Alert archive / Texas / Severe Thunderstorm Warnings in 2018

Severe Thunderstorm Warning 14, NWS Shreveport, LA

February 22, 2018Red River County, Texas

NWS Shreveport, LA issued this severe thunderstorm warning at Feb 22, 2018, 11:55 AM CST for Red River County, Texas. It was in force for 23 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 22, 2018, 11:55 AM CST (17:55 UTC)
Expired
Feb 22, 2018, 12:18 PM CST
In force
23 min
Issued by
NWS Shreveport, LA
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

County Red River County, TX

The radar

The Shreveport radar (KSHV), 172 km from the middle of the area, began a volume at 17:58 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 nearest sounding before it

Shreveport, LA (KBAD), launched 12:00Z, 5.9 hours before the alert went out and 175 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 2018-02-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1 joules per kilogram.LCLEL10008507005003002001001 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 2018-02-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 113 square meters per square second.19395878Sfc1 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
1 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
449 m above ground
0-6 km bulk shear
46 kt
0-1 km storm-relative helicity
113 m²/s²
0-3 km storm-relative helicity
91 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 22, 10:59 AM CST, 56 minutes earlier.

Area forecast discussion, Feb 22, 10:59 AM CST, 56 minutes before
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Hazardous weather outlook, Feb 22, 11:14 AM CST, 41 minutes before
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      <div class="status" id="status">Temporary Notice</div>
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        The site you requested is temporarily down for maintenance or an unexpected outage.
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In the hours before

Local storm report, Feb 22, 6:00 AM CST, 5 hours 55 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SHREVEPORT LA
600 AM CST THU FEB 22 2018

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

0600 AM     FLASH FLOOD      1 S BIENVILLE           32.34N 92.98W
02/22/2018                   BIENVILLE          LA   PUBLIC

            WATER OVER THE ROAD.

&&

AS
Local storm report, Feb 22, 6:02 AM CST, 5 hours 53 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SHREVEPORT LA
602 AM CST THU FEB 22 2018

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

0557 AM     FLASH FLOOD      6 S MONTGOMERY          31.58N 92.90W
02/22/2018                   NATCHITOCHES       LA   LAW ENFORCEMENT

            CORRECTS PREVIOUS FLASH FLOOD REPORT FROM 6
            S MONTGOMERY. HIGH WATER ACROSS ROAD. LARGE
            HOLE IN THE ROAD FROM THE FLOODING.

&&

AS
Special weather statement, Feb 22, 6:12 AM CST, 5 hours 43 minutes before
Special Weather Statement
National Weather Service Shreveport LA
612 AM CST THU FEB 22 2018

LAZ006-013-014-019>022-221300-
Caldwell LA-Winn LA-La Salle LA-Ouachita LA-Union LA-Grant LA-
Jackson LA-
612 AM CST THU FEB 22 2018

...SIGNIFICANT WEATHER ADVISORY FOR CENTRAL GRANT...CALDWELL...
SOUTHEASTERN JACKSON...SOUTHEASTERN UNION...LA SALLE...OUACHITA AND
EASTERN WINN PARISHES UNTIL 700 AM CST...

At 612 AM CST, Doppler radar was tracking strong thunderstorms along
a line extending from 6 miles south of Richwood to 10 miles northeast
of Colfax. Movement was northeast at 15 mph.

Moderate rainfall and winds in excess of 30 mph will be possible
with these storms.

Locations impacted include...
Monroe, Claiborne, West Monroe, Columbia, Swartz, Brownsville-Bawcom,
Brownsville-Bawcomville, Jena, Richwood, Sterlington, Colfax, Olla,
Clarks, Grayson, Midway, Urania, Pollock, Dry Prong, Tullos and
Georgetown.

LAT...LON 3207 9193 3201 9189 3193 9190 3193 9201
      3164 9201 3154 9211 3150 9270 3154 9275
      3269 9219 3271 9197 3266 9191 3260 9193
      3251 9190 3240 9200 3228 9203 3227 9199
      3219 9201 3217 9198 3216 9190 3209 9187
TIME...MOT...LOC 1212Z 213DEG 14KT 3235 9209 3166 9261

FB
Local storm report, Feb 22, 10:50 AM CST, 1 hour 5 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SHREVEPORT LA
1050 AM CST THU FEB 22 2018

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

1010 AM     FLOOD            7 SSW BOGATA            33.37N 95.24W
02/22/2018                   FRANKLIN           TX   PUBLIC

            TX 37 IS CLOSED AT THE SULPHUR RIVER BRIDGE,
            DUE TO WATER OVER THE ROAD.

