Alert archive / Texas / Special Weather Statements in 2016

Special Weather Statement, NWS Austin/San Antonio, TX

March 8, 2016Llano County, Texas

NWS Austin/San Antonio, TX issued this special weather statement at Mar 8, 2016, 6:56 AM CST for Llano County, Texas. It was in force for 34 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 8, 2016, 6:56 AM CST (12:56 UTC)
Expired: Mar 8, 2016, 7:30 AM CST
In force: 34 min
Issued by: NWS Austin/San Antonio, TX

County Llano County, TX

The radar

The Ft Hood radar (KGRK), 105 km from the middle of the area, began a volume at 12:58 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

Fort Worth, TX (KFWD), launched 12:00Z, 0.9 hours before the alert went out and 250 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: 1032 J/kg
Mixed-layer CIN: -11 J/kg
Mixed-layer LCL: 548 m above ground
0-6 km bulk shear: 48 kt
0-1 km storm-relative helicity: 291 m²/s²
0-3 km storm-relative helicity: 219 m²/s²
Significant tornado parameter: 1.5
Supercell composite: 6.5

Open this sounding in Storm Lab

The text

As transmitted.

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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 Austin/San Antonio, TX wrote its last area forecast discussion before this special weather statement went out at Mar 8, 5:48 AM CST, 1 hour 8 minutes earlier.

Area forecast discussion, Mar 8, 5:48 AM CST, 1 hour 8 minutes before

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Hazardous weather outlook, Mar 8, 5:42 AM CST, 1 hour 14 minutes before

HAZARDOUS WEATHER OUTLOOK...UPDATED
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
542 AM CST TUE MAR 8 2016

TXZ171>173-183>194-202>209-217>225-228-091145-
LLANO-BURNET-WILLIAMSON-VAL VERDE-EDWARDS-REAL-KERR-BANDERA-
GILLESPIE-KENDALL-BLANCO-HAYS-TRAVIS-BASTROP-LEE-KINNEY-UVALDE-
MEDINA-BEXAR-COMAL-GUADALUPE-CALDWELL-FAYETTE-MAVERICK-ZAVALA-
FRIO-ATASCOSA-WILSON-KARNES-GONZALES-DE WITT-LAVACA-DIMMIT-
542 AM CST TUE MAR 8 2016

THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTH CENTRAL TEXAS.

.DAY ONE...TODAY AND TONIGHT.

A LINE OF STRONG STORMS MAY CLIP PORTIONS OF LLANO AND NORTHERN
BURNET COUNTY THIS MORNING. SOME OF THE STORMS COULD PRODUCE SMALL
HAIL AND GUSTY WINDS UP TO 50 MPH.

STRONG TO SEVERE STORMS WILL DEVELOP ACROSS THE BIG BEND AND
MEXICO BY LATE THIS AFTERNOON...THEN MOVE ACROSS SOUTH CENTRAL
TEXAS THIS EVENING THROUGH EARLY WEDNESDAY MORNING. THE PRIMARY
SEVERE THREATS ARE DAMAGING WINDS AND LARGE HAIL...BUT ONE OR TWO
TORNADOES ARE POSSIBLE AS WELL AS LOCALLY HEAVY RAIN. TOTAL
RAINFALL AMOUNTS SHOULD AVERAGE 1 TO 3 INCHES...WITH AN ISOLATED
POCKET OR TWO OF UP TO 5 INCHES EAST OF I-35. THIS COULD CAUSE
SOME FLOODING IN URBAN AREAS AS WELL AS OTHER AREAS THAT NORMALLY
HAVE FASTER RUNOFF.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY.

ADDITIONAL SCATTERED SHOWERS AND THUNDERSTORMS ARE EXPECTED
THURSDAY AND FRIDAY...BUT THESE SHOULD POSE NO SEVERE OR HEAVY
RAIN THREAT.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS POSSIBLE TONIGHT.

In the hours before

Special weather statement, Mar 8, 1:47 AM CST, 5 hours 9 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
147 AM CST TUE MAR 8 2016

TXZ183-080830-
VAL VERDE TX-
147 AM CST TUE MAR 8 2016

...SIGNIFICANT WEATHER ADVISORY FOR CENTRAL AND NORTHEASTERN VAL
VERDE COUNTY UNTIL 230 AM CST...

AT 146 AM CST...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM
NEAR SHUMLA...OR 13 MILES NORTHWEST OF COMSTOCK...MOVING NORTHEAST
AT 40 TO 45 MPH.

DIME TO NICKEL SIZE HAIL AND WINDS IN EXCESS OF 40 MPH WILL BE
POSSIBLE WITH THIS STORM.

LOCATIONS IMPACTED INCLUDE...
JUNO...SEMINOLE CANYON STATE PARK...SHUMLA AND BAKERS CROSSING.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 AM CST FOR
SOUTH CENTRAL TEXAS.

LAT...LON 3029 10113 3029 10096 3018 10078 2959 10131
      2965 10130 2966 10135 2965 10136 2970 10137
      2971 10140 2973 10139 2975 10142 2977 10140
      2975 10144 2977 10146
TIME...MOT...LOC 0746Z 210DEG 36KT 2984 10130

ALLEN

Special weather statement, Mar 8, 2:22 AM CST, 4 hours 34 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
222 AM CST TUE MAR 8 2016

TXZ183-184-080900-
EDWARDS TX-VAL VERDE TX-
222 AM CST TUE MAR 8 2016

...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN VAL VERDE AND
NORTHWESTERN EDWARDS COUNTIES UNTIL 300 AM CST...

