Alert archive / Texas / Tornado Watches in 2016
Tornado Watch 37
The Storm Prediction Center issued this tornado watch at Mar 8, 2016, 7:24 AM CST for 35 counties in Texas. It was in force for 8 hr.
The area
The outline as issued.
The facts
- Issued
- Mar 8, 2016, 7:24 AM CST (13:24 UTC)
- Expired
- Mar 8, 2016, 3:00 PM CST
- In force
- 8 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 2 in
- Strongest gust expected
- 60 kt
All 35 counties
Anderson County, TX, Bastrop County, TX, Bell County, TX, Blanco County, TX, Brazos County, TX, Burleson County, TX, Burnet County, TX, Caldwell County, TX, Coryell County, TX, Ellis County, TX, Falls County, TX, Fayette County, TX, Freestone County, TX, Grimes County, TX, Hays County, TX, Henderson County, TX, Hill County, TX, Houston County, TX, Johnson County, TX, Kaufman County, TX, Lampasas County, TX, Lee County, TX, Leon County, TX, Limestone County, TX, Llano County, TX, Madison County, TX, McLennan County, TX, Milam County, TX, Navarro County, TX, Rains County, TX, Robertson County, TX, Travis County, TX, Van Zandt County, TX, Washington County, TX, Williamson County, TX
The radar
The Dallas/Ft Worth radar (KFWS), 99 km from the middle of the area, began a volume at 13:24 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 SPC expected
The probabilities SPC published with the watch, for the watch area over its life.
- Two or more tornadoes
- 40%
- One or more EF2 to EF5 tornadoes
- 20%
- Ten or more severe wind reports
- 50%
- One or more gusts of 65 knots or more
- 10%
- Ten or more severe hail reports
- 30%
- One or more hailstones of 2 inches or more
- 30%
- Six or more combined severe hail and wind reports
- 80%
Warnings issued inside it
13 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 8, 7:37 AM CST | Severe Thunderstorm Warning | EWX | Burnet, Llano | 38 min |
| Mar 8, 7:43 AM CST | Severe Thunderstorm Warning | FWD | Lampasas | 62 min |
| Mar 8, 7:46 AM CST | Tornado Warning | FWD | Hood, Johnson, Parker, Tarrant | 29 min |
| Mar 8, 7:50 AM CST | Severe Thunderstorm Warning | FWD | Johnson | 40 min |
| Mar 8, 7:56 AM CST | Tornado Warning | FWD | Lampasas | 49 min |
| Mar 8, 8:26 AM CST | Tornado Warning | FWD | Coryell, Lampasas | 34 min |
| Mar 8, 8:59 AM CST | Severe Thunderstorm Warning | FWD | Coryell | 38 min |
| Mar 8, 9:16 AM CST | Tornado Warning | EWX | Williamson | 29 min |
| Mar 8, 9:22 AM CST | Severe Thunderstorm Warning | FWD | Bell, Coryell | 53 min |
| Mar 8, 12:19 PM CST | Severe Thunderstorm Warning | FWD | Henderson, Navarro | 56 min |
| Mar 8, 12:34 PM CST | Tornado Warning | FWD | Henderson | 26 min |
| Mar 8, 12:43 PM CST | Severe Thunderstorm Warning | FWD | Van Zandt | 47 min |
| Mar 8, 12:52 PM CST | Tornado Warning | FWD | Van Zandt | 38 min |
Discussions around it
SPC mesoscale discussions over the same counties from four hours before the watch to its end.
The nearest sounding before it
Fort Worth, TX (KFWD), launched 12:00Z, 1.4 hours before the alert went out and 127 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
- 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
The text
As transmitted.
741 WWUS20 KWNS 081321 SEL7 SPC WW 081321 TXZ000-081900- URGENT - IMMEDIATE BROADCAST REQUESTED TORNADO WATCH NUMBER 37 NWS STORM PREDICTION CENTER NORMAN OK 725 AM CST TUE MAR 8 2016 THE NWS STORM PREDICTION CENTER HAS ISSUED A * TORNADO WATCH FOR PORTIONS OF CENTRAL TEXAS * EFFECTIVE THIS TUESDAY MORNING AND AFTERNOON FROM 725 AM UNTIL 100 PM CST. * PRIMARY THREATS INCLUDE... A COUPLE TORNADOES POSSIBLE SCATTERED DAMAGING WIND GUSTS TO 70 MPH POSSIBLE ISOLATED VERY LARGE HAIL EVENTS TO 2 INCHES IN DIAMETER POSSIBLE SUMMARY...A BROKEN BAND OF THUNDERSTORMS...INCLUDING A FEW SUPERCELLS CAPABLE OF SEVERE HAIL...DAMAGING WIND...AND TORNADOES...WILL MOVE GENERALLY EAST-NORTHEAST ACROSS WATCH AREA THROUGH EARLY AFTERNOON. OTHER STORMS MAY FORM AHEAD OF THE LINE ACROSS EAST CENTRAL TEXAS. THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 100 STATUTE MILES EAST AND WEST OF A LINE FROM 25 MILES EAST OF DALLAS TEXAS TO 25 MILES SOUTH OF AUSTIN TEXAS. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU7). PRECAUTIONARY/PREPAREDNESS ACTIONS... REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR TORNADOES AND SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA. PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR THREATENING WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS AND POSSIBLE WARNINGS. && OTHER WATCH INFORMATION...CONTINUE...WW 36... AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM MOTION VECTOR 23030. ...CORFIDI
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 7, 6:42 PM CST | Mesoscale Discussion | SPC | Bosque, Comanche, Cooke, Dallas, Denton, Ellis and 10 more | 63 min |
| Mar 7, 11:41 PM CST | Mesoscale Discussion | SPC | Borden, Coke, Concho, Crane, Crockett, Dawson and 27 more | 2 hr |
| Mar 8, 1:18 AM CST | Severe Thunderstorm Watch | SPC | Bosque, Brown, Callahan, Coke, Coleman, Collin and 48 more | 10 hr |
| Mar 8, 3:36 AM CST | Mesoscale Discussion | SPC | Archer, Baylor, Childress, Clay, Cottle, Dickens and 6 more | 84 min |
| Mar 8, 3:57 AM CST | Mesoscale Discussion | SPC | Archer, Baylor, Brown, Callahan, Clay, Coleman and 36 more | 2 hr |
| Mar 8, 7:06 AM CST | Mesoscale Discussion | SPC | Anderson, Austin, Bastrop, Bell, Blanco, Bosque and 64 more | 2 hr |
| Mar 8, 9:00 AM CST | Mesoscale Discussion | SPC | Anderson, Bastrop, Bell, Bosque, Burleson, Burnet and 35 more | 90 min |
| Mar 8, 10:46 AM CST | Mesoscale Discussion | SPC | Angelina, Cherokee, Hardin, Houston, Jasper, Liberty and 12 more | 89 min |
| Mar 8, 12:41 PM CST | Tornado Watch | SPC | Angelina, Austin, Bowie, Camp, Cass, Chambers and 34 more | 5 hr |
| Mar 8, 1:10 PM CST | Mesoscale Discussion | SPC | Bell, Blanco, Bosque, Brown, Burnet, Coke and 32 more | 95 min |
| Mar 8, 3:11 PM CST | Mesoscale Discussion | SPC | Anderson, Angelina, Bowie, Cass, Chambers, Cherokee and 24 more | 94 min |
| Mar 8, 5:52 PM CST | Mesoscale Discussion | SPC | Angelina, Hardin, Jasper, Newton, Sabine, San Augustine and 2 more | 83 min |
Nearby
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.