Alert archive / Texas / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 113, NWS Fort Worth, TX

April 23, 2011Comanche County, Erath County, Texas

NWS Fort Worth, TX issued this severe thunderstorm warning at Apr 23, 2011, 8:59 PM CDT for Comanche County, Erath County, Texas. It was in force for 61 min. 5 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: Apr 23, 2011, 8:59 PM CDT (01:59 UTC)
Expired: Apr 23, 2011, 10:00 PM CDT
In force: 61 min
Issued by: NWS Fort Worth, TX
Area: Storm-based polygon

Counties Comanche County, TX, Erath County, TX

The radar

The Dyess AFB radar (KDYX), 90 km from the middle of the area, began a volume at 01:59 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 23, 9:00 PM CDT	HAIL 1.75	Duster, TX	GOLFBALL SIZE HAIL IN DUSTER
Apr 23, 9:24 PM CDT	HAIL 1.25	Dublin, TX
Apr 23, 9:25 PM CDT	HAIL 1	Dublin, TX	QUARTER SIZE HAIL IN DUBLIN
Apr 23, 10:06 PM CDT	HAIL 2.75	1 W Beattie, TX	BASEBALL SIZE HAIL JUST WEST OF BEATTIE
Apr 23, 10:10 PM CDT	HAIL 2.75	1 W Sidney, TX	GOLFBALL TO BASEBALL SIZE HAIL 1 MILE WEST OF SIDNEY

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 23, 3:05 PM CDT	Severe Thunderstorm Watch	SPC	9 hr

The nearest sounding before it

Fort Worth, TX (KFWD), launched 00:00Z, 2.0 hours before the alert went out and 121 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: 2261 J/kg
Mixed-layer CIN: -50 J/kg
Mixed-layer LCL: 1738 m above ground
0-6 km bulk shear: 39 kt
0-1 km storm-relative helicity: 138 m²/s²
0-3 km storm-relative helicity: 130 m²/s²
Significant tornado parameter: 0.4
Supercell composite: 7.5

Open this sounding in Storm Lab

The text

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

485 
WUUS54 KFWD 240159
SVRFWD
TXC093-143-240300-
/O.NEW.KFWD.SV.W.0113.110424T0159Z-110424T0300Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE FORT WORTH TX
859 PM CDT SAT APR 23 2011

THE NATIONAL WEATHER SERVICE IN FORT WORTH HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  COMANCHE COUNTY IN NORTH CENTRAL TEXAS...
  ERATH COUNTY IN NORTH CENTRAL TEXAS...

* UNTIL 1000 PM CDT

* AT 859 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING BASEBALL SIZE HAIL...AND
  DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED NEAR DE
  LEON...AND MOVING EAST AT 25 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  DUBLIN AROUND 915 PM
  HUCKABAY AROUND 930 PM
  STEPHENVILLE AROUND 940 PM
  MORGAN MILL AROUND 950 PM

THIS WILL IMPACT I-20 BETWEEN MILE MARKERS 367 AND 369.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO A STURDY SHELTER AND STAY AWAY FROM
WINDOWS UNTIL THE STORM HAS PASSED.

&&

LAT...LON 3230 9848 3252 9840 3252 9807 3250 9805
      3209 9788 3194 9832 3181 9875 3209 9892
TIME...MOT...LOC 0159Z 257DEG 20KT 3213 9847

$$

2 follow-up statements

525 
WWUS54 KFWD 240221
SVSFWD

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE FORT WORTH TX
921 PM CDT SAT APR 23 2011

TXC093-143-240300-
/O.CON.KFWD.SV.W.0113.000000T0000Z-110424T0300Z/
ERATH TX-COMANCHE TX-
921 PM CDT SAT APR 23 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1000 PM CDT
FOR NORTHERN COMANCHE AND ERATH COUNTIES...

AT 921 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING GOLF BALL SIZE HAIL...AND
DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED 5 MILES
NORTH OF DUBLIN...MOVING EAST AT 25 MPH.

THE SEVERE THUNDERSTORM WILL BE NEAR...
  HUCKABAY AROUND 930 PM CDT...
  STEPHENVILLE AROUND 940 PM CDT...
  MORGAN MILL AROUND 955 PM CDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 PM CDT
SATURDAY EVENING FOR NORTHEASTERN TEXAS.

&&

LAT...LON 3221 9866 3225 9847 3236 9833 3251 9825
      3252 9807 3250 9805 3209 9788 3194 9832
      3187 9878 3209 9892
TIME...MOT...LOC 0221Z 257DEG 20KT 3216 9833

$$

633 
WWUS54 KFWD 240232
SVSFWD

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE FORT WORTH TX
932 PM CDT SAT APR 23 2011

TXC093-143-240300-
/O.CON.KFWD.SV.W.0113.000000T0000Z-110424T0300Z/
ERATH TX-COMANCHE TX-
932 PM CDT SAT APR 23 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1000 PM CDT
FOR NORTHERN COMANCHE AND ERATH COUNTIES...

AT 932 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING BASEBALL SIZE HAIL...AND
DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED 12 MILES
NORTHWEST OF COMANCHE...MOVING SOUTHEAST AT 10 MPH.

A SECOND STORM NEAR DUBLIN...ALSO IN THE WARNED AREA...IS CAPABLE OR 
PRODUCING HAIL TO THE SIZE OF QUARTERS.

