Alert archive / Texas / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 46, NWS Fort Worth, TX

April 11, 2011Hill County, Texas

NWS Fort Worth, TX issued this severe thunderstorm warning at Apr 11, 2011, 12:55 AM CDT for Hill County, Texas. It was in force for 35 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 11, 2011, 12:55 AM CDT (05:55 UTC)
Expired: Apr 11, 2011, 1:30 AM CDT
In force: 35 min
Issued by: NWS Fort Worth, TX
Area: Storm-based polygon

County Hill County, TX

The radar

The Dallas/Ft Worth radar (KFWS), 70 km from the middle of the area, began a volume at 05:56 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 11, 1:08 AM CDT	TSTM WND DMG	Blum, TX	SEVERAL TREES DOWN IN BLUM

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

Did it verify

Verified. The Iowa Environmental Mesonet's Cow matched one storm report to this severe thunderstorm warning; the first came 13 minutes after it went out.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

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 10, 7:02 PM CDT	Severe Thunderstorm Watch	SPC	8 hr
Apr 10, 11:39 PM CDT	Tornado Watch	SPC	7 hr

The nearest sounding before it

Fort Worth, TX (KFWD), launched 00:00Z, 5.9 hours before the alert went out and 99 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: 637 J/kg
Mixed-layer CIN: -268 J/kg
Mixed-layer LCL: 1994 m above ground
0-6 km bulk shear: 61 kt
0-1 km storm-relative helicity: 150 m²/s²
0-3 km storm-relative helicity: 140 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.

685 
WUUS54 KFWD 110555
SVRFWD
TXC217-110630-
/O.NEW.KFWD.SV.W.0046.110411T0555Z-110411T0630Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE FORT WORTH TX
1255 AM CDT MON APR 11 2011

THE NATIONAL WEATHER SERVICE IN FORT WORTH HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  HILL COUNTY IN NORTH CENTRAL TEXAS...

* UNTIL 130 AM CDT

* AT 1255 AM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
  LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER SIZE
  HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THESE STORMS WERE
  LOCATED ALONG A LINE EXTENDING FROM 14 MILES WEST OF BLUM TO 14
  MILES WEST OF LAKE WHITNEY STATE PARK TO 26 MILES SOUTHWEST OF LAKE
  WHITNEY STATE PARK...AND MOVING EAST AT 55 MPH.

* SEVERE THUNDERSTORMS WILL BE NEAR...
  LAKE WHITNEY STATE PARK AND BLUM AROUND 105 AM
  WHITNEY AROUND 110 AM
  COVINGTON AROUND 115 AM
  ITASCA AND HILLSBORO AROUND 120 AM
  CARL'S CORNER AROUND 125 AM
  BYNUM AROUND 130 AM

THIS WILL IMPACT THE FOLLOWING INTERSTATES...
I-35 BETWEEN MILE MARKERS 355 AND 369...
I-35W BETWEEN MILE MARKERS 1 AND 14...
I-35E BETWEEN MILE MARKERS 1 AND 5.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO A STURDY SHELTER UNTIL THE STORM HAS
PASSED.

IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER IN A STRONG BUILDING AND
STAY INSIDE...AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 500 AM MONDAY MORNING FOR
EASTERN TEXAS. A SEVERE THUNDERSTORM WATCH ALSO REMAINS IN EFFECT
UNTIL 500 AM MONDAY MORNING FOR NORTHEASTERN TEXAS.

&&

LAT...LON 3177 9730 3179 9732 3184 9728 3188 9738
      3189 9737 3193 9742 3198 9739 3204 9749
      3217 9745 3218 9747 3227 9708 3217 9702
      3185 9700 3184 9702 3186 9705 3177 9724
TIME...MOT...LOC 0555Z 270DEG 49KT 3220 9756 3191 9754
          3166 9762

$$


85/NH

1 follow-up statement

249 
WWUS54 KFWD 110614
SVSFWD

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE FORT WORTH TX
114 AM CDT MON APR 11 2011

TXC217-110630-
/O.CON.KFWD.SV.W.0046.000000T0000Z-110411T0630Z/
HILL TX-
114 AM CDT MON APR 11 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 130 AM CDT
FOR HILL COUNTY...

