Alert archive / Texas / Severe Thunderstorm Warnings in 2013
Severe Thunderstorm Warning 4, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this severe thunderstorm warning at Feb 10, 2013, 2:09 AM CST for Burnet County, Williamson County, Texas. It was in force for 51 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
- Feb 10, 2013, 2:09 AM CST (08:09 UTC)
- Expired
- Feb 10, 2013, 3:00 AM CST
- In force
- 51 min
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Storm-based polygon
Counties Burnet County, TX, Williamson County, TX
The radar
The Ft Hood radar (KGRK), 60 km from the middle of the area, began a volume at 08:12 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.
Did it verify
Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.
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 |
|---|---|---|---|
| Feb 10, 1:33 AM CST | Tornado Watch | SPC | 6 hr |
The nearest sounding before it
Fort Worth, TX (KFWD), launched 00:00Z, 8.2 hours before the alert went out and 226 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.
- Mixed-layer CAPE
- 1 J/kg
- Mixed-layer CIN
- 0 J/kg
- Mixed-layer LCL
- 459 m above ground
- 0-6 km bulk shear
- 61 kt
- 0-1 km storm-relative helicity
- 728 m²/s²
- 0-3 km storm-relative helicity
- 777 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.2
The text
As transmitted, in the capitals the NWS used until 2016.
994
WUUS54 KEWX 100809
SVREWX
TXC053-491-100900-
/O.NEW.KEWX.SV.W.0004.130210T0809Z-130210T0900Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
209 AM CST SUN FEB 10 2013
THE NATIONAL WEATHER SERVICE IN AUSTIN SAN ANTONIO HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
NORTHEASTERN BURNET COUNTY...
NORTHWESTERN WILLIAMSON COUNTY...
* UNTIL 300 AM CST.
* AT 209 AM CST...NWS METEOROLOGISTS HAVE DETECTED A SEVERE
THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND DAMAGING
WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED NEAR SHADY
GROVE...OR 6 MILES NORTH OF BERTRAM...AND MOVING EAST AT 50 MPH.
* SOME LOCATIONS IN THE WARNING INCLUDE JOPPA...WATSON...MAHOMET...
BRIGGS...ANDICE AND FLORENCE.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...PREPARE
IMMEDIATELY FOR DAMAGING WINDS...DESTRUCTIVE HAIL...AND DEADLY CLOUD
TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...
PREFERABLY INSIDE A STRONG BUILDING BUT AWAY FROM WINDOWS.
A TORNADO WATCH REMAINS IN EFFECT UNTIL 900 AM CST SUNDAY MORNING FOR
SOUTH CENTRAL TEXAS.
&&
LAT...LON 3103 9804 3103 9792 3091 9783 3083 9772
3072 9781 3069 9820 3084 9830
TIME...MOT...LOC 0810Z 249DEG 43KT 3083 9808
$$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 Austin/San Antonio, TX wrote its last area forecast discussion before this severe thunderstorm warning went out at Feb 10, 1:42 AM CST, 27 minutes earlier.
