Alert archive / Louisiana / Severe Thunderstorm Warnings in 2006

Severe Thunderstorm Warning 20, NWS Shreveport, LA

February 3, 2006Caldwell Parish, Louisiana

NWS Shreveport, LA issued this severe thunderstorm warning at Feb 3, 2006, 12:44 PM CST for Caldwell Parish, Louisiana. It was in force for 46 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: Feb 3, 2006, 12:44 PM CST (18:44 UTC)
Expired: Feb 3, 2006, 1:30 PM CST
In force: 46 min
Issued by: NWS Shreveport, LA
Area: Counties, with a storm outline in the text

County Caldwell Parish, LA

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Feb 3, 12:10 PM CST	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Jackson, MS (KJAN), launched 12:00Z, 6.7 hours before the alert went out and 193 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: 20 J/kg
Mixed-layer CIN: -130 J/kg
Mixed-layer LCL: 779 m above ground
0-6 km bulk shear: 51 kt
0-1 km storm-relative helicity: 20 m²/s²
0-3 km storm-relative helicity: 119 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.0

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 Feb 3, 10:00 AM CST, 2 hours 44 minutes earlier.

Area forecast discussion, Feb 3, 10:00 AM CST, 2 hours 44 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SHREVEPORT LA
1000 AM CST FRI FEB 3 2006

.UPDATE...

SURFACE OBSERVATIONS SHOW COLD FRONT IS STILL IN CENTRAL OK AT
15Z...W/OVERCAST SKIES AHEAD OF IT.  12Z KSHV SOUNDING SHOWS AS
MODERATELY UNSTABLE AIRMASS IN PLACE...W/EMBEDDED -TSRA JUST SW OF
KTYR AND STARTING TO FIRE ELSEWHERE.  WILL UPDATE TO MENTION
THIS...AND ADJUST GRIDS TO CURRENT CONDITIONS.

&&

.PREV DISCUSSION... (ISSUED 442 AM CST FRI FEB 3 2006)

DISCUSSION...

A FRONTAL BOUNDARY JUST NORTH OF I30 THIS MORNING WILL MOVE
THROUGH THE AREA TODAY...AS AN ASSOCIATED UPPER LEVEL TROUGH
SWINGS THROUGH THE MISSISSIPPI VALLEY THIS EVENING. UPPER
LEVEL DISTURBANCES MOVING ALONG AND AHEAD OF THIS BOUNDARY WILL
TRY TO SQUEEZE SOME PRECIPITATION OUT OF THE AIRMASS...BUT LIGHT
RAIN AND SHOWERS MAY BE ALL THAT IS GENERATED ACROSS MUCH OF THE
AREA TODAY. MODELS DO SHOW A SURFACE LOW DEVELOPING AROUND WEST
CENTRAL LOUISIANA THIS MORNING...THIS FEATURE IS EXPECTED TO MOVE
NORTHEAST AHEAD OF THE BOUNDARY THIS AFTERNOON AND EVENING. IF
THIS HAPPENS SHOWER AND THUNDERSTORM ACTIVITY WILL BE OBSERVED
ACROSS PARTS OF NORTHERN LOUISIANA AND SOUTHEAST ARKANSAS THIS
AFTERNOON. GUIDANCE THINKS CLOUDS AND RAIN SHOULD HOLD MAX TEMPS
DOWN WITH APPROACHING FRONT THIS AFTERNOON...SO NO MORE THAN A
TEN DEGREE WARM UP HAS BEEN FORECASTED FOR TODAY. ANOTHER
DISTURBANCE APPROACHES MONDAY PUTTING A SLIGHT CHANCE OF RAIN IN
THE FORECAST...OTHERWISE A MOSTLY DRY FORECAST IS ON TAP THROUGH
MUCH OF THE SEVEN DAY FORECAST.

ELEVEN

&&

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

17/44

Hazardous weather outlook, Feb 3, 12:00 PM CST, 44 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE SHREVEPORT LA
1200 PM CST FRI FEB 3 2006

ARZ050-051-059>061-070>073-LAZ001>006-010>014-017>022-OKZ077-TXZ096-
097-108>112-124>126-136>138-149>153-165>167-041200-
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-
1200 PM CST FRI FEB 3 2006

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

.DAY ONE...THIS AFTERNOON AND TONIGHT...

A COLD FRONT WILL MOVE THROUGH THE FOUR STATE REGION THIS
AFTERNOON AND EVENING...RESULTING IN SHOWERS AND
THUNDERSTORMS ALONG AND AHEAD OF THE FRONT.  ISOLATED SEVERE
STORMS WILL BE POSSIBLE IN NORTHWEST AND NORTH CENTRAL LOUISIANA...
WITH LARGE HAIL BEING THE MAIN THREAT.  THIS ACTIVITY IS NOT EXPECTED
TO BE WIDESPREAD.

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

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

ACTIVATION OF EMERGENCY MANAGERS...SKYWARN NETWORKS...AND STORM
SPOTTERS...SHOULD NOT BE NEEDED THIS AFTERNOON AND TONIGHT.

44

In the hours before

Local storm report, Feb 3, 12:10 PM CST, 34 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SHREVEPORT LA
1210 PM CST FRI FEB 03 2006

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

1145 AM     HAIL             COLUMBIA                32.10N 92.08W
02/03/2006  1.00 INCH        CALDWELL           LA   LAW ENFORCEMENT

            QUARTER SIZED HAIL COVERING THE GROUND IN COLUMBIA

1145 AM     HAIL             GRAYSON                 32.05N 92.11W
02/03/2006  1.00 INCH        CALDWELL           LA   LAW ENFORCEMENT

            QUARTER SIZED HAIL COVERING THE GROUND IN GRAYSON

&&

15

Local storm report, Feb 3, 12:22 PM CST, 22 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SHREVEPORT LA
1222 PM CST FRI FEB 03 2006

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

1052 AM     HAIL             MANSFIELD               32.03N 93.70W
02/03/2006  0.75 INCH        DE SOTO            LA   LAW ENFORCEMENT

            PENNY SIZED HAIL FELL IN MANSFIELD

&&

15

Local storm report, Feb 3, 12:35 PM CST, 9 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SHREVEPORT LA
1235 PM CST FRI FEB 03 2006

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

1210 PM     HAIL             DODSON                  32.08N 92.66W
02/03/2006  0.88 INCH        WINN               LA   PUBLIC

            NICKEL SIZED HAIL COVERING THE GROUND AT A GROCERY STORE
            IN DODSON

&&

15

The office that day

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

Issued	Product	Office	Counties	Lasted
Feb 3, 10:48 AM CST	Severe Thunderstorm Warning	SHV	De Soto	42 min
Feb 3, 11:05 AM CST	Severe Thunderstorm Warning	SHV	Red River	40 min
Feb 3, 11:34 AM CST	Severe Thunderstorm Warning	SHV	Caldwell	56 min
Feb 3, 11:41 AM CST	Severe Thunderstorm Warning	SHV	Natchitoches	34 min
Feb 3, 12:02 PM CST	Severe Thunderstorm Warning	SHV	Winn	43 min

Nearby

Severe Thunderstorm Warnings in Louisiana, 2006 Every severe thunderstorm warning in 2006

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.