AT 115 AM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER SIZE
HAIL...AND DESTRUCTIVE WINDS IN EXCESS OF 70 MPH.  THESE STORMS WERE
LOCATED ALONG A LINE EXTENDING FROM COVINGTON TO 4 MILES SOUTHEAST OF
WHITNEY TO 16 MILES SOUTHWEST OF AQUILLA...MOVING EAST AT 55 MPH.

SEVERE THUNDERSTORMS WILL BE NEAR...
  ITASCA AND HILLSBORO AROUND 120 AM CDT...
  CARL'S CORNER AND ABBOTT AROUND 125 AM CDT...

THIS WILL IMPACT THE FOLLOWING INTERSTATES...
I-35 BETWEEN MILE MARKERS 355 AND 369...
I-35W BETWEEN MILE MARKERS 1 AND 14...
I-35E BETWEEN MILE MARKERS 1 AND 5.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A TORNADO WATCH REMAINS IN EFFECT UNTIL 500 AM CDT MONDAY MORNING FOR
EASTERN TEXAS.

A SEVERE THUNDERSTORM WATCH ALSO REMAINS IN EFFECT UNTIL 500 AM CDT
MONDAY MORNING FOR NORTHEASTERN TEXAS.

&&

LAT...LON 3177 9730 3179 9732 3184 9728 3188 9738
      3189 9737 3193 9742 3198 9739 3204 9749
      3217 9745 3218 9747 3227 9708 3217 9702
      3185 9700 3184 9702 3186 9705 3177 9724
TIME...MOT...LOC 0615Z 270DEG 49KT 3219 9724 3190 9722
          3166 9730

$$

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Fort Worth, TX wrote its last area forecast discussion before this severe thunderstorm warning went out at Apr 10, 11:32 PM CDT, 1 hour 23 minutes earlier.

Area forecast discussion, Apr 10, 11:32 PM CDT, 1 hour 23 minutes before

AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE FORT WORTH TX
1132 PM CDT SUN APR 10 2011

.UPDATE...
THE SEVERE POTENTIAL WILL SPREAD EASTWARD OVERNIGHT WITH THE
APPROACH OF AN UPPER LEVEL DISTURBANCE. A PREVIOUS UPDATE WAS
DONE TO INCREASE THE POPS ACROSS THE AREAS EAST OF I-35. THE 00Z
NAM AND 01Z HRRR /HIGH RESOLUTION RAPID REFRESH/ MODEL INDICATE
THAT THE THUNDERSTORMS FROM CISCO TO SOUTHWEST OF JUNCTION WILL
MOVE EAST/NORTHEAST ACROSS NORTH TEXAS THROUGH THE OVERNIGHT
HOURS.

58

&&

.PREV UPDATE...
.UPDATE...
WILL UPDATE TO ADD SOME POPS ONE ROW OF COUNTIES FARTHER WEST
SINCE REFLECTIVITY STARTING TO APPEAR IN JACK COUNTY. 84

