Alert archive / Texas / Tornado Warnings in 2017

Tornado Warning 7, NWS Fort Worth, TX

January 15, 2017Johnson County, Texas

NWS Fort Worth, TX issued this tornado warning at Jan 15, 2017, 8:04 PM CST for Johnson County, Texas. It was in force for 16 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 15, 2017, 8:04 PM CST (02:04 UTC)
Expired: Jan 15, 2017, 8:20 PM CST
In force: 16 min
Issued by: NWS Fort Worth, TX
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.75 in

County Johnson County, TX

The radar

The Dallas/Ft Worth radar (KFWS), 20 km from the middle of the area, began a volume at 02:06 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.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jan 2, 1:39 AM CST	Severe Thunderstorm Watch	SPC	59 days
Jan 15, 6:00 PM CST	Tornado Watch	SPC	6 hr

The nearest sounding before it

Fort Worth, TX (KFWD), launched 00:00Z, 2.1 hours before the alert went out and 44 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: 211 J/kg
Mixed-layer CIN: -49 J/kg
Mixed-layer LCL: 548 m above ground
0-6 km bulk shear: 44 kt
0-1 km storm-relative helicity: 368 m²/s²
0-3 km storm-relative helicity: 509 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 3.2

Open this sounding in Storm Lab

The text

As transmitted.

165 
WFUS54 KFWD 160204
TORFWD
TXC251-160230-
/O.NEW.KFWD.TO.W.0007.170116T0204Z-170116T0230Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Fort Worth TX
804 PM CST SUN JAN 15 2017

The National Weather Service in Fort Worth has issued a

* Tornado Warning for...
  Northeastern Johnson County in north central Texas...

* Until 830 PM CST
    
* At 802 PM CST, a severe thunderstorm capable of producing a 
  tornado was located just north of highway 67 between Alvarado and 
  Venus. CASA radar indicates that this circulation will approach 
  Pleasant Point and Lillian over the next few minutes.

  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. 

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 3241 9709 3241 9716 3242 9721 3255 9720
      3255 9709
TIME...MOT...LOC 0202Z 186DEG 30KT 3246 9716 

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

$$

Dunn

1 follow-up statement

164 
WWUS54 KFWD 160220
SVSFWD

Severe Weather Statement
National Weather Service Fort Worth TX
820 PM CST SUN JAN 15 2017

TXC251-160229-
/O.CAN.KFWD.TO.W.0007.000000T0000Z-170116T0230Z/
Johnson TX-
820 PM CST SUN JAN 15 2017

...THE TORNADO WARNING FOR NORTHEASTERN JOHNSON COUNTY IS
CANCELLED...
        
The storm which prompted the warning has moved out of the area.
Therefore the warning has been cancelled.  A tornado warning is 
still in effect for southeast Tarrant county.

A tornado watch remains in effect until midnight CST for north
central Texas.

