Alert archive / Texas / Special Weather Statements in 2015

Special Weather Statement, NWS Austin/San Antonio, TX

May 23, 2015Blanco County, Texas

NWS Austin/San Antonio, TX issued this special weather statement at May 23, 2015, 2:20 PM CDT for Blanco County, Texas. It was in force for 55 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
May 23, 2015, 2:20 PM CDT (19:20 UTC)
Expired
May 23, 2015, 3:15 PM CDT
In force
55 min
Issued by
NWS Austin/San Antonio, TX

County Blanco County, TX

The radar

The Austin/San Antonio radar (KEWX), 68 km from the middle of the area, began a volume at 19:22 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 (KDLF), launched 12:00Z, 7.3 hours before the alert went out and 270 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 12:00Z on 2015-05-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2727 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 12:00Z on 2015-05-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 79 square meters per square second.193958Sfc1 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
2727 J/kg
Mixed-layer CIN
-3 J/kg
Mixed-layer LCL
601 m above ground
0-6 km bulk shear
27 kt
0-1 km storm-relative helicity
79 m²/s²
0-3 km storm-relative helicity
226 m²/s²
Significant tornado parameter
1.4
Supercell composite
8.5

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 Austin/San Antonio, TX wrote its last area forecast discussion before this special weather statement went out at May 23, 12:40 PM CDT, 1 hour 40 minutes earlier.

Area forecast discussion, May 23, 12:40 PM CDT, 1 hour 40 minutes before
AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
1240 PM CDT SAT MAY 23 2015

.AVIATION.../18Z TAFS/
CONCERN FOR THIS FORECAST PERIOD WILL BE THE CONVECTION THAT
DEVELOPS THIS AFTERNOON...BUT MORE IMPORTANTLY THE SIGNIFICANT
CONVECTION THAT IS EXPECTED OVERNIGHT. SEVERAL OF THE HI RES
MODELS ARE REALLY DEVELOPING THE CONVECTION ALONG THE RIO GRANDE
IN THE 20Z-22Z TIME PERIOD AND MOVING THE SYSTEM EASTWARD TO THE
I-35 CORRIDOR BY 02Z-04Z AND THEN EAST OF THE TERMINALS BY 12Z
SUNDAY. HAVE USED THE SLIGHTLY FASTER TRENDS FOR THIS FORECAST
PERIOD. FOR THIS AFTERNOON 18Z-23Z SHOULD SEE MVFR/IFR CONDITIONS
WITH SCATTERED CONVECTION. WILL SEE THE MORE WIDESPREAD CONVECTION
DEVELOPING BY 20Z-22Z ACROSS THE RIO GRANDE AND THEN ADVANCING
EASTWARD THROUGH 09Z. LINGERING SHRA SHOULD MOVE OUT BY 12Z-13Z.
CIGS WILL FALL TO IFR WITH CONVECTION OVERNIGHT AND THEN IMPROVE
TO VFR BY 17Z. S/SE WINDS 10-15 KNOTS THROUGH 01Z THEN E/SE 5-10
KNOTS OVERNIGHT AND THROUGH 15Z. AFTER 15Z SUNDAY SOUTHERLY WINDS
AT 10-15 KNOTS WITH SOME GUSTS TO 20 KNOTS POSSIBLE.

&&

.PREV DISCUSSION... /ISSUED 953 AM CDT SAT MAY 23 2015/

UPDATE...
BIGGEST CHANGE TO THE FORECAST WAS TO UP RAIN CHANCES ACROSS THE
RIO GRANDE PLAINS BY 10 PERCENT THIS AFTERNOON. ALSO ADJUSTED
HIGHS FOR TODAY ACROSS THE HILL COUNTRY UP A DEGREE GIVEN CURRENT
OBSERVATIONS. OTHERWISE ONLY MINOR CHANGES MADE AND TRENDED ALL
HOURLY GRIDS BASED ON MORNING SURFACE OBSERVATIONS.

