Alert archive / Texas / Severe Thunderstorm Warnings in 2008

Severe Thunderstorm Warning 129, NWS Shreveport, LA

March 29, 2008Harrison County, Marion County, Texas

NWS Shreveport, LA issued this severe thunderstorm warning at Mar 29, 2008, 10:04 PM CDT for Harrison County, Marion County, Texas. It was in force for 26 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: Mar 29, 2008, 10:04 PM CDT (03:04 UTC)
Expired: Mar 29, 2008, 10:30 PM CDT
In force: 26 min
Issued by: NWS Shreveport, LA
Area: Storm-based polygon

Counties Harrison County, TX, Marion County, TX

The radar

The Shreveport radar (KSHV), 55 km from the middle of the area, began a volume at 03:07 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 nearest sounding before it

Shreveport, LA (KSHV), launched 00:00Z, 3.1 hours before the alert went out and 61 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: 1009 J/kg
Mixed-layer CIN: -33 J/kg
Mixed-layer LCL: 1126 m above ground
0-6 km bulk shear: 34 kt
0-1 km storm-relative helicity: 88 m²/s²
0-3 km storm-relative helicity: 217 m²/s²
Significant tornado parameter: 0.8
Supercell composite: 6.2

Open this sounding in Storm Lab

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 29, 9:38 PM CDT, 26 minutes earlier.

Area forecast discussion, Mar 29, 9:38 PM CDT, 26 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SHREVEPORT LA
938 PM CDT SAT MAR 29 2008

.DISCUSSION...
DEEP CONVECTION MOVED INTO EAST TX DURING THE EVENING. WARM FRONT
EAST TO WEST...JUST NORTH OF INTERSTATE 20. CONVECTION MAY JUMP
OVER WARM FRONT WITH DECENT 850 SOUTH FLOW 25 TO 30 KTS...BUT WITH
MUCH LESS INSTABILITY CONVECTION WILL WEAKEN. COOL AIR NORTH OF
FRONT NEARING DEWPOINTS. THUS...WILL GO SCATTERED SHOWERS...WITH
ISOLATED TSTMS...AND PATCHY FOG...NORTH OF FRONT AFTER MIDNIGHT.
SOUTH OF FRONT...SCATTERED SHOWERS AND THUNDERSTORMS. MADE SEVERAL
OTHER ADJUSTMENTS TO GRIDS...INCLUDING TEMPERATURES. /VII/

&&

.AVIATION...
TSTMS NE TX...NW LA...EXTREME SW AR NEXT FEW HOURS. LOW
CIGS...VIS...ADN STG WINDS PSBL AT TYR...GGG...SHV SITES.
PATCHY FOG MAY DEVELOP NORTH OF WARM FRONT...MAINLY TXK...ELD
SITES.

&&

.PRELIMINARY POINT TEMPS/POPS...
SHV  65  79  63  78 /  40  30  20  60
MLU  66  81  61  81 /  30  30  20  40
DEQ  51  78  61  73 /  30  30  20  70
TXK  56  79  63  77 /  30  30  20  70
ELD  57  82  61  79 /  30  30  20  60
TYR  63  78  66  76 /  40  30  20  70
GGG  65  78  64  76 /  40  30  20  70
LFK  68  78  66  78 /  40  30  20  50

&&

.SHV WATCHES/WARNINGS/ADVISORIES...
AR...NONE.
LA...NONE.
OK...NONE.
TX...NONE.
&&

Hazardous weather outlook, Mar 29, 7:14 PM CDT, 2 hours 50 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE SHREVEPORT LA
714 PM CDT SAT MAR 29 2008

ARZ050-051-059>061-070>073-LAZ001>006-010>014-017>022-OKZ077-TXZ096-
097-108>112-124>126-136>138-149>153-165>167-301100-
ANGELINA-BIENVILLE-BOSSIER-BOWIE-CADDO-CALDWELL-CAMP-CASS-CHEROKEE-
CLAIBORNE-COLUMBIA-DE SOTO-FRANKLIN-GRANT-GREGG-HARRISON-HEMPSTEAD-
HOWARD-JACKSON-LA SALLE-LAFAYETTE-LINCOLN-LITTLE RIVER-MARION-
MCCURTAIN-MILLER-MORRIS-NACOGDOCHES-NATCHITOCHES-NEVADA-OUACHITA-
PANOLA-RED RIVER LA-RED RIVER TX-RUSK-SABINE LA-SABINE TX-
SAN AUGUSTINE-SEVIER-SHELBY-SMITH-TITUS-UNION AR-UNION LA-UPSHUR-
WEBSTER-WINN-WOOD-
714 PM CDT SAT MAR 29 2008

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTH CENTRAL
ARKANSAS...SOUTHWEST ARKANSAS...NORTH CENTRAL LOUISIANA...
NORTHWEST LOUISIANA...SOUTHEAST OKLAHOMA...EAST TEXAS AND
NORTHEAST TEXAS.