&&

.PREV DISCUSSION... /ISSUED 340 PM CDT SUN APR 10 2011/
IT WOULD BE MORE APPROPRIATE TO CALL THE SURFACE BOUNDARY THAT HAS
ENTERED OUR NW CWA A WEAK COLD FRONT AND NOT A DRY LINE...AS
PRESSURE RISES HAVE BEEN OCCURRING BEHIND IT WITH SLIGHTLY COOLER
AIR ADVECTING SE. THIS WEAK FRONT IS NOW STALLING ALONG A LINE FROM
NEAR GAINESVILLE TO MINERAL WELLS TO BROWNWOOD. MEANWHILE A
POSITIVE TILT UPPER LEVEL TROUGH WILL BE MOVING THROUGH THE PLAINS
TONIGHT WITH PV AT THE BASE OF THE TROUGH PROVIDING STRONG FORCING
ACROSS OUR REGION. MUCH OF THIS FORCING WILL BE SPENT REMOVING
THE CAP...BUT AS THE WARMER AIR IS LIFTED ALOFT...MID LEVEL LAPSE
RATES WILL SUBSEQUENTLY WEAKEN. CIN SHOULD ERODE ALONG THE FRONT
BY SUNSET AND EXPECT SCATTERED CONVECTION TO DEVELOP THEREAFTER.

THERE WILL BE A SMALL CORRIDOR AND LIMITED TIME WINDOW WHEN
SURFACE BASED CONVECTION IS POSSIBLE. SURFACED BASED CONVECTION
WILL POSE THE GREATEST RISK OF SEVERE WEATHER TONIGHT AS IT WILL
HAVE THE HIGHER INSTABILITY TO WORK WITH. THIS THREAT IS POSSIBLE
/BUT NOT PROBABLE/ ROUGHLY 20 MILES EITHER SIDE OF A LINE FROM
CLEBURNE TO SHERMAN...AND BETWEEN THE HOURS OF 6 AND 9 PM.
OTHERWISE EXPECT MOST OF THE CONVECTION TO BE PRIMARILY ELEVATED
THIS EVENING...WITH UNSTABLE PARCELS GENERALLY ORIGINATING IN THE
750-800 MB LAYER. THESE PARCELS WILL CONTAIN CAPE VALUES AROUND
500-1000J/KG...SO NOT OVERLY HIGH. DEEP LAYER SHEAR IS VERY
STRONG...AND THUS ISOLATED SUPERCELLS WILL BE POSSIBLE EVEN IF
THEY ARE SLIGHTLY ELEVATED. THE CONVECTION THAT DEVELOPS ALONG THE
FRONT SHOULD HEAD EAST AND INTO A REGION OF HIGHER CIN ACROSS THE
EASTERN ZONES AND LIKELY WEAKEN AND PERHAPS DISSIPATE AS STORMS
OUT-RUN THE UPPER LEVEL FORCING. THIS IS WHAT THE RUC/HRRR HAS
BEEN INDICATING. THUS THE BEST POPS AND HIGHEST QPF WILL BE IN A
BAND BISECTING THE CWA FROM SW TO NE...OR JUST EAST OF THE STALLED
FRONT. LATER TONIGHT A PLUME OF HIGHER MOISTURE ALOFT SHOULD
PROVIDE FOR SOME CLOUD COVER AND LIGHT SHOWERS BEHIND THE COLD
FRONT. IN THE DRIER AIR MASS BEHIND THE COLD FRONT...MUCH OF THIS
WILL EVAPORATE...BUT DO HAVE LOW POPS THERE AS WELL. ALL RAIN
SHOULD CLEAR THE AREA WEST TO EAST LATE TONIGHT...BUT WILL HAVE
SOME LOW POPS IN THE FAR EAST EARLY MON AM.

GENERALLY SUNNY SKIES AND MODEST NW WINDS ARE EXPECTED MONDAY WITH
COOLER HIGH TEMPERATURES. SURFACE RIDGE WILL SIT OVER NORTH TEXAS
MONDAY NIGHT AND EXCELLENT RADIATIONAL COOLING SHOULD BRING LOW
TEMPS DOWN INTO THE 40S FOR MOST LOCATIONS OUTSIDE OF THE URBAN
HEAT ISLAND. ANOTHER NICE DAY IS EXPECTED TUESDAY AS WINDS QUIETLY
SWING AROUND TO THE SOUTHEAST. STRONGER SOUTH WINDS AND MORE
MOISTURE/WARMER TEMPERATURES ARE EXPECTED WEDNESDAY AND WEDNESDAY
NIGHT. NEXT UPPER LEVEL SYSTEM WILL MOVE ACROSS THE PLAINS
THURSDAY AND PUSH A FRONT THROUGH HERE THURSDAY EVENING. MOISTURE
LOOKS A BIT TOO LIMITED FOR ANY GOOD RAIN WITH THIS SYSTEM...AND
WILL CONTINUE WITH VERY LOW POPS EAST OF I-35.

