Alert archive / Texas / Tornado Warnings in 2011

Tornado Warning 40, NWS Fort Worth, TX

April 25, 2011Freestone County, Leon County, Texas

NWS Fort Worth, TX issued this tornado warning at Apr 25, 2011, 8:30 PM CDT for Freestone County, Leon County, Texas. It was in force for 45 min. 1 report 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: Apr 25, 2011, 8:30 PM CDT (01:30 UTC)
Expired: Apr 25, 2011, 9:15 PM CDT
In force: 45 min
Issued by: NWS Fort Worth, TX
Area: Storm-based polygon

Counties Freestone County, TX, Leon County, TX

The radar

The Dallas/Ft Worth radar (KFWS), 164 km from the middle of the area, began a volume at 01:32 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
Apr 25, 8:33 PM CDT	TORNADO 0	5 Sw Butler, TX

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
Apr 25, 2:41 PM CDT	Tornado Watch	SPC	9 hr

The nearest sounding before it

Fort Worth, TX (KFWD), launched 00:00Z, 1.5 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: 77 J/kg
Mixed-layer CIN: -195 J/kg
Mixed-layer LCL: 2253 m above ground
0-6 km bulk shear: 68 kt
0-1 km storm-relative helicity: 8 m²/s²
0-3 km storm-relative helicity: 66 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.2

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

215 
WFUS54 KFWD 260130
TORFWD
TXC161-289-260215-
/O.NEW.KFWD.TO.W.0040.110426T0130Z-110426T0215Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE FORT WORTH TX
830 PM CDT MON APR 25 2011

THE NATIONAL WEATHER SERVICE IN FORT WORTH HAS ISSUED A

* TORNADO WARNING FOR...
  FREESTONE COUNTY IN NORTH CENTRAL TEXAS...
  NORTHEASTERN LEON COUNTY IN NORTHEAST TEXAS...

* UNTIL 915 PM CDT

* AT 830 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
  DEVELOPING TORNADO 8 MILES WEST OF OAKWOOD...MOVING SOUTHEAST AT 40
  MPH.

* THE TORNADO WILL BE NEAR...
  OAKWOOD AROUND 840 PM CDT...

THIS WILL IMPACT I-45 BETWEEN MILE MARKERS 183 AND 212.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

MOVE TO AN INTERIOR BATHROOM...CLOSET...OR HALLWAY ON THE LOWEST
FLOOR OF YOUR BUILDING. COVER YOURSELF WITH BLANKETS...PILLOWS...OR A
MATTRESS FOR PROTECTION.

IN ADDITION TO TORNADOES...LARGE HAIL AND DAMAGING WINDS ARE LIKELY
WITH THIS STORM.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1000 PM.

&&

LAT...LON 3133 9566 3140 9599 3183 9645 3201 9606
      3196 9605 3194 9600 3188 9602 3188 9596
      3180 9598 3175 9587 3169 9586 3169 9578
      3165 9579 3161 9577 3166 9574 3162 9571
      3154 9576
TIME...MOT...LOC 0130Z 308DEG 36KT 3161 9595

$$


85/NH

2 follow-up statements

075 
WWUS54 KFWD 260208
SVSFWD

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE FORT WORTH TX
908 PM CDT MON APR 25 2011

TXC161-289-260215-
/O.CON.KFWD.TO.W.0040.000000T0000Z-110426T0215Z/
FREESTONE TX-LEON TX-
908 PM CDT MON APR 25 2011

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 915 PM CDT FOR
NORTHEASTERN LEON AND FREESTONE COUNTIES...

AT 906 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A 
SEVERE THUNDERSTORM CONTINUING ACROSS FREESTONE COUNTY. THERE IS 
ONLY WEAK ROTATION NOTED WITH THIS STORM...BUT A BRIEF TORNADO AS 
WELL AS DAMAGING DOWNBURST WINDS REMAIN POSSIBLE. THIS STORM WAS 
CENTERED NEAR FAIRFIELD...MOVING EAST AT 25 MPH.

ADDITIONAL STRONG THUNDERSTORMS WERE DIMINISHING ACROSS NORTHEASTERN 
LEON COUNTY COUNTY NEAR OAKWOOD. SMALL HAIL AND BRIEF GUSTY WINDS 
REMAIN POSSIBLE IN LEON COUNTY...BUT THE TORNADO POTENTIAL WAS 
DIMINISHING IN THIS AREA. 

