Alert archive / Louisiana / Severe Thunderstorm Warnings in 1999

Severe Thunderstorm Warning 41, NWS Shreveport, LA

January 22, 1999Claiborne Parish, Louisiana

NWS Shreveport, LA issued this severe thunderstorm warning at Jan 22, 1999, 1:49 AM CST for Claiborne Parish, Louisiana. It was in force for 46 min. 1 report 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: Jan 22, 1999, 1:49 AM CST (07:49 UTC)
Expired: Jan 22, 1999, 2:35 AM CST
In force: 46 min
Issued by: NWS Shreveport, LA
Area: Whole counties

County Claiborne Parish, LA

The radar

The Shreveport radar (KSHV), 89 km from the middle of the area, began a volume at 07:51 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
Jan 22, 1:53 AM CST	Hail 0.75	Homer, 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
Jan 21, 8:30 PM CST	Tornado Watch	SPC	7 hr

The nearest sounding before it

Shreveport, LA (KSHV), launched 00:00Z, 7.8 hours before the alert went out and 80 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: 959 J/kg
Mixed-layer CIN: -14 J/kg
Mixed-layer LCL: 1162 m above ground
0-6 km bulk shear: 47 kt
0-1 km storm-relative helicity: 204 m²/s²
0-3 km storm-relative helicity: 299 m²/s²
Significant tornado parameter: 1.1
Supercell composite: 7.9

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 Jan 21, 8:25 PM CST, 5 hours 24 minutes earlier.

Area forecast discussion, Jan 21, 8:25 PM CST, 5 hours 24 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SHREVEPORT LA
825 PM CST THU JAN 21 1999

EXPECT TSTM COVERAGE TO INCREASE WITH APPROACH OF 150+ KNT JET
STREAK FROM NM.  CURRENT ZONE FCSTS FOR TONIGHT APPEAR FINE WITH
TEMP...SFC WND...AND CLOUD TRENDS.  EXPECT SVR TSTMS TO CONTINUE
DEVELOPING WITH ULTIMATELY A LN OF TSTMS TO DEVELOP WITH LEWPS IN
THE LN PRODUCING WND DAMAGE AND/OR TORNADOES.  VIII.

In the hours before

Local storm report, Jan 21, 10:40 PM CST, 3 hours 9 minutes before

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Local storm report, Jan 22, 12:35 AM CST, 1 hour 14 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SHREVEPORT LA
1235 AM CST FRI JAN 22 1999

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

1052 PM    TYLER                     TX   1.75 INCH HAIL
01/21/99   SMITH                          GOLFBALL SIZED HAIL BROKE
                                          OUT WINDOWS OF CAR.
                                          REPORT FROM SPOTTER.

1056 PM    BULLARD                   TX   50 MPH TSTM GUST
01/21/99   SMITH                          REPORT BY SPOTTER.

1058 PM    1 E TYLER                 TX   .75 INCH HAIL
01/21/99   SMITH                          DIME SIZED HAIL ON EAST
                                          SIDE OF LOOP AROUND TYLER.

1102 PM    TYLER                     TX   .75 INCH HAIL
01/21/99   SMITH                          DIME SIZED HAIL ON THE
                                          NORTH SIDE OF THE LOOP IN
                                          TYLER TEXAS.  REPORT
                                          RELAYED BY SPOTTER.

1110 PM    5 W JACKSONVILLE          TX   60 MPH TSTM GUST
01/21/99   CHEROKEE                       TREES DOWN ACROSS HWY 135.
                                          REPORT FROM S.O.

1110 PM    5 N JACKSONVILLE          TX   60 MPH TSTM GUST
01/21/99   CHEROKEE                       TREES DOWN ACROSS HWY 110
                                          BETWEEN TROUP AND
                                          BLACKJACK.  REPORT RELAYED
                                          BY S.O.

1115 PM    ORE CITY                  TX   .88 INCH HAIL
01/21/99   UPSHUR                         REPORT RELAYED BY SPOTTER.

