Alert archive / Texas / Severe Thunderstorm Warnings in 2014

Severe Thunderstorm Warning 21, NWS San Angelo, TX

April 13, 2014Callahan County, Texas

NWS San Angelo, TX issued this severe thunderstorm warning at Apr 13, 2014, 3:21 PM CDT for Callahan County, Texas. It was in force for 39 min. 3 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 13, 2014, 3:21 PM CDT (20:21 UTC)
Expired: Apr 13, 2014, 4:00 PM CDT
In force: 39 min
Issued by: NWS San Angelo, TX
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

County Callahan County, TX

The radar

The Dyess AFB radar (KDYX), 35 km from the middle of the area, began a volume at 20:23 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 13, 3:25 PM CDT	HAIL 0.88	12 S Baird, TX	NICKEL SIZE HAIL REPORTED 12 MILES SOUTH OF BAIRD.
Apr 13, 3:31 PM CDT	HAIL 1.25	12 S Baird, TX
Apr 13, 4:10 PM CDT	HAIL 1.5	Atwell, TX

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

The nearest sounding before it

Fort Worth, TX (KFWD), launched 12:00Z, 8.4 hours before the alert went out and 205 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: 73 J/kg
Mixed-layer CIN: -284 J/kg
Mixed-layer LCL: 635 m above ground
0-6 km bulk shear: 50 kt
0-1 km storm-relative helicity: 334 m²/s²
0-3 km storm-relative helicity: 439 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

227 
WUUS54 KSJT 132021
SVRSJT
TXC059-132100-
/O.NEW.KSJT.SV.W.0021.140413T2021Z-140413T2100Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SAN ANGELO TX
321 PM CDT SUN APR 13 2014

THE NATIONAL WEATHER SERVICE IN SAN ANGELO HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CENTRAL CALLAHAN COUNTY IN WEST CENTRAL TEXAS...

* UNTIL 400 PM CDT

* AT 319 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED 7 MILES WEST OF
  ROWDEN...MOVING EAST AT 35 MPH.

  HAZARD...60 MPH WIND GUSTS AND QUARTER SIZE HAIL.

  SOURCE...PUBLIC.

  IMPACT...HAIL DAMAGE TO VEHICLES IS EXPECTED. EXPECT WIND DAMAGE TO
           ROOFS...SIDING AND TREES.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  ROWDEN AROUND 330 PM CDT.
  COTTONWOOD AROUND 345 PM CDT.
  ATWELL AROUND 350 PM CDT.

OTHER LOCATIONS IN THE WARNING INCLUDE ADMIRAL.

LAT...LON 3218 9953 3231 9954 3239 9911 3214 9911
TIME...MOT...LOC 2021Z 262DEG 30KT 3224 9943

HAIL...1.00IN
WIND...60MPH

$$

JOHNSON

1 follow-up statement

814 
WWUS54 KSJT 132035
SVSSJT

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SAN ANGELO TX
335 PM CDT SUN APR 13 2014

TXC059-132100-
/O.CON.KSJT.SV.W.0021.000000T0000Z-140413T2100Z/
CALLAHAN TX-
335 PM CDT SUN APR 13 2014

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR CENTRAL
CALLAHAN COUNTY UNTIL 400 PM CDT...

AT 331 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR ROWDEN...AND
MOVING EAST AT 35 MPH.

HAZARD...60 MPH WIND GUSTS AND QUARTER SIZE HAIL.

SOURCE...PUBLIC.

IMPACT...HAIL DAMAGE TO VEHICLES IS EXPECTED. EXPECT WIND DAMAGE TO
         ROOFS...SIDING AND TREES.

THE SEVERE THUNDERSTORM WILL BE NEAR...
  COTTONWOOD AROUND 345 PM CDT.
  ATWELL AROUND 350 PM CDT.

LAT...LON 3219 9941 3232 9945 3239 9911 3218 9911
TIME...MOT...LOC 2035Z 262DEG 30KT 3226 9929

HAIL...1.00IN
WIND...60MPH

$$

JOHNSON

The office that day

Everything else NWS San Angelo, TX issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 13, 9:11 AM CDT	Special Weather Statement	SJT	Brown, Coleman	49 min
Apr 13, 10:00 AM CDT	Special Weather Statement	SJT	Brown	45 min
Apr 13, 11:19 AM CDT	Wind Advisory	SJT	Callahan, Coke, Fisher, Haskell, Jones, Nolan and 4 more	6 hr
Apr 13, 1:43 PM CDT	Special Weather Statement	SJT	Nolan	17 min
Apr 13, 2:00 PM CDT	Special Weather Statement	SJT	Taylor	30 min
Apr 13, 2:07 PM CDT	Severe Thunderstorm Warning	SJT	Nolan, Taylor	38 min
Apr 13, 2:24 PM CDT	Severe Thunderstorm Warning	SJT	Shackelford, Throckmorton	51 min
Apr 13, 2:38 PM CDT	Special Weather Statement	SJT	Callahan	37 min
Apr 13, 2:45 PM CDT	Severe Thunderstorm Warning	SJT	Callahan, Taylor	45 min
Apr 13, 3:16 PM CDT	Special Weather Statement	SJT	Coke	29 min
Apr 13, 3:28 PM CDT	Special Weather Statement	SJT	Runnels	32 min
Apr 13, 3:56 PM CDT	Special Weather Statement	SJT	Runnels	34 min
Apr 13, 4:02 PM CDT	Severe Thunderstorm Warning	SJT	Callahan	13 min
Apr 13, 4:16 PM CDT	Special Weather Statement	SJT	Coleman	29 min
Apr 13, 4:18 PM CDT	Special Weather Statement	SJT	Callahan	27 min
Apr 13, 4:29 PM CDT	Severe Thunderstorm Warning	SJT	Coleman	46 min
Apr 13, 5:01 PM CDT	Severe Thunderstorm Warning	SJT	Brown, Coleman	44 min
Apr 13, 5:08 PM CDT	Special Weather Statement	SJT	Schleicher	37 min
Apr 13, 5:47 PM CDT	Special Weather Statement	SJT	Brown	28 min
Apr 13, 6:16 PM CDT	Special Weather Statement	SJT	McCulloch	29 min

Nearby

Severe Thunderstorm Warnings in Texas, 2014 Every severe thunderstorm warning in 2014

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.