.DAY ONE...TONIGHT

A FRONTAL BOUNDARY...JUST SOUTH OF INTERSTATE 20...WILL PROVIDE A
FOCUS FOR RENEWED SHOWER AND THUNDERSTORM DEVELOPMENT OVERNIGHT.
AN AREA OF ONGOING STRONG TO SEVERE THUNDERSTORMS...WILL MOVE INTO
PORTIONS OF NORTHEAST TEXAS...SOUTH OF INTERSTATE 20...BY AROUND
SUNSET...AND SPREAD NORTHEASTWARD INTO NORTHERN LOUISIANA...BY
AROUND MIDNIGHT. LARGE HAIL AND STRONG DAMAGING WINDS ARE POSSIBLE IN
THE STRONGEST STORMS...MAINLY IN EAST TEXAS.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY...

SCATTERED THUNDERSTORMS WILL REMAIN POSSIBLE ACROSS THE REGION
SUNDAY. HOWEVER...SCATTERED TO NUMEROUS THUNDERSTORMS WILL DEVELOP
ACROSS NORTHCENTRAL TEXAS AND EASTERN OKLAHOMA BY MIDDAY MONDAY...
AHEAD OF A STRONG UPPER LEVEL DISTURBANCE THAT WILL RAPIDLY MOVE
EAST ACROSS THE SOUTHERN PLAINS. THESE STORMS ARE EXPECTED TO
ORGANIZE INTO A SQUALL LINE MONDAY AFTERNOON AS THEY ENTER
SOUTHEAST OKLAHOMA AND NORTHEAST TEXAS...AND WILL AFFECT THE
REMAINDER OF THE REGION MONDAY NIGHT. SOME STORMS MAY BECOME
BECOME SEVERE...WITH LARGE HAIL...DAMAGING WINDS...AND ISOLATED
TORNADOES POSSIBLE. THE STORMS ARE EXPECTED TO EXIT THE REGION
EARLY TUESDAY MORNING...THUS ENDING THE SEVERE WEATHER THREAT.

ANOTHER STRONG UPPER LEVEL DISTURBANCE WILL TRAVERSE THE SOUTHERN
PLAINS THURSDAY...WHICH COULD BRING ANOTHER THREAT OF THUNDERSTORMS
TO THE REGION THURSDAY AFTERNOON AND NIGHT.

.SPOTTER INFORMATION STATEMENT...

SKYWARN SPOTTER...HAM RADIO OPERATOR...AND EMERGENCY MANAGEMENT
PERSONNEL ACTIVATION...IS NOT ANTICIPATED AT THIS TIME.

VII

In the hours before

Local storm report, Mar 29, 8:06 PM CDT, 1 hour 58 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SHREVEPORT LA
806 PM CDT SAT MAR 29 2008

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0805 PM     HAIL             4 S JACKSONVILLE        31.91N 95.26W
03/29/2008  E1.25 INCH       CHEROKEE           TX   TRAINED SPOTTER

            BETWEEN JACKSONVILLE AND RUSK

&&

12

Local storm report, Mar 29, 8:14 PM CDT, 1 hour 50 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SHREVEPORT LA
814 PM CDT SAT MAR 29 2008

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0752 PM     HAIL             RUSK                    31.80N 95.15W
03/29/2008  E0.75 INCH       CHEROKEE           TX   LAW ENFORCEMENT

            ALSO ESTIMATED 50 MPH WINDS OCCURRING

&&

12

Local storm report, Mar 29, 8:52 PM CDT, 1 hour 12 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SHREVEPORT LA
852 PM CDT SAT MAR 29 2008

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0843 PM     TSTM WND DMG     NEW LONDON              32.27N 94.93W
03/29/2008                   RUSK               TX   LAW ENFORCEMENT

            TREES DOWNED

&&

12

Local storm report, Mar 29, 9:19 PM CDT, 45 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SHREVEPORT LA
919 PM CDT SAT MAR 29 2008

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0914 PM     HAIL             KILGORE                 32.39N 94.87W
03/29/2008  E1.75 INCH       GREGG              TX   TRAINED SPOTTER

            REPORTED ON STONE RD.

