Alert archive / Texas / Tornado Warnings in 2018

Tornado Warning 3, NWS Fort Worth, TX

January 21, 2018Henderson County, Navarro County, Texas

NWS Fort Worth, TX issued this tornado warning at Jan 21, 2018, 6:10 PM CST for Henderson County, Navarro County, Texas. It was in force for 35 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Jan 21, 2018, 6:10 PM CST (00:10 UTC)
Expired
Jan 21, 2018, 6:45 PM CST
In force
35 min
Issued by
NWS Fort Worth, TX
Area
Storm-based polygon
Tornado
Radar indicated
Hail
0.75 in

Counties Henderson County, TX, Navarro County, TX

The radar

The Dallas/Ft Worth radar (KFWS), 107 km from the middle of the area, began a volume at 00:10 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
Jan 21, 3:05 PM CSTTornado WatchSPC8 hr

The nearest sounding before it

Fort Worth, TX (KFWD), launched 00:00Z, 0.2 hours before the alert went out and 124 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, Fort Worth, TX at 00:00Z on 2018-01-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 605 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, Fort Worth, TX at 00:00Z on 2018-01-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 144 square meters per square second.1939587897117136Sfc1 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
605 J/kg
Mixed-layer CIN
-39 J/kg
Mixed-layer LCL
1087 m above ground
0-6 km bulk shear
52 kt
0-1 km storm-relative helicity
144 m²/s²
0-3 km storm-relative helicity
194 m²/s²
Significant tornado parameter
0.4
Supercell composite
2.3

Open this sounding in Storm Lab

The text

As transmitted.

389 
WFUS54 KFWD 220010
TORFWD
TXC213-349-220045-
/O.NEW.KFWD.TO.W.0003.180122T0010Z-180122T0045Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Fort Worth TX
610 PM CST SUN JAN 21 2018

The National Weather Service in Fort Worth has issued a

* Tornado Warning for...
  Northwestern Henderson County in central Texas...
  Eastern Navarro County in north central Texas...

* Until 645 PM CST.

* At 609 PM CST, a severe thunderstorm capable of producing a tornado
  was located over Angus, or 7 miles southeast of Corsicana, moving
  northeast at 35 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...
  Kerens around 635 PM CST. 
  Tool and Trinidad around 645 PM CST. 

Other locations impacted by this tornadic thunderstorm include
Mildred, Mustang, Retreat, Goodlow, Powell, Star Harbor, Eureka,
Richland and Oak Valley.

This includes Interstate 45 between mile markers 216 and 233.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to 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 3188 9641 3196 9653 3235 9636 3220 9601
TIME...MOT...LOC 0009Z 216DEG 30KT 3198 9642 

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

$$

30
2 follow-up statements
736 
WWUS54 KFWD 220022
SVSFWD

Severe Weather Statement
National Weather Service Fort Worth TX
622 PM CST SUN JAN 21 2018

TXC213-349-220045-
/O.CON.KFWD.TO.W.0003.000000T0000Z-180122T0045Z/
Henderson TX-Navarro TX-
622 PM CST SUN JAN 21 2018

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 645 PM CST FOR
NORTHWESTERN HENDERSON AND NORTHEASTERN NAVARRO COUNTIES...
    
At 621 PM CST, a severe thunderstorm capable of producing a tornado 
was located near Navarro, or just east of Corsicana, moving 
northeast at 35 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...
  Kerens around 635 PM CST. 
  Tool and Trinidad around 645 PM CST. 

Other locations impacted by this tornadic thunderstorm include
Mildred, Mustang, Retreat, Goodlow, Powell, Eureka and Star Harbor.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! If you are outdoors, in a mobile home, or in a
vehicle, move to the closest substantial shelter now!  Get to an
interior room on the lowest floor of a sturdy building and avoid
windows.

&&

LAT...LON 3195 9632 3204 9649 3233 9631 3221 9604
      3203 9622
TIME...MOT...LOC 0021Z 213DEG 32KT 3206 9635 

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

$$

30
119 
WWUS54 KFWD 220033
SVSFWD

Severe Weather Statement
National Weather Service Fort Worth TX
633 PM CST SUN JAN 21 2018

TXC213-349-220045-
/O.CON.KFWD.TO.W.0003.000000T0000Z-180122T0045Z/
Henderson TX-Navarro TX-
633 PM CST SUN JAN 21 2018

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 645 PM CST FOR
NORTHWESTERN HENDERSON AND NORTHEASTERN NAVARRO COUNTIES...
    
At 632 PM CST, a severe thunderstorm capable of producing a tornado
was located near Kerens, or 11 miles east of Corsicana, moving
northeast at 40 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...
  Tool and Trinidad around 645 PM CST. 

Other locations impacted by this tornadic thunderstorm include
Goodlow and Powell.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! If you are outdoors, in a mobile home, or in a
vehicle, move to the closest substantial shelter now!  Get to an
interior room on the lowest floor of a sturdy building and avoid
windows.

&&

LAT...LON 3205 9624 3213 9640 3232 9630 3221 9604
      3221 9605
TIME...MOT...LOC 0032Z 215DEG 35KT 3215 9628 

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

$$

30

The office that day

Everything else NWS Fort Worth, TX issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jan 21, 6:04 PM CSTSpecial Weather StatementFWDNavarro26 min
Jan 21, 6:14 PM CSTSevere Thunderstorm WarningFWDFannin, Lamar40 min
Jan 21, 6:32 PM CSTSpecial Weather StatementFWDDelta, Hopkins, Rains43 min
Jan 21, 6:41 PM CSTTornado WarningFWDHenderson, Kaufman, Navarro, Van Zandt34 min
Jan 21, 7:11 PM CSTTornado WarningFWDRains, Van Zandt49 min
Jan 21, 7:16 PM CSTSpecial Weather StatementFWDHopkins29 min
Jan 21, 8:06 PM CSTTornado WarningFWDHopkins24 min
Jan 21, 8:12 PM CSTSpecial Weather StatementFWDFannin33 min
Jan 21, 10:01 PM CSTSpecial Weather StatementFWDNavarro29 min
Jan 21, 10:53 PM CSTSpecial Weather StatementFWDFalls37 min
Jan 22, 11:31 AM CSTRed Flag WarningFWDBell, Bosque, Collin, Comanche, Cooke, Coryell and 27 more6 hr

Nearby

Tornado Warnings in Texas, 2018Every tornado warning in 2018Tornadoes 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.