Alert archive / Louisiana / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 78, NWS Shreveport, LA

March 26, 2000Bossier Parish, Louisiana

NWS Shreveport, LA issued this severe thunderstorm warning at Mar 26, 2000, 10:54 PM CST for Bossier Parish, Louisiana. It was in force for 51 min. 2 reports came from inside the area while it was in force.

The area

The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties, with what was reported inside it.

The facts

Issued: Mar 26, 2000, 10:54 PM CST (04:54 UTC)
Expired: Mar 26, 2000, 11:45 PM CST
In force: 51 min
Issued by: NWS Shreveport, LA
Area: Whole counties; the outline is the Mesonet’s reconstruction

County Bossier Parish, LA

The radar

The Shreveport radar (KSHV), 43 km from the middle of the area, began a volume at 04:53 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.

What was reported inside it

Time	Report	Where	Remark
Mar 26, 11:30 PM CST	Thunderstorm Wind 57 E	Plain Dealing, LA	Numerous trees down including one on a house along Hwy 2.
Mar 26, 11:30 PM CST	Thunderstorm Wind 57 E	Bellevue, LA	Numerous trees down.

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

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 26, 10:30 PM CST	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Shreveport, LA (KSHV), launched 00:00Z, 4.9 hours before the alert went out and 37 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: 288 J/kg
Mixed-layer CIN: -37 J/kg
Mixed-layer LCL: 1675 m above ground
0-6 km bulk shear: 49 kt
0-1 km storm-relative helicity: 46 m²/s²
0-3 km storm-relative helicity: 203 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 4.3

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WUUS54 KSHV 270456
SVRSHV
LAC015-270545-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SHREVEPORT LA
1054 PM CST SUN MAR 26 2000

THE NATIONAL WEATHER SERVICE IN SHREVEPORT HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  BOSSIER PARISH IN LOUISIANA

* UNTIL 1145 PM CST

* AT 1054 PM CST...THE SHREVEPORT NATIONAL WEATHER SERVICE DOPPLER
  RADAR INDICATED A LINE OF SEVERE THUNDERSTORMS ACROSS NORTHERN
  CADDO PARISH...MOVING SOUTHEAST AT 45 MPH.

THIS THUNDERSTORM WILL PRODUCE LARGE HAIL OF 1 TO 2 INCHES IN 
DIAMETER AND STRONG DAMAGING WINDS IN EXCESS OF 70 MPH. DO NOT REMAIN 
OUTSIDE...THIS IS A DANGEROUS WEATHER SITUATION.

REPEATING...THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE
THUNDERSTORM WARNING FOR...
  BOSSIER PARISH IN LOUISIANA
UNTIL 1145 PM CST.

LAT...LON 3302 9377 3284 9378 3266 9377 3239 9344
          3273 9347 3294 9351

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 26, 8:50 PM CST, 2 hours 4 minutes earlier.

Area forecast discussion, Mar 26, 8:50 PM CST, 2 hours 4 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SHREVEPORT LA
850 PM CST SUN MAR 26 2000

UPDATING ZONES FOR SEVERE THUNDERSTORM WATCHES AND TO FINE TUNE
PRECIPITATION AREA AND EXPECTED DEVELOPMENT THROUGH THE NIGHT. MAJOR
AREA OF CONCERN IS DEVELOPMENT ON WEST SIDE OF LARGE COMPLEX OF
SHOWERS AND THUNDERSTORMS MOVING THROUGH SOUTHERN OKLAHOMA AND
CENTRAL AND SOUTHERN ARKANSAS. SUPERCELL IS NOW MOVING THROUGH RED
RIVER COUNTY TEXAS. COLD FRONT IS MOVING SOUTHEAST OVER NORTH
CENTRAL AND NORTHEAST OKLAHOMA. ADDITIONAL SHOWERS AND THUNDERSTORMS
ARE LIKELY TO DEVELOP OVER NORTHEAST TEXAS AND NORTH LOUISIANA SOUTH
AND SOUTHEAST OF CURRENT ACTIVITY AND BECOME A SQUALL LINE AS IT
DROPS SOUTHEAST THROUGH NORTH LOUISIANA.  09

.SHV...NONE.

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 26, 10:23 PM CST	Severe Thunderstorm Warning	SHV	Caddo	67 min
Mar 26, 10:57 PM CST	Severe Thunderstorm Warning	SHV	Claiborne, Lincoln, Union, Webster	48 min
Mar 26, 11:28 PM CST	Severe Thunderstorm Warning	SHV	Caddo, De Soto, Red River	47 min
Mar 27, 12:14 AM CST	Severe Thunderstorm Warning	SHV	De Soto, Natchitoches, Red River	46 min
Mar 27, 12:49 AM CST	Severe Thunderstorm Warning	SHV	Grant, Winn	41 min
Mar 27, 1:05 AM CST	Severe Thunderstorm Warning	SHV	Caldwell, LaSalle	40 min
Mar 27, 1:26 AM CST	Severe Thunderstorm Warning	SHV	Grant	34 min
Mar 27, 1:39 AM CST	Severe Thunderstorm Warning	SHV	LaSalle	51 min

Nearby

Severe Thunderstorm Warnings in Louisiana, 2000 Every severe thunderstorm warning in 2000

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.