&&

12

Local storm report, Mar 29, 9:29 PM CDT, 35 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SHREVEPORT LA
929 PM CDT SAT MAR 29 2008

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0927 PM     HAIL             KILGORE                 32.39N 94.87W
03/29/2008  E0.25 INCH       GREGG              TX   TRAINED SPOTTER

            ABOUT ONE INCH OF SMALL HAIL ON GROUND...SMALL LIMBS
            DOWN...POWER OUT

&&

12

Local storm report, Mar 29, 9:31 PM CDT, 33 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SHREVEPORT LA
931 PM CDT SAT MAR 29 2008

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0925 PM     HAIL             LONGVIEW                32.52N 94.76W
03/29/2008  E1.00 INCH       GREGG              TX   OFFICIAL NWS OBS

            FROM RETIRED NWS EMPLOYEE

&&

12

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 29, 7:22 PM CDT	Severe Thunderstorm Warning	SHV	Cherokee	38 min
Mar 29, 7:57 PM CDT	Severe Thunderstorm Warning	SHV	Cherokee, Nacogdoches, Rusk	48 min
Mar 29, 8:03 PM CDT	Severe Thunderstorm Warning	SHV	Cherokee, Smith	57 min
Mar 29, 8:37 PM CDT	Severe Thunderstorm Warning	SHV	Cherokee, Rusk, Smith	38 min
Mar 29, 8:44 PM CDT	Severe Thunderstorm Warning	SHV	Gregg, Rusk, Smith	46 min
Mar 29, 9:10 PM CDT	Severe Thunderstorm Warning	SHV	Gregg, Harrison, Panola, Rusk, Smith, Upshur	65 min
Mar 29, 9:33 PM CDT	Flash Flood Warning	SHV	Gregg, Harrison	3 hr
Mar 29, 10:27 PM CDT	Severe Thunderstorm Warning	SHV	Cass, Marion	33 min
Mar 29, 10:37 PM CDT	Severe Thunderstorm Warning	SHV	Franklin, Titus	23 min
Mar 29, 10:47 PM CDT	Severe Thunderstorm Warning	SHV	Camp, Morris, Titus	28 min
Mar 29, 10:55 PM CDT	Severe Thunderstorm Warning	SHV	Cass	50 min
Mar 29, 11:00 PM CDT	Severe Thunderstorm Warning	SHV	Gregg, Upshur	30 min
Mar 29, 11:03 PM CDT	Severe Thunderstorm Warning	SHV	Bowie, Morris, Red River, Titus	42 min
Mar 29, 11:08 PM CDT	Severe Thunderstorm Warning	SHV	Cass, Morris, Titus	52 min
Mar 29, 11:35 PM CDT	Severe Thunderstorm Warning	SHV	Bowie	40 min
Mar 29, 11:41 PM CDT	Severe Thunderstorm Warning	SHV	Bowie, Cass, Morris	49 min
Mar 30, 12:47 AM CDT	Severe Thunderstorm Warning	SHV	Franklin, Red River	58 min
Mar 30, 1:20 AM CDT	Severe Thunderstorm Warning	SHV	Franklin, Red River, Titus	55 min
Mar 30, 2:31 AM CDT	Severe Thunderstorm Warning	SHV	Franklin, Red River, Titus	44 min
Mar 30, 5:17 AM CDT	Severe Thunderstorm Warning	SHV	Gregg, Harrison, Rusk, Smith	58 min
Mar 30, 5:43 AM CDT	Severe Thunderstorm Warning	SHV	Smith, Upshur, Wood	62 min
Mar 30, 6:04 AM CDT	Severe Thunderstorm Warning	SHV	Camp, Upshur, Wood	56 min
Mar 30, 6:13 AM CDT	Severe Thunderstorm Warning	SHV	Gregg, Harrison, Upshur	62 min
Mar 30, 6:20 AM CDT	Severe Thunderstorm Warning	SHV	Gregg, Smith	55 min
Mar 30, 7:14 AM CDT	Severe Thunderstorm Warning	SHV	Gregg, Harrison	61 min
Mar 30, 7:27 AM CDT	Severe Thunderstorm Warning	SHV	Wood	33 min
Mar 30, 7:58 AM CDT	Severe Thunderstorm Warning	SHV	Harrison, Panola	62 min
Mar 30, 8:33 AM CDT	Severe Thunderstorm Warning	SHV	Sabine, San Augustine, Shelby	57 min
