Alert archive / Arkansas / Severe Thunderstorm Warnings in 2014

Severe Thunderstorm Warning 183, NWS Shreveport, LA

October 2, 2014Hempstead County, Nevada County, Arkansas

NWS Shreveport, LA issued this severe thunderstorm warning at Oct 2, 2014, 6:35 PM CDT for Hempstead County, Nevada County, Arkansas. It was in force for 55 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, 6:35 PM CDT (23:35 UTC)
Expired: Oct 2, 2014, 7:30 PM CDT
In force: 55 min
Issued by: NWS Shreveport, LA
Area: Storm-based polygon

Counties Hempstead County, AR, Nevada County, AR

The radar

The Shreveport radar (KSHV), 143 km from the middle of the area, began a volume at 23:35 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, 11.6 hours before the alert went out and 138 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, 6:35 PM CDT, 0 minutes earlier.

Area forecast discussion, Oct 2, 6:35 PM CDT, 0 minutes before

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Hazardous weather outlook, Oct 2, 11:10 AM CDT, 7 hours 25 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, 5:57 PM CDT, 38 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SHREVEPORT LA
557 PM CDT THU OCT 02 2014

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

0550 PM     TSTM WND DMG     CLARKSVILLE             33.61N  95.06W
10/02/2014                   RED RIVER          TX   LAW ENFORCEMENT

            NUMEROUS TREES DOWN - ALL OVER COUNTY

&&

EVENT NUMBER SHV1400533

25

Local storm report, Oct 2, 5:58 PM CDT, 37 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SHREVEPORT LA
558 PM CDT THU OCT 02 2014

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

0556 PM     TSTM WND DMG     MOUNT VERNON            33.17N  95.22W
10/02/2014                   FRANKLIN           TX   LAW ENFORCEMENT

            TREES DOWN COUNTY WIDE

&&

EVENT NUMBER SHV1400534

25

Local storm report, Oct 2, 6:07 PM CDT, 28 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SHREVEPORT LA
607 PM CDT THU OCT 02 2014

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

0600 PM     TSTM WND DMG     QUITMAN                 32.80N  95.44W
10/02/2014                   WOOD               TX   LAW ENFORCEMENT

            TREE DOWN ACROSS THE COUNTY

&&

EVENT NUMBER SHV1400535

25

Local storm report, Oct 2, 6:16 PM CDT, 19 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SHREVEPORT LA
616 PM CDT THU OCT 02 2014

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

0610 PM     TSTM WND DMG     MOUNT PLEASANT          33.17N  94.98W
10/02/2014                   TITUS              TX   LAW ENFORCEMENT

            NUMEROUS TREES DOWN...POWER LINES DOWN

&&

EVENT NUMBER SHV1400536

25

Local storm report, Oct 2, 6:30 PM CDT, 5 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SHREVEPORT LA
630 PM CDT THU OCT 02 2014

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

0625 PM     TSTM WND DMG     10 S DE KALB            33.36N  94.62W
10/02/2014                   BOWIE              TX   LAW ENFORCEMENT

            NUMEROUS TREES DOWN

&&

EVENT NUMBER SHV1400537

25

Local storm report, Oct 2, 6:35 PM CDT, 0 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, 6:57 PM CDT	Severe Thunderstorm Warning	SHV	Bowie, Cass	63 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

Nearby

Severe Thunderstorm Warnings in Arkansas, 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.