LOOKING AT THE BROADER FLOW IT APPEARS A PATTERN CHANGE WILL OCCUR
WITH THE MAIN UPPER HIGHS/LOWS SHIFTING POSITIONS ACROSS THE
NORTHERN HEMISPHERE. THIS LOOKS LIKE IT WILL BRING SOME COOLER AIR
INTO THE REGION FOR A FEW DAYS FRIDAY INTO EARLY NEXT WEEK.
WHETHER THIS PATTERN CHANGE RESULTS IN ANY BETTER CHANCES OF RAIN
REMAINS TO BE SEEN.

TR.92

&&

.PRELIMINARY POINT TEMPS/POPS...
DALLAS-FT. WORTH, TX  60  79  52  81  56 /  80  10   0   0   0
WACO, TX              60  80  48  81  54 /  50  10   0   0   0
PARIS, TX             64  76  48  76  51 /  70  20   0   0   0
DENTON, TX            55  78  43  81  52 /  80   5   0   0   0
MCKINNEY, TX          60  78  43  79  50 /  80  10   0   0   0
DALLAS, TX            62  79  54  81  57 /  80  10   0   0   0
TERRELL, TX           62  77  48  80  54 /  60  10   0   0   0
CORSICANA, TX         64  80  52  80  55 /  50  10   0   0   0
TEMPLE, TX            60  82  49  81  54 /  50  10   0   0   0
MINERAL WELLS, TX     51  78  46  80  51 /  90   5   0   0   0

&&

.FWD WATCHES/WARNINGS/ADVISORIES...
NONE.

&&

 /58

Hazardous weather outlook, Apr 10, 11:59 PM CDT, 56 minutes before

HAZARDOUS WEATHER OUTLOOK...UPDATED
NATIONAL WEATHER SERVICE FORT WORTH TX
1159 PM CDT SUN APR 10 2011

TXZ091>095-100>107-115>123-129>135-141>148-156>162-174-175-120500-
MONTAGUE-COOKE-GRAYSON-FANNIN-LAMAR-YOUNG-JACK-WISE-DENTON-COLLIN-
HUNT-DELTA-HOPKINS-STEPHENS-PALO PINTO-PARKER-TARRANT-DALLAS-
ROCKWALL-KAUFMAN-VAN ZANDT-RAINS-EASTLAND-ERATH-HOOD-SOMERVELL-
JOHNSON-ELLIS-HENDERSON-COMANCHE-MILLS-HAMILTON-BOSQUE-HILL-NAVARRO-
FREESTONE-ANDERSON-LAMPASAS-CORYELL-BELL-MCLENNAN-FALLS-LIMESTONE-
LEON-MILAM-ROBERTSON-
1159 PM CDT SUN APR 10 2011

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTH TEXAS.

.DAY ONE...TONIGHT.
SEVERE THUNDERSTORM WATCH 123 IN EFFECT UNTIL 2 AM FOR COUNTIES
ALONG AND NORTHWEST OF A COMANCHE TO TERRELL LINE.

TORNADO WATCH NUMBER 126 IS IN EFFECT UNTIL 5 AM TO THE SOUTHEAST
OF THE SEVERE THUNDERSTORM WATCH.