Mar 30, 8:44 AM CDT	Severe Thunderstorm Warning	SHV	Franklin, Red River, Titus	61 min
Mar 30, 8:50 AM CDT	Flash Flood Warning	SHV	Gregg, Harrison, Panola	3 hr
Mar 30, 9:19 AM CDT	Flash Flood Warning	SHV	Sabine, San Augustine, Shelby	4 hr
Mar 30, 10:21 AM CDT	Severe Thunderstorm Warning	SHV	Sabine, San Augustine, Shelby	54 min
Mar 30, 11:03 AM CDT	River Flood Warning	SHV	Gregg, Harrison, Panola, Rusk	11 days
Mar 30, 11:13 AM CDT	Severe Thunderstorm Warning	SHV	Sabine, Shelby	62 min
Mar 30, 11:39 AM CDT	Severe Thunderstorm Warning	SHV	Panola, Shelby	66 min
Mar 30, 11:44 AM CDT	Flash Flood Watch	SHV	Angelina, Bowie, Camp, Cass, Cherokee, Franklin and 15 more	41 hr
Mar 30, 11:48 AM CDT	Flash Flood Warning	SHV	Gregg, Harrison, Marion, Panola, Rusk, Upshur	3 hr
Mar 30, 11:55 AM CDT	Severe Thunderstorm Warning	SHV	Angelina, Nacogdoches, Sabine, San Augustine	50 min
Mar 30, 12:23 PM CDT	Severe Thunderstorm Warning	SHV	Sabine, San Augustine	52 min
Mar 30, 1:21 PM CDT	Flash Flood Warning	SHV	Sabine, Shelby	3 hr
Mar 30, 1:32 PM CDT	Severe Thunderstorm Warning	SHV	Sabine, San Augustine	28 min
Mar 30, 1:44 PM CDT	Severe Thunderstorm Warning	SHV	Cherokee	46 min
Mar 30, 2:00 PM CDT	River Flood Warning	SHV	Sabine, San Augustine	43 hr
Mar 30, 2:12 PM CDT	Severe Thunderstorm Warning	SHV	Sabine, San Augustine, Shelby	48 min
Mar 30, 2:26 PM CDT	Flash Flood Warning	SHV	San Augustine	3 hr
Mar 30, 2:59 PM CDT	Severe Thunderstorm Warning	SHV	Sabine, San Augustine, Shelby	46 min
Mar 30, 3:40 PM CDT	Tornado Warning	SHV	Sabine	35 min
Mar 30, 4:09 PM CDT	Flash Flood Warning	SHV	Sabine, Shelby	2 hr
Mar 30, 4:20 PM CDT	Tornado Warning	SHV	Sabine	40 min
Mar 30, 4:29 PM CDT	Severe Thunderstorm Warning	SHV	Sabine, San Augustine	46 min
Mar 30, 5:18 PM CDT	Severe Thunderstorm Warning	SHV	Sabine	42 min
Mar 30, 5:22 PM CDT	Severe Thunderstorm Warning	SHV	Sabine	38 min
Mar 30, 5:59 PM CDT	Flash Flood Warning	SHV	Sabine	3 hr
Mar 30, 6:27 PM CDT	River Flood Warning	SHV	Nacogdoches, Panola, Rusk, San Augustine, Shelby	67 hr
Mar 30, 4:00 PM CDT	Severe Thunderstorm Warning	SHV	Sabine	45 min
Mar 30, 5:07 PM CDT	Tornado Warning	SHV	Sabine	38 min
Mar 30, 5:26 PM CDT	Tornado Warning	SHV	Sabine	34 min
Mar 30, 5:55 PM CDT	Tornado Warning	SHV	Natchitoches, Sabine	50 min
Mar 30, 6:12 PM CDT	Tornado Warning	SHV	Natchitoches, Winn	48 min
Mar 30, 6:45 PM CDT	Severe Thunderstorm Warning	SHV	Grant, Natchitoches	45 min
Mar 29, 10:42 PM CDT	Severe Thunderstorm Warning	SHV	Little River, Sevier	33 min
Mar 29, 11:56 PM CDT	Severe Thunderstorm Warning	SHV	Howard, Little River, Sevier	49 min
Mar 30, 12:10 AM CDT	Severe Thunderstorm Warning	SHV	Hempstead, Little River, Miller	65 min
Mar 30, 12:57 AM CDT	Severe Thunderstorm Warning	SHV	Sevier	63 min
Mar 30, 1:03 AM CDT	Severe Thunderstorm Warning	SHV	Hempstead, Nevada	57 min
Mar 30, 2:01 AM CDT	Severe Thunderstorm Warning	SHV	Howard, Sevier	59 min

Nearby

Severe Thunderstorm Warnings in Texas, 2008 Every severe thunderstorm warning in 2008

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.