Alert archive / Texas / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 113, NWS Fort Worth, TX

May 4, 2012Coryell County, Hamilton County, Texas

NWS Fort Worth, TX issued this severe thunderstorm warning at May 4, 2012, 10:33 PM CDT for Coryell County, Hamilton County, Texas. It was in force for 57 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: May 4, 2012, 10:33 PM CDT (03:33 UTC)
Expired: May 4, 2012, 11:30 PM CDT
In force: 57 min
Issued by: NWS Fort Worth, TX
Area: Storm-based polygon

Counties Coryell County, TX, Hamilton County, TX

The radar

The Ft Hood radar (KGRK), 103 km from the middle of the area, began a volume at 03:37 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
May 4, 3:49 PM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Fort Worth, TX (KFWD), launched 00:00Z, 3.6 hours before the alert went out and 154 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: 2627 J/kg
Mixed-layer CIN: -48 J/kg
Mixed-layer LCL: 1899 m above ground
0-6 km bulk shear: 35 kt
0-1 km storm-relative helicity: 41 m²/s²
0-3 km storm-relative helicity: 117 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 7.1

Open this sounding in Storm Lab

The text

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

037 
WUUS54 KFWD 050333
SVRFWD
TXC099-193-050430-
/O.NEW.KFWD.SV.W.0113.120505T0333Z-120505T0430Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE FORT WORTH TX
1033 PM CDT FRI MAY 4 2012

THE NATIONAL WEATHER SERVICE IN FORT WORTH HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CORYELL COUNTY IN NORTH CENTRAL TEXAS...
  SOUTHERN HAMILTON COUNTY IN NORTH CENTRAL TEXAS...

* UNTIL 1130 PM CDT

* AT 1033 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
  DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED 6 MILES
  NORTHEAST OF EVANT...MOVING EAST AT 25 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  GATESVILLE AND FORT GATES AROUND 1130 PM...

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.

&&

LAT...LON 3173 9808 3170 9778 3167 9776 3169 9770
      3164 9764 3150 9754 3140 9755 3128 9762
      3127 9804 3146 9818 3144 9823 3154 9832
TIME...MOT...LOC 0333Z 287DEG 20KT 3155 9810

$$

3 follow-up statements

401 
WWUS54 KFWD 050352
SVSFWD

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE FORT WORTH TX
1052 PM CDT FRI MAY 4 2012

TXC193-050402-
/O.CAN.KFWD.SV.W.0113.000000T0000Z-120505T0430Z/
HAMILTON TX-
1052 PM CDT FRI MAY 4 2012

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN HAMILTON COUNTY IS
CANCELLED...

LAT...LON 3166 9780 3169 9770 3164 9764 3150 9754
      3140 9755 3128 9762 3127 9804 3147 9818
TIME...MOT...LOC 0352Z 287DEG 20KT 3150 9794

$$

TXC099-050430-
/O.CON.KFWD.SV.W.0113.000000T0000Z-120505T0430Z/
CORYELL TX-
1052 PM CDT FRI MAY 4 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1130 PM CDT
FOR CORYELL COUNTY...

AT 1052 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED 12 MILES
EAST OF EVANT...MOVING EAST AT 25 MPH.

THE SEVERE THUNDERSTORM WILL BE NEAR...
  GATESVILLE AROUND 1125 PM CDT...
  SOUTH MOUNTAIN AND FORT GATES AROUND 1130 PM CDT...

LAT...LON 3166 9780 3169 9770 3164 9764 3150 9754
      3140 9755 3128 9762 3127 9804 3147 9818
TIME...MOT...LOC 0352Z 287DEG 20KT 3150 9794

$$

376 
WWUS54 KFWD 050412
SVSFWD

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE FORT WORTH TX
1112 PM CDT FRI MAY 4 2012

TXC099-050430-
/O.CON.KFWD.SV.W.0113.000000T0000Z-120505T0430Z/
CORYELL TX-
1112 PM CDT FRI MAY 4 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1130 PM CDT
FOR CENTRAL CORYELL COUNTY...

AT 1112 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED 4 MILES
WEST OF GATESVILLE...MOVING SOUTHEAST AT 30 MPH.