SCATTERED THUNDERSTORMS ALONG AND AHEAD OF A COLD FRONT ARE
EXPECTED TO INCREASE IN COVERAGE OVERNIGHT AS THEY SWEEP
EASTWARD ACROSS NORTH TEXAS. DAMAGING DOWNBURST WINDS AND LARGE
HAIL ARE THE PRIMARY SEVERE WEATHER HAZARDS.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY.

THERE IS A CHANCE OF THUNDERSTORMS EAST OF INTERSTATE 35 ON
THURSDAY.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE REQUESTED THROUGH TONIGHT.

In the hours before

Local storm report, Apr 11, 12:19 AM CDT, 36 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE FORT WORTH TX
1219 AM CDT MON APR 11 2011

..TIME..    ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE..    ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1215 AM     TSTM WND GST     POTTSVILLE              31.68N  98.32W
04/11/2011  E80 MPH          HAMILTON           TX   LAW ENFORCEMENT

Local storm report, Apr 11, 12:28 AM CDT, 27 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE FORT WORTH TX
1228 AM CDT MON APR 11 2011

..TIME..    ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE..    ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1215 AM     TSTM WND GST     DENTON                  33.22N  97.15W
04/11/2011  E70 MPH          DENTON             TX   EMERGENCY MNGR

            NEAR I35 AND MAYHILL RD.

Local storm report, Apr 11, 12:35 AM CDT, 20 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE FORT WORTH TX
1235 AM CDT MON APR 11 2011

..TIME..    ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE..    ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1229 AM     HAIL             2 N LITTLE ELM          33.18N  96.97W
04/11/2011  E1.75 INCH       DENTON             TX   AMATEUR RADIO

            GOLFBALL HAIL REPORTED AT HWY 380 AND FM 720

Local storm report, Apr 11, 12:36 AM CDT, 19 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE FORT WORTH TX
1236 AM CDT MON APR 11 2011

..TIME..    ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE..    ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1205 AM     HAIL             CORINTH                 33.15N  97.07W
04/11/2011  E1.00 INCH       DENTON             TX   TRAINED SPOTTER

            CORINTH

Local storm report, Apr 11, 12:38 AM CDT, 17 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE FORT WORTH TX
1238 AM CDT MON APR 11 2011

..TIME..    ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE..    ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1235 AM     TSTM WND GST     HAMILTON                31.70N  98.12W
04/11/2011  M64 MPH          HAMILTON           TX   ASOS

Local storm report, Apr 11, 12:44 AM CDT, 11 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE FORT WORTH TX
1244 AM CDT MON APR 11 2011

..TIME..    ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE..    ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1234 AM     HAIL             PROSPER                 33.23N  96.82W
04/11/2011  E1.75 INCH       COLLIN             TX   AMATEUR RADIO

