Alert archive / Texas / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 8, NWS San Angelo, TX

March 19, 2012McCulloch County, San Saba County, Texas

NWS San Angelo, TX issued this severe thunderstorm warning at Mar 19, 2012, 5:52 PM CDT for McCulloch County, San Saba County, Texas. It was in force for 38 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: Mar 19, 2012, 5:52 PM CDT (22:52 UTC)
Expired: Mar 19, 2012, 6:30 PM CDT
In force: 38 min
Issued by: NWS San Angelo, TX
Area: Storm-based polygon

Counties McCulloch County, TX, San Saba County, TX

The radar

The San Angelo radar (KSJT), 139 km from the middle of the area, began a volume at 22:53 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
Mar 19, 6:13 PM CDT	HAIL 1.75	2 N Pontotoc, TX

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 21 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
Mar 19, 2:39 PM CDT	Tornado Watch	SPC	7 hr

The nearest sounding before it

Fort Worth, TX (KFWD), launched 12:00Z, 10.9 hours before the alert went out and 243 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: 1782 J/kg
Mixed-layer CIN: -18 J/kg
Mixed-layer LCL: 509 m above ground
0-6 km bulk shear: 35 kt
0-1 km storm-relative helicity: 318 m²/s²
0-3 km storm-relative helicity: 447 m²/s²
Significant tornado parameter: 3.3
Supercell composite: 17.2

Open this sounding in Storm Lab

The text

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

505 
WUUS54 KSJT 192252
SVRSJT
TXC307-411-192330-
/O.NEW.KSJT.SV.W.0008.120319T2252Z-120319T2330Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SAN ANGELO TX
552 PM CDT MON MAR 19 2012

THE NATIONAL WEATHER SERVICE IN SAN ANGELO HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EASTERN MCCULLOCH COUNTY IN WEST CENTRAL TEXAS...
  WESTERN SAN SABA COUNTY IN WEST CENTRAL TEXAS...

* UNTIL 630 PM CDT

* AT 548 PM CDT...SEVERE THUNDERSTORMS WERE ALONG A LINE EXTENDING   
  FROM 2 MILES NORTH OF BRADY LAKE TO 13 MILES NORTH OF              
  MASON...MOVING EAST NORTHEAST AT 40 MPH.

  STORM HAZARDS INCLUDE...
  QUARTER SIZE HAIL.
  DAMAGING WINDS IN EXCESS OF 60 MPH.

  WITH POSSIBLE STORM IMPACTS...
  A FEW VEHICLE DENTS...
  MINOR ROOF AND PLASTIC SIGN DAMAGE...
  SOME TREE LIMB DAMAGE...WEAKENED TREES TOPPLED...
  UNSECURED LIGHT OBJECTS BLOWN AROUND...
  SCATTERED POWER OUTAGES POSSIBLE...
  POTENTIALLY DEADLY LIGHTNING.

* SEVERE THUNDERSTORMS WILL BE NEAR...
  ROCHELLE BY 605 PM CDT...
  PLACID AND US-190 NEAR THE MCCULLOCH-SAN SABA COUNTY LINE BY 615 PM
  CDT...
  HALL BY 620 PM CDT...
  ELM GROVE...CHEROKEE...RICHLAND SPRINGS AND ALGERITA BY 625 PM
  CDT...
  LOCKER AND SKEETERVILLE BY 630 PM CDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1000 PM CDT MONDAY EVENING
FOR WEST CENTRAL TEXAS.

&&

LAT...LON 3092 9909 3094 9910 3094 9928 3122 9947
      3148 9902 3148 9899 3146 9897 3147 9894
      3144 9893 3144 9891 3092 9865
TIME...MOT...LOC 2252Z 241DEG 35KT 3119 9936 3094 9911

$$

JOHNSON

1 follow-up statement

228 
WWUS54 KSJT 192316
SVSSJT

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SAN ANGELO TX
616 PM CDT MON MAR 19 2012

TXC307-192325-
/O.CAN.KSJT.SV.W.0008.000000T0000Z-120319T2330Z/
MCCULLOCH TX-
616 PM CDT MON MAR 19 2012

...THE SEVERE THUNDERSTORM WARNING FOR EASTERN MCCULLOCH COUNTY IS
CANCELLED...

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1000 PM CDT MONDAY EVENING
FOR WEST CENTRAL TEXAS.

