Alert archive / Texas / Severe Thunderstorm Warnings in 2008

Severe Thunderstorm Warning 259, NWS Shreveport, LA

May 2, 2008Angelina County, San Augustine County, Texas

NWS Shreveport, LA issued this severe thunderstorm warning at May 2, 2008, 7:57 PM CDT for Angelina County, San Augustine County, Texas. It was in force for 48 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: May 2, 2008, 7:57 PM CDT (00:57 UTC)
Expired: May 2, 2008, 8:45 PM CDT
In force: 48 min
Issued by: NWS Shreveport, LA
Area: Storm-based polygon

Counties Angelina County, TX, San Augustine County, TX

The radar

The Shreveport radar (KSHV), 136 km from the middle of the area, began a volume at 01:01 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, 1.0 hours before the alert went out and 142 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: 1804 J/kg
Mixed-layer CIN: -73 J/kg
Mixed-layer LCL: 891 m above ground
0-6 km bulk shear: 46 kt
0-1 km storm-relative helicity: 134 m²/s²
0-3 km storm-relative helicity: 234 m²/s²
Significant tornado parameter: 1.8
Supercell composite: 12.6

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 May 2, 5:40 PM CDT, 2 hours 17 minutes earlier.

Area forecast discussion, May 2, 5:40 PM CDT, 2 hours 17 minutes before

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Hazardous weather outlook, May 2, 4:59 PM CDT, 2 hours 58 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE SHREVEPORT LA
459 PM CDT FRI MAY 2 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>167-031100-
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-
459 PM CDT FRI MAY 2 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...

THERE IS A SLIGHT RISK FOR SEVERE THUNDERSTORMS THROUGH THE EVENING
AND OVERNIGHT FOR PARTS OF SOUTHWEST AND SOUTH CENTRAL ARKANSAS...
NORTHWEST AND NORTH CENTRAL LOUISIANA...AND THE LOWER THIRD OF
NORTHEAST TEXAS. THIS WILL BE GENERALLY ALONG AND TO THE SOUTHEAST OF
A MAGNOLIA ARKANSAS...TO SHREVEPORT LOUISIANA...AND MARSHALL...
HENDERSON...AND RUSK TEXAS LINE. A COLD MOVING ACROSS SOUTHWEST
ARKANSAS...NORTHWEST LOUISIANA...AND EAST TEXAS WILL CONTINUE TO HELP
PRODUCE SHOWERS AND STRONG TO SEVERE THUNDERSTORMS. THE STORMS WILL
BE CAPABLE OF PRODUCING LARGE HAIL FROM NEAR THREE QUARTERS OF AN
INCH TO NEAR A QUARTER COIN SIZE...GUSTY WINDS OF 35 TO 60 MPH...AND
BRIEF BUT LOCALLY HEAVY RAINFALL WITH RATES OF ONE HALF TO NEAR ONE
AND ONE HALF INCHES PER HOUR. ALTHOUGH THE CHANCE FOR TORNADOES HAS
DECREASED THERE WILL BE DISCRETE STORMS CAPABLE OF PRODUCING
TORNADOES.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY...

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

STORM SPOTTER...HAM RADIO OPERATOR...AND EMERGENCY MANAGEMENT
PERSONNEL ACTIVATION MAY BE NEEDED THROUGH THE EVENING...FOR
SOUTHWEST AND SOUTH CENTRAL ARKANSAS...PARTS OF NORTHWEST AND
NORTH CENTRAL LOUISIANA...AND THE LOWER THIRD OF NORTHEAST
TEXAS.

06

In the hours before

Local storm report, May 2, 2:53 PM CDT, 5 hours 4 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SHREVEPORT LA
253 PM CDT FRI MAY 02 2008

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

0246 PM     HAIL             6 SW SHREVEPORT         32.41N 93.87W
05/02/2008  E0.75 INCH       CADDO              LA   NWS EMPLOYEE

0250 PM     HAIL             CENTER                  31.79N 94.18W
05/02/2008  E0.88 INCH       SHELBY             TX   LAW ENFORCEMENT

&&

03

Local storm report, May 2, 3:03 PM CDT, 4 hours 54 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SHREVEPORT LA
303 PM CDT FRI MAY 02 2008

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

0302 PM     HAIL             CENTER                  31.79N 94.18W
05/02/2008  E1.00 INCH       SHELBY             TX   PUBLIC

            QUARTER SIZE HAIL...A FEW A LARGE AS HALF DOLLARS.