1122 PM    LIBERTY CITY              TX   .88 INCH HAIL
01/21/99   GREGG                          NICKEL SIZED HAIL AND
                                          STRONG WINDS NEAR LIBERTY
                                          CITY.  REPORT RELAYED BY
                                          SPOTTER.

1130 PM    LONGVIEW                  TX   1 INCH HAIL
01/21/99   GREGG                          QUARTER SIZED HAIL.
                                          REPORT RELAYED BY SPOTTER.

1140 PM    LINDEN                    TX   1.75 INCH HAIL
01/21/99   CASS                           GOLFBALL SIZED HAIL.
                                          REPORT BY S.O.

10

Local storm report, Jan 22, 12:43 AM CST, 1 hour 6 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SHREVEPORT LA
1243 AM CST FRI JAN 22 1999

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

1202 AM    KILGORE                   TX   60 MPH TSTM GUST
01/22/99   GREGG                          TREES AND POWERLINES DOWN.
                                          REPORT FROM SPOTTER.

1219 AM    HOSSTON                   LA   70 MPH TSTM GUST
01/22/99   CADDO                          60 TO 70 MPH WINDS DOWNED
                                          TREES ACROSS US HWY 71.
                                          REPORT FROM SPOTTER.

1220 AM    ATLANTA                   TX   70 MPH TSTM GUST
01/22/99   CASS                           70 MPH WIND PLUS DIME TO
                                          QUARTER SIZED HAIL
                                          REPORTED FROM SPOTTER.

1221 AM    OIL CITY                  LA   .75 INCH HAIL
01/22/99   CADDO                          DIME SIZED HAIL REPORTED
                                          BY SPOTTER.

1223 AM    MOORINGSPORT              LA   1.75 INCH HAIL
01/22/99   CADDO                          GOLFBALL SIZED HAIL
                                          REPORTED BY SPOTTER.

10

Local storm report, Jan 22, 12:48 AM CST, 1 hour 1 minute before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SHREVEPORT LA
1248 AM CST FRI JAN 22 1999

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

1130 AM    LONGVIEW                  TX   59 MPH TSTM GUST
01/21/99   GREGG                          MEASURED BY THE LONGVIEW
                                          AUTOMATED SURFACE OBSERVING
                                          SYSTEM AT THE AIRPORT.

1159 AM    MARSHALL                  TX   65 MPH TSTM GUST
01/21/99   HARRISON                       REPORT FROM SPOTTER.

10

Local storm report, Jan 22, 12:48 AM CST, 1 hour 1 minute before

PRELIMINARY LOCAL STORM REPORT...CORRECTED...
NATIONAL WEATHER SERVICE SHREVEPORT LA
1248 AM CST FRI JAN 22 1999

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

1130 PM    LONGVIEW                  TX   59 MPH TSTM GUST
01/21/99   GREGG                          MEASURED BY THE LONGVIEW
                                          AUTOMATED SURFACE OBSERVING
                                          SYSTEM AT THE AIRPORT.

1159 PM    MARSHALL                  TX   65 MPH TSTM GUST
01/21/99   HARRISON                       REPORT FROM SPOTTER.