LAT...LON 3241 9709 3241 9716 3242 9721 3255 9720
      3255 9709
TIME...MOT...LOC 0217Z 186DEG 30KT 3261 9714 

$$

Dunn

The office that day

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

Issued	Product	Office	Counties	Lasted
Jan 15, 6:10 PM CST	Tornado Warning	FWD	Bosque	35 min
Jan 15, 6:14 PM CST	Areal Flood Advisory	FWD	Bosque, Hill, Johnson	2 hr
Jan 15, 6:22 PM CST	Tornado Warning	FWD	Bosque, Hill	38 min
Jan 15, 6:23 PM CST	Areal Flood Advisory	FWD	Denton, Tarrant	112 min
Jan 15, 6:26 PM CST	Special Weather Statement	FWD	Denton	64 min
Jan 15, 6:53 PM CST	Tornado Warning Tornado observed	FWD	Hill, Johnson	37 min
Jan 15, 7:23 PM CST	Severe Thunderstorm Warning	FWD	Ellis, Hill, Johnson	52 min
Jan 15, 7:34 PM CST	Special Weather Statement	FWD	Hood, Parker, Tarrant	56 min
Jan 15, 7:45 PM CST	Tornado Warning	FWD	Johnson	30 min
Jan 15, 7:50 PM CST	Severe Thunderstorm Warning	FWD	Dallas, Ellis, Johnson, Tarrant	40 min
Jan 15, 8:06 PM CST	Flash Flood Warning	FWD	Johnson, Tarrant	3 hr
Jan 15, 8:12 PM CST	Special Weather Statement	FWD	Hamilton, Lampasas, Mills	63 min
Jan 15, 8:14 PM CST	Tornado Warning	FWD	Tarrant	31 min
Jan 15, 8:27 PM CST	Special Weather Statement	FWD	Johnson, Tarrant	18 min
Jan 15, 8:33 PM CST	Tornado Warning	FWD	Dallas, Tarrant	27 min
Jan 15, 8:42 PM CST	Special Weather Statement	FWD	Dallas, Denton, Johnson, Somervell, Tarrant	63 min
Jan 15, 9:01 PM CST	Severe Thunderstorm Warning	FWD	Dallas, Tarrant	44 min
Jan 15, 9:11 PM CST	Areal Flood Advisory	FWD	Dallas	3 hr
Jan 15, 9:30 PM CST	Severe Thunderstorm Warning	FWD	Collin, Denton	60 min
Jan 15, 9:32 PM CST	Areal Flood Advisory	FWD	Cooke	3 hr
Jan 15, 9:38 PM CST	Areal Flood Advisory	FWD	Collin	3 hr
Jan 15, 9:51 PM CST	Special Weather Statement	FWD	Coryell	24 min
Jan 15, 9:57 PM CST	Flash Flood Warning	FWD	Dallas	3 hr
Jan 15, 10:01 PM CST	Flash Flood Warning	FWD	Ellis	3 hr
Jan 15, 10:05 PM CST	Special Weather Statement	FWD	Ellis, Kaufman, Navarro, Rockwall	55 min
Jan 15, 10:24 PM CST	Special Weather Statement	FWD	Fannin, Hunt	51 min
Jan 15, 10:34 PM CST	Special Weather Statement	FWD	Coryell	26 min
Jan 15, 10:50 PM CST	Areal Flood Advisory	FWD	Bosque, Coryell, Hill, McLennan	3 hr
Jan 15, 10:58 PM CST	Special Weather Statement	FWD	McLennan	32 min
Jan 15, 11:04 PM CST	Special Weather Statement	FWD	Henderson, Kaufman, Rains, Van Zandt	56 min
Jan 15, 11:16 PM CST	Severe Thunderstorm Warning	FWD	Hopkins, Hunt, Rains	59 min
Jan 15, 11:20 PM CST	Special Weather Statement	FWD	Delta, Hunt, Lamar	55 min
Jan 15, 11:33 PM CST	Special Weather Statement	FWD	McLennan	42 min
Jan 15, 11:35 PM CST	River Flood Warning	FWD	Dallas	17 hr
Jan 15, 11:54 PM CST	Special Weather Statement	FWD	Anderson, Freestone, Henderson, Van Zandt	66 min
Jan 16, 12:33 AM CST	River Flood Warning	FWD	Dallas	38 hr
Jan 16, 12:53 AM CST	Areal Flood Advisory	FWD	Anderson, Freestone, Henderson, Van Zandt	3 hr
Jan 16, 12:57 AM CST	Special Weather Statement	FWD	Henderson	48 min
Jan 16, 1:19 AM CST	Special Weather Statement	FWD	Milam	26 min
Jan 16, 2:10 AM CST	Special Weather Statement	FWD	Robertson	35 min
Jan 16, 2:43 AM CST	Special Weather Statement	FWD	Navarro	32 min
Jan 16, 2:44 AM CST	Dense Fog Advisory	FWD	Bosque, Collin, Comanche, Cooke, Coryell, Dallas and 24 more	7 hr
Jan 16, 3:45 AM CST	Severe Thunderstorm Warning	FWD	Leon	45 min
Jan 16, 3:51 AM CST	Tornado Warning	FWD	Leon	24 min
Jan 16, 8:28 AM CST	River Flood Warning	FWD	Denton	19 hr

Nearby

Tornado Warnings in Texas, 2017 Every tornado warning in 2017 Tornadoes 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.