Alert archive / Texas / Special Weather Statements in 2012

Special Weather Statement, NWS San Angelo, TX

March 19, 2012Kimble County, Mason County, Texas

NWS San Angelo, TX issued this special weather statement at Mar 19, 2012, 7:59 PM CDT for Kimble County, Mason County, Texas. It was in force for 46 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: Mar 19, 2012, 7:59 PM CDT (00:59 UTC)
Expired: Mar 19, 2012, 8:45 PM CDT
In force: 46 min
Issued by: NWS San Angelo, TX

Counties Kimble County, TX, Mason County, TX

The radar

The San Angelo radar (KSJT), 134 km from the middle of the area, began a volume at 01:02 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, 1.0 hours before the alert went out and 182 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: 1142 J/kg
Mixed-layer CIN: -180 J/kg
Mixed-layer LCL: 2280 m above ground
0-6 km bulk shear: 72 kt
0-1 km storm-relative helicity: 74 m²/s²
0-3 km storm-relative helicity: 170 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.3

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 Mar 19, 7:26 PM CDT, 33 minutes earlier.

Area forecast discussion, Mar 19, 7:26 PM CDT, 33 minutes before

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

.UPDATE...
JUST A QUICK UPDATE TO REMOVE THE COUNTIES OF COLEMAN...CONCHO...
SUTTON AND SCHLEICHER FROM TORNADO WATCH 85. STORMS HAVE MOVED TO
THE EAST OF THIS AREA AND THE SEVERE THREAT APPEARS TO BE OVER.
THE TORNADIC THREAT IS DWINDLING ACROSS THE REMAINING COUNTIES OF
WW85 AS THE STORMS ARE BECOMING ELEVATED TO THE NORTH OF THE
SURFACE BOUNDARY. WILL ISSUE A FULL UPDATE LATER THIS EVENING.

JOHNSON

&&

.PREV DISCUSSION... /ISSUED 602 PM CDT MON MAR 19 2012/

DISCUSSION...
SEE 00Z AVIATION DISCUSSION BELOW.

AVIATION...
SEVERE THUNDERSTORMS TRACKING NORTHEAST ACROSS THE NORTHWEST HILL
COUNTRY AND SOUTHERN HEARTLAND. HAVE TSRA AT THE KBBD AND KJCT
TERMINALS THROUGH MUCH OF THIS EVENING. OTHERWISE...MAINLY VFR
CONDITIONS THROUGH THE REST OF THE TAF PACKAGE...WITH NORTH
TO NORTHWEST WINDS OF 10 TO 20 KNOTS.

PREV DISCUSSION... /ISSUED 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...
NONE.
&&

25

Hazardous weather outlook, Mar 19, 4:19 AM CDT, 15 hours 40 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

Special weather statement, Mar 19, 6:12 PM CDT, 1 hour 47 minutes before

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

TXZ168>170-200015-
KIMBLE TX-MASON TX-MENARD TX-
612 PM CDT MON MAR 19 2012

...SIGNIFICANT WEATHER ADVISORY EFFECTIVE UNTIL 715 PM CDT FOR
KIMBLE...MASON AND MENARD COUNTIES...

AT 607 PM CDT...A LINE OF STRONG THUNDERSTORMS WAS INDICATED BY
NATIONAL WEATHER SERVICE DOPPLER RADAR ALONG A LINE EXTENDING FROM 5
MILES NORTHWEST OF LONDON TO 6 MILES SOUTHEAST OF LONDON TO 7 MILES
SOUTHEAST OF SEGOVIA...OR ALONG A LINE EXTENDING FROM 17 MILES
SOUTHEAST OF MENARD TO 16 MILES NORTHEAST OF JUNCTION TO 14 MILES
SOUTHEAST OF JUNCTION...MOVING NORTHEAST AT 40 MPH.

