Alert archive / Louisiana / Severe Thunderstorm Warnings in 2014

Severe Thunderstorm Warning 228, NWS Shreveport, LA

October 13, 20144 parishes in Louisiana

NWS Shreveport, LA issued this severe thunderstorm warning at Oct 13, 2014, 9:35 AM CDT for 4 parishes in Louisiana. It was in force for 40 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 13, 2014, 9:35 AM CDT (14:35 UTC)
Expired: Oct 13, 2014, 10:15 AM CDT
In force: 40 min
Issued by: NWS Shreveport, LA
Area: Storm-based polygon

Counties Bienville Parish, LA, Claiborne Parish, LA, Red River Parish, LA, Webster Parish, LA

The radar

The Shreveport radar (KSHV), 62 km from the middle of the area, began a volume at 14:34 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 13, 3:22 AM CDT	Tornado Watch	SPC	8 hr
Oct 13, 7:08 AM CDT	Tornado Watch	SPC	7 hr

The nearest sounding before it

Shreveport, LA (KBAD), launched 12:00Z, 2.6 hours before the alert went out and 53 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: 1752 J/kg
Mixed-layer CIN: -2 J/kg
Mixed-layer LCL: 620 m above ground
0-6 km bulk shear: 38 kt
0-1 km storm-relative helicity: 300 m²/s²
0-3 km storm-relative helicity: 372 m²/s²
Significant tornado parameter: 2.8
Supercell composite: 17.4

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 13, 7:17 AM CDT, 2 hours 18 minutes earlier.

Area forecast discussion, Oct 13, 7:17 AM CDT, 2 hours 18 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SHREVEPORT LA
717 AM CDT MON OCT 13 2014

.AVIATION...
FOR THE 13/12Z TAFS...A STRONG LINE OF SHOWERS/THUNDERSTORMS
CURRENTLY LOCATED JUST WEST OF LINE FROM ELD TO SHV TO LFK WILL
CONTINUE TO MOVE EASTWARD ACROSS THE REGION PRODUCING STRONG AND
POTENTIALLY DAMAGING STRAIGHT LINE WINDS. AN ISOLATED TORNADO CAN
NOT BE RULED OUT. CIGS AND VISIBILITY WILL CONTINUE TO LOWER TO IFR/LIFR
AS STORMS MOVE OVER TAF SITES. CIGS SHOULD IMPROVE AT OUR WRN
SITES IN E TX AND POSSIBLY SHV/TXK/LFK AFTER 13/21Z AND AFTER
14/00Z AT MLU/ELD. THE OTHER CONCERN WILL BE THE STRONG WINDS NOT
ASSOCIATED WITH CONVECTION AS S/SW FLOW WILL PICK UP LATER THIS
MORNING AND WIND SPEEDS WILL INCREASE TO 12-20 KTS WITH HIGHER
GUSTS APPROACHING 25-30 KTS. W/NW WINDS EXPECTED BEHIND THE FRONT
WITH SPEEDS DROPPING OFF AFTER 14/00Z. /20/

&&

.PREV DISCUSSION... /ISSUED 340 AM CDT MON OCT 13 2014/

DISCUSSION...
SQUALL LINE IS JUST WEST OF THE CWA ATTM AND IS MOVING FASTER
THAN EXPECTED. GUIDANCE IS NOT HANDLING THE FASTER MOVEMENT SO
TODAYS HIGH TEMPS HAVE BEEN CREATED ON EXTRAPOLATION OF HAND DRAWN
THREE HOUR GRIDS. DEWPOINTS LIKE WISE. STILL LOOKING FOR
WIDESPREAD STRONG WINDS WITH THE LINE OF STORMS. A FEW DISCRETE
CELLS STILL POSSIBLE AHEAD OF THE LINE...AND THESE WILL HAVE TO BE
MONITORED FOR ROTATION. TORNADO WATCH HAS BEEN ISSUED THROUGH 16Z
TO COVER THIS MORNING. EXPECT ANOTHER FOR THE AFTERNOON...WHICH
WILL ACTUALLY HAVE MORE POTENTIAL DUE TO MORE LOW LEVEL INSTABILITY.
LAKE WIND ADVISORY WILL BE IN EFFECT FOR THE DAY FOR THE ENTIRE
CWA...BUT DO NOT EXPECT THE GUSTY WINDS ALL AREAS THIS MORNING DUE
TO A LOW LEVEL INVERSION IN SOME LOCATIONS AND MIXING DOWN OF THE
LOW LEVEL WINDS WILL BE SPORADIC.

BY MIDNIGHT...A CLOSED UPPER LOW IS EXPECTED TO BE LOCATED OVER
SOUTHERN MISSOURI WITH THE TROUGH EXTENDING SOUTH ACROSS THE CWA
AND TO THE UPPER TX COAST. THE SURFACE FRONT WILL BE EAST OF THE
AREA BY THAT TIME. SOME WRAP AROUND PRECIPITATION MAY FOLLOW THE
FRONT ACROSS SOUTHWEST ARKANSAS INTO NORTH CENTRAL LOUISIANA THIS
EVENING. COLD AIR ADVECTION WILL ALLOW TEMPS TO FALL INTO THE 50S
ACROSS ALL OF THE CWA BY DAYBREAK TUESDAY. ANY REMAINING PRECIP
SHOULD BE JUST NORTHEAST OF THE AREA BY THAT TIME.

