Alert archive / Texas / Special Weather Statements in 2012

Special Weather Statement, NWS San Angelo, TX

October 13, 2012Concho County, Texas

NWS San Angelo, TX issued this special weather statement at Oct 13, 2012, 10:42 PM CDT for Concho County, Texas. It was in force for 48 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 13, 2012, 10:42 PM CDT (03:42 UTC)
Expired
Oct 13, 2012, 11:30 PM CDT
In force
48 min
Issued by
NWS San Angelo, TX

County Concho County, TX

The radar

The San Angelo radar (KSJT), 59 km from the middle of the area, began a volume at 03:43 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, 3.7 hours before the alert went out and 214 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-pSkew-T log-p diagram, Del Rio, TX at 00:00Z on 2012-10-14Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2651 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Del Rio, TX at 00:00Z on 2012-10-14The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 87 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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.

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What forecasters said that day

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

NWS San Angelo, TX wrote its last area forecast discussion before this special weather statement went out at Oct 13, 6:29 PM CDT, 4 hours 13 minutes earlier.

Area forecast discussion, Oct 13, 6:29 PM CDT, 4 hours 13 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN ANGELO TX
629 PM CDT SAT OCT 13 2012

.DISCUSSION...
/SEE BELOW FOR AVIATION DISCUSSION/

&&

.AVIATION...
A SEVERE THUNDERSTORM WAS MOVING EAST...JUST SOUTH OF THE ABILENE
REGIONAL AIRPORT A 625 PM. HAIL AND WIND GUSTS TO 50 KTS POSSIBLE
THROUGH 1Z

SEVERE THUNDERSTORMS WERE ALSO MOVING OVER THE NORTHERN PART OF
SAN ANGELO...BUT MISSING THE AIRPORT. STRONG WINDS TO 45 KTS FROM
OUTFLOW FORM THE STORMS WILL BE THE MAIN AVIATION DIFFICULT FOR
SAN ANGELO THROUGH 2Z.

THESE STORMS WILL MOVE EAST TOWARD BRADY THIS EVENING...AND HAVE VCTS
AROUND 2Z.

&&

.PREV DISCUSSION... /ISSUED 239 PM CDT SAT OCT 13 2012/

SHORT TERM...
SURFACE TROUGH/DRYLINE EXTENDED JUST EAST OF A FT STOCKTON...
MIDLAND... CHILDRESS LINE THIS AFTERNOON. THUNDERSTORMS WERE
DEVELOPING EAST OF THE DRYLINE...GARDEN CITY TO SNYDER...ROBY TO
HASKELL.

THUNDERSTORMS AND DRYLINE ARE EXPECTED TO MOVE EAST ALONG A SAN
ANGELO... ABILENE... THROCKMORTON LINE AROUND 7 PM. WITH SFC
BASED CAPES OF 2000 J/KG...SOME STORMS LIKELY TO BE SEVERE WITH
LARGE AND DAMAGING WINDS. BULK SHEARS WERE 50-60 KTS ACROSS THE
BIG COUNTRY...WHERE POTENTIAL EXISTS FOR TORNADOES. A TORNADO
WATCH IS IN EFFECT FOR THE BIG COUNTRY UNTIL 8 PM THIS EVENING.
SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR THE REST OF WEST
CENTRAL TEXAS...ALSO UNTIL 8 PM.

THE SURFACE TROUGH/DRYLINE WILL LIKELY MOVE TO A SONORA TO
BROWNWOOD LINE TOWARD MIDNIGHT...WITH A WEAK COLD FRONT MOVING
THROUGH THE REGION AFTER MIDNIGHT AND EARLY SUNDAY MORNING.
KEEPING A SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS EARLY SUNDAY
MORNING...FROM JUNCTION TO SAN SABA. OTHERWISE DRY AND SUNNY ON
SUNDAY WITH NORTH WINDS OF 5 TO 15 MPH.

LONG TERM...
INTRODUCED A SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS TUESDAY
AND TUESDAY...SOUTH AND EAST OF THE CONCHO VALLEY. THIS AS LEVEL
MOISTURE RETURNS AND INTERACTS WITH WEAK UPPER DISTURBANCES. A
COLD FRONT MOVES THROUGH WEDNESDAY...BRINGING DRIER AND COOLER
AIR.