AT 221 AM CST...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM NEAR
LOMA ALTA...MOVING NORTH AT 40 MPH.

DIME TO NICKEL SIZE HAIL AND WINDS IN EXCESS OF 40 MPH WILL BE
POSSIBLE WITH THIS STORM.

LOCATIONS IMPACTED INCLUDE...
LOMA ALTA...FLOUR MILLS...CARTA VALLEY...VINEGARONE AND US-
277 NEAR THE SUTTON-EDWARDS COUNTY LINE.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 AM CST FOR
SOUTH CENTRAL TEXAS.

LAT...LON 3029 10058 2978 10068 2979 10089 3029 10087
TIME...MOT...LOC 0821Z 185DEG 34KT 2986 10078

ALLEN

Special weather statement, Mar 8, 2:32 AM CST, 4 hours 24 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
232 AM CST TUE MAR 8 2016

TXZ183-080900-
VAL VERDE TX-
232 AM CST TUE MAR 8 2016

...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN VAL VERDE COUNTY
UNTIL 300 AM CST...

AT 232 AM CST...DOPPLER RADAR WAS TRACKING A LINE OF STRONG
THUNDERSTORMS ALONG A LINE EXTENDING FROM 12 MILES NORTHEAST OF JUNO
TO 19 MILES WEST OF LOMA ALTA...AND MOVING NORTHEAST AT 40 MPH.

NICKEL SIZE HAIL AND WIND GUSTS UP TO 50 MPH WILL BE POSSIBLE WITH
THESE STORMS.

LOCATIONS IMPACTED INCLUDE...
LOMA ALTA...VINEGARONE AND DEVILS RIVER STATE NATURAL AREA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THESE STORMS...AND MAY
LEAD TO FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED
ROADWAYS.

FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THESE STORMS.
LIGHTNING CAN STRIKE 10 MILES AWAY FROM A THUNDERSTORM. SEEK A SAFE
SHELTER INSIDE A BUILDING OR VEHICLE.

&&

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 AM CST FOR
SOUTH CENTRAL TEXAS.

LAT...LON 3029 10102 3029 10070 2990 10070 2987 10111
TIME...MOT...LOC 0832Z 220DEG 34KT 3031 10102 2996 10109

RUNYEN

Special weather statement, Mar 8, 2:37 AM CST, 4 hours 19 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
237 AM CST TUE MAR 8 2016

TXZ184-080915-
EDWARDS TX-
237 AM CST TUE MAR 8 2016

...SIGNIFICANT WEATHER ADVISORY FOR NORTH CENTRAL EDWARDS COUNTY
UNTIL 315 AM CST...

AT 237 AM CST...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM 8
MILES WEST OF ROCKSPRINGS...MOVING NORTH AT 35 MPH.

NICKEL SIZE HAIL AND WIND GUSTS UP TO 50 MPH WILL BE POSSIBLE WITH
THIS STORM.

THIS STORM WILL REMAIN OVER MAINLY RURAL AREAS OF NORTH CENTRAL
EDWARDS COUNTY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THIS STORM...AND MAY LEAD
TO FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED
ROADWAYS.

FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM.
LIGHTNING CAN STRIKE 10 MILES AWAY FROM A THUNDERSTORM. SEEK A SAFE
SHELTER INSIDE A BUILDING OR VEHICLE.

&&

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 AM CST FOR
SOUTH CENTRAL TEXAS.

LAT...LON 3029 10012 2995 10025 2997 10046 3029 10046
TIME...MOT...LOC 0837Z 185DEG 29KT 3004 10035

RUNYEN

Special weather statement, Mar 8, 6:28 AM CST, 28 minutes before

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Special weather statement, Mar 8, 6:56 AM CST, 0 minutes before

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The office that day

Everything else NWS Austin/San Antonio, TX issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Mar 8, 1:12 AM CST	Special Weather Statement	EWX	Val Verde	48 min
Mar 8, 1:23 AM CST	Special Weather Statement	EWX	Val Verde	52 min
Mar 8, 1:44 AM CST	Severe Thunderstorm Warning	EWX	Val Verde	46 min
Mar 8, 1:47 AM CST	Special Weather Statement	EWX	Val Verde	43 min
Mar 8, 2:22 AM CST	Special Weather Statement	EWX	Edwards	38 min
Mar 8, 2:32 AM CST	Special Weather Statement	EWX	Val Verde	28 min
Mar 8, 2:37 AM CST	Special Weather Statement	EWX	Edwards	38 min
Mar 8, 3:03 AM CST	Areal Flood Advisory	EWX	Val Verde	3 hr
Mar 8, 3:09 AM CST	Severe Thunderstorm Warning	EWX	Edwards, Val Verde	28 min
Mar 8, 6:28 AM CST	Special Weather Statement	EWX	Llano	32 min
Mar 8, 7:37 AM CST	Severe Thunderstorm Warning	EWX	Burnet, Llano	38 min
Mar 8, 8:51 AM CST	Special Weather Statement	EWX	Lee	24 min
Mar 8, 9:02 AM CST	Special Weather Statement	EWX	Williamson	43 min
Mar 8, 9:16 AM CST	Tornado Warning	EWX	Williamson	29 min
Mar 8, 2:43 PM CST	Special Weather Statement	EWX	Val Verde	47 min
Mar 8, 3:00 PM CST	Severe Thunderstorm Warning	EWX	Val Verde	75 min
Mar 8, 4:14 PM CST	Special Weather Statement	EWX	Val Verde	61 min

Nearby

Special Weather Statements in Texas, 2016 Every special weather statement in 2016

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.