Alert archive / Louisiana / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 82, NWS Shreveport, LA

March 27, 2000Grant Parish, Winn Parish, Louisiana

NWS Shreveport, LA issued this severe thunderstorm warning at Mar 27, 2000, 12:49 AM CST for Grant Parish, Winn Parish, Louisiana. It was in force for 41 min. 3 reports came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued: Mar 27, 2000, 12:49 AM CST (06:49 UTC)
Expired: Mar 27, 2000, 1:30 AM CST
In force: 41 min
Issued by: NWS Shreveport, LA
Area: Whole counties

Counties Grant Parish, LA, Winn Parish, LA

What was reported inside it

Time	Report	Where
Mar 27, 12:54 AM CST	Hail 1.5	St Maurice, LA
Mar 27, 1:25 AM CST	Hail 0.75	Aloha, LA
Mar 27, 1:30 AM CST	Hail 0.75	Colfax, LA

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, 11:15 PM CST	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Shreveport, LA (KSHV), launched 00:00Z, 6.8 hours before the alert went out and 134 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 270652
SVRSHV
LAC043-127-270730-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SHREVEPORT LA
1249 AM CST MON MAR 27 2000

THE NATIONAL WEATHER SERVICE IN SHREVEPORT HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  GRANT PARISH IN LOUISIANA
  WINN PARISH IN LOUISIANA

* UNTIL 130 AM CST

* AT 1249 AM CST...THE SHREVEPORT NATIONAL WEATHER SERVICE DOPPLER
  RADAR INDICATED A SEVERE THUNDERSTORM 22 MILES WEST OF WINNFIELD...
  OR ABOUT 9 MILES NORTHEAST OF NATCHITOCHES...MOVING SOUTHEAST AT 
  45 MPH.

THIS THUNDERSTORM WILL PRODUCE LARGE HAIL 1 INCH OR LARGER AND 
STRONG DAMAGING WINDS IN EXCESS OF 60 MPH. DO NOT REMAIN 
OUTSIDE...SEEK SHELTER IN A STRONG BUILDING.

REPEATING...THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE
THUNDERSTORM WARNING FOR...
  GRANT PARISH IN LOUISIANA
  WINN PARISH IN LOUISIANA
UNTIL 130 AM CST.

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, 3 hours 59 minutes earlier.

Area forecast discussion, Mar 26, 8:50 PM CST, 3 hours 59 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.

In the hours before

Local storm report, Mar 27, 12:17 AM CST, 32 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SHREVEPORT LA
1217 AM CST MON MAR 27 2000

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

0930 PM    3 NE WASHINGTON           AR   .75 INCH HAIL
03/26/00   HEMPSTEAD                      REPORT FROM EMERGENCY MANAGER

1000 PM    HOPE                      AR   WIND DAMAGE
03/26/00   HEMPSTEAD                      TREES DOWN
                                          REPORT FROM LAW ENFORCEMENT

1015 PM    PATMOS                    AR   WIND DAMAGE
03/26/00   HEMPSTEAD                      TREES DOWN AT PATMOS STATE PARK
                                          REPORT FROM LAW ENFORCEMENT

1025 PM    STAMPS                    AR   .75 INCH HAIL
03/26/00   LAFAYETTE                      REPORT FROM LAW ENFORCEMENT

1047 PM    VIVIAN                    LA   .75 INCH HAIL
03/26/00   CADDO                          REPORT FROM STORM SPOTTER

1100 PM    5 E MAGNOLIA              AR   WIND DAMAGE
03/26/00   COLUMBIA                       TREES DOWN ALONG HIGHWAY 82E
                                          REPORT FROM EMERGENCY MANAGER

1100 PM    MAGNOLIA                  AR   WIND DAMAGE
03/26/00   COLUMBIA                       TREES DOWN ALONG HIGHWAY 82E
                                          IN MAGNOLIA
                                          REPORT FROM EMERGENCY MANAGER

1130 PM    SHREVEPORT                LA   .88 INCH HAIL
03/26/00   CADDO                          NICKEL SIZED HAIL AT THE
                                          IHOP ALONG I-20
                                          REPORT FROM BROADCAST MEDIA

1140 PM    SHREVEPORT                LA   .88 INCH HAIL
03/26/00   CADDO                          NICKEL SIZED HAIL IN SOUTH
                                          SHREVEPORT ALONG COLQUITT
                                          AND MANSFIELD ROADS
                                          REPORT FROM COOPERATIVE OBSERVER

1140 PM    SHREVEPORT                LA   .75 INCH HAIL
03/26/00   CADDO                          DIME SIZED HAIL AT THE NWS OFFICE
                                          REPORT FROM ON-DUTY METEOROLOGISTS

15

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, 10:54 PM CST	Severe Thunderstorm Warning	SHV	Bossier	51 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, 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.