ON TUESDAY...BRISK NORTHWEST WINDS WILL CONTINUE...BUT WITH CLEAR
SKIES...TEMPS SHOULD REACH THE 70S MOST AREAS. FOR TUESDAY NIGHT...
DECREASING WIND AND CLEAR SKIES WILL PROVIDE AMPLE RADIATIONAL
COOLING AND LOWS IN THE 40S CAN BE EXPECTED WEDNESDAY MORNING FOR
MOST OF THE CWA. FOR THE REST OF THE FORECAST WEEK...HIGHS WILL
BE NEAR NORMAL...IN THE UPPER 70S AND LOWER 80S. LOWS WILL BE
SLIGHTLY BELOW NORMAL DUE TO THE DRY AIR PLACE...WITH 40S NORTH TO
50S SOUTH.

&&

.PRELIMINARY POINT TEMPS/POPS...
SHV  78  53  74  48  78 / 100  20   0   0   0
MLU  82  55  73  50  77 / 100  40  10   0   0
DEQ  70  52  71  42  75 / 100  30   0   0   0
TXK  73  52  71  48  76 / 100  30   0   0   0
ELD  77  52  70  45  75 / 100  30  10   0   0
TYR  71  51  75  48  79 / 100  10   0   0   0
GGG  75  52  76  46  80 / 100  10   0   0   0
LFK  79  52  78  48  81 / 100  10   0   0   0

&&

.SHV WATCHES/WARNINGS/ADVISORIES...
AR...LAKE WIND ADVISORY UNTIL 7 PM CDT THIS EVENING FOR THE FOLLOWING
     ZONES: ARZ050-051-059>061-070>073.

LA...LAKE WIND ADVISORY UNTIL 7 PM CDT THIS EVENING FOR THE FOLLOWING
     ZONES: LAZ001>006-010>014-017>022.

OK...LAKE WIND ADVISORY UNTIL 7 PM CDT THIS EVENING FOR THE FOLLOWING
     ZONES: OKZ077.

TX...LAKE WIND ADVISORY UNTIL 7 PM CDT THIS EVENING FOR THE FOLLOWING
     ZONES: TXZ096-097-108>112-124>126-136>138-149>153-165>167.

&&

14/20

Hazardous weather outlook, Oct 13, 4:46 AM CDT, 4 hours 49 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE SHREVEPORT LA
446 AM CDT MON OCT 13 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>167-131715-
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-
446 AM CDT MON OCT 13 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...TODAY AND TONIGHT...

A SQUALL LINE WILL MOVE FROM WEST TO EAST ACROSS THE REGION TODAY.
DAMAGING WIND WILL BE THE MAIN THREAT FROM THIS EVENT. A FEW
DISCRETE THUNDERSTORMS MAY DEVELOP AHEAD OF THE SQUALL LINE...
WITH A FEW TORNADOES POSSIBLE IN THESE STORMS. HIGHEST RISK OF
THE TORNADOES WILL BE ACROSS SOUTH CENTRAL ARKANSAS AND NORTH
CENTRAL LOUISIANA. LOCALLY HEAVY RAINFALL IS POSSIBLE...BUT DUE TO
THE FAST MOVEMENT OF THIS SYSTEM...FLASH FLOODING IS NOT LIKELY.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY...

NO HAZARDOUS WEATHER IS EXPECTED.

.SPOTTER INFORMATION STATEMENT...

ACTIVATION OF EMERGENCY MANAGEMENT PERSONNEL...AMATEUR RADIO
OPERATORS...AND STORM SPOTTERS MAY BE NEEDED AREA WIDE TODAY.

In the hours before

Local storm report, Oct 13, 7:42 AM CDT, 1 hour 53 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SHREVEPORT LA
742 AM CDT MON OCT 13 2014

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

0644 AM     TSTM WND DMG     RUSK                    31.80N  95.15W
10/13/2014                   CHEROKEE           TX   LAW ENFORCEMENT

            TREES DOWN ALL OVER COUNTY BLOCKING HWYS 84... 2138...
            747 SOUTH... CR 3908 ... 3708

&&

EVENT NUMBER SHV1400622

25

Local storm report, Oct 13, 8:02 AM CDT, 1 hour 33 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SHREVEPORT LA
802 AM CDT MON OCT 13 2014

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

0521 AM     TSTM WND DMG     PITTSBURG               33.00N  94.97W
10/13/2014                   CAMP               TX   EMERGENCY MNGR

            TREES DOWN... BARN BLOWN DOWN POWER LINES DOWN NORTH OF
            LEESBURG BETWEEN LEESBURG AND LAKE BOB SANDLIN... ROADS
            BLOCKED

