Alert archive / Arkansas / Severe Thunderstorm Warnings in 2014

Severe Thunderstorm Warning 186, NWS Shreveport, LA

October 2, 2014Bowie County, Cass County, Texas; 4 counties in Arkansas

NWS Shreveport, LA issued this severe thunderstorm warning at Oct 2, 2014, 6:57 PM CDT for Bowie County, Cass County, Texas; 4 counties in Arkansas. It was in force for 63 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: Oct 2, 2014, 6:57 PM CDT (23:57 UTC)
Expired: Oct 2, 2014, 8:00 PM CDT
In force: 63 min
Issued by: NWS Shreveport, LA
Area: Storm-based polygon

Counties Hempstead County, AR, Lafayette County, AR, Little River County, AR, Miller County, AR, Bowie County, TX, Cass County, TX

The radar

The Shreveport radar (KSHV), 109 km from the middle of the area, began a volume at 23:55 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
Oct 2, 5:48 PM CDT	Tornado Watch	SPC	8 hr

The nearest sounding before it

Shreveport, LA (KBAD), launched 12:00Z, 12.0 hours before the alert went out and 108 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: 1448 J/kg
Mixed-layer CIN: -24 J/kg
Mixed-layer LCL: 551 m above ground
0-6 km bulk shear: 21 kt
0-1 km storm-relative helicity: 100 m²/s²
0-3 km storm-relative helicity: 1 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.8

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 Oct 2, 6:42 PM CDT, 15 minutes earlier.

Area forecast discussion, Oct 2, 6:42 PM CDT, 15 minutes before

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Hazardous weather outlook, Oct 2, 11:10 AM CDT, 7 hours 47 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE SHREVEPORT LA
1110 AM CDT THU OCT 2 2014

ARZ050-051-059>061-070>073-LAZ001>006-010>014-017>022-OKZ077-
TXZ096-097-108>112-124>126-136>138-149>153-165>167-031615-
SEVIER-HOWARD-LITTLE RIVER-HEMPSTEAD-NEVADA-MILLER-LAFAYETTE-
COLUMBIA-UNION AR-CADDO-BOSSIER-WEBSTER-CLAIBORNE-LINCOLN-
UNION LA-DE SOTO-RED RIVER-BIENVILLE-JACKSON-OUACHITA-SABINE LA-
NATCHITOCHES-WINN-GRANT-CALDWELL-LA SALLE-MCCURTAIN-BOWIE-
FRANKLIN-TITUS-CAMP-MORRIS-CASS-WOOD-UPSHUR-MARION-SMITH-GREGG-
HARRISON-CHEROKEE-RUSK-PANOLA-NACOGDOCHES-SHELBY-ANGELINA-
SAN AUGUSTINE-SABINE TX-
1110 AM CDT THU OCT 2 2014

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...THIS AFTERNOON AND TONIGHT...

SCATTERED THUNDERSTORMS WILL DEVELOP ACROSS THE REGION LATER TODAY
AS THE HEAT AND INSTABILITY CONTINUE TO BUILD AHEAD OF A STRONG
COLD FRONT. BY LATER THIS EVENING AND OVERNIGHT...THE COLD FRONT
WILL RACE RAPIDLY ACROSS THE FOUR STATE REGION WITH SHOWERS AND
THUNDERSTORMS LIKELY AREA WIDE. SOME OF THESE STORMS MAY BE STRONG
TO SEVERE...WITH THE PRIMARY THREATS BEING DAMAGING STRAIGHT LINE
WINDS AND LARGE HAIL. HOWEVER...THE POSSIBILITY OF A FEW ISOLATED
TORNADOES CAN NOT BE RULED OUT.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY...

ISOLATED SHOWERS AND THUNDERSTORMS WILL RETURN TO THE REGION WITH
A WEAK COLD FRONT BY THE EARLY TO MIDDLE PART OF NEXT WEEK.
HOWEVER...NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

ACTIVATION OF EMERGENCY MANAGEMENT PERSONNEL...AMATEUR RADIO
OPERATORS AND STORM SPOTTERS WILL BE NEEDED THROUGH TONIGHT.

12

In the hours before

Local storm report, Oct 2, 6:36 PM CDT, 21 minutes before

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Local storm report, Oct 2, 6:37 PM CDT, 20 minutes before

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Local storm report, Oct 2, 6:43 PM CDT, 14 minutes before

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Local storm report, Oct 2, 6:45 PM CDT, 12 minutes before

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Local storm report, Oct 2, 6:49 PM CDT, 8 minutes before

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Local storm report, Oct 2, 6:53 PM CDT, 4 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
Oct 2, 5:09 PM CDT	Severe Thunderstorm Warning	SHV	Red River	66 min
Oct 2, 5:44 PM CDT	Severe Thunderstorm Warning	SHV	Franklin, Red River, Titus, Wood	37 min
Oct 2, 5:48 PM CDT	Severe Thunderstorm Warning	SHV	Bowie, Red River	42 min
Oct 2, 6:00 PM CDT	Severe Thunderstorm Warning	SHV	Bowie, Camp, Morris, Red River, Titus	45 min
Oct 2, 6:25 PM CDT	Severe Thunderstorm Warning	SHV	Gregg, Smith, Upshur, Wood	50 min
Oct 2, 6:32 PM CDT	Severe Thunderstorm Warning	SHV	Bowie, Cass	43 min
Oct 2, 6:38 PM CDT	Severe Thunderstorm Warning	SHV	Bowie	67 min
Oct 2, 6:00 PM CDT	Severe Thunderstorm Warning	SHV	Bossier, Caddo, Webster	45 min
Oct 2, 6:42 PM CDT	Severe Thunderstorm Warning	SHV	Bossier, Claiborne, Webster	48 min
Oct 2, 6:35 PM CDT	Severe Thunderstorm Warning	SHV	Hempstead, Nevada	55 min

Nearby

Severe Thunderstorm Warnings in Arkansas, 2014 Severe Thunderstorm Warnings in Texas, 2014 Every severe thunderstorm warning in 2014

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.