Area forecast discussion, Feb 10, 1:42 AM CST, 27 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 142 AM CST SUN FEB 10 2013 .UPDATE... FOR TORNADO WATCH 29 UNTIL 9 AM. && .DISCUSSION... SPC HAS ISSUED A TORNADO WATCH ROUGHLY NORTH OF A LINE FROM BARKSDALE TO SEGUIN INCLUDING THE AUSTIN METRO AREA...BUT NOT SAN ANTONIO. A SQUALL LINE AHEAD OF A COLD FRONT IS PRODUCING THUNDERSTORMS SOME OF WHICH HAVE BECOME SEVERE. THIS ACTIVITY IS LIKELY TO CONTINUE THIS MORNING AS THE FRONT PROGRESSES TO THE EAST. THERE IS A CHANCE SOME STORMS COULD PRODUCE TORNADOES. && .PREV DISCUSSION... /ISSUED 1131 PM CST SAT FEB 9 2013/ DISCUSSION... SEE AVIATION FOR THE 06Z TAF DISCUSSION. AVIATION... AT 05Z CIGS CONTINUE TO BOUNCE BETWEEN IFR AND MVFR AT ALL THE TAF SITES. PRE-FRONTAL SHOWERS STRETCH FROM DEL RIO TO LLANO WITH A NARROW LINE OF SHOWERS AND THUNDERSTORMS BUILDING SW FROM KABI TO KSJT TO KOZA. HAVE DELAYED THE FROPA A FEW HOURS BASED ON THE 04Z RAP13 MODEL OUTPUT. THUS FROPA WILL OCCUR AT KDRT AROUND 08Z...THE I-35 TERMINALS BETWEEN 14Z AND 16Z. A BROKEN LINE OF CONVECTION WILL ACCOMPANY THE FROPA WITH THE BEST CHANCE OF THUNDERSTORMS AT KAUS. WINDS WILL SHIFT TO THE NW AT 10 TO 15 KTS FOLLOWING THE FROPA WITH CONDITIONS IMPROVING TO VFR BY 14Z AT KDRT...17Z AT THE I-35 TERMINALS. WINDS WILL DIMINISH TO 4 TO 7 KTS FROM THE N AFTER 00Z. PREV DISCUSSION... /ISSUED 822 PM CST SAT FEB 9 2013/ UPDATE... UPDATED CONVECTIVE OUTLOOK RETREATED SLIGHT RISK OF SEVERE STORM AREA SLIGHTLY NORTHWARD WITH SPC NOW PLACING THE AREA NORTH OF A LINE FROM TELEGRAPH TO CENTER POINT TO WEBBERVILLE AND LEXINGTON. WITH SUCH BROAD-SCALE DOWN-SLOPING STRONG SOUTHWEST FLOW ALOFT...AGREE WITH THEIR SLIGHT ADJUSTMENT NORTHWARD. DUE TO THIS STRONG SOUTHWEST FLOW...KDRT 00Z SOUNDING SHOWS STABILIZATION IN THE MID LEVELS DURING THE PAST 12 HOURS. BEST LOW LEVEL CONVERGENCE AND GULF ADVECTION CONTINUES TO BE OVERNIGHT ACROSS THE NORTHEAST CORRIDOR SO THE STRONGER AND MARGINALLY SEVERE STORMS STILL LOOK TO DEVELOP ACROSS THIS AREA. AMENDED FORECAST WORDING TO TAKE OUT MENTION OF SEVERE PER SPC CONVECTIVE OUTLOOK CHANGES. OTHERWISE...NO OTHER CHANGES WERE MADE OTHER THAN COSMETIC. PREV DISCUSSION... /ISSUED 532 PM CST SAT FEB 9 2013/ DISCUSSION... SEE AVIATION FOR THE 00Z TAF DISCUSSION. AVIATION... IFR/MVFR CONDITIONS PREVAILED AT THE TERMINALS AT 23Z WITH THE COLD FRONT LOCATED OVER FAR WEST TEXAS. ISOLATED TO SCATTERED STREAMER SHOWERS WERE OCCURRING ALONG AND EAST OF THE I-35 CORRIDOR IN A BELT OF INCREASING LOW LEVEL WAA WHILE OTHER SHOWERS WERE FORMING WEST OF VAL VERDE COUNTY. TEMPORARY CLEARING WAS ALSO OCCURRING ACROSS OUR SW COUNTIES IN AN AREA OF STRONG MIXING. ALL HI-RES SOLUTIONS ARE IN GOOD AGREEMENT WITH THE TIMING OF THE FRONTAL PASSAGE. ATTM THE PACIFIC COLD FRONT WILL MOVE ACROSS THE I-35 CORRIDOR AROUND 12Z ACCOMPANIED BY A BROKEN LINE OF SHOWERS AND THUNDERSTORMS. WINDS WILL SHIFT TO THE NW AT 10 TO 15 KTS FOLLOWING THE FROPA WITH CONDITIONS IMPROVING TO VFR BY 17Z AT THE I-35 CORRIDOR SITES...12Z AT KDRT. PREV DISCUSSION... /ISSUED 332 PM CST SAT FEB 9 2013/ DISCUSSION... OVERCAST SKIES...AREAS OF FOG...AND PATCHY LIGHT RAIN WILL CONTINUE INTO THIS EVENING. AN UPPER LEVEL LOW WILL MOVE ACROSS THE CENTRAL PLAINS TONIGHT AND DRAG A COLD FRONT INTO SOUTH CENTRAL TEXAS EARLY SUNDAY. 