Alert archive / Louisiana / Severe Thunderstorm Warnings in 2008

Severe Thunderstorm Warning 276, NWS Shreveport, LA

May 2, 2008Bienville Parish, Jackson Parish, Winn Parish, Louisiana

NWS Shreveport, LA issued this severe thunderstorm warning at May 2, 2008, 11:01 PM CDT for Bienville Parish, Jackson Parish, Winn Parish, Louisiana. It was in force for 59 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, 11:01 PM CDT (04:01 UTC)
Expired: May 3, 2008, 12:00 AM CDT
In force: 59 min
Issued by: NWS Shreveport, LA
Area: Storm-based polygon

Counties Bienville Parish, LA, Jackson Parish, LA, Winn Parish, LA

The radar

The Shreveport radar (KSHV), 106 km from the middle of the area, began a volume at 04:04 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
May 2, 5:18 PM CDT	Tornado Watch	SPC	6 hr

The nearest sounding before it

Shreveport, LA (KSHV), launched 00:00Z, 4.0 hours before the alert went out and 99 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, 10:09 PM CDT, 52 minutes earlier.

Area forecast discussion, May 2, 10:09 PM CDT, 52 minutes before

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Hazardous weather outlook, May 2, 4:59 PM CDT, 6 hours 2 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, 9:48 PM CDT, 1 hour 13 minutes before

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Local storm report, May 2, 9:58 PM CDT, 1 hour 3 minutes before

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

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

0953 PM     HAIL             GIBSLAND                32.54N 93.05W
05/02/2008  M1.75 INCH       BIENVILLE          LA   PUBLIC

            JUST OFF HWY 80

&&

STEVENS

Local storm report, May 2, 10:05 PM CDT, 56 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SHREVEPORT LA
1005 PM CDT FRI MAY 02 2008

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

1002 PM     HAIL             LOGANSPORT              31.97N 93.99W
05/02/2008  M0.88 INCH       DESOTO             LA   PUBLIC

&&

STEVENS

Local storm report, May 2, 10:18 PM CDT, 43 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SHREVEPORT LA
1018 PM CDT FRI MAY 02 2008

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

1010 PM     HAIL             6 NW CHATHAM            32.37N 92.52W
05/02/2008  M0.75 INCH       JACKSON            LA   PUBLIC

            ALONG HWY 146.

&&

STEVENS

Local storm report, May 2, 10:38 PM CDT, 23 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SHREVEPORT LA
1038 PM CDT FRI MAY 02 2008

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

1035 PM     HAIL             5 SE BRONSON            31.29N 93.95W
05/02/2008  M0.75 INCH       SABINE             TX   PUBLIC

            ON HWY 184.

&&

STEVENS

Local storm report, May 2, 10:53 PM CDT, 8 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SHREVEPORT LA
1053 PM CDT FRI MAY 02 2008

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

1040 PM     HAIL             8 S HAUGHTON            32.41N 93.51W
05/02/2008  M1.00 INCH       BOSSIER            LA   LAW ENFORCEMENT

&&

STEVENS

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, 7:57 PM CDT	Severe Thunderstorm Warning	SHV	Angelina, San Augustine	48 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, 11:21 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 Louisiana, 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.