&&

03

Local storm report, May 2, 3:14 PM CDT, 4 hours 43 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SHREVEPORT LA
314 PM CDT FRI MAY 02 2008

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

0314 PM     HAIL             CENTER                  31.79N 94.18W
05/02/2008  E2.50 INCH       SHELBY             TX   PUBLIC

&&

03

Local storm report, May 2, 3:21 PM CDT, 4 hours 36 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SHREVEPORT LA
321 PM CDT FRI MAY 02 2008

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

0315 PM     HAIL             GRAND CANE              32.08N 93.81W
05/02/2008  E0.75 INCH       DE SOTO            LA   POST OFFICE

&&

03

Local storm report, May 2, 5:08 PM CDT, 2 hours 49 minutes before

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Local storm report, May 2, 5:10 PM CDT, 2 hours 47 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
May 2, 7:21 PM CDT	Severe Thunderstorm Warning	SHV	Angelina	39 min
May 2, 9:11 PM CDT	Severe Thunderstorm Warning	SHV	Shelby	49 min
May 2, 9:52 PM CDT	Severe Thunderstorm Warning	SHV	Shelby	38 min
May 2, 10:30 PM CDT	Severe Thunderstorm Warning	SHV	Sabine	45 min
May 2, 7:14 PM CDT	Severe Thunderstorm Warning	SHV	Ouachita	31 min
May 2, 7:33 PM CDT	Severe Thunderstorm Warning	SHV	Lincoln, Union	57 min
May 2, 7:44 PM CDT	Severe Thunderstorm Warning	SHV	Bossier, Webster	61 min
May 2, 7:50 PM CDT	Severe Thunderstorm Warning	SHV	Bienville, Jackson	55 min
May 2, 8:20 PM CDT	Severe Thunderstorm Warning	SHV	Claiborne	55 min
May 2, 8:38 PM CDT	Severe Thunderstorm Warning	SHV	Jackson, Lincoln, Ouachita	67 min
May 2, 8:47 PM CDT	Severe Thunderstorm Warning	SHV	Bienville, Jackson	43 min
May 2, 9:14 PM CDT	Severe Thunderstorm Warning	SHV	Claiborne, Union, Webster	31 min
May 2, 9:25 PM CDT	Severe Thunderstorm Warning	SHV	Lincoln, Union	65 min
May 2, 9:33 PM CDT	Severe Thunderstorm Warning	SHV	Bienville, Claiborne, Lincoln, Webster	57 min
May 2, 9:41 PM CDT	Severe Thunderstorm Warning	SHV	Jackson, Lincoln, Ouachita, Union	64 min
May 2, 9:46 PM CDT	Severe Thunderstorm Warning	SHV	Jackson, Ouachita	59 min
May 2, 9:54 PM CDT	Severe Thunderstorm Warning	SHV	Claiborne, Union	66 min
May 2, 10:27 PM CDT	Severe Thunderstorm Warning	SHV	Bossier, Caddo, De Soto	34 min
May 2, 10:30 PM CDT	Severe Thunderstorm Warning	SHV	Union	37 min
May 2, 10:44 PM CDT	Severe Thunderstorm Warning	SHV	Ouachita	61 min
May 2, 11:01 PM CDT	Severe Thunderstorm Warning	SHV	Bienville, Jackson, Winn	59 min
May 2, 11:21 PM CDT	Severe Thunderstorm Warning	SHV	Natchitoches, Winn	54 min
May 2, 11:32 PM CDT	Severe Thunderstorm Warning	SHV	Sabine	43 min
May 3, 12:56 AM CDT	Severe Thunderstorm Warning	SHV	Caldwell, Grant, LaSalle, Winn	64 min
May 3, 2:06 AM CDT	Severe Thunderstorm Warning	SHV	LaSalle	39 min
May 2, 9:20 PM CDT	Severe Thunderstorm Warning	SHV	Union	40 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.