THE SEVERE THUNDERSTORM WILL BE NEAR...
  COMANCHE AROUND 1000 PM CDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 PM CDT
SATURDAY EVENING FOR NORTHEASTERN TEXAS.

&&

LAT...LON 3221 9866 3225 9847 3236 9833 3251 9825
      3252 9807 3250 9805 3209 9788 3194 9832
      3187 9878 3209 9892
TIME...MOT...LOC 0232Z 298DEG 11KT 3198 9878

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 23, 7:14 PM CDT	Areal Flood Advisory	FWD	Cooke, Grayson, Jack, Montague, Wise	117 min
Apr 23, 7:23 PM CDT	Severe Thunderstorm Warning	FWD	Cooke, Montague	53 min
Apr 23, 7:24 PM CDT	Severe Thunderstorm Warning	FWD	Jack, Wise	66 min
Apr 23, 7:27 PM CDT	Areal Flood Advisory	FWD	Comanche, Eastland, Erath, Palo Pinto, Parker, Stephens	3 hr
Apr 23, 7:27 PM CDT	Severe Thunderstorm Warning	FWD	Palo Pinto, Parker	78 min
Apr 23, 7:28 PM CDT	Tornado Warning	FWD	Cooke, Grayson	47 min
Apr 23, 7:29 PM CDT	Tornado Warning	FWD	Eastland, Erath, Palo Pinto	34 min
Apr 23, 7:37 PM CDT	Tornado Warning	FWD	Comanche, Eastland	38 min
Apr 23, 7:52 PM CDT	Severe Thunderstorm Warning	FWD	Cooke, Denton	53 min
Apr 23, 7:59 PM CDT	Severe Thunderstorm Warning	FWD	Comanche, Eastland, Erath	61 min
Apr 23, 8:10 PM CDT	Severe Thunderstorm Warning	FWD	Grayson	50 min
Apr 23, 8:23 PM CDT	Tornado Warning	FWD	Comanche	52 min
Apr 23, 8:32 PM CDT	Severe Thunderstorm Warning	FWD	Collin, Denton	37 min
Apr 23, 9:08 PM CDT	Tornado Warning	FWD	Comanche, Erath	29 min
Apr 23, 9:28 PM CDT	Tornado Warning	FWD	Comanche	47 min
Apr 23, 9:34 PM CDT	Severe Thunderstorm Warning	FWD	Fannin, Grayson	56 min
Apr 23, 9:50 PM CDT	Special Weather Statement	FWD	Collin, Dallas, Denton, Tarrant	85 min
Apr 23, 9:55 PM CDT	Severe Thunderstorm Warning	FWD	Erath, Hood, Palo Pinto, Parker, Somervell	65 min
Apr 23, 10:13 PM CDT	Severe Thunderstorm Warning	FWD	Comanche	62 min
Apr 23, 10:34 PM CDT	Areal Flood Advisory	FWD	Comanche, Erath	3 hr
Apr 23, 10:42 PM CDT	Severe Thunderstorm Warning	FWD	Denton, Tarrant	48 min
Apr 23, 11:19 PM CDT	Severe Thunderstorm Warning	FWD	Collin, Dallas, Denton	56 min
Apr 23, 11:36 PM CDT	Severe Thunderstorm Warning	FWD	Comanche, Erath	29 min
Apr 24, 1:09 AM CDT	Special Weather Statement	FWD	Dallas, Tarrant	51 min
Apr 24, 1:49 PM CDT	Fire Weather Watch	FWD	Comanche, Eastland, Erath, Hamilton, Jack, Mills and 3 more	15 hr
Apr 24, 3:17 PM CDT	Special Weather Statement	FWD	Eastland, Stephens	28 min
Apr 24, 3:56 PM CDT	Severe Thunderstorm Warning	FWD	Stephens	64 min
Apr 24, 4:32 PM CDT	Severe Thunderstorm Warning	FWD	Stephens	28 min
Apr 24, 4:47 PM CDT	Special Weather Statement	FWD	Palo Pinto	28 min
Apr 24, 4:56 PM CDT	Tornado Warning	FWD	Palo Pinto, Stephens	49 min
Apr 24, 5:18 PM CDT	Severe Thunderstorm Warning	FWD	Jack, Palo Pinto	42 min
Apr 24, 5:56 PM CDT	Severe Thunderstorm Warning	FWD	Eastland, Stephens	64 min
Apr 24, 5:59 PM CDT	Severe Thunderstorm Warning	FWD	Jack, Palo Pinto, Parker, Wise	61 min
Apr 24, 6:22 PM CDT	Tornado Warning	FWD	Eastland, Stephens	38 min
Apr 24, 6:33 PM CDT	Special Weather Statement	FWD	Denton, Tarrant	27 min
Apr 24, 6:37 PM CDT	Severe Thunderstorm Warning	FWD	Denton, Parker, Tarrant, Wise	38 min
Apr 24, 6:55 PM CDT	Tornado Warning	FWD	Eastland, Erath, Palo Pinto, Stephens	50 min
Apr 24, 6:59 PM CDT	Special Weather Statement	FWD	Cooke	31 min

Nearby

Severe Thunderstorm Warnings in Texas, 2011 Every severe thunderstorm warning 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.