DISCUSSION...
ALL OF THE MORNING MESOSCALE/HIGH-RES MODELS CONTINUE TO TREND
EARLIER FOR THE LINE OF SHOWERS AND THUNDERSTORMS THIS EVENING.
MOST HAVE IT DEVELOPING OVER THE DEL RIO AREA AROUND 5 PM AND
GETTING INTO THE I-35 CORRIDOR BETWEEN 9 AND MIDNIGHT. HEAVY RAINS
AND SEVERE WEATHER ARE STILL LOOKING LIKELY WITH THIS SYSTEM...AND
WILL LOOK IN DEPTH INTO THAT IN THE AFTERNOON PACKAGE AND
DISCUSSION. FOR THE REST OF TODAY SCATTERED SHOWERS AND
THUNDERSTORMS SHOULD INCREASE IN COVERAGE THIS AFTERNOON AHEAD OF
THE LINE.

WILL CONTINUE TO STRESS THAT ANYONE ON LOCAL RIVERS AND LAKES THIS
HOLIDAY WEEKEND...TODAY THROUGH MONDAY...NEED TO PAY VERY CLOSE
ATTENTION TO THE WEATHER AND ANY WARNINGS THAT ARE ISSUED. HAVE
MULTIPLE WAYS TO RECEIVE WEATHER INFORMATION...HAVE A PLAN TO
SEEK SHELTER OR GET TO SAFETY SHOULD SEVERE WEATHER OR FLOODING
OCCUR...AND ALWAYS REMEMBER TURN AROUND...DONT DROWN.

PREV DISCUSSION... /ISSUED 653 AM CDT SAT MAY 23 2015/

AVIATION... /12Z TAF UPDATE/
ACTIVE CONVECTION IS IMPACTING AUS AT THE TIME OF TAF ISSUANCE.
THE SCATTERED SHOWERS AND THUNDERSTORMS LOOK TO BE PULLING NORTH
OF THE SAT/SSF VCNTYS FOR A FEW HOURS AND COULD LIFT NORTH OF THE
AUS AREA IN THE NEXT HOUR OR TWO AS WELL. DEEP TROPICAL MOISTURE
AND ANOTHER RIPPLE OF ENERGY NEAR DRT COULD BEGIN TO IMPACT THE
I-35 SITES AGAIN BY 15Z. CONVECTION SHOULD BE SCATTERED SO TIMING
IS IN LOW CONFIDENCE FOR TODAY. CONFIDENCE INCREASES FOR THE
PREVAILING THUNDER PERIOD...ALTHOUGH THE TIME WINDOW MAY BE ABLE
TO COMPRESS ONCE THE MUCH ANTICIPATED STORM COMPLEX BEGINS TO TAKE
SHAPE. AFTER THE COMPLEX IS SPECULATED TO PASS EAST OF I-35 TOWARD
DAYBREAK...WILL CONTINUE PREVAILING SHOWERS...WITH SOME POSSIBLE
FURTHER IMPROVEMENTS TO FOLLOW DURING THE DAYLIGHT HOURS SUNDAY.
WILL KEEP CONDITIONS FAIRLY PESSIMISTIC IN CASE THE SYSTEM SLOWS
DOWN.

PREV DISCUSSION... /ISSUED 314 AM CDT SAT MAY 23 2015/

SHORT TERM (TODAY THROUGH SUNDAY)...
MODERATE TO HEAVY RAINFALL IS GETTING AN EARLY START WITH
CONVECTION INCREASING WEST OF HIGHWAY 83. THIS IS ALL ASSOCIATED
WITH INCREASING LIFT AHEAD OF THE MAIN UPPER LOW WHICH IS STILL
OVER UTAH/ARIZONA PER 00Z UPPER AIR ANALYSIS AND LATEST WATER
VAPOR IMAGERY. RAINFALL RATES WITH THIS ACTIVITY ARE GENERALLY AT
1-2 INCHES PER HOUR AND WE HAVE ALREADY ISSUED ONE FLOOD ADVISORY.
THE HRRR IS ZEROING IN ON THIS AREA WHERE RAIN IS CURRENTLY
INCREASING AND IS COMING UP WITH SOME HIGH TOTALS THIS MORNING.
BECAUSE OF THIS EARLY THREAT OF HEAVY RAINFALL...WILL GO AHEAD
AND START THE FLASH FLOOD WATCH NOW. THIS WILL BE A BIT TOO EARLY
FOR THE EASTERN ZONES...BUT WANT TO AVOID CONFUSION WITH A
SEGMENTED PRODUCT. HIGH-RES MODEL GUIDANCE CONTINUES TO SHOW THE
WESTERN CWA AS THE FAVORED AREA FOR CONVECTION LATER THIS MORNING
BEFORE SPREADING ACROSS THE AREA THIS AFTERNOON. RAIN LOOKS LIKELY
FOR TODAY WITH 60/70 POPS ACROSS THE CWA. INDIVIDUAL CELLS COULD
CONTAIN HEAVY RAINFALL AND SOME TRAINING OF CELLS IS ALSO
POSSIBLE.

