Alert archive / Louisiana / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 166, NWS Shreveport, LA

April 27, 1998LaSalle Parish, Louisiana

NWS Shreveport, LA issued this severe thunderstorm warning at Apr 27, 1998, 10:00 PM CDT for LaSalle Parish, Louisiana. It was in force for 30 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: Apr 27, 1998, 10:00 PM CDT (03:00 UTC)
Expired: Apr 27, 1998, 10:30 PM CDT
In force: 30 min
Issued by: NWS Shreveport, LA
Area: Whole counties

County LaSalle 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
Apr 27, 9:00 PM CDT	Tornado Watch	SPC	3 hr

The nearest sounding before it

Shreveport, LA (KSHV), launched 00:00Z, 3.0 hours before the alert went out and 174 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: 10 J/kg
Mixed-layer CIN: -228 J/kg
Mixed-layer LCL: 937 m above ground
0-6 km bulk shear: 64 kt
0-1 km storm-relative helicity: -124 m²/s²
0-3 km storm-relative helicity: 179 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.8

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 Apr 27, 8:50 PM CDT, 1 hour 10 minutes earlier.

Area forecast discussion, Apr 27, 8:50 PM CDT, 1 hour 10 minutes before

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In the hours before

Local storm report, Apr 27, 5:01 PM CDT, 4 hours 59 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SHREVEPORT LA
501 PM CDT MON APR 27 1998

TIME(CDT)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....PARISH/COUNTY LOCATION....

0428 PM    LUFKIN                    TX   1.75 INCH HAIL
04/27/98   ANGELINA

0430 PM    FARMERVILLE               LA   .88 INCH HAIL
04/27/98   UNION                          NICKEL SIZE HAIL OCCURRED
                                          5 MI N OF FARMERVILLE LA

Local storm report, Apr 27, 5:01 PM CDT, 4 hours 59 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SHREVEPORT LA
501 PM CDT MON APR 27 1998

TIME(CDT)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....PARISH/COUNTY LOCATION....

0428 PM    LUFKIN                    TX   1.75 INCH HAIL
04/27/98   ANGELINA

0430 PM    FARMERVILLE               LA   .88 INCH HAIL
04/27/98   UNION                          NICKEL SIZE HAIL OCCURRED
                                          5 MI N OF FARMERVILLE LA

Local storm report, Apr 27, 8:08 PM CDT, 1 hour 52 minutes before

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Local storm report, Apr 27, 8:08 PM CDT, 1 hour 52 minutes before

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Local storm report, Apr 27, 9:03 PM CDT, 57 minutes before

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Local storm report, Apr 27, 9:03 PM CDT, 57 minutes before

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  <main class="wrap">
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      <h1 id="headline">This service is currently unavailable.</h1>
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        The site you requested is temporarily down for maintenance or an unexpected outage.
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      <p id="message2">
        Please try again in a few minutes.
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      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
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The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 27, 7:11 PM CDT	Tornado Warning	SHV	Winn	49 min
Apr 27, 7:24 PM CDT	Severe Thunderstorm Warning	SHV	Ouachita	46 min
Apr 27, 7:48 PM CDT	Tornado Warning	SHV	Ouachita	32 min
Apr 27, 8:02 PM CDT	Severe Thunderstorm Warning	SHV	Winn	48 min
Apr 27, 8:24 PM CDT	Severe Thunderstorm Warning	SHV	Ouachita	61 min
Apr 27, 8:41 PM CDT	Severe Thunderstorm Warning	SHV	Grant	49 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.