10/16

The office that day

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

Issued	Product	Office	Counties	Lasted
Jan 21, 9:38 PM CST	Severe Thunderstorm Warning	SHV	Franklin, Titus	32 min
Jan 21, 10:45 PM CST	Severe Thunderstorm Warning	SHV	Smith	65 min
Jan 21, 10:48 PM CST	Severe Thunderstorm Warning	SHV	Upshur	32 min
Jan 21, 10:52 PM CST	Severe Thunderstorm Warning	SHV	Gregg	63 min
Jan 21, 10:57 PM CST	Severe Thunderstorm Warning	SHV	Cherokee	63 min
Jan 21, 11:07 PM CST	Severe Thunderstorm Warning	SHV	Marion	63 min
Jan 21, 11:16 PM CST	Severe Thunderstorm Warning	SHV	Harrison, Rusk	59 min
Jan 21, 11:22 PM CST	Severe Thunderstorm Warning	SHV	Cass	63 min
Jan 21, 11:56 PM CST	Severe Thunderstorm Warning	SHV	Panola	59 min
Jan 22, 12:09 AM CST	Severe Thunderstorm Warning	SHV	Cherokee	31 min
Jan 22, 2:16 AM CST	Severe Thunderstorm Warning	SHV	Cherokee	49 min
Jan 22, 4:19 AM CST	Severe Thunderstorm Warning	SHV	Nacogdoches	61 min
Jan 22, 5:24 PM CST	Tornado Warning	SHV	Bowie	61 min
Jan 21, 6:33 PM CST	Severe Thunderstorm Warning	SHV	Ouachita	42 min
Jan 21, 8:40 PM CST	Tornado Warning	SHV	LaSalle	50 min
Jan 22, 12:01 AM CST	Severe Thunderstorm Warning	SHV	Caddo	64 min
Jan 22, 12:20 AM CST	Severe Thunderstorm Warning	SHV	Bossier	60 min
Jan 22, 12:38 AM CST	Severe Thunderstorm Warning	SHV	Webster	62 min
Jan 22, 1:38 AM CST	Tornado Warning	SHV	Union	47 min
Jan 22, 4:31 AM CST	Severe Thunderstorm Warning	SHV	Natchitoches	49 min
Jan 22, 4:37 AM CST	Severe Thunderstorm Warning	SHV	Sabine	48 min
Jan 22, 4:46 AM CST	Tornado Warning	SHV	Natchitoches	49 min
Jan 22, 5:01 AM CST	Tornado Warning	SHV	Red River	49 min
Jan 22, 5:10 AM CST	Severe Thunderstorm Warning	SHV	De Soto, Red River	50 min
Jan 22, 5:40 AM CST	Tornado Warning	SHV	Bienville	45 min
Jan 22, 5:44 AM CST	Tornado Warning	SHV	Jackson	46 min
Jan 22, 5:56 AM CST	Severe Thunderstorm Warning	SHV	Lincoln	49 min
Jan 22, 6:10 AM CST	Tornado Warning	SHV	Lincoln	35 min
Jan 22, 6:17 AM CST	Tornado Warning	SHV	Ouachita	48 min
Jan 22, 6:38 AM CST	Severe Thunderstorm Warning	SHV	Union	47 min
Jan 22, 7:22 AM CST	Flash Flood Warning	SHV	Bossier, Caddo, De Soto	4 hr
Jan 22, 7:22 AM CST	Flash Flood Warning	SHV	Webster	4 hr
Jan 22, 11:27 AM CST	Tornado Warning	SHV	Natchitoches	58 min
Jan 22, 11:51 AM CST	Tornado Warning	SHV	Grant	44 min
Jan 21, 8:05 PM CST	Severe Thunderstorm Warning	SHV	Hempstead	45 min
Jan 21, 8:27 PM CST	Tornado Warning	SHV	Hempstead	33 min
Jan 21, 11:59 PM CST	Severe Thunderstorm Warning	SHV	Miller	61 min
Jan 22, 12:34 AM CST	Severe Thunderstorm Warning	SHV	Columbia	61 min
Jan 22, 12:44 AM CST	Severe Thunderstorm Warning	SHV	Hempstead, Nevada	61 min
Jan 22, 2:04 AM CST	Tornado Warning	SHV	Union	46 min
Jan 22, 5:44 PM CST	Tornado Warning	SHV	Little River	61 min
Jan 22, 5:51 PM CST	Tornado Warning	SHV	Howard, Sevier	59 min

Nearby

Severe Thunderstorm Warnings in Louisiana, 1999 Every severe thunderstorm warning in 1999

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.