THE MAIN FORCING WITH THIS INITIAL WAVE OF LIFT ASSOCIATED WITH
THE UPPER LOW WILL BEGIN TO ARRIVE TO THE WESTERN ZONES LATE THIS
AFTERNOON AND EVENING. CONFIDENCE IS HIGH THAT A LINE OF SHOWERS
AND THUNDERSTORMS WILL DEVELOP WITH THIS LIFT AND STRETCH ACROSS A
LARGE PORTION OF TEXAS. THERE ARE SOME DISCREPANCIES WITH THE
GUIDANCE ON THE EXACT TIMING OF THIS WITH MOST MODELS SOMEWHERE
BETWEEN THE 21Z TO 03Z TIME FRAME...WITH SOME OF THE HIGH-RES
GUIDANCE BEING THE EARLIEST. THIS LINE IS EXPECTED TO SLOWLY MARCH
THROUGH THE CWA OVERNIGHT AND IS EXPECTED TO AVERAGE A QUICK 1-3
INCHES OF RAIN AS IT MOVES ACROSS. OVERNIGHT RAIN ON TOP OF ANY
RAINFALL THAT OCCURS TODAY WILL NOT BE ABLE TO SOAK INTO THE
GROUND...AS SOILS REMAIN QUITE SATURATED FROM A VERY WET SPRING.
MOST OF THE RAIN WILL RUNOFF INTO CREEKS...STREAMS AND RIVERS AND
FLOODING IS ONCE AGAIN LIKELY.

ALTHOUGH FLOODING RAINS IS OF THE HIGHEST CONCERN ON THIS HOLIDAY
WEEKEND...THERE IS THE THREAT OF SEVERE WEATHER AS WELL. SEVERE
PARAMETERS ARE FAVORABLE FOR SEVERE STORMS...BUT AM CONCERNED WITH
THE HIGHER COVERAGE OF STORMS AND THE EFFECT THAT COULD HAVE BY
CLUTTERING UP THE NEAR-STORM ENVIRONMENT. HOWEVER...CANT RULE OUT
BOWING SEGMENTS WITHIN THE MAIN LINE THAT COULD PRODUCE SOME
SEVERE WINDS. ALSO...LOW-LEVEL WINDS WILL INCREASE AND SOME
TURNING IN THE PROFILE WILL POSE AN ISOLATED TORNADO THREAT WITH
ANY STRONGER LINE SEGMENTS AS WELL AS THE MAIN LINE MOVES THROUGH
THE AREA.

BY SUNDAY MORNING...THE LINE OF STORMS WILL BE NEARING THE EASTERN
COUNTIES AND SHOULD MOVE OUT OF THE CWA SOMETIME AROUND 18Z. THE
THREAT OF FLOODING RAINS AND SOME SEVERE WEATHER WILL CONTINUE
SUNDAY MORNING. BY SUNDAY AFTERNOON...CAPE VALUES INCREASE TO
ABOVE 3000 J/KG WHICH IS SOMEWHAT INITIALLY CONCERNING.
HOWEVER...FORECAST SOUNDINGS SHOW DECENT AMOUNTS OF DRYING ALOFT
BEHIND THE INITIAL WAVE WHICH SHOULD LIMIT ACTIVITY. ALSO...THE
ENVIRONMENT SHOULD BE PRETTY WORKED OVER FROM THE OVERNIGHT AND
MORNING ACTIVITY. THE ONE AREA TO WATCH WILL BE THE WESTERN
COUNTIES WHERE THE MOST RECOVERY TIME WILL BE AND SOME HIGH-RES
MEMBERS ARE SHOWING THE POTENTIAL FOR REDEVELOPMENT SUNDAY
AFTERNOON IN THIS GENERAL AREA.