THE SEVERE THUNDERSTORM WILL BE NEAR...
  FORT GATES AND SOUTH MOUNTAIN AROUND 1120 PM CDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3129 9798 3160 9789 3164 9764 3150 9754
      3140 9755 3128 9762
TIME...MOT...LOC 0412Z 303DEG 26KT 3142 9779

$$

743 
WWUS54 KFWD 050422
SVSFWD

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE FORT WORTH TX
1122 PM CDT FRI MAY 4 2012

TXC099-050432-
/O.EXP.KFWD.SV.W.0113.000000T0000Z-120505T0430Z/
CORYELL TX-
1122 PM CDT FRI MAY 4 2012

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL CORYELL COUNTY EXPIRES
AT 1130 PM CDT...

AT 1122 PM CDT THE SEVERE THUNDERSTORM THAT PROMPTED THE WARNING
WEAKENED AND WAS NO LONGER SEVERE.

LAT...LON 3129 9798 3160 9789 3164 9764 3150 9754
      3140 9755 3128 9762
TIME...MOT...LOC 0422Z 303DEG 26KT 3138 9772

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
May 4, 7:09 PM CDT	Tornado Warning	FWD	Hood	22 min
May 4, 7:11 PM CDT	Severe Thunderstorm Warning	FWD	Eastland	38 min
May 4, 7:37 PM CDT	Special Weather Statement	FWD	Montague	23 min
May 4, 7:41 PM CDT	Special Weather Statement	FWD	Parker	34 min
May 4, 7:44 PM CDT	Severe Thunderstorm Warning	FWD	Palo Pinto, Parker	19 min
May 4, 7:54 PM CDT	Severe Thunderstorm Warning	FWD	Hood, Johnson, Parker, Somervell, Tarrant	66 min
May 4, 8:00 PM CDT	Severe Thunderstorm Warning	FWD	Comanche	60 min
May 4, 8:02 PM CDT	Severe Thunderstorm Warning	FWD	Montague	55 min
May 4, 8:25 PM CDT	Severe Thunderstorm Warning	FWD	Erath	50 min
May 4, 8:33 PM CDT	Severe Thunderstorm Warning	FWD	Bosque, Ellis, Hill, Johnson	57 min
May 4, 8:38 PM CDT	Severe Thunderstorm Warning	FWD	Cooke	67 min
May 4, 9:02 PM CDT	Severe Thunderstorm Warning	FWD	Comanche, Mills	58 min
May 4, 9:04 PM CDT	Severe Thunderstorm Warning	FWD	Ellis	26 min
May 4, 9:07 PM CDT	Severe Thunderstorm Warning	FWD	Collin, Cooke, Denton, Grayson	52 min
May 4, 9:12 PM CDT	Severe Thunderstorm Warning	FWD	Bosque, Hamilton	63 min
May 4, 9:26 PM CDT	Special Weather Statement	FWD	Johnson	34 min
May 4, 9:32 PM CDT	Severe Thunderstorm Warning	FWD	Ellis	31 min
May 4, 9:33 PM CDT	Tornado Warning	FWD	Mills	27 min
May 4, 10:02 PM CDT	Severe Thunderstorm Warning	FWD	Hamilton	28 min
May 4, 10:04 PM CDT	Special Weather Statement	FWD	Collin, Denton, Grayson	26 min
May 4, 10:20 PM CDT	High Wind Warning	FWD	Ellis, Johnson	40 min
May 4, 10:22 PM CDT	Special Weather Statement	FWD	Rockwall	23 min
May 4, 10:24 PM CDT	Special Weather Statement	FWD	McLennan	36 min
May 4, 11:14 PM CDT	Severe Thunderstorm Warning	FWD	Freestone, Navarro	38 min
May 4, 11:17 PM CDT	Special Weather Statement	FWD	Lamar	28 min
May 5, 12:52 AM CDT	Special Weather Statement	FWD	Bell	23 min
May 5, 12:59 AM CDT	Special Weather Statement	FWD	Henderson, Navarro	31 min

Nearby

Severe Thunderstorm Warnings in Texas, 2012 Every severe thunderstorm warning in 2012

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.