Alert archive / Texas / Special Weather Statements in 2012

Special Weather Statement, NWS San Angelo, TX

October 14, 2012Menard County, Texas

NWS San Angelo, TX issued this special weather statement at Oct 14, 2012, 12:21 AM CDT for Menard County, Texas. It was in force for 54 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: Oct 14, 2012, 12:21 AM CDT (05:21 UTC)
Expired: Oct 14, 2012, 1:15 AM CDT
In force: 54 min
Issued by: NWS San Angelo, TX

County Menard County, TX

The radar

The San Angelo radar (KSJT), 97 km from the middle of the area, began a volume at 05:21 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 nearest sounding before it

Del Rio, TX (KDRT), launched 00:00Z, 5.4 hours before the alert went out and 223 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: 2651 J/kg
Mixed-layer CIN: -83 J/kg
Mixed-layer LCL: 1277 m above ground
0-6 km bulk shear: 52 kt
0-1 km storm-relative helicity: 87 m²/s²
0-3 km storm-relative helicity: 106 m²/s²
Significant tornado parameter: 0.8
Supercell composite: 4.3

Open this sounding in Storm Lab

The text

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

817 
WWUS84 KSJT 140521
SPSSJT

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SAN ANGELO TX
1221 AM CDT SUN OCT 14 2012

TXZ073-154-168-170-140615-
MCCULLOCH TX-MASON TX-MENARD TX-CONCHO TX-
1221 AM CDT SUN OCT 14 2012

...SIGNIFICANT WEATHER ADVISORY EFFECTIVE UNTIL 115 AM CDT FOR
MCCULLOCH...MASON...MENARD AND CONCHO COUNTIES...

AT 1217 AM CDT...A STRONG THUNDERSTORM WAS INDICATED BY NATIONAL
WEATHER SERVICE DOPPLER RADAR 16 MILES NORTHWEST OF HEXT...OR ABOUT 
11 MILES NORTHEAST OF MENARD...MOVING EAST AT 30 MPH. SOME ROADS IN 
THE PATH OF THIS STORM INCLUDE U.S. HIGHWAY 190 AND RANCH ROAD 1311. 

* THE STRONG THUNDERSTORM WILL BE NEAR...
  US-190 NEAR THE MENARD-MCCULLOCH COUNTY LINE BY 1230 AM CDT
  THE INTERSECTION OF US-190 AND RANCH ROAD 1311 BY 1245 AM CDT

DIME SIZE HAIL AND WIND GUSTS TO 50 MPH ARE LIKELY WITH THIS STORM.
HEAVY RAINFALL WILL CAUSE PONDING OF WATER ON AREA ROADWAYS...
ESPECIALLY THOSE IN POOR DRAINAGE AREAS. RESIDENTS ARE ENCOURAGED TO
MONITOR THE SITUATION CLOSELY AND BE PREPARED TO TAKE THE PROPER
ACTIONS SHOULD A WARNING BE ISSUED.

LAT...LON 3110 9938 3083 9944 3098 9983 3117 9973
TIME...MOT...LOC 0521Z 284DEG 25KT 3105 9966

$$
DANIELS

The office that day

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

Issued	Product	Office	Counties	Lasted
Oct 13, 7:04 PM CDT	Special Weather Statement	SJT	Callahan	41 min
Oct 13, 7:08 PM CDT	Tornado Warning	SJT	Schleicher	37 min
Oct 13, 7:15 PM CDT	Severe Thunderstorm Warning	SJT	Tom Green	30 min
Oct 13, 7:30 PM CDT	Tornado Warning	SJT	Schleicher	30 min
Oct 13, 7:55 PM CDT	Tornado Warning	SJT	Schleicher	17 min
Oct 13, 8:00 PM CDT	Special Weather Statement	SJT	Irion	45 min
Oct 13, 8:12 PM CDT	Severe Thunderstorm Warning	SJT	Menard, Schleicher	33 min
Oct 13, 8:22 PM CDT	Severe Thunderstorm Warning	SJT	Irion, Tom Green	38 min
Oct 13, 8:41 PM CDT	Special Weather Statement	SJT	Menard	34 min
Oct 13, 8:42 PM CDT	Special Weather Statement	SJT	Runnels	33 min
Oct 13, 8:50 PM CDT	Severe Thunderstorm Warning	SJT	Schleicher, Tom Green	25 min
Oct 13, 9:14 PM CDT	Special Weather Statement	SJT	Concho	46 min
Oct 13, 9:51 PM CDT	Special Weather Statement	SJT	McCulloch	39 min
Oct 13, 9:54 PM CDT	Special Weather Statement	SJT	Tom Green	51 min
Oct 13, 10:42 PM CDT	Special Weather Statement	SJT	Concho	48 min
Oct 13, 11:26 PM CDT	Special Weather Statement	SJT	McCulloch	49 min
Oct 13, 11:33 PM CDT	Severe Thunderstorm Warning	SJT	McCulloch	42 min
Oct 14, 12:17 AM CDT	Special Weather Statement	SJT	San Saba	28 min
Oct 14, 12:37 AM CDT	Severe Thunderstorm Warning	SJT	San Saba	23 min

Nearby

Special Weather Statements in Texas, 2012 Every special weather statement 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.