RAINFALL AMOUNTS THIS MORNING THROUGH SUNDAY WILL AVERAGE 1-4
INCHES WITH THE HIGHER AMOUNTS NEAR THE I-35 CORRIDOR. WE MUST
CONTINUE TO STRESS TO ANYONE ON LOCAL RIVERS AND LAKES THIS
HOLIDAY WEEKEND TO PAY VERY CLOSE ATTENTION TO THE WEATHER AND ANY
WARNINGS THAT ARE ISSUED. HAVE A PLAN IN PLACE TO SEEK SHELTER
AND ALWAYS REMEMBER TO TURN AROUND...DONT DROWN.

LONG TERM (SUNDAY NIGHT THROUGH FRIDAY)...
SHOULD SEE A LULL IN ACTIVITY EARLY SUNDAY NIGHT...BUT THIS
SHOULD UNFORTUNATELY BE BRIEF. CURRENTLY ON WATER VAPOR
IMAGERY...ANOTHER IMPULSE ASSOCIATED WITH THE MAIN UPPER LOW CAN
BE SEEN NEAR THE WASHINGTON AND OREGON BORDER. 00Z GUIDANCE SEEMS
TO HAVE PICKED UP ON THIS FEATURE QUITE WELL AND BRINGS IT INTO
TEXAS FOR MONDAY /MEMORIAL DAY/. SUBSEQUENTLY...THE 00Z MODEL
GUIDANCE HAS INCREASED THE QPF AMOUNTS FORECASTED FOR MONDAY
AFTERNOON. THE GFS IS THE HIGHEST OF ALL GUIDANCE WITH ANOTHER 2
INCHES OF RAIN FOR THE I-35 CORRIDOR. WENT AHEAD AND INCREASED
RAIN TOTALS IN THE OFFICIAL FORECAST...BUT NOT QUITE AS HIGH AS
THE GFS IS ADVERTISING. IF CONFIDENCE INCREASES THAT UP TO ANOTHER
2 INCHES OF RAIN WILL FALL ON MONDAY....THE FLASH FLOOD WATCH WILL
NEED TO BE EXTENDED AT A LATER TIME. CAPE/SHEAR VALUES WILL
SUPPORT THE THREAT OF SEVERE WEATHER AS WELL. FORECAST SOUNDINGS
DUE SHOW THE THREAT FOR HAIL...DAMAGING WINDS AND POSSIBLE
ISOLATED TORNADOES FOR MONDAY AFTERNOON. THE OVERALL THREAT FOR
TORNADOES WILL BE HIGHLY DEPENDENT ON THE OVERALL COVERAGE OF
ACTIVITY AND IF ANY DISCRETE SUPERCELLS ARE AVAILABLE TO DEVELOP.
AGAIN...ANYONE OUTDOORS ON THE HOLIDAY NEED TO MAKE SURE TO HAVE A
PLAN AND BE READY TO SEEK SHELTER.

THE UPPER AIR PATTERN BECOMES MORE ZONAL ON TUESDAY WITH WEAK
RIDGING ON WEDNESDAY. OVERALL COVERAGE OF ACTIVITY SHOULD DECREASE
FOR MID-WEEK. POPS WILL SLIGHTLY INCREASE ONCE AGAIN TOWARDS THE
END OF THE WORK WEEK AS THE NEXT DISTURBANCE NEARS THE AREA.

