Alert archive / Texas / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 21, NWS Fort Worth, TX

February 20, 2017Falls County, Limestone County, Texas

NWS Fort Worth, TX issued this severe thunderstorm warning at Feb 20, 2017, 1:19 AM CST for Falls County, Limestone County, Texas. It was in force for 56 min. 4 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: Feb 20, 2017, 1:19 AM CST (07:19 UTC)
Expired: Feb 20, 2017, 2:15 AM CST
In force: 56 min
Issued by: NWS Fort Worth, TX
Area: Storm-based polygon
Hail: 0.75 in
Wind: 70.0 mph

Counties Falls County, TX, Limestone County, TX

The radar

The Ft Hood radar (KGRK), 107 km from the middle of the area, began a volume at 07:20 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

Time	Report	Where	Remark
Feb 20, 1:20 AM CST	TSTM WND DMG	3 Se Blue Ridge, TX	HEAVY WIND DAMAGE REPORTED BETWEEN BLUE RIDGE AND BREMOND
Feb 20, 1:30 AM CST	HAIL 0.88	3 S Kosse, TX	HWY 14 3 MILES SOUTH OF KOSSE
Feb 20, 1:33 AM CST	TSTM WND DMG	3 S Kosse, TX	CARPORT TORN UP AND PICKUP DAMAGED HWY 14 AND LCR 277
Feb 20, 2:22 AM CST	TSTM WND DMG	2 Sw Kosse, TX	TREES DOWN BETWEEN KOSSE AND BREMOND ON HWY 14

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

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

The nearest sounding before it

Fort Worth, TX (KFWD), launched 00:00Z, 7.3 hours before the alert went out and 182 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: 758 J/kg
Mixed-layer CIN: -28 J/kg
Mixed-layer LCL: 896 m above ground
0-6 km bulk shear: 59 kt
0-1 km storm-relative helicity: 209 m²/s²
0-3 km storm-relative helicity: 274 m²/s²
Significant tornado parameter: 1.2
Supercell composite: 10.5

Open this sounding in Storm Lab

The text

As transmitted.

723 
WUUS54 KFWD 200719
SVRFWD
TXC145-293-200815-
/O.NEW.KFWD.SV.W.0021.170220T0719Z-170220T0815Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Fort Worth TX
119 AM CST MON FEB 20 2017

The National Weather Service in Fort Worth has issued a

* Severe Thunderstorm Warning for...
  Southeastern Limestone County in central Texas...
  East central Falls County in central Texas...

* Until 215 AM CST.

* At 118 AM CST, a severe thunderstorm was located over Bremond, or
  14 miles southeast of Marlin, moving northeast at 40 mph.

  HAZARD...70 mph wind gusts. 

  SOURCE...Radar indicated. 

  IMPACT...Expect considerable tree damage. Damage is likely to 
           mobile homes, roofs, and outbuildings. 

* Locations impacted include...
  Thornton and Kosse. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection get inside a sturdy structure and stay away from
windows.

&&

LAT...LON 3123 9682 3157 9634 3141 9624 3138 9632
      3135 9632 3115 9675
TIME...MOT...LOC 0718Z 238DEG 33KT 3120 9668 

HAIL...<.75IN
WIND...70MPH
 
$$

24-Bain

3 follow-up statements

218 
WWUS54 KFWD 200724
SVSFWD

Severe Weather Statement
National Weather Service Fort Worth TX
124 AM CST MON FEB 20 2017

TXC145-293-200815-
/O.CON.KFWD.SV.W.0021.000000T0000Z-170220T0815Z/
Limestone TX-Falls TX-
124 AM CST MON FEB 20 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 215 AM CST
FOR SOUTHEASTERN LIMESTONE AND EAST CENTRAL FALLS COUNTIES...

At 123 AM CST, a severe thunderstorm was located near Bremond, or 16
miles east of Marlin, moving northeast at 40 mph.

HAZARD...70 mph wind gusts. 

SOURCE...Radar indicated. 

IMPACT...Expect considerable tree damage. Damage is likely to mobile 
         homes, roofs, and outbuildings. 

Locations impacted include...
Kosse.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection stay inside a sturdy structure and keep away from
windows.

Intense thunderstorm lines can produce brief tornadoes and widespread
significant wind damage. Although a tornado is not immediately
likely, it is best to move to an interior room on the lowest floor of
a building. This storm may cause serious injury and significant
property damage.

&&

LAT...LON 3117 9670 3126 9677 3157 9634 3141 9624
      3138 9632 3135 9632
TIME...MOT...LOC 0723Z 237DEG 33KT 3122 9664 

TORNADO...POSSIBLE
HAIL...<.75IN
WIND...70MPH
 
$$

24-Bain

252 
WWUS54 KFWD 200740
SVSFWD

Severe Weather Statement
National Weather Service Fort Worth TX
140 AM CST MON FEB 20 2017

TXC145-200749-
/O.CAN.KFWD.SV.W.0021.000000T0000Z-170220T0815Z/
Falls TX-
140 AM CST MON FEB 20 2017

...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL FALLS COUNTY IS
CANCELLED...
    
