt
0-1 km storm-relative helicity: 49 m²/s²
0-3 km storm-relative helicity: 246 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 3.9

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 Mar 5, 7:30 PM CST, 1 hour 3 minutes earlier.

Area forecast discussion, Mar 5, 7:30 PM CST, 1 hour 3 minutes before

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In the hours before

Special weather statement, Mar 5, 6:06 PM CST, 2 hours 27 minutes before

ARZ050-051-059>061-070>073-LAZ001>006-010>014-017>022-OKZ077-TXZ096-
097-108>112-124>126-136>138-151-060100-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SHREVEPORT LA
606 PM CST THU MAR 5 1998

THE SEVERE THUNDERSTORM WATCH THAT WAS ISSUED EARLIER TODAY HAS BEEN
CANCELLED FOR THAT AREA WEST OF A LINE FROM SHREVEPORT LOUISIANA TO
MAGNOLIA ARKANSAS. THE WATCH REMAINS IN EFFECT UNTIL 700 PM EAST OF
THAT LINE. THE SHREVEPORT AND MAGNOLIA AREAS REMAIN IN THE SEVERE
THUNDERSTORM WATCH...AS WELL AS THE MONROE LOUISIANA AREA.

03

Local storm report, Mar 5, 7:57 PM CST, 36 minutes before

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Local storm report, Mar 5, 8:00 PM CST, 33 minutes before

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Local storm report, Mar 5, 8:00 PM CST, 33 minutes before

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Special weather statement, Mar 5, 8:10 PM CST, 23 minutes before

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Special weather statement, Mar 5, 8:10 PM CST, 23 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
Mar 5, 6:00 PM CST	Severe Thunderstorm Warning	SHV	Claiborne	55 min
Mar 5, 6:43 PM CST	Severe Thunderstorm Warning	SHV	Union	62 min
Mar 5, 7:06 PM CST	Severe Thunderstorm Warning	SHV	Lincoln	49 min
Mar 5, 7:31 PM CST	Severe Thunderstorm Warning	SHV	Ouachita	64 min

Nearby

Severe Thunderstorm Warnings in Louisiana, 1998 Every severe thunderstorm warning in 1998

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.