&&

.PRELIMINARY POINT TEMPS/POPS...
AUSTIN CAMP MABRY              81  68  81  71  82 /  60  90  60  40  60
AUSTIN BERGSTROM INTL AIRPORT  81  68  81  70  82 /  60  90  70  40  60
NEW BRAUNFELS MUNI AIRPORT     82  68  82  71  82 /  60  90  60  40  60
BURNET MUNI AIRPORT            79  66  80  69  81 /  60  90  60  30  50
DEL RIO INTL AIRPORT           82  68  89  70  87 /  80  70  30  20  40
GEORGETOWN MUNI AIRPORT        80  68  80  70  82 /  60  90  60  40  60
HONDO MUNI AIRPORT             82  66  84  70  82 /  70  90  50  30  60
SAN MARCOS MUNI AIRPORT        81  68  80  70  82 /  60  90  60  40  60
LA GRANGE - FAYETTE REGIONAL   83  69  80  71  82 /  40  80  80  50  70
SAN ANTONIO INTL AIRPORT       82  68  82  72  83 /  60  90  60  30  60
STINSON MUNI AIRPORT           83  69  83  72  83 /  60  90  60  30  60

&&

.EWX WATCHES/WARNINGS/ADVISORIES...
FLASH FLOOD WATCH THROUGH SUNDAY EVENING FOR THE FOLLOWING
COUNTIES: ATASCOSA...BANDERA...BASTROP...BEXAR...BLANCO...BURNET...
CALDWELL...COMAL...DE WITT...DIMMIT...EDWARDS...FAYETTE...FRIO...
GILLESPIE...GONZALES...GUADALUPE...HAYS...KARNES...KENDALL...KERR...
KINNEY...LAVACA...LEE...LLANO...MAVERICK...MEDINA...REAL...TRAVIS...
UVALDE...VAL VERDE...WILLIAMSON...WILSON...ZAVALA.

&&

MESOSCALE/AVIATION...10
SYNOPTIC/GRIDS...TREADWAY
PUBLIC SERVICE/DATA COLLECTION...33
Hazardous weather outlook, May 23, 4:53 AM CDT, 9 hours 27 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
453 AM CDT SAT MAY 23 2015

TXZ171>173-183>194-202>209-217>225-228-241000-
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-
453 AM CDT SAT MAY 23 2015

THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTH CENTRAL TEXAS.

.DAY ONE...TODAY AND TONIGHT.

A FLASH FLOOD WATCH IS IN EFFECT FOR ALL OF SOUTH CENTRAL TEXAS
TODAY AND TONIGHT. SCATTERED THUNDERSTORMS HAVE ALREADY DEVELOPED
OVER WESTERN PARTS OF SOUTH CENTRAL TEXAS EARLY TODAY. THE THREAT
FOR HEAVY RAINFALL WILL BECOME WIDESPREAD LATER TODAY AS A LARGE
THUNDERSTORM COMPLEX DEVELOPS OVER TEXAS. WITH NEARLY SATURATED
SOIL CONDITIONS ACROSS MUCH OF THE AREA...THERE WILL BE A HIGH
THREAT FOR FLASH FLOODING. WHILE THE HEAVIEST RAINS ARE EXPECTED
TO EXTEND FROM TONIGHT INTO SUNDAY...LOCALLY HEAVY DOWNPOURS OF 1
TO 4 INCHES ARE POSSIBLE TODAY AND TONIGHT. A FEW AREA STREAMS AND
RIVERS MAY EXPERIENCE NEW RISES...ESPECIALLY OVER THE SOUTHERN
EDWARDS PLATEAU AND HILL COUNTRY THROUGH TONIGHT.

IN ADDITION TO THE FLASH FLOOD AND POSSIBLE IMPACTS ON RIVERS...
CONDITIONS ALONG THE LEAD EDGE OF THE STORM COMPLEX WILL BE ALSO
FAVORABLE FOR A FEW SEVERE STORMS...WITH DAMAGING WINDS AND
ISOLATED BRIEF TORNADOES POSSIBLE.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY.

A FLASH FLOOD WATCH WILL CONTINUE FOR ALL OF SOUTH CENTRAL TEXAS
THROUGH 7 PM CDT SUNDAY EVENING.