&&

EVENT NUMBER SHV1400623

25

Local storm report, Oct 13, 8:04 AM CDT, 1 hour 31 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SHREVEPORT LA
804 AM CDT MON OCT 13 2014

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

0653 AM     TSTM WND DMG     HENDERSON               32.16N  94.80W
10/13/2014                   RUSK               TX   LAW ENFORCEMENT

            TREES DOWN ALL OVER COUNTY

&&

EVENT NUMBER SHV1400624

25

Local storm report, Oct 13, 8:51 AM CDT, 44 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SHREVEPORT LA
851 AM CDT MON OCT 13 2014

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

0455 AM     TSTM WND DMG     3 N HARRIS              33.79N  94.72W
10/13/2014                   MCCURTAIN          OK   LAW ENFORCEMENT

            POWER LINES DOWN

&&

EVENT NUMBER SHV1400625

25

Local storm report, Oct 13, 8:53 AM CDT, 42 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SHREVEPORT LA
853 AM CDT MON OCT 13 2014

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

0440 AM     TSTM WND DMG     4 S GARVIN              33.90N  94.95W
10/13/2014                   MCCURTAIN          OK   LAW ENFORCEMENT

            TREE DOWN ON HWY 37 AT IRON STOB ROAD

&&

EVENT NUMBER SHV1400626

25

Local storm report, Oct 13, 9:24 AM CDT, 11 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SHREVEPORT LA
924 AM CDT MON OCT 13 2014

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

0650 AM     LIGHTNING        LONGVIEW                32.52N  94.76W
10/13/2014                   GREGG              TX   BROADCAST MEDIA

            LIGHTNING STRIKE SET OIL WELL SITE ON FIRE...
            INTERSECTION HG MOSELEY AND BILL OWENS PARKWAY SOUTHEAST
            OF WILDWOOD... RESIDENTS EVACUATED FROM AREA

&&

EVENT NUMBER SHV1400627

25

The office that day

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

Issued	Product	Office	Counties	Lasted
Oct 12, 10:11 PM CDT	Lake Wind Advisory	SHV	Bowie, Camp, Cass, Cherokee, Franklin, Gregg and 12 more	21 hr
Oct 13, 4:31 AM CDT	Severe Thunderstorm Warning	SHV	Red River	29 min
Oct 13, 4:38 AM CDT	Severe Thunderstorm Warning	SHV	Bowie, Camp, Cass, Franklin, Morris, Red River and 1 more	52 min
Oct 13, 4:56 AM CDT	Severe Thunderstorm Warning	SHV	Camp, Cass, Marion, Morris, Titus, Upshur	49 min
Oct 13, 5:43 AM CDT	Severe Thunderstorm Warning	SHV	Cass, Marion	47 min
Oct 13, 6:39 AM CDT	Severe Thunderstorm Warning	SHV	Cherokee, Nacogdoches, Panola, Rusk, Shelby	36 min
Oct 13, 8:26 AM CDT	Severe Thunderstorm Warning	SHV	Shelby	34 min
Oct 13, 9:21 AM CDT	Severe Thunderstorm Warning	SHV	Sabine, Shelby	24 min
Oct 13, 10:26 AM CDT	Severe Thunderstorm Warning	SHV	Sabine	64 min
Oct 13, 10:54 AM CDT	Severe Thunderstorm Warning	SHV	Sabine	36 min
Oct 13, 7:32 AM CDT	Severe Thunderstorm Warning	SHV	Claiborne, Webster	43 min
Oct 13, 8:54 AM CDT	Severe Thunderstorm Warning	SHV	De Soto, Red River	51 min
Oct 13, 9:01 AM CDT	Tornado Warning	SHV	De Soto, Red River	29 min
Oct 13, 10:09 AM CDT	Severe Thunderstorm Warning	SHV	Bienville, Jackson, Lincoln, Natchitoches, Red River, Winn	66 min
Oct 13, 10:41 AM CDT	Severe Thunderstorm Warning	SHV	Lincoln, Union	64 min
Oct 13, 10:45 AM CDT	Severe Thunderstorm Warning	SHV	Caldwell, Jackson, Lincoln, Ouachita, Union, Winn	60 min
Oct 13, 11:04 AM CDT	Severe Thunderstorm Warning	SHV	Grant, Natchitoches, Winn	26 min
Oct 13, 11:13 AM CDT	Severe Thunderstorm Warning	SHV	Grant, Natchitoches, Winn	32 min
Oct 13, 11:25 AM CDT	Tornado Warning	SHV	Ouachita	20 min
Oct 13, 11:27 AM CDT	Severe Thunderstorm Warning	SHV	Caldwell, Ouachita, Union, Winn	63 min
Oct 13, 11:49 AM CDT	Severe Thunderstorm Warning	SHV	Caldwell, Grant, LaSalle, Natchitoches, Winn	56 min
Oct 13, 6:22 AM CDT	Severe Thunderstorm Warning	SHV	Columbia, Hempstead, Howard, Lafayette, Little River, Miller and 1 more	53 min

Nearby

Severe Thunderstorm Warnings in Louisiana, 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.