            PROSPER

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 10, 7:05 PM CDT	Special Weather Statement	FWD	Palo Pinto	25 min
Apr 10, 7:17 PM CDT	Special Weather Statement	FWD	Montague	28 min
Apr 10, 7:31 PM CDT	Severe Thunderstorm Warning	FWD	Jack, Palo Pinto, Parker	59 min
Apr 10, 7:42 PM CDT	Special Weather Statement	FWD	Cooke, Montague	33 min
Apr 10, 7:48 PM CDT	Severe Thunderstorm Warning	FWD	Eastland	57 min
Apr 10, 8:13 PM CDT	Special Weather Statement	FWD	Cooke	32 min
Apr 10, 8:18 PM CDT	Special Weather Statement	FWD	Wise	27 min
Apr 10, 8:32 PM CDT	Special Weather Statement	FWD	Wise	28 min
Apr 10, 8:49 PM CDT	Special Weather Statement	FWD	Eastland, Palo Pinto	26 min
Apr 10, 9:09 PM CDT	Special Weather Statement	FWD	Palo Pinto	36 min
Apr 10, 9:25 PM CDT	Severe Thunderstorm Warning	FWD	Erath, Hood, Palo Pinto, Parker	44 min
Apr 10, 9:32 PM CDT	Severe Thunderstorm Warning	FWD	Comanche, Eastland	46 min
Apr 10, 9:38 PM CDT	Special Weather Statement	FWD	Jack	37 min
Apr 10, 9:47 PM CDT	Tornado Warning	FWD	Parker	22 min
Apr 10, 9:56 PM CDT	Special Weather Statement	FWD	Montague	34 min
Apr 10, 9:59 PM CDT	Severe Thunderstorm Warning	FWD	Parker, Tarrant	35 min
Apr 10, 10:09 PM CDT	Special Weather Statement	FWD	Erath	36 min
Apr 10, 10:16 PM CDT	Severe Thunderstorm Warning	FWD	Montague	59 min
Apr 10, 10:20 PM CDT	Severe Thunderstorm Warning	FWD	Erath	34 min
Apr 10, 10:45 PM CDT	Special Weather Statement	FWD	Grayson	30 min
Apr 10, 11:04 PM CDT	Special Weather Statement	FWD	Eastland	26 min
Apr 10, 11:17 PM CDT	Special Weather Statement	FWD	Denton, Parker, Wise	28 min
Apr 10, 11:22 PM CDT	Severe Thunderstorm Warning	FWD	Mills	68 min
Apr 10, 11:52 PM CDT	Severe Thunderstorm Warning	FWD	Comanche, Coryell, Hamilton, Lampasas, Mills	53 min
Apr 10, 11:53 PM CDT	Severe Thunderstorm Warning	FWD	Dallas, Denton, Tarrant	37 min
Apr 11, 12:05 AM CDT	Severe Thunderstorm Warning	FWD	Grayson	39 min
Apr 11, 12:23 AM CDT	Severe Thunderstorm Warning	FWD	Collin, Denton	52 min
Apr 11, 12:25 AM CDT	Tornado Warning	FWD	Hamilton	20 min
Apr 11, 12:28 AM CDT	Severe Thunderstorm Warning	FWD	Bosque, Coryell, Hamilton	62 min
Apr 11, 12:41 AM CDT	Severe Thunderstorm Warning	FWD	Parker, Tarrant	64 min
Apr 11, 12:47 AM CDT	Severe Thunderstorm Warning	FWD	Fannin, Grayson	58 min
Apr 11, 12:49 AM CDT	Severe Thunderstorm Warning	FWD	Hood, Johnson, Somervell	41 min
Apr 11, 1:15 AM CDT	Tornado Warning	FWD	Johnson	21 min
Apr 11, 1:23 AM CDT	Severe Thunderstorm Warning	FWD	Ellis, Hill, Johnson, Navarro	51 min
Apr 11, 1:34 AM CDT	Severe Thunderstorm Warning	FWD	Dallas	43 min
Apr 11, 1:35 AM CDT	Tornado Warning	FWD	Ellis	25 min
Apr 11, 1:53 AM CDT	Severe Thunderstorm Warning	FWD	Henderson, Kaufman	52 min
Apr 11, 2:01 AM CDT	Tornado Warning	FWD	Dallas, Kaufman	30 min
Apr 11, 2:13 AM CDT	Tornado Warning	FWD	Hunt, Kaufman, Rockwall	35 min
Apr 11, 2:19 AM CDT	Severe Thunderstorm Warning	FWD	Rains, Van Zandt	56 min
Apr 11, 2:38 AM CDT	Severe Thunderstorm Warning	FWD	Delta, Hopkins, Hunt	52 min
Apr 11, 2:59 AM CDT	Special Weather Statement	FWD	Navarro	31 min
Apr 11, 3:27 AM CDT	Special Weather Statement	FWD	Henderson	33 min
Apr 11, 4:07 AM CDT	Special Weather Statement	FWD	Henderson	23 min
Apr 11, 4:14 AM CDT	Special Weather Statement	FWD	Falls	31 min
Apr 11, 5:05 AM CDT	Special Weather Statement	FWD	Milam	25 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.