Alert archive / Texas / Tornado Warnings in 2013
Tornado Warning 1, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this tornado warning at Feb 10, 2013, 3:40 AM CST for Williamson County, Texas. It was in force for 35 min. 3 reports 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
- Feb 10, 2013, 3:40 AM CST (09:40 UTC)
- Expired
- Feb 10, 2013, 4:15 AM CST
- In force
- 35 min
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Storm-based polygon
County Williamson County, TX
The radar
The Ft Hood radar (KGRK), 27 km from the middle of the area, began a volume at 09:42 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 |
|---|---|---|---|
| Feb 10, 3:45 AM CST | HAIL 0.88 | Jarrell, TX | DIME TO NICKEL SIZE HAIL |
| Feb 10, 3:54 AM CST | HAIL 0.5 | 1 N Jarrell, TX | HAIL IN TORRENTIAL RAIN STORM. RELAYED BY MEDIA. |
| Feb 10, 3:54 AM CST | HAIL 1 | 1 N Jarrell, TX |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
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, 9.7 hours before the alert went out and 233 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.
996 WFUS54 KEWX 100940 TOREWX TXC491-101015- /O.NEW.KEWX.TO.W.0001.130210T0940Z-130210T1015Z/ BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 340 AM CST SUN FEB 10 2013 THE NATIONAL WEATHER SERVICE IN AUSTIN SAN ANTONIO HAS ISSUED A * TORNADO WARNING FOR... NORTHERN WILLIAMSON COUNTY... * UNTIL 415 AM CST. * AT 335 AM CST...NWS METEOROLOGISTS HAVE DETECTED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO NEAR SUN CITY...OR ABOUT 6 MILES WEST OF SERENADA...MOVING NORTHEAST AT 50 MPH. * SOME LOCATIONS IN THE WARNING INCLUDE SUN CITY...SERANADA... WEIR...WALBURG AND JARRELL. PRECAUTIONARY/PREPAREDNESS ACTIONS... IF YOU ARE IN A MOBILE HOME OR VEHICLE...GET OUT AND GO TO A STURDY SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS. A TORNADO WATCH REMAINS IN EFFECT UNTIL 900 AM CST SUNDAY MORNING FOR SOUTH CENTRAL TEXAS. && LAT...LON 3086 9764 3074 9736 3060 9779 3073 9786 TIME...MOT...LOC 0940Z 243DEG 44KT 3070 9773 $$
3 follow-up statements
108 WWUS54 KEWX 100953 SVSEWX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 353 AM CST SUN FEB 10 2013 TXC491-101015- /O.CON.KEWX.TO.W.0001.000000T0000Z-130210T1015Z/ WILLIAMSON TX- 353 AM CST SUN FEB 10 2013 ...A TORNADO WARNING REMAINS IN EFFECT UNTIL 415 AM CST FOR NORTHERN WILLIAMSON COUNTY... AT 348 AM CST...NWS METEOROLOGISTS CONTINUED TO DETECT A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO LOCATED NEAR SERENADA...MOVING NORTHEAST AT 50 MPH. SOME LOCATIONS IN THE WARNING AREA INCLUDE SERENADA... THEON...WALBURG AND JARRELL. PRECAUTIONARY/PREPAREDNESS ACTIONS... THE SAFEST PLACE TO BE DURING A TORNADO IS ON THE LOWEST FLOOR OF A BUILDING IN AN INTERIOR HALLWAY...BATHROOM...OR CLOSET. COVER YOURSELF WITH BLANKETS...PILLOWS OR EVEN A MATTRESS FOR BETTER PROTECTION. A TORNADO WATCH REMAINS IN EFFECT UNTIL 900 AM CST SUNDAY MORNING FOR SOUTH CENTRAL TEXAS. && LAT...LON 3064 9767 3076 9778 3086 9764 3074 9736 TIME...MOT...LOC 0951Z 243DEG 44KT 3074 9762 $$
747 WWUS54 KEWX 101003 SVSEWX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 403 AM CST SUN FEB 10 2013 TXC491-101015- /O.CON.KEWX.TO.W.0001.000000T0000Z-130210T1015Z/ WILLIAMSON TX- 403 AM CST SUN FEB 10 2013 ...A TORNADO WARNING REMAINS IN EFFECT UNTIL 415 AM CST FOR NORTH CENTRAL WILLIAMSON COUNTY... AT 356 AM CST...NWS METEOROLOGISTS CONTINUED TO DETECT A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO LOCATED 8 MILES NORTHEAST OF WALBURG...OR 6 MILES NORTH OF GRANGER...MOVING NORTHEAST AT 50 MPH. PRECAUTIONARY/PREPAREDNESS ACTIONS... THE SAFEST PLACE TO BE DURING A TORNADO IS ON THE LOWEST FLOOR OF A BUILDING IN AN INTERIOR HALLWAY...BATHROOM...OR CLOSET. COVER YOURSELF WITH BLANKETS...PILLOWS OR EVEN A MATTRESS FOR BETTER PROTECTION. A TORNADO WATCH REMAINS IN EFFECT UNTIL 900 AM CST SUNDAY MORNING FOR SOUTH CENTRAL TEXAS. && LAT...LON 3068 9754 3077 9768 3084 9759 3074 9736 TIME...MOT...LOC 1002Z 248DEG 46KT 3080 9745 $$
824 WWUS54 KEWX 101011 SVSEWX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 411 AM CST SUN FEB 10 2013 TXC491-101020- /O.EXP.KEWX.TO.W.0001.000000T0000Z-130210T1015Z/ WILLIAMSON TX- 411 AM CST SUN FEB 10 2013 ...THE TORNADO WARNING FOR NORTH CENTRAL WILLIAMSON COUNTY WILL EXPIRE AT 415 AM CST... THE STORM THAT PROMPTED THE TORNADO WARNING HAS MOVED OUT OF THE WARNED AREA. A TORNADO WATCH REMAINS IN EFFECT UNTIL 900 AM CST SUNDAY MORNING FOR SOUTH CENTRAL TEXAS. LAT...LON 3068 9754 3077 9768 3084 9759 3074 9736 TIME...MOT...LOC 1010Z 248DEG 46KT 3084 9734 $$
The 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, 2:09 AM CST | Severe Thunderstorm Warning | EWX | Burnet, Williamson | 51 min |
| Feb 10, 3:32 AM CST | Severe Thunderstorm Warning | EWX | Williamson | 43 min |
Nearby
Tornado Warnings in Texas, 2013Every tornado warning in 2013Tornadoes 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.