LAT...LON 3092 9865 3091 9881 3093 9909 3134 9909
      3143 9900 3147 9894 3144 9893 3144 9891
TIME...MOT...LOC 2315Z 241DEG 35KT 3126 9905 3096 9889

$$

TXC411-192330-
/O.CON.KSJT.SV.W.0008.000000T0000Z-120319T2330Z/
SAN SABA TX-
616 PM CDT MON MAR 19 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 630 PM CDT
FOR WESTERN SAN SABA COUNTY...

AT 611 PM CDT...  SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE 
EXTENDING FROM 9 MILES WEST OF RICHLAND SPRINGS TO 14 MILES WEST OF 
CHEROKEE...MOVING NORTHEAST AT 40 MPH.

  STORM HAZARDS INCLUDE...
  PING PONG BALL SIZE HAIL
  DAMAGING WINDS IN EXCESS OF 60 MPH.

  WITH POSSIBLE STORM IMPACTS...
  VEHICLE DINGS...
  MINOR DAMAGE TO ROOFS...
  DAMAGE TO TREE LIMBS...
  LIGHT OBJECTS BLOWN AROUND...

SEVERE THUNDERSTORMS WILL BE NEAR...
  SKEETERVILLE AND RICHLAND SPRINGS BY 625 PM CDT...
  LOCKER...CHEROKEE AND ALGERITA BY 630 PM CDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1000 PM CDT MONDAY EVENING
FOR WEST CENTRAL TEXAS.

&&

LAT...LON 3092 9865 3091 9881 3093 9909 3134 9909
      3143 9900 3147 9894 3144 9893 3144 9891
TIME...MOT...LOC 2315Z 241DEG 35KT 3126 9905 3096 9889

$$

JOHNSON

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 San Angelo, TX wrote its last area forecast discussion before this severe thunderstorm warning went out at Mar 19, 3:07 PM CDT, 2 hours 45 minutes earlier.

Area forecast discussion, Mar 19, 3:07 PM CDT, 2 hours 45 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN ANGELO TX
307 PM CDT MON MAR 19 2012

.SHORT TERM...
BUSY WITH ACTIVE WEATHER THIS AFTERNOON. TORNADO WATCH 85 UNTIL 10
PM FOR AREAS ALONG AND EAST OF A COLD FRONT FROM JUNO TO SONORA TO
COLEMAN. POTENTIAL FOR TORNADOES AND LARGE HAIL. LOCALLY HEAVY
RAINFALL POSSIBLE ALSO AS STORM TRAIN NORTHEAST ALONG THE FRONT.
SB CAPES OVER 2500 J/KG AND 0 TO 6 KM SHEARS OF 70 KTS ARE
IMPRESSIVE. SUPER CELLS WITH HOOKS WERE MOVING TOWARD SUTTON COUNTY AT 3
PM...AND MAY SEE TORNADO WARNINGS ISSUED SHORTLY.

04

.LONG TERM...
MODELS ARE SIMILAR...INDICATING THE UPPER TROUGH TO CLOSE OFF AS
IT MOVES INTO WEST CENTRAL TEXAS TUESDAY NIGHT AND WEDNESDAY.
BEST CHANCES OF RAIN WILL BE NORTH OF THE UPPER LOW...ACROSS THE
BIG COUNTRY. UNFORTUNATELY FOR RAIN CHANCES...MOST OF THE MODELS
ARE DRIER. THE NAM MODEL IS THE WETTEST AND ITS ALGORITHM ONLY
OUTPUTS SOME SCATTERED SHOWERS OVER THE BIG COUNTRY WEDNESDAY AND
WEDNESDAY NIGHT. AT THE SURFACE WINDS ARE DRY AND WESTERLY. IF WE
DO HAVE RAIN FROM MID LEVEL SHOWERS WEDNESDAY...COULD HAVE WITH
STRONG GUSTY WINDS BELOW. WENT COOLER WEDNESDAY...CLOSER TO MET
MOS TEMPERATURES.... ESPECIALLY FOR THE BIG COUNTRY...AS EXPECT
MID AND UPPER LEVEL CLOUDINESS.

FOR THURSDAY INTO THE WEEKEND...DRY WITH UPPER RIDGE BUILDING IN

&&

.PRELIMINARY POINT TEMPS/POPS...
ABILENE 	 43  64  40  59  45 /  30  20  20  30  10
SAN ANGELO 	 45  59  40  63  43 /  20  10  20  20  10
JUNCTION 	 50  66  39  69  42 /  80  30  20  20  10

&&

.SJT WATCHES/WARNINGS/ADVISORIES...
LAKE WIND ADVISORY UNTIL 6 PM CDT THIS EVENING FOR THE FOLLOWING
ZONES: BROWN...COLEMAN...CONCHO...MCCULLOCH.