WIDESPREAD HEAVY RAINS ARE EXPECTED TO CONTINUE INTO THE DAYTIME
HOURS SUNDAY WITH DECREASING POTENTIAL FOR HEAVY RAINFALL SUNDAY
EVENING. THE CONTINUED HEAVY RAIN THREAT INTO SUNDAY...MEANS ALL
OF THE RIVERS AND STREAMS OF SOUTH CENTRAL TEXAS HAVE A POTENTIAL
TO SEE SIGNIFICANT RISES. SOME RIVERS REMAIN SWOLLEN FROM RECENT
RAINFALL. THE THREAT FOR SEVERE WINDS AND BRIEF TORNADOES WILL
ALSO CONTINUE SUNDAY...MAINLY ALONG THE LEADING EDGE OF THE
THUNDERSTORM COMPLEX.

NEW EPISODES OF HEAVY RAIN COULD OCCUR AGAIN MONDAY INTO EARLY
TUESDAY MORNING...ESPECIALLY EAST OF I-35. THE STORMS MONDAY
AFTERNOON THROUGH LATE MONDAY NIGHT WILL ALSO HAVE THE POTENTIAL
TO PRODUCE LARGE HAIL...DAMAGING WINDS...AND ISOLATED TORNADOES.

WIDESPREAD RAINS FOR THE FIVE DAY PERIOD ENDING TUESDAY WILL
RANGE FROM 1 TO 4 INCHES...WHILE SOME LOCATIONS COULD RECEIVING UP
TO 6 INCHES.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NEEDED THROUGH THE HOLIDAY WEEKEND.

In the hours before

Special weather statement, May 23, 1:42 PM CDT, 38 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
142 PM CDT SAT MAY 23 2015

TXZ209-231930-
FAYETTE TX-
142 PM CDT SAT MAY 23 2015

...SIGNIFICANT WEATHER ADVISORY FOR CENTRAL FAYETTE COUNTY UNTIL 230
PM CDT...

AT 141 PM CDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM NEAR
MULDOON...OR 9 MILES WEST OF LA GRANGE...MOVING NORTH AT 25 MPH.

WIND GUSTS UP TO 50 MPH WILL BE POSSIBLE WITH THIS STORM.

LOCATIONS IMPACTED INCLUDE...
LA GRANGE...MULDOON...WEST POINT...FREYBURG...O QUINN...COLONY...
SWISS ALP...PLUM...FLOY...RABBS PRAIRIE...WINCHESTER AND WICCHESTER.

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.

&&

LAT...LON 2972 9691 2977 9724 3001 9702 2997 9689
TIME...MOT...LOC 1841Z 172DEG 40KT 2988 9704

MSL
Special weather statement, May 23, 2:06 PM CDT, 14 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
206 PM CDT SAT MAY 23 2015

TXZ206-207-231945-
COMAL TX-GUADALUPE TX-
206 PM CDT SAT MAY 23 2015

...SIGNIFICANT WEATHER ADVISORY FOR WEST CENTRAL GUADALUPE AND
SOUTHEASTERN COMAL COUNTIES UNTIL 245 PM CDT...

AT 206 PM CDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM OVER
MARION...OR 8 MILES WEST OF SEGUIN...MOVING NORTH AT 30 MPH.

HALF INCH HAIL AND WINDS IN EXCESS OF 40 MPH WILL BE POSSIBLE WITH
THIS STORM.

LOCATIONS IMPACTED INCLUDE...
NEW BRAUNFELS...SEGUIN...SCHERTZ...CANYON LAKE...MARION...SANTA
CLARA...NEW BERLIN...MCQUEENEY...ZUEHL...SOLMS...GRUENE...ZIPP...
FREIHEIT AND NOLTE.

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.

&&

LAT...LON 2948 9797 2949 9815 2983 9830 2981 9803
TIME...MOT...LOC 1906Z 171DEG 33KT 2958 9811

MSL
Local storm report, May 23, 2:18 PM CDT, 2 minutes before
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Special weather statement, May 23, 2:20 PM CDT, 0 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
220 PM CDT SAT MAY 23 2015

TXZ190-191-232015-
BLANCO TX-HAYS TX-
220 PM CDT SAT MAY 23 2015

...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN HAYS AND CENTRAL
BLANCO COUNTIES UNTIL 315 PM CDT...

