Alert archive / Texas / Tornado Watches in 2016
Tornado Watch 38
The Storm Prediction Center issued this tornado watch at Mar 8, 2016, 12:41 PM CST for 9 counties in Arkansas; 21 parishes in Louisiana; 40 counties in Texas. It was in force for 5 hr.
The area
The outline as issued.
The facts
- Issued
- Mar 8, 2016, 12:41 PM CST (18:41 UTC)
- Expired
- Mar 8, 2016, 6:00 PM CST
- In force
- 5 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 1.5 in
- Strongest gust expected
- 60 kt
All 70 counties
Columbia County, AR, Hempstead County, AR, Howard County, AR, Lafayette County, AR, Little River County, AR, Miller County, AR, Nevada County, AR, Sevier County, AR, Union County, AR, Beauregard Parish, LA, Bienville Parish, LA, Bossier Parish, LA, Caddo Parish, LA, Calcasieu Parish, LA, Caldwell Parish, LA, Cameron Parish, LA, Claiborne Parish, LA, De Soto Parish, LA, Grant Parish, LA, Jackson Parish, LA, LaSalle Parish, LA, Lincoln Parish, LA, Natchitoches Parish, LA, Ouachita Parish, LA, Red River Parish, LA, Sabine Parish, LA, Union Parish, LA, Vernon Parish, LA, Webster Parish, LA, Winn Parish, LA, Angelina County, TX, Austin County, TX, Bowie County, TX, Camp County, TX, Cass County, TX, Chambers County, TX, Cherokee County, TX, Franklin County, TX, Gregg County, TX, Grimes County, TX, Hardin County, TX, Harris County, TX, Harrison County, TX, Houston County, TX, Jasper County, TX, Jefferson County, TX, Liberty County, TX, Madison County, TX, Marion County, TX, Montgomery County, TX, Morris County, TX, Nacogdoches County, TX, Newton County, TX, Orange County, TX, Panola County, TX, Polk County, TX, Red River County, TX, Rusk County, TX, Sabine County, TX, San Augustine County, TX, San Jacinto County, TX, Shelby County, TX, Smith County, TX, Titus County, TX, Trinity County, TX, Tyler County, TX, Upshur County, TX, Walker County, TX, Waller County, TX, Wood County, TX
The radar
The Shreveport radar (KSHV), 75 km from the middle of the area, began a volume at 18:41 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
- 10%
- Ten or more severe wind reports
- 30%
- One or more gusts of 65 knots or more
- 10%
- Ten or more severe hail reports
- 20%
- One or more hailstones of 2 inches or more
- 10%
- Six or more combined severe hail and wind reports
- 70%
Warnings issued inside it
12 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 8, 1:11 PM CST | Severe Thunderstorm Warning | SHV | Camp, Franklin, Smith, Upshur, Wood | 49 min |
| Mar 8, 1:21 PM CST | Tornado Warning | LCH | Vernon | 9 min |
| Mar 8, 1:44 PM CST | Tornado Warning | SHV | Camp, Franklin, Upshur, Wood | 31 min |
| Mar 8, 1:58 PM CST | Severe Thunderstorm Warning | SHV | Camp, Cass, Franklin, Harrison, Marion, Morris and 3 more | 45 min |
| Mar 8, 2:41 PM CST | Severe Thunderstorm Warning | SHV | Grant, Natchitoches, Winn | 64 min |
| Mar 8, 2:52 PM CST | Severe Thunderstorm Warning | SHV | De Soto, Sabine | 38 min |
| Mar 8, 3:25 PM CST | Flash Flood Warning | SHV | Little River | 3 hr |
| Mar 8, 3:31 PM CST | Severe Thunderstorm Warning | SHV | Bossier, Caddo, De Soto, Red River, Webster | 21 min |
| Mar 8, 3:40 PM CST | Severe Thunderstorm Warning | SHV | Caldwell, Grant, Jackson, LaSalle, Natchitoches, Winn | 50 min |
| Mar 8, 4:26 PM CST | Severe Thunderstorm Warning | SHV | Caldwell, Jackson, Ouachita, Union, Winn | 49 min |
| Mar 8, 4:55 PM CST | Flash Flood Warning | SHV | Columbia, Lafayette, Miller | 15 hr |
| Mar 8, 5:13 PM CST | Severe Thunderstorm Warning | SHV | Caldwell, Ouachita, Union | 35 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
Shreveport, LA (KBAD), launched 12:00Z, 6.7 hours before the alert went out and 84 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
- 7 J/kg
- Mixed-layer CIN
- -109 J/kg
- Mixed-layer LCL
- 710 m above ground
- 0-6 km bulk shear
- 36 kt
- 0-1 km storm-relative helicity
- 280 m²/s²
- 0-3 km storm-relative helicity
- 415 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
812 WWUS20 KWNS 081838 SEL8 SPC WW 081838 ARZ000-LAZ000-OKZ000-TXZ000-CWZ000-090000- URGENT - IMMEDIATE BROADCAST REQUESTED TORNADO WATCH NUMBER 38 NWS STORM PREDICTION CENTER NORMAN OK 1240 PM CST TUE MAR 8 2016 THE NWS STORM PREDICTION CENTER HAS ISSUED A * TORNADO WATCH FOR PORTIONS OF SOUTHWEST ARKANSAS WESTERN LOUISIANA FAR SOUTHEAST OKLAHOMA PARTS OF EAST TEXAS COASTAL WATERS * EFFECTIVE THIS TUESDAY AFTERNOON AND EVENING FROM 1240 PM UNTIL 600 PM CST. * PRIMARY THREATS INCLUDE... A COUPLE TORNADOES POSSIBLE ISOLATED DAMAGING WIND GUSTS TO 70 MPH POSSIBLE ISOLATED LARGE HAIL EVENTS TO 1.5 INCHES IN DIAMETER POSSIBLE SUMMARY...SHOWERS AND THUNDERSTORMS CONTINUE TO SPREAD EASTWARD/NORTHEASTWARD ACROSS EAST TEXAS AND ADJACENT AREAS...AND WILL PERSIST/STRENGTHEN GRADUALLY THROUGH THE AFTERNOON. THE STRONGEST STORMS WILL CONTINUE TO POSE A RISK FOR LOCALLY DAMAGING WINDS AND ISOLATED TORNADOES...ALONG WITH SOME POTENTIAL FOR MARGINALLY SEVERE HAIL. THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 75 STATUTE MILES EAST AND WEST OF A LINE FROM 25 MILES NORTH OF TEXARKANA ARKANSAS TO 50 MILES WEST OF PORT ARTHUR TEXAS. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU8). 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 37... AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT TO 1.5 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM MOTION VECTOR 23040. ...GOSS
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 8, 3:11 PM CST | Mesoscale Discussion | SPC | Bradley, Calhoun, Clark, Cleveland, Columbia, Dallas and 7 more | 94 min |
| Mar 8, 5:52 PM CST | Mesoscale Discussion | SPC | Union | 83 min |
| 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, 7:24 AM CST | Tornado Watch | SPC | Anderson, Bastrop, Bell, Blanco, Brazos, Burleson and 29 more | 8 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, 1:10 PM CST | Mesoscale Discussion | SPC | Bell, Blanco, Bosque, Brown, Burnet, Coke and 32 more | 95 min |
Nearby
Tornado Watches in Texas, 2016Tornado Watches in Louisiana, 2016Tornado Watches in Arkansas, 2016Every tornado watch 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.