Alert archive / Louisiana / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 122, NWS Shreveport, LA

April 2, 2000Jackson Parish, Lincoln Parish, Louisiana

NWS Shreveport, LA issued this severe thunderstorm warning at Apr 2, 2000, 4:31 AM CDT for Jackson Parish, Lincoln Parish, Louisiana. It was in force for 44 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 2, 2000, 4:31 AM CDT (09:31 UTC)
Expired: Apr 2, 2000, 5:15 AM CDT
In force: 44 min
Issued by: NWS Shreveport, LA
Area: Whole counties

Counties Jackson Parish, LA, Lincoln Parish, LA

The radar

The Shreveport radar (KSHV), 115 km from the middle of the area, began a volume at 09:34 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 watch it was issued in

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

Issued	Product	Office	Lasted
Apr 2, 4:00 AM CDT	Severe Thunderstorm Watch	SPC	4 hr

The nearest sounding before it

Shreveport, LA (KSHV), launched 00:00Z, 9.5 hours before the alert went out and 107 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: 330 J/kg
Mixed-layer CIN: -110 J/kg
Mixed-layer LCL: 439 m above ground
0-6 km bulk shear: 57 kt
0-1 km storm-relative helicity: 467 m²/s²
0-3 km storm-relative helicity: 481 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 16.0

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 Apr 2, 3:40 AM CDT, 51 minutes earlier.

Area forecast discussion, Apr 2, 3:40 AM CDT, 51 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SHREVEPORT LA
300 AM CDT CST SUN 2 2000

SURFACE ANALYSIS THIS MORNING INDICATED A SURFACE STATIONARY FRONTAL
BOUNDARY FROM SOUTHWEST ARKANSAS INTO NORTHEAST TEXAS AND ON INTO
SOUTH TEXAS. A DEVELOPING WARM FRONT BRANCHES OFF THIS COLD FRONT OVER
CENTRAL LOUISIANA INTO MISSISSIPPI. THE STATIONARY FRONT WILL REMAIN
OVER THE FORECAST AREA DURING THE DAY TODAY AND WASH OUT DURING THE
NIGHT. ANOTHER STRONGER COLD FRONT OFF TO THE NORTHWEST ACROSS THE
NORTHERN ROCKIES WILL SPREAD RAPIDLY SOUTH AND INTO THE NORTHWEST
SECTIONS OF THE COUNTY WARNING/FORECAST LATE TONIGHT AND PUSH ACROSS
THE REGION DURING THE DAY MONDAY. DUE TO THE STRENGTH OF THE UPPER
SYSTEM PUSHING THIS SYSTEM...THE SECOND FRONT WILL MOVE TO NEAR THE
GULF COAST AND INTO THE SOUTHEAST STATES BY LATE MONDAY NIGHT AND
EARLY TUESDAY MORNING.

THE ATMOSPHERE REMAINS VERY MOIST AND UNSTABLE OVER MUCH OF NORTHEAST
TEXAS AND ACROSS NORTH LOUISIANA AND INTO SOUTH ARKANSAS ALONG AND
AHEAD OF THE NORTHWEST TO SOUTHEAST ORIENTATED STATIONARY FRONT AND
WARM FRONT THAT BRANCHES OFF TO THE EAST. MODELS ALL SHOW UPPER JET
CONTINUING TO SCREAM ACROSS THE FORECAST AREA WITH DEEP TROPICAL
CONNECTION WITH SEVERAL SHORT WAVES MOVING THROUGH THE MID LEVEL
FLOW. EACH UPPER DISTURBANCE WILL INITIATE ADDITIONAL SHOWERS
AND THUNDERSTORMS. DUE TO THE RICH THETHA E AIR IN PLACE AND HIGH
PRECIPITABLE WATER VALUES FROM ONE TO NEAR TWO INCHES...RAINFALL

AMOUTS WILL BE HEAVY AT TIMES WITH SOME THUNDERSTORMS PROUCING
UP TO TWO INCHES. WITH UPSTREAM THUNDERSTORMS EXPECTED TO FOLLOW
PREVIOUS THUNDERSTORMS ADDITIONAL AMOUNTS OF ONE TO NEAR THREE
INCHES WILL BE POSSIBLE BY LATE TONIGHT. WILL ISSUE A FLASH FLOOD
WATCH FOR THE SOUTHERN SECTIONS OF NORTHEAST TEXAS ZONES AND FOR ALL
THE NORTH LOUISIANA ZONES AND EXTREME SOUTH ARKANSAS. WATCH WILL
BE ALONG AND SOUTH OF A RUSK TO TIMPSON TEXAS AND SHREVEPORT
LOUISIANA TO MAGNOLIA ARKANSAS LINE.

WITH RAIN AND THUNDERSTORMS AROUND AND THICK CLOUD COVER WILL GO LOWER
THAN NGM MOS TEMPERATURE GUIDANCE AND MORE TOWARD THE AVN NUMBERS.

06

PRELIMS SUBJECT TO CHANGE BY ZONE ISSUANCE...

SHV 68/58/65/41 +885
MLU 71/60/69/44 +887
TXK 68/54/64/38 7684
TYR 68/57/65/39 8865
LFK 73/60/69/42 +986

.SHV...
LA...FLASH FLOOD WATCH TODAY AND TONIGHT FOR ALL OF NORTH LA ZONES
LAZ001>006-010>014-017>022.@
AR...FLASH FLOOD WATCH TODAY AND TONIGHT FOR ARZ072-073.
TX...FLASH FLOOD WATCH TODAY AND TONIGHT FOR TXZ149>153-165>167.

In the hours before

Local storm report, Apr 2, 3:17 AM CDT, 1 hour 14 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SHREVEPORT LA
317 AM CDT SUN APR 02 2000

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

0108 AM    HUNTINGTON                TX   .75 INCH HAIL
04/02/00   ANGELINA                       HAIL THE SIZE OF DIMES
                                          FROM LAW ENFORCEMENT

0154 AM    NEUVILLE                  TX   1 INCH HAIL
04/02/00   SHELBY                         FROM LAW ENFORCEMENT

NNNN

Local storm report, Apr 2, 4:10 AM CDT, 21 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SHREVEPORT LA
410 AM CDT SUN APR 02 2000

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

0338 AM    RUSTON                    LA   .75 INCH HAIL
04/02/00   LINCOLN                        HAIL THE SIZE OF DIMES
                                          FROM LAW ENFORCEMENT

NNNN

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 1, 7:50 PM CST	Severe Thunderstorm Warning	SHV	De Soto	55 min
Apr 1, 8:11 PM CST	Severe Thunderstorm Warning	SHV	Bienville	64 min
Apr 2, 3:30 AM CDT	Severe Thunderstorm Warning	SHV	Red River	45 min
Apr 2, 3:39 AM CDT	Severe Thunderstorm Warning	SHV	Bienville	66 min
Apr 2, 4:00 PM CDT	Severe Thunderstorm Warning	SHV	Jackson	45 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.