Alert archive / Arkansas / Severe Thunderstorm Warnings in 2019

Severe Thunderstorm Warning 17, NWS Shreveport, LA

March 9, 2019Claiborne Parish, Louisiana; Columbia County, Union County, Arkansas

NWS Shreveport, LA issued this severe thunderstorm warning at Mar 9, 2019, 11:59 AM CST for Claiborne Parish, Louisiana; Columbia County, Union County, Arkansas. It was in force for 37 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
Mar 9, 2019, 11:59 AM CST (17:59 UTC)
Expired
Mar 9, 2019, 12:36 PM CST
In force
37 min
Issued by
NWS Shreveport, LA
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

Counties Columbia County, AR, Union County, AR, Claiborne Parish, LA

The radar

The Shreveport radar (KSHV), 109 km from the middle of the area, began a volume at 17:57 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.

IssuedProductOfficeLasted
Mar 9, 7:18 AM CSTSevere Thunderstorm WatchSPC8 hr
Mar 9, 11:05 AM CSTTornado WatchSPC4 hr

The nearest sounding before it

Shreveport, LA (KBAD), launched 12:00Z, 6.0 hours before the alert went out and 100 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-pSkew-T log-p diagram, Shreveport, LA at 12:00Z on 2019-03-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 968 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Shreveport, LA at 12:00Z on 2019-03-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 226 square meters per square second.1939587897117Sfc1 km3 km6 km9 kmRMLM
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
968 J/kg
Mixed-layer CIN
-16 J/kg
Mixed-layer LCL
576 m above ground
0-6 km bulk shear
68 kt
0-1 km storm-relative helicity
226 m²/s²
0-3 km storm-relative helicity
271 m²/s²
Significant tornado parameter
2.0
Supercell composite
7.4

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 Mar 9, 11:44 AM CST, 15 minutes earlier.

Area forecast discussion, Mar 9, 11:44 AM CST, 15 minutes before
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Hazardous weather outlook, Mar 9, 11:59 AM CST, 0 minutes before
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In the hours before

Local storm report, Mar 9, 9:02 AM CST, 2 hours 57 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SHREVEPORT LA
902 AM CST SAT MAR 9 2019

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

0824 AM     FLASH FLOOD      1 NW DE QUEEN           34.05N 94.35W
03/09/2019                   SEVIER             AR   TRAINED SPOTTER

            WATER ACROSS CIRCLE DRIVE. 3 INCHES OF RAIN
            ALSO MEASURED BY THE PUBLIC AND REPORTED VIA
            SOCIAL MEDIA.

&&

CN
Local storm report, Mar 9, 9:17 AM CST, 2 hours 42 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SHREVEPORT LA
917 AM CST SAT MAR 9 2019

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

0750 AM     TSTM WND DMG     14 N DIERKS             34.32N 93.98W
03/09/2019                   HOWARD             AR   TRAINED SPOTTER

            REPORTS OF CHICKEN HOUSES AND BARNS DAMAGED
            AND TREES AND POWER LINES DOWN IN THE ATHENS
            AREA.

&&

CN
Local storm report, Mar 9, 10:07 AM CST, 1 hour 52 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SHREVEPORT LA
1007 AM CST SAT MAR 9 2019

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

0929 AM     TSTM WND GST     1 NNW PITTSBURG         33.01N 94.98W
03/09/2019  E60 MPH          CAMP               TX   PUBLIC

&&

CN
Local storm report, Mar 9, 10:54 AM CST, 1 hour 5 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SHREVEPORT LA
1054 AM CST SAT MAR 9 2019

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

1053 AM     TORNADO          4 NNW HOSSTON           32.94N 93.91W
03/09/2019                   CADDO              LA   AMATEUR RADIO

            TORNADO REPORTED ON MIRA MYRTIS ROAD WEST OF
            INTERSTATE 49.

&&

CN
Local storm report, Mar 9, 11:17 AM CST, 42 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SHREVEPORT LA
1117 AM CST SAT MAR 9 2019

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

1014 AM     TSTM WND DMG     6 WNW ATLANTA           33.14N 94.26W
03/09/2019                   CASS               TX   TRAINED SPOTTER

            TREE DOWN AT THE INTERSECTION OF HWY 96 AND
            HWY 77.