THESE STORMS WILL IMPACT I-45 BETWEEN MILE MARKERS 182 AND 212.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1000 PM CDT MONDAY EVENING
FOR EASTERN TEXAS.

&&

LAT...LON 3133 9566 3140 9599 3183 9645 3201 9606
      3196 9605 3194 9600 3188 9602 3188 9596
      3180 9598 3175 9587 3169 9586 3169 9578
      3165 9579 3161 9577 3166 9574 3162 9571
      3154 9576
TIME...MOT...LOC 0206Z 290DEG 23KT 3168 9617

$$

042 
WWUS54 KFWD 260219
SVSFWD

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE FORT WORTH TX
919 PM CDT MON APR 25 2011

TXC161-289-260228-
/O.EXP.KFWD.TO.W.0040.000000T0000Z-110426T0215Z/
FREESTONE TX-LEON TX-
919 PM CDT MON APR 25 2011

...THE TORNADO WARNING FOR NORTHEASTERN LEON AND FREESTONE COUNTIES
EXPIRES AT 915 PM CDT...

AT 918 PM CDT THE SEVERE THUNDERSTORM THAT PROMPTED THE TORNADO
WARNING WEAKENED AND WAS NO LONGER CAPABLE OF PRODUCING A TORNADO.
THE TORNADO WARNING HAS EXPIRED.

RADAR INDICATED THAT HEAVY RAIN...SMALL HAIL...AND GUSTY WINDS WERE 
STILL POSSIBLE FROM THUNDERSTORMS NEAR FAIRFIELD AND 10 MILES 
SOUTHEAST OF FAIRFIELD.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1000 PM CDT MONDAY EVENING
FOR EASTERN TEXAS.

LAT...LON 3133 9566 3140 9599 3183 9645 3201 9606
      3196 9605 3194 9600 3188 9602 3188 9596
      3180 9598 3175 9587 3169 9586 3169 9578
      3165 9579 3161 9577 3166 9574 3162 9571
      3154 9576
TIME...MOT...LOC 0208Z 290DEG 23KT 3167 9616