12Z MODELS HAVE TRENDED A BIT SLOWER WITH THE PASSAGE OF THE FRONT ACROSS OUR CWA...SO HAVE DELAYED THE ONSET OF HIGHEST POPS UNTIL AFTER MIDNIGHT. MODERATE INSTABILITY THROUGH THE BOUNDARY LAYER...VERTICAL WIND SHEAR OF ABOUT 50 TO 60 KTS...AND UPPER SUPPORT FROM THE FRONTAL BOUNDARY COULD BE ENOUGH FOR ISOLATED MARGINALLY SEVERE STORMS TO DEVELOP OVERNIGHT. SPC HAS OUR NRN/NERN COUNTIES IN SLIGHT RISK...OR GENERALLY ALONG AND NORTH OF A LINE FROM ROCKSPRINGS TO SAN ANTONIO TO LA GRANGE. LARGE HAIL AND DAMAGING WINDS ARE THE PRIMARY SEVERE THREATS. SHOWERS AND THUNDERSTORMS WILL END FROM WEST TO EAST SUNDAY MORNING WITH THE PASSAGE OF THE FRONT. A SECOND UPPER TROUGH WILL DIG INTO THE FOUR-CORNERS REGION ON MONDAY AND ACROSS SRN OK/NRN TX ON TUESDAY. THIS UPPER LOW WILL ENABLE SLIGHT CHANCES FOR SHOWERS TO RETURN EARLY MONDAY AND PERSIST THROUGH MID-DAY TUESDAY. AS THIS SECOND TROUGH EJECTS TO OUR NORTHEAST...A DRIER AIRMASS WILL FILTER INTO THE REGION. LOWS ARE EXPECTED TO FALL INTO THE MID/UPPER 30S WEDNESDAY MORNING WITH FREEZING TEMPERATURES POSSIBLE ACROSS THE HILL COUNTRY. WEDNESDAY WILL BE THE COOLEST DAY OF THE WEEK WITH HIGHS MOSTLY STAYING IN THE LOW 60S. A WARMING TREND WILL ENSUE FOR THE LATTER HALF OF THE WORKWEEK AHEAD OF YET ANOTHER UPPER LEVEL TROUGH. FIRE WEATHER... DRIER AIR WILL MOVE INTO SOUTH CENTRAL TEXAS BEHIND A COLD FRONT ENTERING THE REGION LATE TONIGHT/EARLY SUNDAY. THIS DRY AIR WILL CAUSE RELATIVE HUMIDITIES TO FALL INTO THE 20S ACROSS AREAS GENERALLY ALONG AND NORTHEAST OF I-35. RELATIVE HUMIDITIES ACROSS THE HILL COUNTRY AND SOUTHERN EDWARDS PLATEAU WILL FALL INTO THE TEENS. THUS...ELEVATED FIRE WEATHER CONDITIONS ARE EXPECTED. A SLIGHT INCREASE IN LOW LEVEL MOISTURE AND SLIGHT CHANCES FOR SHOWERS WILL KEEP RH VALUES AT OR ABOVE 30 PERCENT ON MONDAY. ELEVATED FIRE WEATHER CONDITIONS ARE EXPECTED ON TUESDAY AS AN UPPER LEVEL SYSTEM BRINGS STRONG DRY NORTHWEST WINDS TO THE REGION. RELATIVE HUMIDITIES ARE EXPECTED TO REMAIN NEAR 30 PERCENT ACROSS MUCH OF THE REGION...AND NEAR OR BELOW 20 PERCENT ACROSS THE SOUTHERN EDWARDS PLATEAU...EACH AFTERNOON WEDNESDAY THROUGH FRIDAY. && .PRELIMINARY POINT TEMPS/POPS... AUSTIN CAMP MABRY 77 51 68 50 69 / 70 10 20 50 30 AUSTIN BERGSTROM INTL AIRPORT 76 46 67 45 69 / 70 10 20 50 30 NEW BRAUNFELS MUNI AIRPORT 77 49 67 50 71 / 70 10 20 50 30 BURNET MUNI AIRPORT 74 44 64 48 66 / 70 - 20 50 30 DEL RIO INTL AIRPORT 75 49 74 52 69 / 30 - - 30 - GEORGETOWN MUNI AIRPORT 74 45 65 48 66 / 70 10 20 50 40 HONDO MUNI AIRPORT 77 49 69 51 72 / 50 10 20 50 10 SAN MARCOS MUNI AIRPORT 76 49 67 50 69 / 70 10 20 50 30 LA GRANGE - FAYETTE REGIONAL 76 51 67 52 67 / 60 20 30 50 50 SAN ANTONIO INTL AIRPORT 76 50 66 51 70 / 60 10 20 50 20 STINSON MUNI AIRPORT 77 50 67 52 71 / 60 10 20 50 20 && .EWX WATCHES/WARNINGS/ADVISORIES... NONE. && MESOSCALE/AVIATION...24 SYNOPTIC/GRIDS...05