&&

99/04

Hazardous weather outlook, Mar 19, 4:19 AM CDT, 13 hours 33 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE SAN ANGELO TX
419 AM CDT MON MAR 19 2012

TXZ049-054-064>066-071>073-076>078-098-099-113-114-127-128-139-
140-154-155-168>170-200930-
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-
419 AM CDT MON MAR 19 2012

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

.DAY ONE...TODAY AND TONIGHT

THERE IS A MODERATE RISK OF SEVERE WEATHER MAINLY ALONG AND EAST
OF JUNCTION...TO BRADY...TO BROWNWOOD LINE. THERE IS ALSO A SLIGHT
RISK OF SEVERE THUNDERSTORMS TODAY AND TONIGHT MAINLY ALONG AND
EAST OF A SONORA...TO SAN ANGELO...TO ROCHESTER LINE. THE MAIN
HAZARDS WILL BE LARGE HAIL...DAMAGING WINDS AND ISOLATED TORNADOES.
LOCALLY HEAVY RAINFALL WILL ALSO BE POSSIBLE.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY

SCATTERED SHOWERS AND THUNDERSTORMS WILL BE POSSIBLE TUESDAY AND
WEDNESDAY AS AN UPPER LEVEL LOW MOVES ACROSS THE AREA. THE MAIN
HAZARD WILL BE DANGEROUS CLOUD TO GROUND LIGHTNING.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NEEDED TODAY AND TONIGHT.

In the hours before

Local storm report, Mar 19, 5:01 PM CDT, 51 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SAN ANGELO TX
501 PM CDT MON MAR 19 2012

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

0125 AM     NON-TSTM WND GST 1 ESE WALL              31.37N 100.29W
03/19/2012  M60 MPH          TOM GREEN          TX   MESONET

            WINDS RESULTED FROM THE INTERACTION OF THE LOW LEVEL
            JET AND A DECAYING SHOWER.

&&

EVENT NUMBER SJT1200064

JOHNSON

Local storm report, Mar 19, 5:10 PM CDT, 42 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SAN ANGELO TX
510 PM CDT MON MAR 19 2012

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

0402 PM     HAIL             16 W ROOSEVELT          30.48N 100.32W
03/19/2012  E1.75 INCH       SUTTON             TX   BROADCAST MEDIA

            REPORTED BY TRAVELER VIA LOCAL RADIO STATION. TIME WAS
            ESTIMATED PER RADAR.

&&

EVENT NUMBER SJT1200065

JOHNSON

Special weather statement, Mar 19, 5:17 PM CDT, 35 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SAN ANGELO TX
517 PM CDT MON MAR 19 2012

TXZ078-169-192245-
KIMBLE TX-SUTTON TX-
517 PM CDT MON MAR 19 2012

...SIGNIFICANT WEATHER ADVISORY EFFECTIVE UNTIL 545 PM CDT FOR KIMBLE
AND SUTTON COUNTIES...

AT 516 PM CDT...A STRONG THUNDERSTORM WAS INDICATED BY NATIONAL
WEATHER SERVICE DOPPLER RADAR 13 MILES SOUTHWEST OF ROOSEVELT...OR
ABOUT 26 MILES SOUTHWEST OF JUNCTION...MOVING NORTHEAST AT 35 MPH.

* THE STRONG THUNDERSTORM WILL BE NEAR...
  I-10 NEAR THE SUTTON-KIMBLE COUNTY LINE BY 530 PM CDT
  ROOSEVELT BY 535 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.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1000 PM CDT MONDAY EVENING
FOR WEST CENTRAL TEXAS.

LAT...LON 3036 10031 3056 9999 3038 9981 3028 10004
      3028 10025
TIME...MOT...LOC 2217Z 235DEG 31KT 3033 10016

NR

Local storm report, Mar 19, 5:18 PM CDT, 34 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SAN ANGELO TX
518 PM CDT MON MAR 19 2012

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

0516 PM     HAIL             7 SSE LONDON            30.58N  99.53W
03/19/2012  M1.00 INCH       KIMBLE             TX   STORM CHASER

&&

EVENT NUMBER SJT1200066

JOHNSON

Local storm report, Mar 19, 5:28 PM CDT, 24 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SAN ANGELO TX
528 PM CDT MON MAR 19 2012

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

0312 PM     HAIL             24 SW SONORA            30.30N 100.88W
03/19/2012  E1.00 INCH       SUTTON             TX   BROADCAST MEDIA

            QUARTER SIZE HAIL WAS REPORTED 4 MILES EAST OF THE
            INTERSECTION OF THE CAVERNS OF SONORA ROAD AND RR 189.