* STRONG THUNDERSTORMS WILL BE NEAR...
  ERNA BY 620 PM CDT
  STREETER BY 630 PM CDT
  THE INTERSECTION OF HIGHWAY 29 AND RANCH ROAD 1222 BY 635 PM CDT
  MASON AND KOOCKVILLE BY 640 PM CDT
  THE INTERSECTION OF US-377 AND RANCH ROAD 1222 BY 645 PM CDT
  KATEMCY BY 650 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 3028 9971 3058 9967 3075 9977 3094 9938
      3094 9922 3089 9915 3071 9895 3058 9896
      3049 9918 3050 9930 3044 9930
TIME...MOT...LOC 2312Z 242DEG 34KT 3073 9960 3062 9948
          3038 9954

NR

Local storm report, Mar 19, 6:22 PM CDT, 1 hour 37 minutes before

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

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

0613 PM     HAIL             2 N PONTOTOC            30.94N  98.98W
03/19/2012  E1.75 INCH       SAN SABA           TX   LAW ENFORCEMENT

&&

EVENT NUMBER SJT1200071

MC

Local storm report, Mar 19, 6:44 PM CDT, 1 hour 15 minutes before

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

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

0642 PM     FLOOD            MASON                   30.75N  99.23W
03/19/2012                   MASON              TX   TRAINED SPOTTER

            STREET FLOODING REPORTED IN MASON.

&&

EVENT NUMBER SJT1200072

19

Local storm report, Mar 19, 7:08 PM CDT, 51 minutes before

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

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

0658 PM     HAIL             5 NE CHAPPEL            31.10N  98.51W
03/19/2012  E1.00 INCH       SAN SABA           TX   PUBLIC

            HAIL UP TO THE SIZE OF QUARTERS NEARLY COVERING THE
            GROUND.

&&

EVENT NUMBER SJT1200073

JOHNSON

Special weather statement, Mar 19, 7:18 PM CDT, 41 minutes before

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

TXZ170-200045-
MASON TX-
718 PM CDT MON MAR 19 2012

...SIGNIFICANT WEATHER ADVISORY EFFECTIVE UNTIL 745 PM CDT FOR MASON
COUNTY...

AT 716 PM CDT...A STRONG THUNDERSTORM WAS INDICATED BY NATIONAL
WEATHER SERVICE DOPPLER RADAR 5 MILES SOUTHWEST OF LOYAL VALLEY...OR
ABOUT 18 MILES SOUTHEAST OF MASON...MOVING NORTHEAST AT 50 MPH.

THE STRONG THUNDERSTORM WILL REMAIN OVER MAINLY RURAL AREAS OF...
  EASTERN MASON COUNTY.

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 3050 9931 3094 9919 3094 9909 3092 9909
      3092 9896 3050 9896 3049 9897
TIME...MOT...LOC 0018Z 216DEG 42KT 3055 9905

NR

Special weather statement, Mar 19, 7:59 PM CDT, 0 minutes before

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

TXZ169-170-200145-
KIMBLE TX-MASON TX-
759 PM CDT MON MAR 19 2012

...SIGNIFICANT WEATHER ADVISORY EFFECTIVE UNTIL 845 PM CDT FOR KIMBLE
AND MASON COUNTIES...

AT 757 PM CDT...A STRONG THUNDERSTORM WAS INDICATED BY NATIONAL
WEATHER SERVICE DOPPLER RADAR 14 MILES SOUTHEAST OF SEGOVIA...OR
ABOUT 21 MILES SOUTHEAST OF JUNCTION...MOVING NORTH AT 40 MPH.

THE STRONG THUNDERSTORM WILL REMAIN OVER MAINLY RURAL AREAS OF...
  EASTERN KIMBLE AND SOUTHWESTERN MASON COUNTIES.

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 3071 9983 3071 9914 3049 9920 3049 9930
      3028 9930 3028 9989
TIME...MOT...LOC 0059Z 201DEG 33KT 3030 9950

NR

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 19, 7:18 PM CDT	Special Weather Statement	SJT	Mason	27 min
Mar 19, 8:35 PM CDT	Special Weather Statement	SJT	Mason	40 min
Mar 19, 9:45 PM CDT	Severe Thunderstorm Warning	SJT	Brown, McCulloch, San Saba	15 min
Mar 19, 10:36 PM CDT	Special Weather Statement	SJT	Mason	39 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.