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 25, 7:11 PM CDT	Tornado Warning	FWD	Freestone, Leon	49 min
Apr 25, 7:17 PM CDT	Severe Thunderstorm Warning	FWD	Henderson	58 min
Apr 25, 7:28 PM CDT	Tornado Warning	FWD	Freestone	19 min
Apr 25, 7:32 PM CDT	Special Weather Statement	FWD	Navarro	28 min
Apr 25, 7:38 PM CDT	Tornado Warning	FWD	Anderson	52 min
Apr 25, 7:51 PM CDT	Tornado Warning	FWD	Freestone, Navarro	39 min
Apr 25, 7:57 PM CDT	Tornado Warning	FWD	Freestone, Leon	33 min
Apr 25, 8:27 PM CDT	Severe Thunderstorm Warning	FWD	Anderson	63 min
Apr 25, 8:42 PM CDT	Areal Flood Advisory	FWD	Anderson, Freestone, Leon	2 hr
Apr 25, 9:21 PM CDT	Special Weather Statement	FWD	Freestone	24 min
Apr 25, 9:29 PM CDT	Special Weather Statement	FWD	Anderson	31 min
Apr 25, 9:40 PM CDT	Special Weather Statement	FWD	Freestone	35 min
Apr 25, 10:13 PM CDT	Special Weather Statement	FWD	Leon	32 min
Apr 25, 10:28 PM CDT	Severe Thunderstorm Warning	FWD	Leon	30 min
Apr 26, 2:37 PM CDT	Special Weather Statement	FWD	Hill	23 min
Apr 26, 2:48 PM CDT	Severe Thunderstorm Warning	FWD	Ellis, Hill, Johnson	57 min
Apr 26, 3:26 PM CDT	Special Weather Statement	FWD	Dallas	34 min
Apr 26, 3:28 PM CDT	Tornado Warning	FWD	Ellis, Navarro	47 min
Apr 26, 3:33 PM CDT	Special Weather Statement	FWD	Robertson	27 min
Apr 26, 3:44 PM CDT	Severe Thunderstorm Warning	FWD	Leon, Robertson	61 min
Apr 26, 3:53 PM CDT	Severe Thunderstorm Warning	FWD	Dallas, Ellis, Kaufman	52 min
Apr 26, 3:54 PM CDT	Severe Thunderstorm Warning	FWD	Milam	51 min
Apr 26, 4:00 PM CDT	Tornado Warning	FWD	Ellis, Henderson, Kaufman	45 min
Apr 26, 4:13 PM CDT	Tornado Warning	FWD	Henderson, Navarro	47 min
Apr 26, 4:15 PM CDT	Severe Thunderstorm Warning	FWD	Ellis, Johnson	60 min
Apr 26, 4:22 PM CDT	Severe Thunderstorm Warning	FWD	Anderson	38 min
Apr 26, 4:28 PM CDT	Severe Thunderstorm Warning	FWD	Falls, Limestone	62 min
Apr 26, 4:32 PM CDT	Tornado Warning	FWD	Leon, Robertson	43 min
Apr 26, 4:40 PM CDT	Severe Thunderstorm Warning	FWD	Milam, Robertson	52 min
Apr 26, 4:41 PM CDT	Tornado Warning	FWD	Henderson, Kaufman, Van Zandt	64 min
Apr 26, 4:43 PM CDT	Severe Thunderstorm Warning	FWD	Leon	32 min
Apr 26, 4:50 PM CDT	Severe Thunderstorm Warning	FWD	Dallas, Ellis, Hill, Johnson	55 min
Apr 26, 4:54 PM CDT	Tornado Warning	FWD	Leon	23 min
Apr 26, 4:56 PM CDT	Severe Thunderstorm Warning	FWD	Hill	30 min
Apr 26, 5:03 PM CDT	Severe Thunderstorm Warning	FWD	Anderson	57 min
Apr 26, 5:09 PM CDT	Tornado Warning	FWD	Ellis, Kaufman	51 min
Apr 26, 5:13 PM CDT	Severe Thunderstorm Warning	FWD	Leon	47 min
Apr 26, 5:19 PM CDT	Severe Thunderstorm Warning	FWD	Ellis, Hill, Navarro	56 min
Apr 26, 5:22 PM CDT	Severe Thunderstorm Warning	FWD	Collin, Dallas, Rockwall	30 min
Apr 26, 5:25 PM CDT	Tornado Warning	FWD	Ellis, Navarro	50 min
Apr 26, 5:26 PM CDT	Severe Thunderstorm Warning	FWD	Fannin, Lamar	32 min
Apr 26, 5:33 PM CDT	Tornado Warning	FWD	Hill, Navarro	42 min
Apr 26, 5:42 PM CDT	Tornado Warning	FWD	Van Zandt	48 min
Apr 26, 5:43 PM CDT	Severe Thunderstorm Warning	FWD	Ellis, Hill, Johnson	62 min
Apr 26, 5:46 PM CDT	Severe Thunderstorm Warning	FWD	Lamar	59 min
Apr 26, 5:50 PM CDT	Tornado Warning	FWD	Henderson, Kaufman, Van Zandt	40 min
Apr 26, 5:54 PM CDT	Severe Thunderstorm Warning	FWD	Bosque, Hill, Limestone, McLennan	66 min
Apr 26, 5:55 PM CDT	Severe Thunderstorm Warning	FWD	Delta, Hopkins, Hunt	65 min
Apr 26, 6:05 PM CDT	Tornado Warning	FWD	Henderson, Navarro	40 min
Apr 26, 6:11 PM CDT	Tornado Warning	FWD	Navarro	49 min
Apr 26, 6:26 PM CDT	Tornado Warning	FWD	Ellis, Navarro	49 min
Apr 26, 6:27 PM CDT	Tornado Warning	FWD	Henderson, Van Zandt	63 min
Apr 26, 6:31 PM CDT	Tornado Warning	FWD	Falls, Limestone, McLennan	44 min
Apr 26, 6:43 PM CDT	Severe Thunderstorm Warning	FWD	Delta, Fannin, Lamar	62 min
Apr 26, 6:43 PM CDT	Tornado Warning	FWD	Henderson	47 min
Apr 26, 6:54 PM CDT	Tornado Warning	FWD	Delta, Hopkins, Lamar	21 min
Apr 26, 6:54 PM CDT	Tornado Warning	FWD	Henderson, Navarro	51 min
Apr 26, 6:55 PM CDT	Severe Thunderstorm Warning	FWD	Ellis	46 min

Nearby

Tornado Warnings in Texas, 2011 Every tornado warning in 2011 Tornadoes in 2011

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.