&&

.PRELIMINARY POINT TEMPS/POPS...
ABILENE 	 82  56  81  53  82 /  50  50  10   5   0
SAN ANGELO 	 84  55  83  52  82 /  50  50  10   5   5
JUNCTION 	 85  65  83  53  85 /  30  60  20  10   5

&&

.SJT WATCHES/WARNINGS/ADVISORIES...
NONE.
&&

99/99/04
Hazardous weather outlook, Oct 13, 2:01 PM CDT, 8 hours 41 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE SAN ANGELO TX
201 PM CDT SAT OCT 13 2012

TXZ049-054-064>066-071>073-076>078-098-099-113-114-127-128-139-
140-154-155-168>170-141915-
FISHER-NOLAN-STERLING-COKE-RUNNELS-IRION-TOM GREEN-CONCHO-
CROCKETT-SCHLEICHER-SUTTON-HASKELL-THROCKMORTON-JONES-SHACKELFORD-
TAYLOR-CALLAHAN-COLEMAN-BROWN-MCCULLOCH-SAN SABA-MENARD-KIMBLE-
MASON-
201 PM CDT SAT OCT 13 2012

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF WEST CENTRAL
TEXAS.

.DAY ONE...THIS AFTERNOON AND TONIGHT

SEVERE THUNDERSTORMS ARE POSSIBLE...THIS AFTERNOON AND EVENING.
THE MAIN THREATS WILL BE LARGE HAIL AND DAMAGING WINDS. THERE IS
ALSO THE POTENTIAL FOR TORNADOES...MAINLY ACROSS THE BIG COUNTRY.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL BE NEEDED THIS AFTERNOON AND EVENING.

In the hours before

Special weather statement, Oct 13, 8:42 PM CDT, 2 hours before
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Special weather statement, Oct 13, 9:14 PM CDT, 1 hour 28 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SAN ANGELO TX
914 PM CDT SAT OCT 13 2012

TXZ072-073-077-168-140300-
MENARD TX-SCHLEICHER TX-TOM GREEN TX-CONCHO TX-
914 PM CDT SAT OCT 13 2012

...SIGNIFICANT WEATHER ADVISORY EFFECTIVE UNTIL 1000 PM CDT FOR
MENARD...SCHLEICHER...TOM GREEN AND CONCHO COUNTIES...

AT 910 PM CDT...A STRONG THUNDERSTORM WAS INDICATED BY NATIONAL
WEATHER SERVICE DOPPLER RADAR 17 MILES WEST OF LIVE OAK...OR ABOUT 18
MILES EAST OF CHRISTOVAL...MOVING EAST AT 40 MPH.

* THE STRONG THUNDERSTORM WILL BE NEAR...
  LIVE OAK BY 935 PM CDT
  US-83 NEAR THE MENARD-CONCHO COUNTY LINE BY 945 PM CDT

NICKEL 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 3118 9964 3096 9969 3105 10039 3127 10029
TIME...MOT...LOC 0214Z 277DEG 35KT 3110 10017
Special weather statement, Oct 13, 9:51 PM CDT, 51 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SAN ANGELO TX
951 PM CDT SAT OCT 13 2012

TXZ073-154-168-140330-
MCCULLOCH TX-MENARD TX-CONCHO TX-
951 PM CDT SAT OCT 13 2012

...SIGNIFICANT WEATHER ADVISORY EFFECTIVE UNTIL 1030 PM CDT FOR
MCCULLOCH...MENARD AND CONCHO COUNTIES...

AT 947 PM CDT...A STRONG THUNDERSTORM WAS INDICATED BY NATIONAL
WEATHER SERVICE DOPPLER RADAR 16 MILES SOUTHWEST OF MELVIN...OR ABOUT
12 MILES NORTH OF MENARD...MOVING EAST AT 40 MPH.

* THE STRONG THUNDERSTORM WILL BE NEAR...
  US-190 NEAR THE MENARD-MCCULLOCH COUNTY LINE AND MELVIN BY 1010 PM
  CDT
  THE INTERSECTION OF US-190 AND RANCH ROAD 1311 BY 1020 PM CDT
  BRADY LAKE BY 1025 PM CDT
  BRADY BY 1030 PM CDT

NICKEL 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 3118 9929 3095 9929 3101 9993 3122 9992
TIME...MOT...LOC 0251Z 274DEG 34KT 3109 9977
Special weather statement, Oct 13, 9:54 PM CDT, 48 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SAN ANGELO TX
954 PM CDT SAT OCT 13 2012

TXZ072-073-140345-
TOM GREEN TX-CONCHO TX-
954 PM CDT SAT OCT 13 2012

...SIGNIFICANT WEATHER ADVISORY EFFECTIVE UNTIL 1045 PM CDT FOR TOM
GREEN AND CONCHO COUNTIES...