&&

PALMER
Local storm report, Feb 22, 11:04 AM CST, 51 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SHREVEPORT LA
1104 AM CST THU FEB 22 2018

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

0956 AM     HAIL             2 N MOUNT VERNON        33.20N 95.23W
02/22/2018  E1.00 INCH       FRANKLIN           TX   PUBLIC

            HAIL BETWEEN A QUARTER AND ONE INCH.

&&

PALMER
Special weather statement, Feb 22, 11:43 AM CST, 12 minutes before
Special Weather Statement
National Weather Service Shreveport LA
1143 AM CST THU FEB 22 2018

ARZ050-OKZ077-TXZ096-221830-
Sevier AR-McCurtain OK-Red River TX-
1143 AM CST THU FEB 22 2018

...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN SEVIER...CENTRAL
MCCURTAIN AND NORTHWESTERN RED RIVER COUNTIES UNTIL 1230 PM CST...

At 1143 AM CST, Doppler radar was tracking a strong thunderstorm near
Manchester, or 14 miles north of Clarksville, moving northeast at 50
mph.

Nickel size hail will be possible with this storm.

Locations impacted include...
Idabel, Broken Bow, Manchester, Wright City, Valliant, Millerton,
Garvin, Eagletown, Farmers Hill, Hochatown, Negley, Mount Herman,
Sherwood, Redland, Silver City, Holly Creek, Glover, Albion, West
Line and Bethel.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Torrential rainfall is also occurring with this storm, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.

&&

LAT...LON 3424 9447 3419 9447 3419 9438 3411 9426
      3369 9506 3381 9523 3447 9482
TIME...MOT...LOC 1743Z 220DEG 46KT 3381 9509

12

The office that day

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

IssuedProductOfficeCountiesLasted
Feb 21, 6:49 PM CSTAreal Flood WarningSHVBowie, Cass9 hr
Feb 21, 10:46 PM CSTAreal Flood WarningSHVPanola6 hr
Feb 22, 12:59 AM CSTSpecial Weather StatementSHVShelby46 min
Feb 22, 4:41 AM CSTSpecial Weather StatementSHVAngelina, Nacogdoches, Sabine, San Augustine, Shelby49 min
Feb 22, 5:45 AM CSTAreal Flood AdvisorySHVPanola, Shelby2 hr
Feb 22, 6:06 AM CSTRiver Flood WarningSHVAngelina, Houston, Polk, Trinity, Tyler27 days
Feb 22, 7:57 AM CSTAreal Flood AdvisorySHVNacogdoches, Sabine, San Augustine, Shelby3 hr
Feb 22, 9:54 AM CSTAreal Flood AdvisorySHVBowie, Cass, Franklin, Morris, Red River, Titus3 hr
Feb 22, 10:39 AM CSTFlash Flood WarningSHVBowie, Cass, Franklin, Morris, Red River, Titus3 hr
Feb 21, 8:48 PM CSTFlash Flood WarningSHVLincoln, Ouachita, Union10 hr
Feb 22, 1:47 AM CSTFlash Flood WarningSHVBienville, Grant, Jackson, Natchitoches, Winn5 hr
Feb 22, 3:52 AM CSTSpecial Weather StatementSHVNatchitoches38 min
Feb 22, 5:09 AM CSTSpecial Weather StatementSHVCaldwell, Grant, LaSalle, Ouachita, Winn51 min
Feb 22, 6:12 AM CSTSpecial Weather StatementSHVCaldwell, Grant, LaSalle, Ouachita48 min
Feb 22, 6:45 AM CSTFlash Flood WarningSHVBienville, Grant, Jackson, Natchitoches, Winn3 hr
Feb 22, 6:46 AM CSTFlash Flood WarningSHVLincoln, Ouachita, Union6 hr
Feb 22, 7:08 AM CSTAreal Flood AdvisorySHVCaldwell, LaSalle3 hr
Feb 22, 9:45 AM CSTAreal Flood AdvisorySHVBienville, Grant, Jackson, Natchitoches, Winn3 hr
Feb 22, 10:10 AM CSTRiver Flood WarningSHVBienville, Bossier, Red River, Webster18 days
Feb 22, 11:37 AM CSTRiver Flood WarningSHVCaldwell, Ouachita, Union72 days
Feb 22, 4:04 PM CSTAreal Flood AdvisorySHVBossier, Caddo116 min
Feb 22, 5:40 PM CSTAreal Flood AdvisorySHVBossier, Webster65 min
Feb 21, 6:36 PM CSTAreal Flood WarningSHVHempstead, Howard, Little River, Sevier9 hr
Feb 22, 3:46 AM CSTAreal Flood AdvisorySHVSevier3 hr
Feb 22, 11:37 AM CSTRiver Flood WarningSHVAshley, Union85 days
Feb 22, 12:36 PM CSTFlash Flood WarningSHVSevier4 hr

Nearby

Severe Thunderstorm Warnings in Texas, 2018Every severe thunderstorm warning in 2018

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.