Hazardous weather outlook, Feb 9, 7:38 PM CST, 6 hours 31 minutes before
HAZARDOUS WEATHER OUTLOOK...UPDATED NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 738 PM CST SAT FEB 9 2013 TXZ171>173-183>194-202>209-217>225-228-101345- 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- 738 PM CST SAT FEB 9 2013 THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTH CENTRAL TEXAS. .DAY ONE...TONIGHT... THERE IS A SLIGHT CHANCE OF STRONG TO SEVERE THUNDERSTORMS LATE TONIGHT THROUGH SUNDAY MORNING GENERALLY NORTH OF A LINE FROM HARPER TO NEW BRAUNFELS TO LEXINGTON. THE MAIN CONCERNS WITH THESE THUNDERSTORMS WILL BE LARGE HAIL AND DAMAGING WINDS. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY... ELEVATED TO NEAR CRITICAL FIRE WEATHER CONDITIONS ARE POSSIBLE SUNDAY AFTERNOON GENERALLY NORTH AND WEST OF A LINE FROM BURNET TO KERRVILLE TO CARRIZO SPRINGS. MINIMUM AFTERNOON RELATIVE HUMIDITIES WILL RANGE BETWEEN 15 AND 20 PERCENT WITH NORTHWEST WINDS OF 10 TO 15 MPH. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED.
In the hours before
Special weather statement, Feb 10, 12:53 AM CST, 1 hour 16 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
1253 AM CST SUN FEB 10 2013
TXZ186-188-100730-
GILLESPIE-KERR-
1253 AM CST SUN FEB 10 2013
...SIGNIFICANT WEATHER ADVISORY FOR CENTRAL KERR AND SOUTHWESTERN
GILLESPIE COUNTIES UNTIL 130 AM CST...
AT 1250 AM CST...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
STRONG THUNDERSTORM NEAR KERR WILDLIFE MANAGEMENT AREA...OR 24 MILES
WEST OF KERRVILLE...MOVING NORTHEAST AT 35 MPH.
HAIL UP TO ONE-HALF INCH IN DIAMETER AND WIND GUSTS UP TO 50 MPH ARE
EXPECTED WITH THIS STORM...ALONG WITH FREQUENT DANGEROUS LIGHTNING.
LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE...
HUNT...
MOUNTAIN HOME...
WALTONIA...
INGRAM...
IF THREATENING WEATHER APPROACHES YOUR AREA...TAKE SHELTER IN A
STURDY BUILDING.
LAT...LON 3005 9913 2994 9963 3011 9969 3027 9942
3030 9925
TIME...MOT...LOC 0652Z 244DEG 35KT 3010 9951Local storm report, Feb 10, 1:30 AM CST, 39 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
130 AM CST SUN FEB 10 2013
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0127 AM HAIL 14 W FREDERICKSBURG 30.27N 99.11W
02/10/2013 E1.50 INCH GILLESPIE TX TRAINED SPOTTER
&&
EVENT NUMBER EWX1300057
BFThe office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 10, 12:53 AM CST | Special Weather Statement | EWX | Kerr | 37 min |
| Feb 10, 1:23 AM CST | Severe Thunderstorm Warning | EWX | Gillespie | 52 min |
| Feb 10, 1:30 AM CST | Severe Thunderstorm Warning | EWX | Burnet, Llano | 45 min |
| Feb 10, 2:06 AM CST | Severe Thunderstorm Warning | EWX | Blanco, Burnet, Gillespie, Llano | 54 min |
| Feb 10, 3:32 AM CST | Severe Thunderstorm Warning | EWX | Williamson | 43 min |
| Feb 10, 3:40 AM CST | Tornado Warning | EWX | Williamson | 35 min |
Nearby
Severe Thunderstorm Warnings in Texas, 2013Every severe thunderstorm warning in 2013
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.