AT 952 PM CDT...A STRONG THUNDERSTORM WAS INDICATED BY NATIONAL
WEATHER SERVICE DOPPLER RADAR 3 MILES NORTH OF CHRISTOVAL...MOVING
EAST AT 25 MPH.

* THE STRONG THUNDERSTORM WILL BE NEAR...
  VANCOURT BY 1035 PM 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 3141 10017 3135 10004 3109 10009 3111 10061
      3135 10058
TIME...MOT...LOC 0254Z 277DEG 21KT 3124 10048
Local storm report, Oct 13, 10:18 PM CDT, 24 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SAN ANGELO TX
1018 PM CDT SAT OCT 13 2012

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

0325 PM     TSTM WND DMG     6 N STAMFORD            33.03N  99.80W
10/13/2012                   HASKELL            TX   PUBLIC

            ROOF DAMAGE TO HOME JUST WEST OF HIGHWAY 277. A LARGE
            CATTLE TRAILER WAS ALSO MOVED APPROXIMATELY 30 YARDS.

&&

EVENT NUMBER SJT1200267

JOHNSON
Special weather statement, Oct 13, 10:42 PM CDT, 0 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SAN ANGELO TX
1042 PM CDT SAT OCT 13 2012

TXZ073-168-140430-
MENARD TX-CONCHO TX-
1042 PM CDT SAT OCT 13 2012

...SIGNIFICANT WEATHER ADVISORY EFFECTIVE UNTIL 1130 PM CDT FOR
MENARD AND CONCHO COUNTIES...

AT 1038 PM CDT...A STRONG THUNDERSTORM WAS INDICATED BY NATIONAL
WEATHER SERVICE DOPPLER RADAR 13 MILES SOUTHWEST OF EDEN...OR ABOUT
20 MILES NORTHWEST OF MENARD...MOVING EAST AT 30 MPH.

* THE STRONG THUNDERSTORM WILL BE NEAR...
  LIVE OAK BY 1050 PM CDT
  US-83 NEAR THE MENARD-CONCHO COUNTY LINE AND EDEN BY 1100 PM CDT
  THE INTERSECTION OF US-87 AND RANCH ROAD 2134 BY 1110 PM CDT

NICKEL SIZE HAIL AND WIND GUSTS TO 50 MPH ARE LIKELY WITH THIS STORM.
RESIDENTS ARE ENCOURAGED TO MONITOR THE SITUATION CLOSELY AND BE
PREPARED TO TAKE THE PROPER ACTIONS SHOULD A WARNING BE ISSUED.

LAT...LON 3102 10011 3115 10012 3125 10011 3131 9960
      3102 9960
TIME...MOT...LOC 0342Z 263DEG 27KT 3113 9999

JOHNSON

The office that day

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

IssuedProductOfficeCountiesLasted
Oct 13, 7:04 PM CDTSpecial Weather StatementSJTCallahan41 min
Oct 13, 7:08 PM CDTTornado WarningSJTSchleicher37 min
Oct 13, 7:15 PM CDTSevere Thunderstorm WarningSJTTom Green30 min
Oct 13, 7:30 PM CDTTornado WarningSJTSchleicher30 min
Oct 13, 7:55 PM CDTTornado WarningSJTSchleicher17 min
Oct 13, 8:00 PM CDTSpecial Weather StatementSJTIrion45 min
Oct 13, 8:12 PM CDTSevere Thunderstorm WarningSJTMenard, Schleicher33 min
Oct 13, 8:22 PM CDTSevere Thunderstorm WarningSJTIrion, Tom Green38 min
Oct 13, 8:41 PM CDTSpecial Weather StatementSJTMenard34 min
Oct 13, 8:42 PM CDTSpecial Weather StatementSJTRunnels33 min
Oct 13, 8:50 PM CDTSevere Thunderstorm WarningSJTSchleicher, Tom Green25 min
Oct 13, 9:14 PM CDTSpecial Weather StatementSJTConcho46 min
Oct 13, 9:51 PM CDTSpecial Weather StatementSJTMcCulloch39 min
Oct 13, 9:54 PM CDTSpecial Weather StatementSJTTom Green51 min
Oct 13, 11:26 PM CDTSpecial Weather StatementSJTMcCulloch49 min
Oct 13, 11:33 PM CDTSevere Thunderstorm WarningSJTMcCulloch42 min
Oct 14, 12:17 AM CDTSpecial Weather StatementSJTSan Saba28 min
Oct 14, 12:21 AM CDTSpecial Weather StatementSJTMenard54 min
Oct 14, 12:37 AM CDTSevere Thunderstorm WarningSJTSan Saba23 min

Nearby

Special Weather Statements in Texas, 2012Every 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.