&&

EVENT NUMBER SJT1200067

JOHNSON

Local storm report, Mar 19, 5:29 PM CDT, 23 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SAN ANGELO TX
529 PM CDT MON MAR 19 2012

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

0527 PM     HAIL             8 S STREETER            30.64N  99.39W
03/19/2012  M1.75 INCH       MASON              TX   STORM CHASER

&&

EVENT NUMBER SJT1200068

JOHNSON

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 19, 1:18 AM CDT	Special Weather Statement	SJT	Concho, Menard	42 min
Mar 19, 5:28 AM CDT	Special Weather Statement	SJT	Sterling	47 min
Mar 19, 5:56 AM CDT	Special Weather Statement	SJT	Fisher	64 min
Mar 19, 6:29 AM CDT	Special Weather Statement	SJT	Fisher	46 min
Mar 19, 7:06 AM CDT	Lake Wind Advisory	SJT	Brown, Callahan, Coke, Coleman, Concho, Fisher and 9 more	11 hr
Mar 19, 9:29 AM CDT	Special Weather Statement	SJT	Taylor	61 min
Mar 19, 10:28 AM CDT	Special Weather Statement	SJT	Shackelford, Throckmorton	62 min
Mar 19, 11:14 AM CDT	Special Weather Statement	SJT	Callahan, Shackelford, Throckmorton	61 min
Mar 19, 11:32 AM CDT	Special Weather Statement	SJT	Coleman, Runnels	58 min
Mar 19, 11:35 AM CDT	Special Weather Statement	SJT	Concho	55 min
Mar 19, 12:29 PM CDT	Special Weather Statement	SJT	Coleman, Concho, McCulloch	61 min
Mar 19, 12:31 PM CDT	Special Weather Statement	SJT	Callahan	59 min
Mar 19, 1:21 PM CDT	Special Weather Statement	SJT	Coleman, Concho	24 min
Mar 19, 2:19 PM CDT	Special Weather Statement	SJT	Schleicher	26 min
Mar 19, 2:44 PM CDT	Special Weather Statement	SJT	Runnels	46 min
Mar 19, 3:10 PM CDT	Tornado Warning	SJT	Sutton	35 min
Mar 19, 3:15 PM CDT	Special Weather Statement	SJT	Coleman	30 min
Mar 19, 3:41 PM CDT	Severe Thunderstorm Warning	SJT	Sutton	49 min
Mar 19, 3:55 PM CDT	Tornado Warning	SJT	Kimble, Sutton	35 min
Mar 19, 4:29 PM CDT	Tornado Warning	SJT	Kimble	31 min
Mar 19, 4:37 PM CDT	Severe Thunderstorm Warning	SJT	McCulloch, Menard	38 min
Mar 19, 4:50 PM CDT	Tornado Warning	SJT	Kimble	25 min
Mar 19, 4:59 PM CDT	Special Weather Statement	SJT	Menard	31 min
Mar 19, 5:09 PM CDT	Tornado Warning	SJT	Kimble, Mason	36 min
Mar 19, 5:13 PM CDT	Severe Thunderstorm Warning	SJT	Concho, McCulloch, Mason, Menard	47 min
Mar 19, 5:17 PM CDT	Special Weather Statement	SJT	Kimble	28 min
Mar 19, 5:32 PM CDT	Severe Thunderstorm Warning	SJT	Kimble, Menard, Sutton	43 min
Mar 19, 5:38 PM CDT	Tornado Warning	SJT	Mason	37 min
Mar 19, 5:51 PM CDT	Severe Thunderstorm Warning	SJT	Kimble	24 min
Mar 19, 6:12 PM CDT	Special Weather Statement	SJT	Mason	63 min
Mar 19, 6:33 PM CDT	Severe Thunderstorm Warning	SJT	San Saba	27 min
Mar 19, 6:54 PM CDT	Areal Flood Advisory	SJT	Mason	81 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.