&&

CN
Special weather statement, Mar 9, 11:34 AM CST, 25 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Mar 9, 6:03 AM CSTSpecial Weather StatementSHVRed River42 min
Mar 9, 6:55 AM CSTSpecial Weather StatementSHVRed River50 min
Mar 9, 7:08 AM CSTSevere Thunderstorm WarningSHVRed River67 min
Mar 9, 8:41 AM CSTSevere Thunderstorm WarningSHVCamp, Franklin, Morris, Smith, Titus, Upshur and 1 more49 min
Mar 9, 9:24 AM CSTSevere Thunderstorm WarningSHVGregg, Harrison, Marion, Rusk, Smith, Upshur and 1 more66 min
Mar 9, 9:29 AM CSTSevere Thunderstorm WarningSHVBowie, Camp, Cass, Morris, Red River, Titus and 1 more61 min
Mar 9, 10:14 AM CSTTornado WarningSHVBowie, Cass16 min
Mar 9, 10:24 AM CSTSevere Thunderstorm WarningSHVBowie, Cass, Marion66 min
Mar 9, 10:33 AM CSTSevere Thunderstorm WarningSHVGregg, Harrison, Panola, Rusk, Smith42 min
Mar 9, 10:40 AM CSTTornado WarningSHVCass, Marion50 min
Mar 9, 11:17 AM CSTSevere Thunderstorm WarningSHVGregg, Harrison, Panola, Rusk43 min
Mar 9, 11:34 AM CSTSpecial Weather StatementSHVCherokee, Rusk41 min
Mar 9, 11:56 AM CSTSevere Thunderstorm WarningSHVCherokee, Nacogdoches, Rusk39 min
Mar 9, 12:04 PM CSTSpecial Weather StatementSHVPanola, Shelby41 min
Mar 9, 12:12 PM CSTSpecial Weather StatementSHVNacogdoches48 min
Mar 9, 12:50 PM CSTSpecial Weather StatementSHVShelby40 min
Mar 9, 12:52 PM CSTSpecial Weather StatementSHVNacogdoches38 min
Mar 9, 1:44 PM CSTSpecial Weather StatementSHVShelby46 min
Mar 9, 3:13 PM CSTSpecial Weather StatementSHVAngelina32 min
Mar 9, 11:20 AM CSTSevere Thunderstorm WarningSHVClaiborne, Webster40 min
Mar 9, 11:24 AM CSTTornado WarningSHVClaiborne, Webster36 min
Mar 9, 12:47 PM CSTSpecial Weather StatementSHVLincoln, Union43 min
Mar 9, 1:28 PM CSTSevere Thunderstorm WarningSHVLincoln, Union32 min
Mar 9, 1:31 PM CSTSevere Thunderstorm WarningSHVBienville, Jackson, Lincoln44 min
Mar 9, 1:52 PM CSTSpecial Weather StatementSHVLincoln, Union38 min
Mar 9, 2:05 PM CSTSpecial Weather StatementSHVBienville, Lincoln40 min
Mar 9, 2:32 PM CSTSpecial Weather StatementSHVSabine43 min
Mar 9, 2:36 PM CSTSpecial Weather StatementSHVRed River39 min
Mar 9, 3:26 PM CSTSpecial Weather StatementSHVNatchitoches34 min
Mar 9, 4:04 PM CSTSpecial Weather StatementSHVOuachita26 min
Mar 9, 4:08 PM CSTSpecial Weather StatementSHVNatchitoches37 min
Mar 9, 5:50 AM CSTSpecial Weather StatementSHVHoward, Sevier40 min
Mar 9, 7:41 AM CSTSevere Thunderstorm WarningSHVHoward, Sevier34 min
Mar 9, 8:17 AM CSTSevere Thunderstorm WarningSHVHoward, Sevier43 min
Mar 9, 12:28 PM CSTSpecial Weather StatementSHVUnion47 min

Nearby

Severe Thunderstorm Warnings in Arkansas, 2019Severe Thunderstorm Warnings in Louisiana, 2019Every severe thunderstorm warning in 2019

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.