The severe thunderstorm which prompted the warning has ! moved out 
of the warned area, therefore the warning has been cancelled for 
Falls County.

LAT...LON 3126 9652 3138 9660 3157 9634 3141 9624
      3138 9632 3135 9632
TIME...MOT...LOC 0739Z 236DEG 37KT 3135 9642 

$$

TXC293-200815-
/O.CON.KFWD.SV.W.0021.000000T0000Z-170220T0815Z/
Limestone TX-
140 AM CST MON FEB 20 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 215 AM CST
FOR SOUTHEASTERN LIMESTONE COUNTY...

At 139 AM CST, a severe thunderstorm was located 13 miles southeast
of Groesbeck, moving northeast at 40 mph.

HAZARD...70 mph wind gusts. 

SOURCE...Radar indicated. 

IMPACT...Expect considerable tree damage. Damage is likely to mobile 
         homes, roofs, and outbuildings. 

This severe thunderstorm will remain over mainly rural areas of
southeastern Limestone County.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection stay inside a sturdy structure and keep away from
windows.

Intense thunderstorm lines can produce brief tornadoes and widespread
significant wind damage. Although a tornado is not immediately
likely, it is best to move to an interior room on the lowest floor of
a building. This storm may cause serious injury and significant
property damage.

&&

LAT...LON 3126 9652 3138 9660 3157 9634 3141 9624
      3138 9632 3135 9632
TIME...MOT...LOC 0739Z 236DEG 37KT 3135 9642 

TORNADO...POSSIBLE
HAIL...<.75IN
WIND...70MPH
 
$$

24-Bain

678 
WWUS54 KFWD 200814
SVSFWD

Severe Weather Statement
National Weather Service Fort Worth TX
214 AM CST MON FEB 20 2017

TXC293-200824-
/O.EXP.KFWD.SV.W.0021.000000T0000Z-170220T0815Z/
Limestone TX-
214 AM CST MON FEB 20 2017

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN LIMESTONE COUNTY
WILL EXPIRE AT 215 AM CST...
        
The storm which prompted the warning has moved out of the area.
Therefore the warning will be allowed to expire.  However, heavy 
rain is still possible with this thunderstorm.

LAT...LON 3126 9652 3138 9660 3157 9634 3141 9624
      3138 9632 3135 9632
TIME...MOT...LOC 0814Z 238DEG 33KT 3151 9613 

$$

24-Bain

The office that day

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

Issued	Product	Office	Counties	Lasted
Feb 19, 6:21 PM CST	Special Weather Statement	FWD	Young	24 min
Feb 19, 7:02 PM CST	Areal Flood Advisory	FWD	Jack, Young	3 hr
Feb 19, 8:46 PM CST	Flash Flood Warning	FWD	Young	3 hr
Feb 19, 9:14 PM CST	Special Weather Statement	FWD	Jack	16 min
Feb 19, 9:45 PM CST	Areal Flood Advisory	FWD	Jack	3 hr
Feb 19, 11:45 PM CST	Areal Flood Warning	FWD	Young	6 hr
Feb 19, 11:52 PM CST	Special Weather Statement	FWD	Coryell	38 min
Feb 20, 12:24 AM CST	Special Weather Statement	FWD	Dallas	36 min
Feb 20, 12:30 AM CST	Tornado Warning	FWD	Milam	30 min
Feb 20, 12:52 AM CST	Severe Thunderstorm Warning	FWD	Milam	35 min
Feb 20, 1:00 AM CST	Special Weather Statement	FWD	Collin, Dallas, Ellis, Hunt, Kaufman, Navarro and 1 more	60 min
Feb 20, 1:10 AM CST	Severe Thunderstorm Warning	FWD	Robertson	44 min
Feb 20, 1:38 AM CST	Severe Thunderstorm Warning	FWD	Freestone, Leon, Limestone, Robertson	67 min
Feb 20, 1:48 AM CST	Special Weather Statement	FWD	Freestone, Limestone	27 min
Feb 20, 2:28 AM CST	Special Weather Statement	FWD	Anderson, Henderson	62 min
Feb 20, 3:26 AM CST	River Flood Warning	FWD	Dallas	15 hr
Feb 20, 6:10 AM CST	Areal Flood Advisory	FWD	Falls, Freestone, Leon, Limestone, Milam, Robertson	3 hr

Nearby

Severe Thunderstorm Warnings in Texas, 2017 Every severe thunderstorm warning 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.