Alert archive / Texas / Tornado Warnings in 2017

Tornado Warning 89, NWS Shreveport, LA

December 19, 2017Cherokee County, Nacogdoches County, Rusk County, Texas

NWS Shreveport, LA issued this tornado warning at Dec 19, 2017, 7:05 PM CST for Cherokee County, Nacogdoches County, Rusk County, Texas. It was in force for 40 min. 8 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
Dec 19, 2017, 7:05 PM CST (01:05 UTC)
Expired
Dec 19, 2017, 7:45 PM CST
In force
40 min
Issued by
NWS Shreveport, LA
Area
Storm-based polygon
Tornado
Radar indicated
Hail
0.75 in

Counties Cherokee County, TX, Nacogdoches County, TX, Rusk County, TX

The radar

The Shreveport radar (KSHV), 138 km from the middle of the area, began a volume at 01:06 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.

What was reported inside it

TimeReportWhereRemark
Dec 19, 7:06 PM CSTTSTM WND DMG2 Ssw Rusk, TXKETK LIVE FACEBOOK POST REPORTS METAL DEBRIS, METAL SHED DESTROYED, TREES DOWN ON HIGHWAY 23 SOUTH OF RUSK.
Dec 19, 7:06 PM CSTTORNADO3 S Rusk, TXCONCRETE POWER POLES PUSHED OVER AND SNAPPED.
Dec 19, 7:11 PM CSTTSTM WND DMG5 Sw Rusk, TX3 HOMES WITHOUT ROOFS WITHIN 3 MILES ONE AT CR 2210 OFF 1857, ONE FM 23 AND 2159, TREES DOWN IN THE AREA, POWER LINES DOWN IN THE AREA.
Dec 19, 7:11 PM CSTTSTM WND DMGRusk, TXSHERIFF'S OFFICE REPORTS SEVERAL TREES DOWN, POWER LINES DOWN, AND SOME DAMAGE TO HOMES ON FM ROADS NEAR RUSK, REPORT DETAILS STILL COMING IN AT 835 PM.
Dec 19, 7:27 PM CSTTSTM WND DMG1 Sw Reklaw, TXPOWER OUT WEST OF REKLAW.
Dec 19, 7:30 PM CSTTSTM WND DMG1 Ne Reklaw, TXMULTIPLE TREES REPORTED DOWN IN SOUTHWEST PART OF THE COUNTY ON 225 AND 84.
Dec 19, 7:31 PM CSTTORNADO3 Ne Reklaw, TXA SINGLE FAMILY HOME WAS DESTROYED AS EF-2 TORNADIC WINDS OF AROUND 115 MPH LIFTED IT OFF OF PIER AND BEAM FOUNDATION AND MOVED IT ABOUT 15 YARDS INTO THE FOREST. A FIBERGLASS FISHING BOAT WAS LOFTED WITH WHEREABOUTS UNKNOWN. SEVERAL PINE TREES WERE SNAPPED AB
Dec 19, 7:40 PM CSTTSTM WND DMGRusk, TXSHERIFF'S OFFICE REPORTS SEVERAL TREES DOWN, POWER LINES DOWN, AND SOME DAMAGE TO HOMES ON FM ROADS NEAR RUSK, REPORT DETAILS STILL COMING IN AT 835 PM.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Shreveport, LA (KBAD), launched 00:00Z, 1.1 hours before the alert went out and 147 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 00:00Z on 2017-12-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 513 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Shreveport, LA at 00:00Z on 2017-12-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 393 square meters per square second.1939587897Sfc1 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
513 J/kg
Mixed-layer CIN
-10 J/kg
Mixed-layer LCL
542 m above ground
0-6 km bulk shear
72 kt
0-1 km storm-relative helicity
393 m²/s²
0-3 km storm-relative helicity
450 m²/s²
Significant tornado parameter
1.5
Supercell composite
5.9

Open this sounding in Storm Lab

The text

As transmitted.

298 
WFUS54 KSHV 200105
TORSHV
TXC073-347-401-200145-
/O.NEW.KSHV.TO.W.0089.171220T0105Z-171220T0145Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Shreveport LA
705 PM CST TUE DEC 19 2017

The National Weather Service in Shreveport has issued a

* Tornado Warning for...
  Southwestern Rusk County in northeastern Texas...
  Northwestern Nacogdoches County in eastern Texas...
  Central Cherokee County in northeastern Texas...

* Until 745 PM CST
    
* At 705 PM CST, a severe thunderstorm capable of producing a tornado
  was located near Rusk, moving northeast at 45 mph.

  HAZARD...Tornado. 

  SOURCE...Radar indicated rotation. 

  IMPACT...Flying debris will be dangerous to those caught without 
           shelter. Mobile homes will be damaged or destroyed. 
           Damage to roofs, windows, and vehicles will occur.  Tree 
           damage is likely. 

* This dangerous storm will be near...
  Rusk around 710 PM CST. 
  Ponta around 725 PM CST. 
  Sacul around 735 PM CST. 
  New Salem around 740 PM CST. 

Other locations impacted by this tornadic thunderstorm include
Reklaw, Cushing and Gallatin.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

&&

LAT...LON 3167 9520 3179 9528 3204 9495 3180 9478
TIME...MOT...LOC 0105Z 239DEG 25KT 3176 9518 

TORNADO...RADAR INDICATED
HAIL...<.75IN

$$

05

The office that day

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

IssuedProductOfficeCountiesLasted
Dec 19, 6:32 PM CSTRiver Flood WarningSHVGregg58 hr
Dec 19, 6:34 PM CSTSpecial Weather StatementSHVCherokee, Nacogdoches41 min
Dec 19, 6:57 PM CSTSevere Thunderstorm WarningSHVCherokee, Gregg, Harrison, Nacogdoches, Panola, Rusk and 2 more63 min
Dec 19, 7:35 PM CSTTornado WarningSHVCherokee, Nacogdoches, Panola, Rusk, Shelby40 min
Dec 19, 7:44 PM CSTFlash Flood WarningSHVCass, Gregg, Harrison, Marion, Smith, Upshur3 hr
Dec 19, 7:46 PM CSTFlash Flood WarningSHVCherokee, Nacogdoches, Panola, Rusk, Shelby3 hr
Dec 19, 7:50 PM CSTTornado WarningSHVCherokee, Nacogdoches, Rusk40 min
Dec 19, 7:56 PM CSTSevere Thunderstorm WarningSHVCherokee, Gregg, Harrison, Nacogdoches, Panola, Rusk and 2 more64 min
Dec 19, 8:29 PM CSTSpecial Weather StatementSHVPanola46 min
Dec 19, 8:59 PM CSTSpecial Weather StatementSHVPanola, Rusk46 min
Dec 19, 9:49 PM CSTAreal Flood AdvisorySHVHarrison, Panola, Shelby3 hr

Nearby

Tornado Warnings in Texas, 2017Every tornado warning in 2017Tornadoes in 2017

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.