AT 219 PM CDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM OVER
PAYTON...OR 7 MILES EAST OF BLANCO...MOVING NORTH AT 25 MPH.

WIND GUSTS OF 50 TO 55 MPH WILL BE POSSIBLE WITH THIS STORM.

LOCATIONS IMPACTED INCLUDE...
BLANCO...ROUND MOUNTAIN...JOHNSON CITY...CYPRESS MILL...PAYTON...
HENLY AND PEDERNALES FALLS STATE PARK.

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.

&&

LAT...LON 3036 9817 3032 9813 3008 9821 3005 9840
      3042 9850 3043 9813
TIME...MOT...LOC 1919Z 182DEG 24KT 3011 9830

MSL

The office that day

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

IssuedProductOfficeCountiesLasted
May 23, 3:09 AM CDTAreal Flood AdvisoryEWXEdwards, Kinney, Real, Uvalde3 hr
May 23, 3:45 AM CDTFlash Flood WarningEWXEdwards, Real, Uvalde4 hr
May 23, 12:37 PM CDTAreal Flood AdvisoryEWXBandera, Kerr, Medina, Real, Uvalde113 min
May 23, 1:01 PM CDTAreal Flood AdvisoryEWXDeWitt, Gonzales, Karnes, Lavaca, Wilson119 min
May 23, 1:28 PM CDTAreal Flood AdvisoryEWXFayette2 hr
May 23, 1:42 PM CDTSpecial Weather StatementEWXFayette48 min
May 23, 2:06 PM CDTSpecial Weather StatementEWXComal39 min
May 23, 2:12 PM CDTRiver Flood WarningEWXUvalde31 hr
May 23, 2:26 PM CDTSpecial Weather StatementEWXBastrop64 min
May 23, 2:30 PM CDTSpecial Weather StatementEWXComal45 min
May 23, 2:33 PM CDTSpecial Weather StatementEWXLavaca57 min
May 23, 2:40 PM CDTSevere Thunderstorm WarningEWXVal Verde65 min
May 23, 2:45 PM CDTSpecial Weather StatementEWXWilliamson60 min
May 23, 2:52 PM CDTSpecial Weather StatementEWXHays53 min
May 23, 3:11 PM CDTFlash Flood WarningEWXBandera, Real, Uvalde2 hr
May 23, 3:22 PM CDTSpecial Weather StatementEWXBlanco38 min
May 23, 3:28 PM CDTSpecial Weather StatementEWXFrio47 min
May 23, 3:37 PM CDTAreal Flood AdvisoryEWXVal Verde113 min
May 23, 3:42 PM CDTAreal Flood AdvisoryEWXBexar2 hr
May 23, 3:48 PM CDTSpecial Weather StatementEWXVal Verde42 min
May 23, 4:08 PM CDTFlash Flood WarningEWXEdwards, Kinney, Val Verde3 hr
May 23, 4:12 PM CDTFlash Flood WarningEWXBandera, Bexar, Blanco, Comal, Kendall, Kerr and 1 more9 hr
May 23, 4:50 PM CDTFlash Flood WarningEWXBandera, Edwards, Kerr, Real6 hr
May 23, 5:03 PM CDTSpecial Weather StatementEWXUvalde27 min
May 23, 5:14 PM CDTFlash Flood WarningEWXBandera, Medina, Real, Uvalde3 hr
May 23, 5:31 PM CDTSpecial Weather StatementEWXUvalde59 min
May 23, 5:46 PM CDTSpecial Weather StatementEWXComal44 min
May 23, 5:51 PM CDTSevere Thunderstorm WarningEWXUvalde39 min
May 23, 5:57 PM CDTTornado WarningEWXComal33 min
May 23, 6:05 PM CDTRiver Flood WarningEWXBandera28 hr
May 23, 6:29 PM CDTFlash Flood WarningEWXBlanco, Gillespie6 hr
May 23, 6:39 PM CDTSpecial Weather StatementEWXZavala51 min
May 23, 6:45 PM CDTSevere Thunderstorm WarningEWXBlanco45 min

Nearby

Special Weather Statements in Texas, 2015Every special weather statement in 2015

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.